Fixed 'Can't locate argument-less serializer for class xyz.quaver.pupil.d.e. For generic classes, such as lists, please provide serializer explicitly.'

Version 5.0

.idea/codeStyles/Project.xml

@@ -1,5 +1,6 @@
 <component name="ProjectCodeStyleConfiguration">
   <code_scheme name="Project" version="173">
+    <option name="RIGHT_MARGIN" value="120" />
     <AndroidXmlCodeStyleSettings>
       <option name="ARRANGEMENT_SETTINGS_MIGRATED_TO_191" value="true" />
     </AndroidXmlCodeStyleSettings>

.idea/kotlinCodeInsightSettings.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="KotlinCodeInsightWorkspaceSettings">
+    <option name="addUnambiguousImportsOnTheFly" value="true" />
+    <option name="optimizeImportsOnTheFly" value="true" />
+  </component>
+</project>

.idea/kotlinc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Kotlin2JvmCompilerArguments">
+    <option name="jvmTarget" value="1.8" />
+  </component>
+</project>

.idea/vcs.xml

@@ -2,6 +2,5 @@
 <project version="4">
   <component name="VcsDirectoryMappings">
     <mapping directory="" vcs="Git" />
-    <mapping directory="$PROJECT_DIR$/gh-pages" vcs="Git" />
   </component>
 </project>

app/build.gradle

@@ -19,8 +19,8 @@ android {
         applicationId "xyz.quaver.pupil"
         minSdkVersion 16
         targetSdkVersion 29
-        versionCode 32
+        versionCode 33
-        versionName "4.3-hotfix1"
+        versionName "5.0"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         multiDexEnabled true
         vectorDrawables.useSupportLibrary = true
@@ -41,6 +41,9 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
+    kotlinOptions {
+        jvmTarget = JavaVersion.VERSION_1_8.toString()
+    }
     buildToolsVersion = '29.0.2'
 }
 
@@ -70,9 +73,11 @@ dependencies {
     implementation 'com.github.arimorty:floatingsearchview:2.1.1'
     implementation 'com.github.clans:fab:1.6.4'
     implementation 'com.github.bumptech.glide:glide:4.10.0'
-    implementation ("com.github.bumptech.glide:recyclerview-integration:4.10.0") {
+    implementation('com.github.bumptech.glide:recyclerview-integration:4.11.0') {
         transitive = false
     }
+    implementation 'net.rdrei.android.dirchooser:library:3.2@aar'
+    implementation 'com.gu:option:1.3'
     implementation 'com.github.chrisbanes:PhotoView:2.3.0'
     implementation 'com.andrognito.patternlockview:patternlockview:1.0.0'
     implementation "ru.noties.markwon:core:${markwonVersion}"

app/release/output.json

@@ -1 +1 @@
-[{"outputType":{"type":"APK"},"apkData":{"type":"MAIN","splits":[],"versionCode":32,"versionName":"4.3-hotfix1","enabled":true,"outputFile":"app-release.apk","fullName":"release","baseName":"release"},"path":"app-release.apk","properties":{}}]
+[{"outputType":{"type":"APK"},"apkData":{"type":"MAIN","splits":[],"versionCode":33,"versionName":"5.0","enabled":true,"outputFile":"app-release.apk","fullName":"release","baseName":"release"},"path":"app-release.apk","properties":{}}]

app/src/androidTest/java/xyz/quaver/pupil/ExampleInstrumentedTest.kt

@@ -25,6 +25,7 @@ import androidx.core.content.ContextCompat
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.rule.ActivityTestRule
+import kotlinx.coroutines.runBlocking
 import kotlinx.serialization.ImplicitReflectionSerializer
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.JsonConfiguration
@@ -37,6 +38,8 @@ import xyz.quaver.hiyobi.createImgList
 import xyz.quaver.hiyobi.getReader
 import xyz.quaver.hiyobi.user_agent
 import xyz.quaver.pupil.ui.LockActivity
+import xyz.quaver.pupil.util.download.Cache
+import xyz.quaver.pupil.util.download.DownloadWorker
 import xyz.quaver.pupil.util.getDownloadDirectory
 import xyz.quaver.pupil.util.updateOldReaderGalleries
 import java.io.File
@@ -118,4 +121,37 @@ class ExampleInstrumentedTest {
 
         updateOldReaderGalleries(context)
     }
+
+    @Test
+    fun test_downloadWorker() {
+        val context = InstrumentationRegistry.getInstrumentation().targetContext
+
+        val galleryID = 515515
+
+        val worker = DownloadWorker.getInstance(context)
+
+        worker.queue.add(galleryID)
+
+        while(worker.progress.indexOfKey(galleryID) < 0 || worker.progress[galleryID] != null) {
+            Log.i("PUPILD", worker.progress[galleryID]?.joinToString(" ") ?: "null")
+
+            if (worker.progress[galleryID]?.all { !it.isFinite() } == true)
+                break
+        }
+
+        Log.i("PUPILD", "DONE!!")
+    }
+
+    @Test
+    fun test_getReaderOrNull() {
+        val context = InstrumentationRegistry.getInstrumentation().targetContext
+
+        val galleryID = 1561552
+
+        runBlocking {
+            Log.i("PUPILD", Cache(context).getReader(galleryID)?.title ?: "null")
+        }
+
+        Log.i("PUPILD", Cache(context).getReaderOrNull(galleryID)?.title ?: "null")
+    }
 }

app/src/main/AndroidManifest.xml

@@ -6,6 +6,9 @@
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
     <uses-permission android:name="android.permission.USE_BIOMETRIC" />
+    <uses-permission
+        android:name="android.permission.WRITE_EXTERNAL_STORAGE"
+        android:maxSdkVersion="21" />
 
     <application
         android:name=".Pupil"
@@ -116,6 +119,7 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <activity android:name="net.rdrei.android.dirchooser.DirectoryChooserActivity" />
     </application>
 
 </manifest>

app/src/main/java/xyz/quaver/pupil/Pupil.kt

@@ -22,6 +22,7 @@ import android.app.Notification
 import android.app.NotificationChannel
 import android.app.NotificationManager
 import android.content.Context
+import android.net.Uri
 import android.os.Build
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.core.content.ContextCompat
@@ -30,17 +31,12 @@ import androidx.preference.PreferenceManager
 import com.google.android.gms.common.GooglePlayServicesNotAvailableException
 import com.google.android.gms.common.GooglePlayServicesRepairableException
 import com.google.android.gms.security.ProviderInstaller
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.launch
 import xyz.quaver.pupil.util.Histories
-import xyz.quaver.pupil.util.updateOldReaderGalleries
 import java.io.File
 
 class Pupil : MultiDexApplication() {
 
     lateinit var histories: Histories
-    lateinit var downloads: Histories
     lateinit var favorites: Histories
 
     init {
@@ -51,9 +47,15 @@ class Pupil : MultiDexApplication() {
         val preference = PreferenceManager.getDefaultSharedPreferences(this)
 
         histories = Histories(File(ContextCompat.getDataDir(this), "histories.json"))
-        downloads = Histories(File(ContextCompat.getDataDir(this), "downloads.json"))
         favorites = Histories(File(ContextCompat.getDataDir(this), "favorites.json"))
 
+        val download = preference.getString("dl_location", null)
+
+        if (download == null) {
+            val default = ContextCompat.getExternalFilesDirs(this, null)[0]
+            preference.edit().putString("dl_location", Uri.fromFile(default).toString()).apply()
+        }
+
         try {
             ProviderInstaller.installIfNeeded(this)
         } catch (e: GooglePlayServicesRepairableException) {
@@ -64,7 +66,7 @@ class Pupil : MultiDexApplication() {
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
             val manager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
-            val channel = NotificationChannel("download", getString(R.string.channel_download), NotificationManager.IMPORTANCE_LOW).apply {
+            val channel = NotificationChannel("download", getString(R.string.channel_download), NotificationManager.IMPORTANCE_MIN).apply {
                 description = getString(R.string.channel_download_description)
                 enableLights(false)
                 enableVibration(false)
@@ -73,15 +75,12 @@ class Pupil : MultiDexApplication() {
             manager.createNotificationChannel(channel)
         }
 
+        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true)
         AppCompatDelegate.setDefaultNightMode(when (preference.getBoolean("dark_mode", false)) {
             true -> AppCompatDelegate.MODE_NIGHT_YES
             false -> AppCompatDelegate.MODE_NIGHT_NO
         })
 
-        CoroutineScope(Dispatchers.IO).launch {
-            updateOldReaderGalleries(this@Pupil)
-        }
-
         super.onCreate()
     }
 

app/src/main/java/xyz/quaver/pupil/adapters/GalleryBlockAdapter.kt

@@ -18,7 +18,9 @@
 
 package xyz.quaver.pupil.adapters
 
+import android.content.Context
 import android.graphics.drawable.Drawable
+import android.util.Base64
 import android.util.SparseBooleanArray
 import android.view.LayoutInflater
 import android.view.View
@@ -27,9 +29,10 @@ import android.widget.LinearLayout
 import androidx.cardview.widget.CardView
 import androidx.core.content.ContextCompat
 import androidx.recyclerview.widget.RecyclerView
+import androidx.swiperefreshlayout.widget.CircularProgressDrawable
 import androidx.vectordrawable.graphics.drawable.Animatable2Compat
 import androidx.vectordrawable.graphics.drawable.AnimatedVectorDrawableCompat
-import com.bumptech.glide.RequestManager
+import com.bumptech.glide.Glide
 import com.bumptech.glide.load.engine.DiskCacheStrategy
 import com.daimajia.swipe.SwipeLayout
 import com.daimajia.swipe.adapters.RecyclerSwipeAdapter
@@ -37,28 +40,22 @@ import com.daimajia.swipe.interfaces.SwipeAdapterInterface
 import com.google.android.material.chip.Chip
 import kotlinx.android.synthetic.main.item_galleryblock.view.*
 import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Deferred
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
-import kotlinx.serialization.json.Json
-import kotlinx.serialization.json.JsonConfiguration
 import xyz.quaver.hitomi.GalleryBlock
-import xyz.quaver.hitomi.Reader
 import xyz.quaver.pupil.BuildConfig
 import xyz.quaver.pupil.Pupil
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.types.Tag
-import xyz.quaver.pupil.util.GalleryDownloader
 import xyz.quaver.pupil.util.Histories
-import xyz.quaver.pupil.util.getCachedGallery
+import xyz.quaver.pupil.util.download.Cache
+import xyz.quaver.pupil.util.download.DownloadWorker
 import xyz.quaver.pupil.util.wordCapitalize
-import java.io.File
 import java.util.*
 import kotlin.collections.ArrayList
-import kotlin.collections.HashMap
 import kotlin.concurrent.schedule
 
-class GalleryBlockAdapter(private val glide: RequestManager, private val galleries: List<Pair<GalleryBlock, Deferred<String>>>) : RecyclerSwipeAdapter<RecyclerView.ViewHolder>(), SwipeAdapterInterface {
+class GalleryBlockAdapter(context: Context, private val galleries: List<GalleryBlock>) : RecyclerSwipeAdapter<RecyclerView.ViewHolder>(), SwipeAdapterInterface {
 
     enum class ViewType {
         NEXT,
@@ -66,10 +63,56 @@ class GalleryBlockAdapter(private val glide: RequestManager, private val galleri
         PREV
     }
 
+    private val glide = Glide.with(context)
     private lateinit var favorites: Histories
 
+    val timer = Timer()
+
     inner class GalleryViewHolder(val view: View) : RecyclerView.ViewHolder(view) {
-        fun bind(item: Pair<GalleryBlock, Deferred<String>>) {
+        var timerTask: TimerTask? = null
+
+        fun updateProgress(context: Context, galleryID: Int) = CoroutineScope(Dispatchers.Main).launch {
+            val cache = Cache(context).getCachedGallery(galleryID)
+            val reader = Cache(context).getReaderOrNull(galleryID)
+
+            if (reader == null) {
+                view.galleryblock_progressbar.visibility = View.GONE
+                view.galleryblock_progress_complete.visibility = View.GONE
+                return@launch
+            }
+
+            with(view.galleryblock_progressbar) {
+
+                progress = cache?.listFiles()?.count { file ->
+                    Regex("^[0-9]+.+\$").matches(file.name!!)
+                } ?: 0
+
+                if (visibility == View.GONE) {
+                    visibility = View.VISIBLE
+                    max = reader.galleryInfo.size
+                }
+
+                if (progress == max) {
+                    if (completeFlag.get(galleryID, false)) {
+                        with(view.galleryblock_progress_complete) {
+                            setImageResource(R.drawable.ic_progressbar)
+                            visibility = View.VISIBLE
+                        }
+                    } else {
+                        with(view.galleryblock_progress_complete) {
+                            setImageDrawable(AnimatedVectorDrawableCompat.create(context, R.drawable.ic_progressbar_complete).apply {
+                                this?.start()
+                            })
+                            visibility = View.VISIBLE
+                        }
+                        completeFlag.put(galleryID, true)
+                    }
+                } else
+                    view.galleryblock_progress_complete.visibility = View.INVISIBLE
+            }
+        }
+
+        fun bind(galleryBlock: GalleryBlock) {
             with(view) {
                 val resources = context.resources
                 val languages = resources.getStringArray(R.array.languages).map {
@@ -78,16 +121,18 @@ class GalleryBlockAdapter(private val glide: RequestManager, private val galleri
                     }
                 }.toMap()
 
-                val (galleryBlock: GalleryBlock, thumbnail: Deferred<String>) = item
-
                 val artists = galleryBlock.artists
                 val series = galleryBlock.series
 
+                galleryblock_thumbnail.setImageDrawable(CircularProgressDrawable(context).also {
+                    it.start()
+                })
+
                 CoroutineScope(Dispatchers.Main).launch {
-                    val cache = thumbnail.await()
+                    val thumbnail = Base64.decode(Cache(context).getThumbnail(galleryBlock.id), Base64.DEFAULT)
 
                     glide
-                        .load(cache)
+                        .load(thumbnail)
                         .skipMemoryCache(true)
                         .diskCacheStrategy(DiskCacheStrategy.NONE)
                         .error(R.drawable.image_broken_variant)
@@ -99,75 +144,28 @@ class GalleryBlockAdapter(private val glide: RequestManager, private val galleri
                 }
 
                 //Check cache
-                val readerCache = { File(getCachedGallery(context, galleryBlock.id), "reader.json") }
+                val cache = Cache(context).getCachedGallery(galleryBlock.id)
-                val imageCache = { File(getCachedGallery(context, galleryBlock.id), "images") }
+                val reader = Cache(context).getReaderOrNull(galleryBlock.id)
 
-                try {
+                if (cache != null && reader != null) {
-                   Json(JsonConfiguration.Stable)
+                    val count = cache.listFiles().count {
-                        .parse(Reader.serializer(), readerCache.invoke().readText())
+                        Regex("^[0-9]+.+\$").matches(it.name!!)
-                } catch(e: Exception) {
+                    }
-                    readerCache.invoke().delete()
-                }
-
-                if (readerCache.invoke().exists()) {
-                    val reader = Json(JsonConfiguration.Stable)
-                        .parse(Reader.serializer(), readerCache.invoke().readText())
 
                     with(galleryblock_progressbar) {
                         max = reader.galleryInfo.size
-                        progress = imageCache.invoke().list()?.size ?: 0
+                        progress = count
 
                         visibility = View.VISIBLE
                     }
-                } else {
+                } else
                     galleryblock_progressbar.visibility = View.GONE
-                }
 
-                if (refreshTasks[this@GalleryViewHolder] == null) {
+                if (timerTask == null)
-                    val refresh = Timer(false).schedule(0, 1000) {
+                    timerTask = timer.schedule(0, 1000) {
-                        post {
+                        updateProgress(context, galleryBlock.id)
-                            with(view.galleryblock_progressbar) {
-                                progress = imageCache.invoke().list()?.size ?: 0
-
-                                if (!readerCache.invoke().exists()) {
-                                    visibility = View.GONE
-                                    max = 0
-                                    progress = 0
-
-                                    view.galleryblock_progress_complete.visibility = View.INVISIBLE
-                                } else {
-                                    if (visibility == View.GONE) {
-                                        val reader = Json(JsonConfiguration.Stable)
-                                            .parse(Reader.serializer(), readerCache.invoke().readText())
-                                        max = reader.galleryInfo.size
-                                        visibility = View.VISIBLE
-                                    }
-
-                                    if (progress == max) {
-                                        if (completeFlag.get(galleryBlock.id, false)) {
-                                            with(view.galleryblock_progress_complete) {
-                                                setImageResource(R.drawable.ic_progressbar)
-                                                visibility = View.VISIBLE
-                                            }
-                                        } else {
-                                            with(view.galleryblock_progress_complete) {
-                                                setImageDrawable(AnimatedVectorDrawableCompat.create(context, R.drawable.ic_progressbar_complete).apply {
-                                                    this?.start()
-                                                })
-                                                visibility = View.VISIBLE
-                                            }
-                                            completeFlag.put(galleryBlock.id, true)
-                                        }
-                                    } else
-                                        view.galleryblock_progress_complete.visibility = View.INVISIBLE
-                                }
-                            }
-                        }
                     }
 
-                    refreshTasks[this@GalleryViewHolder] = refresh
-                }
-
                 galleryblock_title.text = galleryBlock.title
                 with(galleryblock_artist) {
                     text = artists.joinToString(", ") { it.wordCapitalize() }
@@ -277,7 +275,6 @@ class GalleryBlockAdapter(private val glide: RequestManager, private val galleri
         }
     }
 
-    private val refreshTasks = HashMap<GalleryViewHolder, TimerTask>()
     val completeFlag = SparseBooleanArray()
 
     val onChipClickedHandler = ArrayList<((Tag) -> Unit)>()
@@ -336,10 +333,11 @@ class GalleryBlockAdapter(private val glide: RequestManager, private val galleri
                 override fun onStartOpen(layout: SwipeLayout?) {
                     mItemManger.closeAllExcept(layout)
 
-                    holder.view.galleryblock_download.text = when(GalleryDownloader.get(gallery.first.id)) {
+                    holder.view.galleryblock_download.text =
-                        null -> holder.view.context.getString(R.string.main_download)
+                        if (DownloadWorker.getInstance(holder.view.context).progress.indexOfKey(gallery.id) < 0)
-                        else -> holder.view.context.getString(android.R.string.cancel)
+                            holder.view.context.getString(R.string.main_download)
-                    }
+                        else
+                            holder.view.context.getString(android.R.string.cancel)
                 }
 
                 override fun onClose(layout: SwipeLayout?) {}
@@ -355,10 +353,8 @@ class GalleryBlockAdapter(private val glide: RequestManager, private val galleri
         super.onViewDetachedFromWindow(holder)
 
         if (holder is GalleryViewHolder) {
-            val task = refreshTasks[holder] ?: return
+            holder.timerTask?.cancel()
-
+            holder.timerTask = null
-            task.cancel()
-            refreshTasks.remove(holder)
         }
     }
 

app/src/main/java/xyz/quaver/pupil/adapters/MirrorAdapter.kt

@@ -0,0 +1,85 @@
+/*
+ *     Pupil, Hitomi.la viewer for Android
+ *     Copyright (C) 2020  tom5079
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package xyz.quaver.pupil.adapters
+
+import android.content.Context
+import android.view.LayoutInflater
+import android.view.MotionEvent
+import android.view.View
+import android.view.ViewGroup
+import androidx.preference.PreferenceManager
+import androidx.recyclerview.widget.RecyclerView
+import kotlinx.android.synthetic.main.item_mirrors.view.*
+import xyz.quaver.pupil.R
+import java.util.*
+
+class MirrorAdapter(context: Context) : RecyclerView.Adapter<MirrorAdapter.ViewHolder>() {
+
+    class ViewHolder(val view: View) : RecyclerView.ViewHolder(view)
+
+    val mirrors = context.resources.getStringArray(R.array.mirrors).map {
+        it.split('|').let { split ->
+            Pair(split.first(), split.last())
+        }
+    }.toMap()
+
+    val list = mirrors.keys.toMutableList().apply {
+        PreferenceManager.getDefaultSharedPreferences(context)
+            .getString("mirrors", "")!!
+            .split(">")
+            .reversed()
+            .forEach {
+                if (this.contains(it)) {
+                    this.remove(it)
+                    this.add(0, it)
+                }
+            }
+    }
+
+    val onItemMove : ((Int, Int) -> Unit) = { from, to ->
+        Collections.swap(list, from, to)
+        notifyItemMoved(from, to)
+        onItemMoved?.invoke(list)
+    }
+    var onStartDrag : ((ViewHolder) -> Unit)? = null
+    var onItemMoved : ((List<String>) -> (Unit))? = null
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        with(holder.view) {
+            mirror_name.text = mirrors[list.elementAt(position)]
+            mirror_button.setOnTouchListener { _, event ->
+                if (event.action == MotionEvent.ACTION_DOWN)
+                    onStartDrag?.invoke(holder)
+
+                true
+            }
+        }
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        return LayoutInflater.from(parent.context).inflate(
+            R.layout.item_mirrors, parent, false
+        ).let {
+            ViewHolder(it)
+        }
+    }
+
+    override fun getItemCount() = mirrors.size
+
+}

app/src/main/java/xyz/quaver/pupil/adapters/ReaderAdapter.kt

@@ -18,24 +18,48 @@
 
 package xyz.quaver.pupil.adapters
 
+import android.content.Context
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.ImageView
+import androidx.constraintlayout.widget.ConstraintLayout
 import androidx.recyclerview.widget.RecyclerView
-import com.bumptech.glide.RequestManager
+import com.bumptech.glide.Glide
 import com.bumptech.glide.load.engine.DiskCacheStrategy
+import com.google.android.material.snackbar.Snackbar
+import kotlinx.android.synthetic.main.item_reader.view.*
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import xyz.quaver.hitomi.Reader
 import xyz.quaver.pupil.BuildConfig
 import xyz.quaver.pupil.R
-import xyz.quaver.pupil.util.getCachedGallery
+import xyz.quaver.pupil.util.download.Cache
-import java.io.File
+import xyz.quaver.pupil.util.download.DownloadWorker
+import java.util.*
+import kotlin.concurrent.schedule
+import kotlin.math.roundToInt
 
-class ReaderAdapter(private val glide: RequestManager,
+class ReaderAdapter(private val context: Context,
-                    private val galleryID: Int,
+                    private val galleryID: Int) : RecyclerView.Adapter<ReaderAdapter.ViewHolder>() {
-                    private val images: List<String>) : RecyclerView.Adapter<ReaderAdapter.ViewHolder>() {
 
     var isFullScreen = false
 
+    var reader: Reader? = null
+    private val glide = Glide.with(context)
+    val timer = Timer()
+
+    var onItemClickListener : ((Int) -> (Unit))? = null
+
+    init {
+        CoroutineScope(Dispatchers.IO).launch {
+            reader = Cache(context).getReader(galleryID)
+            launch(Dispatchers.Main) {
+                notifyDataSetChanged()
+            }
+        }
+    }
+
     class ViewHolder(val view: View) : RecyclerView.ViewHolder(view)
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
@@ -47,26 +71,75 @@ class ReaderAdapter(private val glide: RequestManager,
     }
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        holder.view as ImageView
+        holder.view as ConstraintLayout
 
         if (isFullScreen)
             holder.view.layoutParams.height = RecyclerView.LayoutParams.MATCH_PARENT
         else
             holder.view.layoutParams.height = RecyclerView.LayoutParams.WRAP_CONTENT
 
-        glide
+        holder.view.image.setOnPhotoTapListener { _, _, _ ->
-            .load(File(getCachedGallery(holder.view.context, galleryID), images[position]))
+            onItemClickListener?.invoke(position)
-            .diskCacheStrategy(DiskCacheStrategy.NONE)
+        }
-            .skipMemoryCache(true)
+
-            .error(R.drawable.image_broken_variant)
+        holder.view.container.setOnClickListener {
-            .dontTransform()
+            onItemClickListener?.invoke(position)
-            .apply {
+        }
-                if (BuildConfig.CENSOR)
+
-                    override(5, 8)
+        (holder.view.container.layoutParams as ConstraintLayout.LayoutParams)
+            .dimensionRatio = "${reader!!.galleryInfo[position].width}:${reader!!.galleryInfo[position].height}"
+
+        holder.view.reader_index.text = (position+1).toString()
+
+        val images = Cache(context).getImages(galleryID)
+
+        if (images?.get(position) != null) {
+            glide
+                .load(images[position]?.uri)
+                .diskCacheStrategy(DiskCacheStrategy.NONE)
+                .skipMemoryCache(true)
+                .error(R.drawable.image_broken_variant)
+                .apply {
+                    if (BuildConfig.CENSOR)
+                        override(5, 8)
+                }
+                .into(holder.view.image)
+        } else {
+            val progress = DownloadWorker.getInstance(context).progress[galleryID]?.get(position)
+
+            if (progress?.isNaN() == true) {
+                glide
+                    .load(R.drawable.image_broken_variant)
+                    .into(holder.view.image)
+                Snackbar
+                    .make(
+                        holder.view,
+                        DownloadWorker.getInstance(context).exception[galleryID]!![position]?.message
+                            ?: context.getText(R.string.default_error_msg),
+                        Snackbar.LENGTH_INDEFINITE
+                    )
+                    .show()
+
+                return
             }
-            .into(holder.view)
+
+            holder.view.reader_item_progressbar.progress =
+                if (progress?.isInfinite() == true)
+                    100
+                else
+                    progress?.roundToInt() ?: 0
+
+            holder.view.image.setImageDrawable(null)
+
+
+            timer.schedule(1000) {
+                CoroutineScope(Dispatchers.Main).launch {
+                    notifyItemChanged(position)
+                }
+            }
+        }
     }
 
-    override fun getItemCount() = images.size
+    override fun getItemCount() = reader?.galleryInfo?.size ?: 0
 
 }

app/src/main/java/xyz/quaver/pupil/ui/MainActivity.kt

@@ -45,7 +45,6 @@ import androidx.vectordrawable.graphics.drawable.AnimatedVectorDrawableCompat
 import com.arlib.floatingsearchview.FloatingSearchView
 import com.arlib.floatingsearchview.suggestions.model.SearchSuggestion
 import com.arlib.floatingsearchview.util.view.SearchInputView
-import com.bumptech.glide.Glide
 import com.google.android.material.appbar.AppBarLayout
 import kotlinx.android.synthetic.main.activity_main.*
 import kotlinx.android.synthetic.main.activity_main_content.*
@@ -55,7 +54,10 @@ import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.JsonConfiguration
 import kotlinx.serialization.list
 import kotlinx.serialization.stringify
-import xyz.quaver.hitomi.*
+import xyz.quaver.hitomi.GalleryBlock
+import xyz.quaver.hitomi.doSearch
+import xyz.quaver.hitomi.getGalleryIDsFromNozomi
+import xyz.quaver.hitomi.getSuggestionsForQuery
 import xyz.quaver.pupil.Pupil
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.adapters.GalleryBlockAdapter
@@ -64,11 +66,10 @@ import xyz.quaver.pupil.types.TagSuggestion
 import xyz.quaver.pupil.types.Tags
 import xyz.quaver.pupil.ui.dialog.GalleryDialog
 import xyz.quaver.pupil.util.*
+import xyz.quaver.pupil.util.download.Cache
+import xyz.quaver.pupil.util.download.DownloadWorker
 import java.io.File
-import java.io.FileOutputStream
-import java.net.URL
 import java.util.*
-import javax.net.ssl.HttpsURLConnection
 import kotlin.collections.ArrayList
 import kotlin.math.abs
 import kotlin.math.ceil
@@ -89,7 +90,7 @@ class MainActivity : AppCompatActivity() {
         POPULAR
     }
 
-    private val galleries = ArrayList<Pair<GalleryBlock, Deferred<String>>>()
+    private val galleries = ArrayList<GalleryBlock>()
 
     private var query = ""
     set(value) {
@@ -112,7 +113,6 @@ class MainActivity : AppCompatActivity() {
     private var currentPage = 0
 
     private lateinit var histories: Histories
-    private lateinit var downloads: Histories
     private lateinit var favorites: Histories
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -128,6 +128,7 @@ class MainActivity : AppCompatActivity() {
                     finish()
                 }
             }.show()
+
             return
         }
 
@@ -150,7 +151,6 @@ class MainActivity : AppCompatActivity() {
 
         with(application as Pupil) {
             this@MainActivity.histories = histories
-            this@MainActivity.downloads = downloads
             this@MainActivity.favorites = favorites
         }
 
@@ -176,6 +176,12 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
+    override fun onDestroy() {
+        super.onDestroy()
+
+        (main_recyclerview.adapter as GalleryBlockAdapter).timer.cancel()
+    }
+
     override fun onResume() {
         val preferences = PreferenceManager.getDefaultSharedPreferences(this)
 
@@ -386,7 +392,7 @@ class MainActivity : AppCompatActivity() {
 
     private fun setupRecyclerView() {
         with(main_recyclerview) {
-            adapter = GalleryBlockAdapter(Glide.with(this@MainActivity), galleries).apply {
+            adapter = GalleryBlockAdapter(this@MainActivity, galleries).apply {
                 onChipClickedHandler.add {
                     runOnUiThread {
                         query = it.toQuery()
@@ -399,16 +405,18 @@ class MainActivity : AppCompatActivity() {
                     }
                 }
                 onDownloadClickedHandler = { position ->
-                    val galleryID = galleries[position].first.id
+                    val galleryID = galleries[position].id
 
                     if (!completeFlag.get(galleryID, false)) {
-                        val downloader = GalleryDownloader.get(galleryID)
+                        val worker = DownloadWorker.getInstance(context)
 
-                        if (downloader == null)
+                        if (worker.progress.indexOfKey(galleryID) >= 0)     //download in progress
-                            GalleryDownloader(context, galleryID, true).start()
+                            worker.cancel(galleryID)
                         else {
-                            downloader.cancel()
+                            Cache(context).setDownloading(galleryID, true)
-                            downloader.clearNotification()
+
+                            if (!worker.queue.contains(galleryID))
+                                worker.queue.add(galleryID)
                         }
                     }
 
@@ -416,39 +424,27 @@ class MainActivity : AppCompatActivity() {
                 }
 
                 onDeleteClickedHandler = { position ->
-                    val galleryID = galleries[position].first.id
+                    val galleryID = galleries[position].id
 
                     CoroutineScope(Dispatchers.Default).launch {
-                        with(GalleryDownloader[galleryID]) {
+                        DownloadWorker.getInstance(context).cancel(galleryID)
-                            this?.cancelAndJoin()
-                            this?.clearNotification()
-                        }
-                        val cache = File(cacheDir, "imageCache/${galleryID}")
-                        val data = getCachedGallery(context, galleryID)
-                        cache.deleteRecursively()
-                        data.deleteRecursively()
 
-                        downloads.remove(galleryID)
+                        var cache = Cache(context).getCachedGallery(galleryID)
 
-                        if (this@MainActivity.mode == Mode.DOWNLOAD) {
+                        while (cache != null) {
-                            runOnUiThread {
+                            cache.deleteRecursively()
-                                cancelFetch()
+                            cache = Cache(context).getCachedGallery(galleryID)
-                                clearGalleries()
-                                fetchGalleries(query, sortMode)
-                                loadBlocks()
-                            }
                         }
 
                         histories.remove(galleryID)
 
-                        if (this@MainActivity.mode == Mode.HISTORY) {
+                        if (this@MainActivity.mode != Mode.SEARCH)
                             runOnUiThread {
                                 cancelFetch()
                                 clearGalleries()
                                 fetchGalleries(query, sortMode)
                                 loadBlocks()
                             }
-                        }
 
                         completeFlag.put(galleryID, false)
                     }
@@ -462,7 +458,7 @@ class MainActivity : AppCompatActivity() {
                         return@setOnItemClickListener
 
                     val intent = Intent(this@MainActivity, ReaderActivity::class.java)
-                    val gallery = galleries[position].first
+                    val gallery = galleries[position]
                     intent.putExtra("galleryID", gallery.id)
 
                     //TODO: Maybe sprinkling some transitions will be nice :D
@@ -474,7 +470,7 @@ class MainActivity : AppCompatActivity() {
                     if (v !is CardView)
                         return@setOnItemLongClickListener true
 
-                    val galleryID = galleries[position].first.id
+                    val galleryID = galleries[position].id
 
                     GalleryDialog(
                         this@MainActivity,
@@ -973,8 +969,14 @@ class MainActivity : AppCompatActivity() {
                     }
                 }
                 Mode.DOWNLOAD -> {
+                    val downloads = getDownloadDirectory(this@MainActivity)?.listFiles()?.filter { file ->
+                        file.isDirectory && (file.name!!.toIntOrNull() != null) && file.findFile(".metadata") != null
+                    }?.map {
+                        it.name!!.toInt()
+                    }?: listOf()
+
                     when {
-                        query.isEmpty() -> downloads.toList().apply {
+                        query.isEmpty() -> downloads.apply {
                             totalItems = size
                         }
                         else -> {
@@ -1022,48 +1024,7 @@ class MainActivity : AppCompatActivity() {
                 for (chunk in chunks)
                     chunk.map { galleryID ->
                         async {
-                            try {
+                            Cache(this@MainActivity).getGalleryBlock(galleryID)
-                                val json = Json(JsonConfiguration.Stable)
-                                val serializer = GalleryBlock.serializer()
-
-                                val galleryBlock =
-                                    File(getCachedGallery(this@MainActivity, galleryID), "galleryBlock.json").let { cache ->
-                                        when {
-                                            cache.exists() -> json.parse(serializer, cache.readText())
-                                            else -> {
-                                                getGalleryBlock(galleryID).apply {
-                                                    this ?: return@apply
-
-                                                    if (cache.parentFile?.exists() == false)
-                                                        cache.parentFile!!.mkdirs()
-
-                                                    cache.writeText(json.stringify(serializer, this))
-                                                }
-                                            }
-                                        }
-                                    } ?: return@async null
-
-                                val thumbnail = async {
-                                    val ext = galleryBlock.thumbnails[0].split('.').last()
-                                    File(getCachedGallery(this@MainActivity, galleryBlock.id), "thumbnail.$ext").apply {
-                                        if (!exists())
-                                            try {
-                                                with(URL(galleryBlock.thumbnails[0]).openConnection() as HttpsURLConnection) {
-                                                    if (this@apply.parentFile?.exists() == false)
-                                                        this@apply.parentFile!!.mkdirs()
-
-                                                    inputStream.copyTo(FileOutputStream(this@apply))
-                                                }
-                                            } catch (e: Exception) {
-                                                delete()
-                                            }
-                                    }.absolutePath
-                                }
-
-                                Pair(galleryBlock, thumbnail)
-                            } catch (e: Exception) {
-                                null
-                            }
                         }
                     }.forEach {
                         val galleryBlock = it.await()

app/src/main/java/xyz/quaver/pupil/ui/ReaderActivity.kt

@@ -21,40 +21,37 @@ package xyz.quaver.pupil.ui
 import android.content.Intent
 import android.graphics.drawable.Animatable
 import android.graphics.drawable.Drawable
-import android.net.Uri
 import android.os.Bundle
 import android.view.*
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
+import androidx.core.content.ContextCompat
 import androidx.preference.PreferenceManager
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.PagerSnapHelper
 import androidx.recyclerview.widget.RecyclerView
 import androidx.vectordrawable.graphics.drawable.Animatable2Compat
 import androidx.vectordrawable.graphics.drawable.AnimatedVectorDrawableCompat
-import com.bumptech.glide.Glide
 import com.crashlytics.android.Crashlytics
 import com.google.android.material.snackbar.Snackbar
 import io.fabric.sdk.android.Fabric
 import kotlinx.android.synthetic.main.activity_reader.*
 import kotlinx.android.synthetic.main.activity_reader.view.*
 import kotlinx.android.synthetic.main.dialog_numberpicker.view.*
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.launch
 import kotlinx.serialization.ImplicitReflectionSerializer
+import xyz.quaver.Code
 import xyz.quaver.pupil.Pupil
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.adapters.ReaderAdapter
-import xyz.quaver.pupil.util.GalleryDownloader
 import xyz.quaver.pupil.util.Histories
-import xyz.quaver.pupil.util.ItemClickSupport
+import xyz.quaver.pupil.util.download.Cache
+import xyz.quaver.pupil.util.download.DownloadWorker
+import java.util.*
+import kotlin.concurrent.schedule
 
 class ReaderActivity : AppCompatActivity() {
 
     private var galleryID = 0
-    private val images = ArrayList<String>()
-    private var gallerySize = 0
     private var currentPage = 0
 
     private var isScroll = true
@@ -70,7 +67,7 @@ class ReaderActivity : AppCompatActivity() {
         }
     }
 
-    private lateinit var downloader: GalleryDownloader
+    private val timer = Timer()
 
     private val snapHelper = PagerSnapHelper()
 
@@ -102,12 +99,8 @@ class ReaderActivity : AppCompatActivity() {
             return
         }
 
-        initDownloader()
-
         initView()
-
+        initDownloader()
-        if (!downloader.download)
-            downloader.start()
     }
 
     override fun onNewIntent(intent: Intent) {
@@ -169,7 +162,7 @@ class ReaderActivity : AppCompatActivity() {
                 val view = LayoutInflater.from(this).inflate(R.layout.dialog_numberpicker, findViewById(android.R.id.content), false)
                 with(view.dialog_number_picker) {
                     minValue=1
-                    maxValue=gallerySize
+                    maxValue=reader_recyclerview.adapter?.itemCount ?: 0
                     value=currentPage
                 }
                 val dialog = AlertDialog.Builder(this).apply {
@@ -202,8 +195,11 @@ class ReaderActivity : AppCompatActivity() {
     override fun onDestroy() {
         super.onDestroy()
 
-        if (::downloader.isInitialized && !downloader.download)
+        timer.cancel()
-            downloader.cancel()
+        (reader_recyclerview.adapter as ReaderAdapter).timer.cancel()
+
+        if (!Cache(this).isDownloading(galleryID))
+            DownloadWorker.getInstance(this@ReaderActivity).cancel(galleryID)
     }
 
     override fun onBackPressed() {
@@ -239,101 +235,66 @@ class ReaderActivity : AppCompatActivity() {
     }
 
     private fun initDownloader() {
-        var d: GalleryDownloader? = GalleryDownloader.get(galleryID)
+        val worker = DownloadWorker.getInstance(this).apply {
-
+            queue.add(galleryID)
-        if (d == null)
-            d = GalleryDownloader(this, galleryID)
-
-        downloader = d.apply {
-            onReaderLoadedHandler = {
-                CoroutineScope(Dispatchers.Main).launch {
-                    title = it.title
-                    with(reader_download_progressbar) {
-                        max = it.galleryInfo.size
-                        progress = 0
-                    }
-                    with(reader_progressbar) {
-                        max = it.galleryInfo.size
-                        progress = 0
-                    }
-
-                    gallerySize = it.galleryInfo.size
-                    menu?.findItem(R.id.reader_menu_page_indicator)?.title = "$currentPage/${it.galleryInfo.size}"
-                }
-            }
-            onProgressHandler = {
-                CoroutineScope(Dispatchers.Main).launch {
-                    reader_download_progressbar.progress = it
-                    menu?.findItem(R.id.reader_menu_use_hiyobi)?.isVisible = downloader.useHiyobi
-                }
-            }
-            onDownloadedHandler = {
-                val item = it.toList()
-                CoroutineScope(Dispatchers.Main).launch {
-                    if (images.isEmpty()) {
-                        images.addAll(item)
-                        reader_recyclerview.adapter?.notifyDataSetChanged()
-                    } else {
-                        images.add(item.last())
-                        reader_recyclerview.adapter?.notifyItemInserted(images.size-1)
-                    }
-                }
-            }
-            onErrorHandler = {
-                Snackbar
-                    .make(reader_layout, it.message ?: it.javaClass.name, Snackbar.LENGTH_INDEFINITE)
-                    .setAction(R.string.reader_help) {
-                        startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.error_help))))
-                    }
-                    .show()
-                downloader.download = false
-            }
-            onCompleteHandler = {
-                CoroutineScope(Dispatchers.Main).launch {
-                    reader_download_progressbar.visibility = View.GONE
-                }
-            }
-            onNotifyChangedHandler = { notify ->
-                val fab = reader_fab_download
-
-                runOnUiThread {
-                    if (notify) {
-                        val icon = AnimatedVectorDrawableCompat.create(this, R.drawable.ic_downloading)
-                        icon?.registerAnimationCallback(object: Animatable2Compat.AnimationCallback() {
-                            override fun onAnimationEnd(drawable: Drawable?) {
-                                if (downloader.download)
-                                    fab.post {
-                                        icon.start()
-                                        fab.labelText = getString(R.string.reader_fab_download_cancel)
-                                    }
-                                else
-                                    fab.post {
-                                        fab.setImageResource(R.drawable.ic_download)
-                                        fab.labelText = getString(R.string.reader_fab_download)
-                                    }
-                            }
-                        })
-
-                        fab.setImageDrawable(icon)
-                        icon?.start()
-                    } else {
-                        runOnUiThread {
-                            fab.setImageResource(R.drawable.ic_download)
-                        }
-                    }
-                }
-            }
         }
 
-        if (downloader.download) {
+        timer.schedule(0, 1000) {
-            downloader.invokeOnReaderLoaded()
+            if (worker.progress.indexOfKey(galleryID) < 0)  //loading
-            downloader.invokeOnNotifyChanged()
+                return@schedule
+
+            if (worker.progress[galleryID] == null) {      //Gallery not found
+                timer.cancel()
+                Snackbar
+                    .make(reader_layout, R.string.reader_failed_to_find_gallery, Snackbar.LENGTH_INDEFINITE)
+                    .show()
+            }
+
+            runOnUiThread {
+                reader_download_progressbar.max = reader_recyclerview.adapter?.itemCount ?: 0
+                reader_download_progressbar.progress = worker.progress[galleryID]?.count { !it.isFinite() } ?: 0
+                reader_progressbar.max = reader_recyclerview.adapter?.itemCount ?: 0
+
+                if (title == getString(R.string.reader_loading)) {
+                    val reader = (reader_recyclerview.adapter as ReaderAdapter).reader
+
+                    if (reader != null) {
+                        title = reader.title
+                        menu?.findItem(R.id.reader_menu_page_indicator)?.title = "$currentPage/${reader.galleryInfo.size}"
+
+                        menu?.findItem(R.id.reader_type)?.icon = ContextCompat.getDrawable(this@ReaderActivity,
+                            when (reader.code) {
+                                Code.HITOMI -> R.drawable.hitomi
+                                Code.HIYOBI -> R.drawable.ic_hiyobi
+                                else -> android.R.color.transparent
+                            })
+                    }
+                }
+
+                if (worker.progress[galleryID]?.all { !it.isFinite() } == true) {   //Download finished
+                    reader_download_progressbar.visibility = View.GONE
+
+                    animateDownloadFAB(false)
+                }
+            }
         }
     }
 
     private fun initView() {
         with(reader_recyclerview) {
-            adapter = ReaderAdapter(Glide.with(this@ReaderActivity), galleryID, images)
+            adapter = ReaderAdapter(this@ReaderActivity, galleryID).apply {
+                onItemClickListener = {
+                    if (isScroll) {
+                        isScroll = false
+                        isFullscreen = true
+
+                        scrollMode(false)
+                        fullscreen(true)
+                    } else {
+                        (reader_recyclerview.layoutManager as LinearLayoutManager?)?.scrollToPosition(currentPage) //Moves to next page because currentPage is 1-based indexing
+                    }
+                }
+            }
 
             addOnScrollListener(object: RecyclerView.OnScrollListener() {
                 override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
@@ -349,32 +310,24 @@ class ReaderActivity : AppCompatActivity() {
                     if (layoutManager.findFirstVisibleItemPosition() == -1)
                         return
                     currentPage = layoutManager.findFirstVisibleItemPosition()+1
-                    menu?.findItem(R.id.reader_menu_page_indicator)?.title = "$currentPage/$gallerySize"
+                    menu?.findItem(R.id.reader_menu_page_indicator)?.title = "$currentPage/${recyclerView.adapter!!.itemCount}"
                     this@ReaderActivity.reader_progressbar.progress = currentPage
                 }
             })
-
-            ItemClickSupport.addTo(this)
-                .setOnItemClickListener { _, _, _ ->
-                    if (isScroll) {
-                        isScroll = false
-                        isFullscreen = true
-
-                        scrollMode(false)
-                        fullscreen(true)
-                    } else {
-                        (reader_recyclerview.layoutManager as LinearLayoutManager?)?.scrollToPosition(currentPage) //Moves to next page because currentPage is 1-based indexing
-                    }
-                }
         }
 
         with(reader_fab_download) {
-            setImageResource(R.drawable.ic_download)
+            animateDownloadFAB(Cache(context).isDownloading(galleryID)) //If download in progress, animate button
-            setOnClickListener {
-                downloader.download = !downloader.download
 
-                if (!downloader.download)
+            setOnClickListener {
-                    downloader.clearNotification()
+                if (Cache(context).isDownloading(galleryID)) {
+                   Cache(context).setDownloading(galleryID, false)
+
+                    animateDownloadFAB(false)
+                } else {
+                    Cache(context).setDownloading(galleryID, true)
+                    animateDownloadFAB(true)
+                }
             }
         }
 
@@ -416,4 +369,34 @@ class ReaderActivity : AppCompatActivity() {
 
         (reader_recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(currentPage-1, 0)
     }
+
+    private fun animateDownloadFAB(animate: Boolean) {
+        with(reader_fab_download) {
+            if (animate) {
+                val icon = AnimatedVectorDrawableCompat.create(context, R.drawable.ic_downloading)
+
+                icon?.registerAnimationCallback(object : Animatable2Compat.AnimationCallback() {
+                    override fun onAnimationEnd(drawable: Drawable?) {
+                        val worker = DownloadWorker.getInstance(context)
+                        if (worker.progress[galleryID]?.all { !it.isFinite() } == true) // If download is finished, stop animating
+                            post {
+                                setImageResource(R.drawable.ic_download)
+                                labelText = getString(R.string.reader_fab_download)
+                            }
+                        else                                                            // Or continue animate
+                            post {
+                                icon.start()
+                                labelText = getString(R.string.reader_fab_download_cancel)
+                            }
+                    }
+                })
+
+                setImageDrawable(icon)
+                icon?.start()
+            } else {
+                setImageResource(R.drawable.ic_download)
+                labelText = getString(R.string.reader_fab_download)
+            }
+        }
+    }
 }

app/src/main/java/xyz/quaver/pupil/ui/SettingsActivity.kt

@@ -20,26 +20,33 @@ package xyz.quaver.pupil.ui
 
 import android.app.Activity
 import android.content.Intent
+import android.net.Uri
+import android.os.Build
 import android.os.Bundle
 import android.view.MenuItem
 import android.view.WindowManager
 import androidx.appcompat.app.AppCompatActivity
+import androidx.documentfile.provider.DocumentFile
 import androidx.preference.PreferenceManager
 import com.google.android.material.snackbar.Snackbar
+import kotlinx.android.synthetic.main.settings_activity.*
 import kotlinx.serialization.ImplicitReflectionSerializer
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.parseList
+import net.rdrei.android.dirchooser.DirectoryChooserActivity
 import xyz.quaver.pupil.Pupil
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.ui.fragment.LockFragment
 import xyz.quaver.pupil.ui.fragment.SettingsFragment
+import xyz.quaver.pupil.util.REQUEST_DOWNLOAD_FOLDER
+import xyz.quaver.pupil.util.REQUEST_DOWNLOAD_FOLDER_OLD
+import xyz.quaver.pupil.util.REQUEST_LOCK
+import xyz.quaver.pupil.util.REQUEST_RESTORE
+import java.io.File
 import java.nio.charset.Charset
 
 class SettingsActivity : AppCompatActivity() {
 
-    val REQUEST_LOCK = 38238
-    val REQUEST_RESTORE = 16546
-
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
@@ -114,6 +121,35 @@ class SettingsActivity : AppCompatActivity() {
                     }
                 }
             }
+            REQUEST_DOWNLOAD_FOLDER -> {
+                if (resultCode == Activity.RESULT_OK) {
+                    data?.data?.also { uri ->
+                        val takeFlags: Int = intent.flags and (Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
+
+                        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT)
+                            contentResolver.takePersistableUriPermission(uri, takeFlags)
+
+                        if (DocumentFile.fromTreeUri(this, uri)?.canWrite() == false)
+                            Snackbar.make(settings, R.string.settings_dl_location_not_writable, Snackbar.LENGTH_LONG).show()
+                        else
+                            PreferenceManager.getDefaultSharedPreferences(this).edit()
+                                .putString("dl_location", uri.toString())
+                                .apply()
+                    }
+                }
+            }
+            REQUEST_DOWNLOAD_FOLDER_OLD -> {
+                if (resultCode == DirectoryChooserActivity.RESULT_CODE_DIR_SELECTED) {
+                    val directory = data?.getStringExtra(DirectoryChooserActivity.RESULT_SELECTED_DIR)!!
+
+                    if (!File(directory).canWrite())
+                        Snackbar.make(settings, R.string.settings_dl_location_not_writable, Snackbar.LENGTH_LONG).show()
+                    else
+                        PreferenceManager.getDefaultSharedPreferences(this).edit()
+                            .putString("dl_location", Uri.fromFile(File(directory)).toString())
+                            .apply()
+                }
+            }
             else -> super.onActivityResult(requestCode, resultCode, data)
         }
     }

app/src/main/java/xyz/quaver/pupil/ui/dialog/DefaultQueryDialog.kt

@@ -19,6 +19,7 @@
 package xyz.quaver.pupil.ui.dialog
 
 import android.annotation.SuppressLint
+import android.app.Dialog
 import android.content.Context
 import android.os.Bundle
 import android.text.Editable
@@ -28,6 +29,7 @@ import android.view.View
 import android.widget.ArrayAdapter
 import androidx.appcompat.app.AlertDialog
 import androidx.preference.PreferenceManager
+import kotlinx.android.synthetic.main.dialog_default_query.*
 import kotlinx.android.synthetic.main.dialog_default_query.view.*
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.types.Tags
@@ -50,21 +52,41 @@ class DefaultQueryDialog(context : Context) : AlertDialog(context) {
 
     @SuppressLint("InflateParams")
     override fun onCreate(savedInstanceState: Bundle?) {
+        initDialog()
+
+        setTitle(R.string.default_query_dialog_title)
+        setView(dialogView)
+        setButton(Dialog.BUTTON_POSITIVE, context.getString(android.R.string.ok)) { _, _ ->
+            val newTags = Tags.parse(default_query_dialog_edittext.text.toString())
+
+            with(default_query_dialog_language_selector) {
+                if (selectedItemPosition != 0)
+                    newTags.add("language:${reverseLanguages[selectedItem]}")
+            }
+
+            if (default_query_dialog_BL_checkbox.isChecked)
+                newTags.add(excludeBL)
+
+            if (default_query_dialog_guro_checkbox.isChecked)
+                excludeGuro.forEach { tag ->
+                    newTags.add(tag)
+                }
+
+            onPositiveButtonClickListener?.invoke(newTags)
+        }
+
         super.onCreate(savedInstanceState)
-
-        dialogView = LayoutInflater.from(context).inflate(R.layout.dialog_default_query, null)
-
-        initView()
-
-        setContentView(dialogView)
     }
 
-    private fun initView() {
+    @SuppressLint("InflateParams")
+    private fun initDialog() {
         val preferences = PreferenceManager.getDefaultSharedPreferences(context)
         val tags = Tags.parse(
             preferences.getString("default_query", "") ?: ""
         )
 
+        dialogView = LayoutInflater.from(context).inflate(R.layout.dialog_default_query, null)
+
         with(dialogView.default_query_dialog_language_selector) {
             adapter =
                 ArrayAdapter(
@@ -105,7 +127,13 @@ class DefaultQueryDialog(context : Context) : AlertDialog(context) {
         with(dialogView.default_query_dialog_edittext) {
             setText(tags.toString(), android.widget.TextView.BufferType.EDITABLE)
             addTextChangedListener(object : TextWatcher {
-                override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {}
+                override fun beforeTextChanged(
+                    s: CharSequence?,
+                    start: Int,
+                    count: Int,
+                    after: Int
+                ) {
+                }
 
                 override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {}
 
@@ -113,29 +141,14 @@ class DefaultQueryDialog(context : Context) : AlertDialog(context) {
                     s ?: return
 
                     if (s.any { it.isUpperCase() })
-                        s.replace(0, s.length, s.toString().toLowerCase(java.util.Locale.getDefault()))
+                        s.replace(
+                            0,
+                            s.length,
+                            s.toString().toLowerCase(java.util.Locale.getDefault())
+                        )
                 }
             })
         }
-
-        dialogView.default_query_dialog_ok.setOnClickListener {
-            val newTags = Tags.parse(dialogView.default_query_dialog_edittext.text.toString())
-
-            with(dialogView.default_query_dialog_language_selector) {
-                if (selectedItemPosition != 0)
-                    newTags.add("language:${reverseLanguages[selectedItem]}")
-            }
-
-            if (dialogView.default_query_dialog_BL_checkbox.isChecked)
-                newTags.add(excludeBL)
-
-            if (dialogView.default_query_dialog_guro_checkbox.isChecked)
-                excludeGuro.forEach { tag ->
-                    newTags.add(tag)
-                }
-
-            onPositiveButtonClickListener?.invoke(newTags)
-        }
     }
 
 }

app/src/main/java/xyz/quaver/pupil/ui/dialog/DownloadLocationDialog.kt

@@ -19,28 +19,37 @@
 package xyz.quaver.pupil.ui.dialog
 
 import android.annotation.SuppressLint
+import android.app.Activity
 import android.app.Dialog
-import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.os.Build
+import android.os.Bundle
 import android.widget.LinearLayout
 import android.widget.RadioButton
 import androidx.appcompat.app.AlertDialog
 import androidx.core.content.ContextCompat
 import androidx.preference.PreferenceManager
 import kotlinx.android.synthetic.main.item_dl_location.view.*
+import net.rdrei.android.dirchooser.DirectoryChooserActivity
+import net.rdrei.android.dirchooser.DirectoryChooserConfig
 import xyz.quaver.pupil.R
+import xyz.quaver.pupil.util.REQUEST_DOWNLOAD_FOLDER
+import xyz.quaver.pupil.util.REQUEST_DOWNLOAD_FOLDER_OLD
 import xyz.quaver.pupil.util.byteToString
 
 @SuppressLint("InflateParams")
-class DownloadLocationDialog(context: Context) : AlertDialog(context) {
+class DownloadLocationDialog(val activity: Activity) : AlertDialog(activity) {
 
     private val preference = PreferenceManager.getDefaultSharedPreferences(context)
-    private val buttons = mutableListOf<RadioButton>()
+    private val buttons = mutableListOf<Pair<RadioButton, Uri?>>()
-    var onDownloadLocationChangedListener : ((Int) -> (Unit))? = null
 
-    init {
+    override fun onCreate(savedInstanceState: Bundle?) {
         val view = layoutInflater.inflate(R.layout.dialog_dl_location, null) as LinearLayout
 
-        ContextCompat.getExternalFilesDirs(context, null).forEachIndexed { index, dir ->
+        val externalFilesDirs = ContextCompat.getExternalFilesDirs(context, null)
+
+        externalFilesDirs.forEachIndexed { index, dir ->
 
             dir ?: return@forEachIndexed
 
@@ -54,17 +63,58 @@ class DownloadLocationDialog(context: Context) : AlertDialog(context) {
                     byteToString(dir.freeSpace)
                 )
                 setOnClickListener {
-                    buttons.forEach { button ->
+                    buttons.forEach { pair ->
-                        button.isChecked = false
+                        pair.first.isChecked = false
                     }
                     button.performClick()
-                    onDownloadLocationChangedListener?.invoke(index)
+                    preference.edit().putString("dl_location", Uri.fromFile(dir).toString()).apply()
                 }
-                buttons.add(button)
+                buttons.add(button to Uri.fromFile(dir))
             })
         }
 
-        buttons[preference.getInt("dl_location", 0)].isChecked = true
+        view.addView(layoutInflater.inflate(R.layout.item_dl_location, view, false).apply {
+            location_type.text = context.getString(R.string.settings_dl_location_custom)
+            setOnClickListener {
+                buttons.forEach { pair ->
+                    pair.first.isChecked = false
+                }
+                button.performClick()
+
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+                    val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE).apply {
+                        putExtra("android.content.extra.SHOW_ADVANCED", true)
+                    }
+
+                    activity.startActivityForResult(intent, REQUEST_DOWNLOAD_FOLDER)
+
+                    dismiss()
+                } else {    // Can't use SAF on old Androids!
+                    val config = DirectoryChooserConfig.builder()
+                        .newDirectoryName("Pupil")
+                        .allowNewDirectoryNameModification(true)
+                        .build()
+
+                    val intent = Intent(context, DirectoryChooserActivity::class.java).apply {
+                        putExtra(DirectoryChooserActivity.EXTRA_CONFIG, config)
+                    }
+
+                    activity.startActivityForResult(intent, REQUEST_DOWNLOAD_FOLDER_OLD)
+                    dismiss()
+                }
+            }
+            buttons.add(button to null)
+        })
+
+        val pref = Uri.parse(preference.getString("dl_location", null))
+        val index = externalFilesDirs.indexOfFirst {
+            Uri.fromFile(it).toString() == pref.toString()
+        }
+
+        if (index < 0)
+            buttons.last().first.isChecked = true
+        else
+            buttons[index].first.isChecked = true
 
         setTitle(R.string.settings_dl_location)
 
@@ -73,6 +123,8 @@ class DownloadLocationDialog(context: Context) : AlertDialog(context) {
         setButton(Dialog.BUTTON_POSITIVE, context.getText(android.R.string.ok)) { _, _ ->
             dismiss()
         }
+
+        super.onCreate(savedInstanceState)
     }
 
 }

app/src/main/java/xyz/quaver/pupil/ui/dialog/GalleryDialog.kt

@@ -32,14 +32,16 @@ import androidx.recyclerview.widget.RecyclerView
 import com.bumptech.glide.Glide
 import com.google.android.material.chip.Chip
 import com.google.android.material.snackbar.Snackbar
-import kotlinx.android.synthetic.main.dialog_galleryblock.*
+import kotlinx.android.synthetic.main.dialog_gallery.*
 import kotlinx.android.synthetic.main.gallery_details.view.*
 import kotlinx.android.synthetic.main.item_gallery_details.view.*
-import kotlinx.coroutines.*
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.async
+import kotlinx.coroutines.launch
 import xyz.quaver.hitomi.Gallery
 import xyz.quaver.hitomi.GalleryBlock
 import xyz.quaver.hitomi.getGallery
-import xyz.quaver.hitomi.getGalleryBlock
 import xyz.quaver.pupil.BuildConfig
 import xyz.quaver.pupil.Pupil
 import xyz.quaver.pupil.R
@@ -48,6 +50,7 @@ import xyz.quaver.pupil.adapters.ThumbnailAdapter
 import xyz.quaver.pupil.types.Tag
 import xyz.quaver.pupil.ui.ReaderActivity
 import xyz.quaver.pupil.util.ItemClickSupport
+import xyz.quaver.pupil.util.download.Cache
 import xyz.quaver.pupil.util.wordCapitalize
 
 class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(context) {
@@ -64,7 +67,7 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.dialog_galleryblock)
+        setContentView(R.layout.dialog_gallery)
 
         window?.attributes.apply {
             this ?: return@apply
@@ -183,6 +186,8 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
                                     else -> tag.tag.wordCapitalize()
                                 }
 
+                                setEnsureMinTouchTargetSize(false)
+
                                 setOnClickListener {
                                     onChipClickedHandler.forEach { handler ->
                                         handler.invoke(tag)
@@ -219,9 +224,9 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
 
     private fun addRelated(gallery: Gallery) {
         val inflater = LayoutInflater.from(context)
-        val galleries = ArrayList<Pair<GalleryBlock, Deferred<String>>>()
+        val galleries = ArrayList<GalleryBlock>()
 
-        val adapter = GalleryBlockAdapter(glide, galleries).apply {
+        val adapter = GalleryBlockAdapter(context, galleries).apply {
             onChipClickedHandler.add { tag ->
                 this@GalleryDialog.onChipClickedHandler.forEach { handler ->
                     handler.invoke(tag)
@@ -232,11 +237,11 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
         CoroutineScope(Dispatchers.Main).launch {
             gallery.related.forEachIndexed { i, galleryID ->
                 async(Dispatchers.IO) {
-                    getGalleryBlock(galleryID)
+                    Cache(context).getGalleryBlock(galleryID)
                 }.let {
                     val galleryBlock = it.await() ?: return@let
 
-                    galleries.add(Pair(galleryBlock, GlobalScope.async { galleryBlock.thumbnails.first() }))
+                    galleries.add(galleryBlock)
                     adapter.notifyItemInserted(i)
                 }
             }
@@ -252,14 +257,14 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
                 ItemClickSupport.addTo(this)
                     .setOnItemClickListener { _, position, _ ->
                         context.startActivity(Intent(context, ReaderActivity::class.java).apply {
-                            putExtra("galleryID", galleries[position].first.id)
+                            putExtra("galleryID", galleries[position].id)
                         })
-                        (context.applicationContext as Pupil).histories.add(galleries[position].first.id)
+                        (context.applicationContext as Pupil).histories.add(galleries[position].id)
                     }
                     .setOnItemLongClickListener { _, position, _ ->
                         GalleryDialog(
                             context,
-                            galleries[position].first.id
+                            galleries[position].id
                         ).apply {
                             onChipClickedHandler.add { tag ->
                                 this@GalleryDialog.onChipClickedHandler.forEach { it.invoke(tag) }

app/src/main/java/xyz/quaver/pupil/ui/dialog/MirrorDialog.kt

@@ -0,0 +1,97 @@
+/*
+ *     Pupil, Hitomi.la viewer for Android
+ *     Copyright (C) 2020  tom5079
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package xyz.quaver.pupil.ui.dialog
+
+import android.annotation.SuppressLint
+import android.app.Dialog
+import android.content.Context
+import android.os.Bundle
+import androidx.appcompat.app.AlertDialog
+import androidx.preference.PreferenceManager
+import androidx.recyclerview.widget.DividerItemDecoration
+import androidx.recyclerview.widget.ItemTouchHelper
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import xyz.quaver.pupil.R
+import xyz.quaver.pupil.adapters.MirrorAdapter
+
+class MirrorDialog(context: Context) : AlertDialog(context) {
+
+    class ItemTouchHelperCallback : ItemTouchHelper.Callback() {
+
+        var onMoveItem : ((Int, Int) -> (Unit))? = null
+
+        override fun getMovementFlags(
+            recyclerView: RecyclerView,
+            viewHolder: RecyclerView.ViewHolder
+        ) = makeMovementFlags(ItemTouchHelper.UP or ItemTouchHelper.DOWN, 0)
+
+        override fun onMove(
+            recyclerView: RecyclerView,
+            viewHolder: RecyclerView.ViewHolder,
+            target: RecyclerView.ViewHolder
+        ): Boolean {
+            onMoveItem?.invoke(viewHolder.adapterPosition, target.adapterPosition)
+            return true
+        }
+
+        override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
+
+        }
+    }
+
+    private lateinit var recyclerView: RecyclerView
+
+    @SuppressLint("InflateParams")
+    override fun onCreate(savedInstanceState: Bundle?) {
+        initDialog()
+
+        setTitle(R.string.settings_mirror_title)
+        setView(recyclerView)
+        setButton(Dialog.BUTTON_POSITIVE, context.getString(android.R.string.ok)) { _, _ -> }
+
+        super.onCreate(savedInstanceState)
+    }
+
+    private fun initDialog() {
+        recyclerView = RecyclerView(context).apply recyclerview@{
+            addItemDecoration(DividerItemDecoration(context, DividerItemDecoration.VERTICAL))
+            layoutManager = LinearLayoutManager(context)
+            adapter = MirrorAdapter(context).apply adapter@{
+                val itemTouchHelper = ItemTouchHelper(ItemTouchHelperCallback().apply {
+                    onMoveItem = this@adapter.onItemMove
+                }).apply {
+                    attachToRecyclerView(this@recyclerview)
+                }
+
+                onStartDrag = {
+                    itemTouchHelper.startDrag(it)
+                }
+
+                onItemMoved = {
+                    PreferenceManager.getDefaultSharedPreferences(context)
+                        .edit()
+                        .putString("mirrors", it.joinToString(">"))
+                        .apply()
+                }
+            }
+        }
+    }
+
+}

app/src/main/java/xyz/quaver/pupil/ui/fragment/SettingsFragment.kt

@@ -19,10 +19,12 @@
 package xyz.quaver.pupil.ui.fragment
 
 import android.content.Intent
+import android.content.SharedPreferences
 import android.os.Bundle
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.core.content.ContextCompat
+import androidx.documentfile.provider.DocumentFile
 import androidx.preference.Preference
 import androidx.preference.PreferenceCategory
 import androidx.preference.PreferenceFragmentCompat
@@ -34,6 +36,7 @@ import xyz.quaver.pupil.ui.LockActivity
 import xyz.quaver.pupil.ui.SettingsActivity
 import xyz.quaver.pupil.ui.dialog.DefaultQueryDialog
 import xyz.quaver.pupil.ui.dialog.DownloadLocationDialog
+import xyz.quaver.pupil.ui.dialog.MirrorDialog
 import xyz.quaver.pupil.util.*
 import java.io.File
 
@@ -41,7 +44,14 @@ import java.io.File
 class SettingsFragment :
     PreferenceFragmentCompat(),
     Preference.OnPreferenceClickListener,
-    Preference.OnPreferenceChangeListener {
+    Preference.OnPreferenceChangeListener,
+    SharedPreferences.OnSharedPreferenceChangeListener {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        PreferenceManager.getDefaultSharedPreferences(context).registerOnSharedPreferenceChangeListener(this)
+    }
 
     override fun onResume() {
         super.onResume()
@@ -61,7 +71,7 @@ class SettingsFragment :
         }
     }
 
-    private fun getDirSize(dir: File) : String {
+    private fun getDirSize(dir: DocumentFile) : String {
         val size = dir.walk().map { it.length() }.sum()
 
         return getString(R.string.settings_clear_summary, byteToString(size))
@@ -76,7 +86,7 @@ class SettingsFragment :
                     checkUpdate(activity as SettingsActivity, true)
                 }
                 "delete_cache" -> {
-                    val dir = File(context.cacheDir, "imageCache")
+                    val dir = DocumentFile.fromFile(File(context.cacheDir, "imageCache"))
 
                     AlertDialog.Builder(context).apply {
                         setTitle(R.string.warning)
@@ -91,7 +101,7 @@ class SettingsFragment :
                     }.show()
                 }
                 "delete_downloads" -> {
-                    val dir = getDownloadDirectory(context)
+                    val dir = getDownloadDirectory(context)!!
 
                     AlertDialog.Builder(context).apply {
                         setTitle(R.string.warning)
@@ -100,10 +110,6 @@ class SettingsFragment :
                             if (dir.exists())
                                 dir.deleteRecursively()
 
-                            val downloads = (activity!!.application as Pupil).downloads
-
-                            downloads.clear()
-
                             summary = getDirSize(dir)
                         }
                         setNegativeButton(android.R.string.no) { _, _ -> }
@@ -123,33 +129,28 @@ class SettingsFragment :
                     }.show()
                 }
                 "dl_location" -> {
-                    DownloadLocationDialog(context).apply {
+                    DownloadLocationDialog(activity!!).show()
-                        onDownloadLocationChangedListener = { value ->
-                            PreferenceManager.getDefaultSharedPreferences(context).edit()
-                                .putInt(key, value)
-                                .apply()
-                            summary = getDownloadDirectory(context).absolutePath
-                        }
-                    }.show()
                 }
                 "default_query" -> {
                     DefaultQueryDialog(context).apply {
                         onPositiveButtonClickListener = { newTags ->
                             sharedPreferences.edit().putString("default_query", newTags.toString()).apply()
                             summary = newTags.toString()
-                            dismiss()   //This sucks
-                            // TODO: make dialog dissmiss itself :P
                         }
                     }.show()
                 }
                 "app_lock" -> {
                     val intent = Intent(context, LockActivity::class.java)
-                    activity?.startActivityForResult(intent, (activity as SettingsActivity).REQUEST_LOCK)
+                    activity?.startActivityForResult(intent, REQUEST_LOCK)
+                }
+                "mirrors" -> {
+                    MirrorDialog(context)
+                        .show()
                 }
                 "backup" -> {
                     File(ContextCompat.getDataDir(context), "favorites.json").copyTo(
-                        File(getDownloadDirectory(context), "favorites.json"),
+                        context,
-                        true
+                        getDownloadDirectory(context)?.createFile("null", "favorites.json")!!
                     )
 
                     Snackbar.make(this@SettingsFragment.listView, R.string.settings_backup_snackbar, Snackbar.LENGTH_LONG)
@@ -161,7 +162,7 @@ class SettingsFragment :
                         type = "*/*"
                     }
 
-                    activity?.startActivityForResult(intent, (activity as SettingsActivity).REQUEST_RESTORE)
+                    activity?.startActivityForResult(intent, REQUEST_RESTORE)
                 }
                 else -> return false
             }
@@ -188,6 +189,15 @@ class SettingsFragment :
         return true
     }
 
+    override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
+        when (key) {
+            "dl_location" -> {
+                findPreference<Preference>(key)?.summary =
+                    FileUtils.getPath(context, getDownloadDirectory(context!!)?.uri)
+            }
+        }
+    }
+
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         setPreferencesFromResource(R.xml.root_preferences, rootKey)
 
@@ -214,13 +224,13 @@ class SettingsFragment :
                             onPreferenceClickListener = this@SettingsFragment
                         }
                         "delete_cache" -> {
-                            val dir = File(context.cacheDir, "imageCache")
+                            val dir = DocumentFile.fromFile(File(context.cacheDir, "imageCache"))
                             summary = getDirSize(dir)
 
                             onPreferenceClickListener = this@SettingsFragment
                         }
                         "delete_downloads" -> {
-                            val dir = getDownloadDirectory(context)
+                            val dir = getDownloadDirectory(context)!!
                             summary = getDirSize(dir)
 
                             onPreferenceClickListener = this@SettingsFragment
@@ -232,7 +242,7 @@ class SettingsFragment :
                             onPreferenceClickListener = this@SettingsFragment
                         }
                         "dl_location" -> {
-                            summary = getDownloadDirectory(context).absolutePath
+                            summary = FileUtils.getPath(context, getDownloadDirectory(context)?.uri)
 
                             onPreferenceClickListener = this@SettingsFragment
                         }
@@ -259,6 +269,9 @@ class SettingsFragment :
 
                             onPreferenceClickListener = this@SettingsFragment
                         }
+                        "mirrors" -> {
+                            onPreferenceClickListener = this@SettingsFragment
+                        }
                         "dark_mode" -> {
                             onPreferenceChangeListener = this@SettingsFragment
                         }

app/src/main/java/xyz/quaver/pupil/util/ConstValues.kt

@@ -0,0 +1,24 @@
+/*
+ *     Pupil, Hitomi.la viewer for Android
+ *     Copyright (C) 2020  tom5079
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package xyz.quaver.pupil.util
+
+const val REQUEST_LOCK = 38238
+const val REQUEST_RESTORE = 16546
+const val REQUEST_DOWNLOAD_FOLDER = 3874
+const val REQUEST_DOWNLOAD_FOLDER_OLD = 3425

app/src/main/java/xyz/quaver/pupil/util/FileUtils.java

@@ -0,0 +1,178 @@
+/*
+ *     Pupil, Hitomi.la viewer for Android
+ *     Copyright (C) 2020  tom5079
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package xyz.quaver.pupil.util;
+
+/*
+ * Copyright (C) 2007-2008 OpenIntents.org
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import android.content.ContentUris;
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Build;
+import android.provider.DocumentsContract;
+import android.provider.MediaStore;
+
+/**
+ * @version 2009-07-03
+ * @author Peli
+ * @version 2013-12-11
+ * @author paulburke (ipaulpro)
+ */
+public class FileUtils {
+    /**
+     * Get a file path from a Uri. This will get the the path for Storage Access
+     * Framework Documents, as well as the _data field for the MediaStore and
+     * other file-based ContentProviders.
+     *
+     * @param context The context.
+     * @param uri The Uri to query.
+     * @author paulburke
+     */
+    public static String getPath(final Context context, final Uri uri) {
+
+        // DocumentProvider
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && DocumentsContract.isDocumentUri(context, uri)) {
+            // ExternalStorageProvider
+            if (isExternalStorageDocument(uri)) {
+                final String docId = DocumentsContract.getDocumentId(uri);
+                final String[] split = docId.split(":");
+                final String type = split[0];
+
+                if ("primary".equalsIgnoreCase(type)) {
+                    return context.getExternalFilesDir(null).getParentFile().getParentFile().getParentFile().getParent() + "/" + split[1];
+                }
+
+                // TODO handle non-primary volumes
+            }
+            // DownloadsProvider
+            else if (isDownloadsDocument(uri)) {
+
+                final String id = DocumentsContract.getDocumentId(uri);
+                final Uri contentUri = ContentUris.withAppendedId(
+                        Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
+
+                return getDataColumn(context, contentUri, null, null);
+            }
+            // MediaProvider
+            else if (isMediaDocument(uri)) {
+                final String docId = DocumentsContract.getDocumentId(uri);
+                final String[] split = docId.split(":");
+                final String type = split[0];
+
+                Uri contentUri = null;
+                if ("image".equals(type)) {
+                    contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
+                } else if ("video".equals(type)) {
+                    contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
+                } else if ("audio".equals(type)) {
+                    contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
+                }
+
+                final String selection = "_id=?";
+                final String[] selectionArgs = new String[] {
+                        split[1]
+                };
+
+                return getDataColumn(context, contentUri, selection, selectionArgs);
+            }
+        }
+        // MediaStore (and general)
+        else if ("content".equalsIgnoreCase(uri.getScheme())) {
+            return getDataColumn(context, uri, null, null);
+        }
+        // File
+        else if ("file".equalsIgnoreCase(uri.getScheme())) {
+            return uri.getPath();
+        }
+
+        return null;
+    }
+
+    /**
+     * Get the value of the data column for this Uri. This is useful for
+     * MediaStore Uris, and other file-based ContentProviders.
+     *
+     * @param context The context.
+     * @param uri The Uri to query.
+     * @param selection (Optional) Filter used in the query.
+     * @param selectionArgs (Optional) Selection arguments used in the query.
+     * @return The value of the _data column, which is typically a file path.
+     */
+    public static String getDataColumn(Context context, Uri uri, String selection,
+                                       String[] selectionArgs) {
+
+        Cursor cursor = null;
+        final String column = "_data";
+        final String[] projection = {
+                column
+        };
+
+        try {
+            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
+                    null);
+            if (cursor != null && cursor.moveToFirst()) {
+                final int column_index = cursor.getColumnIndexOrThrow(column);
+                return cursor.getString(column_index);
+            }
+        } finally {
+            if (cursor != null)
+                cursor.close();
+        }
+        return null;
+    }
+
+
+    /**
+     * @param uri The Uri to check.
+     * @return Whether the Uri authority is ExternalStorageProvider.
+     */
+    public static boolean isExternalStorageDocument(Uri uri) {
+        return "com.android.externalstorage.documents".equals(uri.getAuthority());
+    }
+
+    /**
+     * @param uri The Uri to check.
+     * @return Whether the Uri authority is DownloadsProvider.
+     */
+    public static boolean isDownloadsDocument(Uri uri) {
+        return "com.android.providers.downloads.documents".equals(uri.getAuthority());
+    }
+
+    /**
+     * @param uri The Uri to check.
+     * @return Whether the Uri authority is MediaProvider.
+     */
+    public static boolean isMediaDocument(Uri uri) {
+        return "com.android.providers.media.documents".equals(uri.getAuthority());
+    }
+}

app/src/main/java/xyz/quaver/pupil/util/GalleryDownloader.kt

@@ -1,327 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2019  tom5079
- *
- *     This program is free software: you can redistribute it and/or modify
- *     it under the terms of the GNU General Public License as published by
- *     the Free Software Foundation, either version 3 of the License, or
- *     (at your option) any later version.
- *
- *     This program is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public License
- *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package xyz.quaver.pupil.util
-
-import android.app.PendingIntent
-import android.content.Context
-import android.content.ContextWrapper
-import android.content.Intent
-import android.util.SparseArray
-import androidx.core.app.NotificationCompat
-import androidx.core.app.NotificationManagerCompat
-import androidx.core.app.TaskStackBuilder
-import androidx.preference.PreferenceManager
-import com.crashlytics.android.Crashlytics
-import kotlinx.coroutines.*
-import kotlinx.serialization.json.Json
-import kotlinx.serialization.json.JsonConfiguration
-import xyz.quaver.hitomi.Reader
-import xyz.quaver.hitomi.getReader
-import xyz.quaver.hitomi.getReferer
-import xyz.quaver.hitomi.urlFromUrlFromHash
-import xyz.quaver.hiyobi.cookie
-import xyz.quaver.hiyobi.createImgList
-import xyz.quaver.hiyobi.user_agent
-import xyz.quaver.pupil.Pupil
-import xyz.quaver.pupil.R
-import xyz.quaver.pupil.ui.ReaderActivity
-import java.io.File
-import java.io.FileOutputStream
-import java.net.URL
-import java.util.*
-import javax.net.ssl.HttpsURLConnection
-import kotlin.collections.ArrayList
-import kotlin.concurrent.schedule
-
-class GalleryDownloader(
-    base: Context,
-    private val galleryID: Int,
-    _notify: Boolean = false
-) : ContextWrapper(base) {
-
-    private val downloads = (applicationContext as Pupil).downloads
-    var useHiyobi = PreferenceManager.getDefaultSharedPreferences(this).getBoolean("use_hiyobi", false)
-
-    var download: Boolean = false
-        set(value) {
-            if (value) {
-                field = true
-                notificationManager.notify(galleryID, notificationBuilder.build())
-
-                if (reader?.isActive == false && downloadJob?.isActive != true) {
-                    val data = File(getDownloadDirectory(this), galleryID.toString())
-                    val cache = File(cacheDir, "imageCache/$galleryID")
-
-                    if (File(cache, "images").exists() && !data.exists()) {
-                        cache.copyRecursively(data, true)
-                        cache.deleteRecursively()
-                    }
-
-                    field = false
-                }
-
-                downloads.add(galleryID)
-            } else {
-                field = false
-            }
-
-            onNotifyChangedHandler?.invoke(value)
-        }
-
-    private val reader: Deferred<Reader?>?
-    private var downloadJob: Job? = null
-
-    private lateinit var notificationBuilder: NotificationCompat.Builder
-    private lateinit var notificationManager: NotificationManagerCompat
-
-    var onReaderLoadedHandler: ((Reader) -> Unit)? = null
-    var onProgressHandler: ((Int) -> Unit)? = null
-    var onDownloadedHandler: ((List<String>) -> Unit)? = null
-    var onErrorHandler: ((Exception) -> Unit)? = null
-    var onCompleteHandler: (() -> Unit)? = null
-    var onNotifyChangedHandler: ((Boolean) -> Unit)? = null
-
-    companion object : SparseArray<GalleryDownloader>()
-
-    init {
-        put(galleryID, this)
-
-        initNotification()
-
-        reader = CoroutineScope(Dispatchers.IO).async {
-            try {
-                download = _notify
-                val json = Json(JsonConfiguration.Stable)
-                val serializer = Reader.serializer()
-
-                //Check cache
-                val cache = File(getCachedGallery(this@GalleryDownloader, galleryID), "reader.json")
-
-                try {
-                    json.parse(serializer, cache.readText())
-                } catch(e: Exception) {
-                    cache.delete()
-                }
-
-                if (cache.exists()) {
-                    val cached = json.parse(serializer, cache.readText())
-
-                    if (cached.galleryInfo.isNotEmpty()) {
-                        useHiyobi = cached.code == Reader.Code.HIYOBI
-
-                        onReaderLoadedHandler?.invoke(cached)
-
-                        return@async cached
-                    }
-                }
-
-                //Cache doesn't exist. Load from internet
-                val reader = when {
-                    useHiyobi -> {
-                        try {
-                            xyz.quaver.hiyobi.getReader(galleryID)
-                        } catch(e: Exception) {
-                            useHiyobi = false
-                            getReader(galleryID)
-                        }
-                    }
-                    else -> {
-                        getReader(galleryID)
-                    }
-                }
-
-                if (reader.galleryInfo.isNotEmpty()) {
-                    //Save cache
-                    if (cache.parentFile?.exists() == false)
-                        cache.parentFile!!.mkdirs()
-
-                    cache.writeText(json.stringify(serializer, reader))
-                }
-
-                reader
-            } catch (e: Exception) {
-                Crashlytics.logException(e)
-                onErrorHandler?.invoke(e)
-                null
-            }
-        }
-    }
-
-    fun start() {
-        downloadJob = CoroutineScope(Dispatchers.Default).launch {
-            val reader = reader!!.await() ?: return@launch
-            val lowQuality = PreferenceManager.getDefaultSharedPreferences(this@GalleryDownloader)
-                .getBoolean("low_quality", false)
-
-            notificationBuilder.setContentTitle(reader.title)
-
-            val list = ArrayList<String>()
-
-            onReaderLoadedHandler?.invoke(reader)
-
-            notificationBuilder
-                .setProgress(reader.galleryInfo.size, 0, false)
-                .setContentText("0/${reader.galleryInfo.size}")
-
-            reader.galleryInfo.chunked(4).forEachIndexed { chunkIndex, chunk ->
-                chunk.mapIndexed { i, galleryInfo ->
-                    val index = chunkIndex*4+i
-
-                    async(Dispatchers.IO) {
-                        val url = when(useHiyobi) {
-                            true -> createImgList(galleryID, reader, lowQuality)[index].path
-                            false -> when {
-                                (!galleryInfo.hash.isNullOrBlank()) && (galleryInfo.haswebp == 1) && lowQuality ->
-                                    urlFromUrlFromHash(galleryID, galleryInfo, "webp")
-                                else ->
-                                    urlFromUrlFromHash(galleryID, galleryInfo)
-                            }
-                        }
-
-                        val name = "$index".padStart(4, '0')
-                        val ext = url.split('.').last()
-
-                        val cache = File(getCachedGallery(this@GalleryDownloader, galleryID), "images/$name.$ext")
-
-                        if (!cache.exists())
-                            try {
-                                with(URL(url).openConnection() as HttpsURLConnection) {
-                                    if (useHiyobi) {
-                                        setRequestProperty("User-Agent", user_agent)
-                                        setRequestProperty("Cookie", cookie)
-                                    } else
-                                        setRequestProperty("Referer", getReferer(galleryID))
-
-                                    if (cache.parentFile?.exists() == false)
-                                        cache.parentFile!!.mkdirs()
-
-                                    inputStream.copyTo(FileOutputStream(cache))
-                                }
-                            } catch (e: Exception) {
-                                cache.delete()
-
-                                onErrorHandler?.invoke(e)
-
-                                notificationBuilder
-                                    .setContentTitle(reader.title)
-                                    .setContentText(getString(R.string.reader_notification_error))
-                                    .setProgress(0, 0, false)
-
-                                notificationManager.notify(galleryID, notificationBuilder.build())
-                            }
-
-                        "images/$name.$ext"
-                    }
-                }.forEach {
-                    list.add(it.await())
-
-                    val index = list.size
-
-                    onProgressHandler?.invoke(index)
-
-                    notificationBuilder
-                        .setProgress(reader.galleryInfo.size, index, false)
-                        .setContentText("$index/${reader.galleryInfo.size}")
-
-                    if (download)
-                        notificationManager.notify(galleryID, notificationBuilder.build())
-
-                    onDownloadedHandler?.invoke(list)
-                }
-            }
-
-            Timer(false).schedule(1000) {
-                notificationBuilder
-                    .setContentTitle(reader.title)
-                    .setContentText(getString(R.string.reader_notification_complete))
-                    .setProgress(0, 0, false)
-
-                if (download) {
-                    File(cacheDir, "imageCache/${galleryID}").let {
-                        if (it.exists()) {
-                            val target = File(getDownloadDirectory(this@GalleryDownloader), galleryID.toString())
-
-                            if (!target.exists())
-                                target.mkdirs()
-
-                            it.copyRecursively(target, true)
-                            it.deleteRecursively()
-                        }
-                    }
-
-                    notificationManager.notify(galleryID, notificationBuilder.build())
-
-                    download = false
-                }
-
-                onCompleteHandler?.invoke()
-            }
-
-            remove(galleryID)
-        }
-    }
-
-    fun cancel() {
-        downloadJob?.cancel()
-
-        remove(galleryID)
-    }
-
-    suspend fun cancelAndJoin() {
-        downloadJob?.cancelAndJoin()
-
-        remove(galleryID)
-    }
-
-    fun invokeOnReaderLoaded() {
-        CoroutineScope(Dispatchers.Default).launch {
-            onReaderLoadedHandler?.invoke(reader?.await() ?: return@launch)
-        }
-    }
-
-    fun clearNotification() {
-        notificationManager.cancel(galleryID)
-    }
-
-    fun invokeOnNotifyChanged() {
-        onNotifyChangedHandler?.invoke(download)
-    }
-
-    private fun initNotification() {
-        val intent = Intent(this, ReaderActivity::class.java).apply {
-            putExtra("galleryID", galleryID)
-        }
-        val pendingIntent = TaskStackBuilder.create(this).run {
-            addNextIntentWithParentStack(intent)
-            getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT)
-        }
-
-        notificationManager = NotificationManagerCompat.from(this)
-
-        notificationBuilder = NotificationCompat.Builder(this, "download").apply {
-            setContentTitle(getString(R.string.reader_loading))
-            setContentText(getString(R.string.reader_notification_text))
-            setSmallIcon(android.R.drawable.stat_sys_download)
-            setContentIntent(pendingIntent)
-            setProgress(0, 0, true)
-            priority = NotificationCompat.PRIORITY_LOW
-        }
-    }
-
-}

app/src/main/java/xyz/quaver/pupil/util/download/Cache.kt

@@ -0,0 +1,220 @@
+/*
+ *     Pupil, Hitomi.la viewer for Android
+ *     Copyright (C) 2020  tom5079
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package xyz.quaver.pupil.util.download
+
+import android.content.Context
+import android.content.ContextWrapper
+import android.util.Base64
+import androidx.documentfile.provider.DocumentFile
+import androidx.preference.PreferenceManager
+import kotlinx.coroutines.*
+import kotlinx.serialization.ImplicitReflectionSerializer
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.parse
+import kotlinx.serialization.stringify
+import xyz.quaver.hitomi.GalleryBlock
+import xyz.quaver.hitomi.Reader
+import xyz.quaver.pupil.util.*
+import java.io.File
+import java.net.URL
+
+class Cache(context: Context) : ContextWrapper(context) {
+
+    private val preference = PreferenceManager.getDefaultSharedPreferences(this)
+
+    // Search in this order
+    // Download -> Cache
+    fun getCachedGallery(galleryID: Int) : DocumentFile? {
+        var file = getDownloadDirectory(this)?.findFile(galleryID.toString())
+
+        if (file?.exists() == true)
+            return file
+
+        file = DocumentFile.fromFile(File(cacheDir, "imageCache/$galleryID"))
+
+        return if (file.exists())
+             file
+        else
+             null
+    }
+
+    @UseExperimental(ImplicitReflectionSerializer::class)
+    fun getCachedMetadata(galleryID: Int) : Metadata? {
+        val file = (getCachedGallery(galleryID) ?: return null).findFile(".metadata")
+
+        if (file?.exists() != true)
+            return null
+
+        return try {
+            Json.parse(file.readText(this))
+        } catch (e: Exception) {
+            //File corrupted
+            file.delete()
+            null
+        }
+    }
+
+    @UseExperimental(ImplicitReflectionSerializer::class)
+    fun setCachedMetadata(galleryID: Int, metadata: Metadata) {
+        val file = getCachedGallery(galleryID)?.findFile(".metadata") ?:
+        DocumentFile.fromFile(File(cacheDir, "imageCache/$galleryID").also {
+            if (!it.exists())
+                it.mkdirs()
+        }).createFile("null", ".metadata") ?: return
+
+        file.writeText(this, Json.stringify(metadata))
+    }
+
+    suspend fun getThumbnail(galleryID: Int): String? {
+        val metadata = Cache(this).getCachedMetadata(galleryID)
+
+        val thumbnail = if (metadata?.thumbnail == null)
+            withContext(Dispatchers.IO) {
+                val thumbnails = getGalleryBlock(galleryID)?.thumbnails
+                try {
+                    Base64.encodeToString(URL(thumbnails?.firstOrNull()).readBytes(), Base64.DEFAULT)
+                } catch (e: Exception) {
+                    null
+                }
+            }
+        else
+            metadata.thumbnail
+
+        setCachedMetadata(
+            galleryID,
+            Metadata(Cache(this).getCachedMetadata(galleryID), thumbnail = thumbnail)
+        )
+
+        return thumbnail
+    }
+
+    suspend fun getGalleryBlock(galleryID: Int): GalleryBlock? {
+        val metadata = Cache(this).getCachedMetadata(galleryID)
+
+        val galleryBlock = if (metadata?.galleryBlock == null)
+           listOf(
+               { xyz.quaver.hitomi.getGalleryBlock(galleryID) },
+               { xyz.quaver.hiyobi.getGalleryBlock(galleryID) }
+           ).map {
+               CoroutineScope(Dispatchers.IO).async {
+                   kotlin.runCatching {
+                       it.invoke()
+                   }.getOrNull()
+               }
+           }.awaitAll().filterNotNull()
+        else
+            metadata.galleryBlock
+
+        setCachedMetadata(
+            galleryID,
+            Metadata(Cache(this).getCachedMetadata(galleryID), galleryBlock = galleryBlock)
+        )
+
+        val mirrors = preference.getString("mirrors", "")!!.split('>')
+
+        return galleryBlock.firstOrNull {
+            mirrors.contains(it.code.name)
+        } ?: galleryBlock.firstOrNull()
+    }
+
+    fun getReaderOrNull(galleryID: Int): Reader? {
+        val metadata = getCachedMetadata(galleryID)
+
+        val mirrors = preference.getString("mirrors", "")!!.split('>')
+
+        return metadata?.readers?.firstOrNull {
+            mirrors.contains(it.code.name)
+        } ?: metadata?.readers?.firstOrNull()
+    }
+
+    suspend fun getReader(galleryID: Int): Reader? {
+        val metadata = getCachedMetadata(galleryID)
+
+        val readers = if (metadata?.readers == null) {
+             listOf(
+                { xyz.quaver.hitomi.getReader(galleryID) },
+                { xyz.quaver.hiyobi.getReader(galleryID) }
+            ).map {
+                CoroutineScope(Dispatchers.IO).async {
+                    kotlin.runCatching {
+                        it.invoke()
+                    }.getOrNull()
+                }
+            }.awaitAll().filterNotNull()
+        } else {
+            metadata.readers
+        }
+
+        if (readers.isNotEmpty())
+            setCachedMetadata(
+                galleryID,
+                Metadata(Cache(this).getCachedMetadata(galleryID), readers = readers)
+            )
+
+        val mirrors = preference.getString("mirrors", "")!!.split('>')
+
+        return readers.firstOrNull {
+            mirrors.contains(it.code.name)
+        } ?: readers.firstOrNull()
+    }
+
+    fun getImages(galleryID: Int): List<DocumentFile?>? {
+        val gallery = getCachedGallery(galleryID) ?: return null
+        val reader = getReaderOrNull(galleryID) ?: return null
+        val images = gallery.listFiles()
+
+        return reader.galleryInfo.indices.map { index ->
+            images.firstOrNull { file -> file.name?.startsWith(index.toString()) == true }
+        }
+    }
+
+    fun putImage(galleryID: Int, name: String, data: ByteArray) {
+        val cache = getCachedGallery(galleryID) ?:
+        DocumentFile.fromFile(File(cacheDir, "imageCache/$galleryID").also {
+            if (!it.exists())
+                it.mkdirs()
+        }) ?: return
+
+        if (!Regex("""^[0-9]+.+$""").matches(name))
+            throw IllegalArgumentException("File name is not a number")
+
+        cache.createFile("null", name)?.writeBytes(this, data)
+    }
+
+    fun moveToDownload(galleryID: Int) {
+        val cache = getCachedGallery(galleryID)
+
+        if (cache != null) {
+            val download = getDownloadDirectory(this)!!
+
+            if (!download.isParentOf(cache)) {
+                cache.copyRecursively(this, download)
+                cache.deleteRecursively()
+            }
+        } else
+            getDownloadDirectory(this)?.createDirectory(galleryID.toString())
+    }
+
+    fun isDownloading(galleryID: Int) = getCachedMetadata(galleryID)?.isDownloading == true
+
+    fun setDownloading(galleryID: Int, isDownloading: Boolean) {
+        setCachedMetadata(galleryID, Metadata(getCachedMetadata(galleryID), isDownloading = isDownloading))
+    }
+
+}

app/src/main/java/xyz/quaver/pupil/util/download/DownloadWorker.kt

@@ -0,0 +1,388 @@
+/*
+ *     Pupil, Hitomi.la viewer for Android
+ *     Copyright (C) 2020  tom5079
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package xyz.quaver.pupil.util.download
+
+import android.app.PendingIntent
+import android.content.Context
+import android.content.ContextWrapper
+import android.content.Intent
+import android.content.SharedPreferences
+import android.util.SparseArray
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
+import androidx.core.app.TaskStackBuilder
+import androidx.preference.PreferenceManager
+import com.crashlytics.android.Crashlytics
+import io.fabric.sdk.android.Fabric
+import kotlinx.coroutines.*
+import okhttp3.*
+import okio.*
+import xyz.quaver.Code
+import xyz.quaver.hitomi.Reader
+import xyz.quaver.hitomi.getReferer
+import xyz.quaver.hitomi.urlFromUrlFromHash
+import xyz.quaver.hiyobi.cookie
+import xyz.quaver.hiyobi.createImgList
+import xyz.quaver.hiyobi.user_agent
+import xyz.quaver.pupil.R
+import xyz.quaver.pupil.ui.ReaderActivity
+import java.io.IOException
+import java.util.concurrent.Executors
+import java.util.concurrent.LinkedBlockingQueue
+
+@UseExperimental(ExperimentalCoroutinesApi::class)
+class DownloadWorker private constructor(context: Context) : ContextWrapper(context) {
+
+    private val preferences : SharedPreferences = PreferenceManager.getDefaultSharedPreferences(this)
+
+    //region ProgressListener
+    @Suppress("UNCHECKED_CAST")
+    private val progressListener = object: ProgressListener {
+        override fun update(tag: Any?, bytesRead: Long, contentLength: Long, done: Boolean) {
+            val (galleryID, index) = (tag as? Pair<Int, Int>) ?: return
+
+            if (!done && progress[galleryID]?.get(index)?.isFinite() == true)
+                progress[galleryID]?.set(index, bytesRead * 100F / contentLength)
+        }
+    }
+
+    interface ProgressListener {
+        fun update(tag: Any?, bytesRead : Long, contentLength: Long, done: Boolean)
+    }
+
+    class ProgressResponseBody(
+        val tag: Any?,
+        val responseBody: ResponseBody,
+        val progressListener : ProgressListener
+    ) : ResponseBody() {
+        private var bufferedSource : BufferedSource? = null
+
+        override fun contentLength() = responseBody.contentLength()
+        override fun contentType() = responseBody.contentType() ?: null
+
+        override fun source(): BufferedSource {
+            if (bufferedSource == null)
+                bufferedSource = Okio.buffer(source(responseBody.source()))
+
+            return bufferedSource!!
+        }
+
+        private fun source(source: Source) = object: ForwardingSource(source) {
+
+            var totalBytesRead = 0L
+
+            override fun read(sink: Buffer, byteCount: Long): Long {
+                val bytesRead = super.read(sink, byteCount)
+
+                totalBytesRead += if (bytesRead == -1L) 0L else bytesRead
+                progressListener.update(tag, totalBytesRead, responseBody.contentLength(), bytesRead == -1L)
+
+                return bytesRead
+            }
+
+        }
+    }
+    //endregion
+
+    //region Singleton
+    companion object {
+
+        @Volatile private var instance: DownloadWorker? = null
+
+        fun getInstance(context: Context) =
+            instance ?: synchronized(this) {
+                instance ?: DownloadWorker(context).also { instance = it }
+            }
+    }
+    //endregion
+
+    val notificationManager = NotificationManagerCompat.from(context)
+
+    val queue = LinkedBlockingQueue<Int>()
+
+    /*
+    * KEY
+    *  primary galleryID
+    *  secondary index
+    * PRIMARY VALUE
+    *  MutableList -> Download in progress
+    *  null -> Loading / Gallery doesn't exist
+    * SECONDARY VALUE
+    *  0 <= value < 100 -> Download in progress
+    *  Float.POSITIVE_INFINITY -> Download completed
+    *  Float.NaN -> Exception
+    */
+    val progress = SparseArray<MutableList<Float>?>()
+    /*
+    * KEY
+    *  primary galleryID
+    *  secondary index
+    * PRIMARY VALUE
+    *  MutableList -> Download in progress / Loading
+    *  null -> Gallery doesn't exist
+    * SECONDARY VALUE
+    *  Throwable -> Exception
+    *  null -> Download in progress / Loading
+    */
+    val exception = SparseArray<MutableList<Throwable?>?>()
+    val notification = SparseArray<NotificationCompat.Builder>()
+
+    private val loop = loop()
+    private val worker = SparseArray<Job?>()
+    @Volatile var nRunners = 0
+
+    private val client = OkHttpClient.Builder()
+        .addInterceptor { chain ->
+            val request = chain.request()
+            var response = chain.proceed(request)
+
+            var retry = preferences.getInt("retry", 3)
+            while (!response.isSuccessful && retry > 0) {
+                response = chain.proceed(request)
+                retry--
+            }
+
+            response.newBuilder()
+                .body(ProgressResponseBody(request.tag(), response.body(), progressListener))
+                .build()
+        }
+        .dispatcher(Dispatcher(Executors.newSingleThreadExecutor()))
+        .build()
+
+    fun stop() {
+        queue.clear()
+
+        loop.cancel()
+        for (i in 0..worker.size()) {
+            val galleryID = worker.keyAt(i)
+
+            Cache(this@DownloadWorker).setDownloading(galleryID, false)
+            worker[galleryID]?.cancel()
+        }
+
+        client.dispatcher().cancelAll()
+
+        progress.clear()
+        exception.clear()
+        notification.clear()
+        notificationManager.cancelAll()
+
+        nRunners = 0
+
+    }
+
+    fun cancel(galleryID: Int) {
+        queue.remove(galleryID)
+        worker[galleryID]?.cancel()
+
+        client.dispatcher().queuedCalls()
+            .filter {
+                @Suppress("UNCHECKED_CAST")
+                (it.request().tag() as? Pair<Int, Int>)?.first == galleryID
+            }
+            .forEach {
+                it.cancel()
+            }
+
+        progress.remove(galleryID)
+        exception.remove(galleryID)
+        notification.remove(galleryID)
+        notificationManager.cancel(galleryID)
+
+        if (progress.indexOfKey(galleryID) >= 0) {
+            Cache(this@DownloadWorker).setDownloading(galleryID, false)
+            nRunners--
+        }
+    }
+
+    fun isCompleted(galleryID: Int) = progress[galleryID]?.all { !it.isFinite() } == true
+
+    private fun queueDownload(galleryID: Int, reader: Reader, index: Int, callback: Callback) {
+        val cache = Cache(this@DownloadWorker).getImages(galleryID)
+        val lowQuality = preferences.getBoolean("low_quality", false)
+
+        //Cache exists :P
+        cache?.get(index)?.let {
+            progress[galleryID]?.set(index, Float.POSITIVE_INFINITY)
+
+            notify(galleryID)
+
+            if (isCompleted(galleryID)) {
+                with(Cache(this@DownloadWorker)) {
+                    if (isDownloading(galleryID)) {
+                        moveToDownload(galleryID)
+                        setDownloading(galleryID, false)
+                    }
+                }
+                nRunners--
+            }
+
+            return
+        }
+
+        val request = Request.Builder().apply {
+            when (reader.code) {
+                Code.HITOMI -> {
+                    url(
+                        urlFromUrlFromHash(
+                            galleryID,
+                            reader.galleryInfo[index],
+                            if (lowQuality) "webp" else null
+                        )
+                    )
+                    addHeader("Referer", getReferer(galleryID))
+                }
+                Code.HIYOBI -> {
+                    url(createImgList(galleryID, reader, lowQuality)[index].path)
+                    addHeader("User-Agent", user_agent)
+                    addHeader("Cookie", cookie)
+                }
+                else -> {
+                    //shouldn't be called anyway
+                }
+            }
+            tag(galleryID to index)
+        }.build()
+
+        client.newCall(request).enqueue(callback)
+    }
+
+    private fun download(galleryID: Int) = CoroutineScope(Dispatchers.IO).launch {
+        val reader = Cache(this@DownloadWorker).getReader(galleryID)
+
+        //gallery doesn't exist
+        if (reader == null) {
+            progress.put(galleryID, null)
+            exception.put(galleryID, null)
+
+            Cache(this@DownloadWorker).setDownloading(galleryID, false)
+            nRunners--
+            return@launch
+        }
+
+        progress.put(galleryID, reader.galleryInfo.map { 0F }.toMutableList())
+        exception.put(galleryID, reader.galleryInfo.map { null }.toMutableList())
+
+        notification[galleryID].setContentTitle(reader.title)
+        notify(galleryID)
+
+        for (i in reader.galleryInfo.indices) {
+            val callback = object : Callback {
+                override fun onFailure(call: Call, e: IOException) {
+                    if (Fabric.isInitialized())
+                        Crashlytics.logException(e)
+
+                    progress[galleryID]?.set(i, Float.NaN)
+                    exception[galleryID]?.set(i, e)
+
+                    notify(galleryID)
+
+                    if (isCompleted(galleryID)) {
+                        val cache = Cache(this@DownloadWorker)
+                        if (cache.isDownloading(galleryID)) {
+                            cache.moveToDownload(galleryID)
+                            cache.setDownloading(galleryID, false)
+                        }
+                        nRunners--
+                    }
+                }
+
+                override fun onResponse(call: Call, response: Response) {
+                    response.body().use {
+                        val res = it.bytes()
+                        val ext =
+                            call.request().url().encodedPath().split('.').last()
+
+                        Cache(this@DownloadWorker).putImage(galleryID, "$i.$ext", res)
+                        progress[galleryID]?.set(i, Float.POSITIVE_INFINITY)
+                    }
+
+                    notify(galleryID)
+
+                    if (isCompleted(galleryID)) {
+                        val cache = Cache(this@DownloadWorker)
+                        if (cache.isDownloading(galleryID)) {
+                            cache.moveToDownload(galleryID)
+                            cache.setDownloading(galleryID, false)
+                        }
+                        nRunners--
+                    }
+                }
+            }
+
+            queueDownload(galleryID, reader, i, callback)
+        }
+    }
+
+    private fun notify(galleryID: Int) {
+        val max = progress[galleryID]?.size ?: 0
+        val progress = progress[galleryID]?.count { !it.isFinite() } ?: 0
+
+        if (isCompleted(galleryID))
+            notification[galleryID]
+                ?.setContentText(getString(R.string.reader_notification_complete))
+                ?.setProgress(0, 0, false)
+        else
+            notification[galleryID]
+                ?.setProgress(max, progress, false)
+                ?.setContentText("$progress/$max")
+
+        if (Cache(this).isDownloading(galleryID) && notification[galleryID] != null)
+            notificationManager.notify(galleryID, notification[galleryID].build())
+        else
+            notificationManager.cancel(galleryID)
+    }
+
+    private fun initNotification(galleryID: Int) {
+        val intent = Intent(this, ReaderActivity::class.java).apply {
+            putExtra("galleryID", galleryID)
+        }
+        val pendingIntent = TaskStackBuilder.create(this).run {
+            addNextIntentWithParentStack(intent)
+            getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT)
+        }
+
+        notification.put(galleryID, NotificationCompat.Builder(this, "download").apply {
+            setContentTitle(getString(R.string.reader_loading))
+            setContentText(getString(R.string.reader_notification_text))
+            setSmallIcon(android.R.drawable.stat_sys_download)                                  // had to use this because old android doesn't support VectorDrawable on Notification :P
+            setContentIntent(pendingIntent)
+            setProgress(0, 0, true)
+        })
+    }
+
+    private fun loop() = CoroutineScope(Dispatchers.Default).launch {
+        while (true) {
+            if (queue.isEmpty() || nRunners > preferences.getInt("max_download", 4))
+                continue
+
+            val galleryID = queue.poll() ?: continue
+
+            if (progress.indexOfKey(galleryID) >= 0)    // Gallery already downloading!
+                continue
+
+            initNotification(galleryID)
+            if (Cache(this@DownloadWorker).isDownloading(galleryID))
+                notificationManager.notify(galleryID, notification[galleryID].build())
+            worker.put(galleryID, download(galleryID))
+            nRunners++
+        }
+    }
+
+}

app/src/main/java/xyz/quaver/pupil/util/download/Metadata.kt

@@ -0,0 +1,44 @@
+/*
+ *     Pupil, Hitomi.la viewer for Android
+ *     Copyright (C) 2020  tom5079
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package xyz.quaver.pupil.util.download
+
+import kotlinx.serialization.Serializable
+import xyz.quaver.hitomi.GalleryBlock
+import xyz.quaver.hitomi.Reader
+
+@Serializable
+data class Metadata(
+    val thumbnail: String? = null,
+    val galleryBlock: List<GalleryBlock>? = null,
+    val readers: List<Reader>? = null,
+    val isDownloading: Boolean? = null
+) {
+    constructor(
+        metadata: Metadata?,
+        thumbnail: String? = null,
+        galleryBlock: List<GalleryBlock>? = null,
+        readers: List<Reader>? = null,
+        isDownloading: Boolean? = null
+    ) : this(
+        thumbnail ?: metadata?.thumbnail,
+        galleryBlock ?: metadata?.galleryBlock,
+        readers ?: metadata?.readers,
+        isDownloading ?: metadata?.isDownloading
+    )
+}

app/src/main/java/xyz/quaver/pupil/util/file.kt

@@ -19,28 +19,32 @@
 package xyz.quaver.pupil.util
 
 import android.content.Context
-import androidx.core.content.ContextCompat
+import android.net.Uri
+import androidx.documentfile.provider.DocumentFile
 import androidx.preference.PreferenceManager
 import java.io.File
 import java.net.URL
+import java.nio.charset.Charset
+import java.util.*
 
-fun getCachedGallery(context: Context, galleryID: Int): File {
+fun getCachedGallery(context: Context, galleryID: Int) =
-    return File(getDownloadDirectory(context), galleryID.toString()).let {
+    getDownloadDirectory(context)?.findFile(galleryID.toString()) ?:
-        when {
+    DocumentFile.fromFile(File(context.cacheDir, "imageCache/$galleryID"))
-            it.exists() -> it
+
-            else -> File(context.cacheDir, "imageCache/$galleryID")
+fun getDownloadDirectory(context: Context) : DocumentFile? {
-        }
+    val uri = PreferenceManager.getDefaultSharedPreferences(context).getString("dl_location", null).let {
+        Uri.parse(it)
     }
+
+    return if (uri.toString().startsWith("file"))
+        DocumentFile.fromFile(File(uri.path!!))
+    else
+        DocumentFile.fromTreeUri(context, uri)
 }
 
-fun getDownloadDirectory(context: Context): File {
+fun URL.download(context: Context, to: DocumentFile, onDownloadProgress: ((Long, Long) -> Unit)? = null) {
-    val dlLocation = PreferenceManager.getDefaultSharedPreferences(context).getInt("dl_location", 0)
+    context.contentResolver.openOutputStream(to.uri).use { out ->
-
+        out!!
-    return ContextCompat.getExternalFilesDirs(context, null)[dlLocation]
-}
-
-fun URL.download(to: File, onDownloadProgress: ((Long, Long) -> Unit)? = null) {
-    to.outputStream().use { out ->
 
         with(openConnection()) {
             val fileSize = contentLength.toLong()
@@ -49,6 +53,7 @@ fun URL.download(to: File, onDownloadProgress: ((Long, Long) -> Unit)? = null) {
 
                 var bytesCopied: Long = 0
                 val buffer = ByteArray(DEFAULT_BUFFER_SIZE)
+
                 var bytes = it.read(buffer)
                 while (bytes >= 0) {
                     out.write(buffer, 0, bytes)
@@ -61,4 +66,71 @@ fun URL.download(to: File, onDownloadProgress: ((Long, Long) -> Unit)? = null) {
         }
 
     }
-}
+}
+
+fun DocumentFile.isParentOf(file: DocumentFile?) : Boolean {
+    var parent = file?.parentFile
+    while (parent != null) {
+        if (this.uri.path == parent.uri.path)
+            return true
+
+        parent = parent.parentFile
+    }
+
+    return false
+}
+
+fun DocumentFile.reader(context: Context, charset: Charset = Charsets.UTF_8) = context.contentResolver.openInputStream(uri)!!.reader(charset)
+fun DocumentFile.readBytes(context: Context) = context.contentResolver.openInputStream(uri)!!.readBytes()
+fun DocumentFile.readText(context: Context, charset: Charset = Charsets.UTF_8) = reader(context, charset).use { it.readText() }
+
+fun DocumentFile.writeBytes(context: Context, array: ByteArray) = context.contentResolver.openOutputStream(uri)!!.write(array)
+fun DocumentFile.writeText(context: Context, text: String, charset: Charset = Charsets.UTF_8) = writeBytes(context, text.toByteArray(charset))
+
+fun DocumentFile.copyRecursively(
+    context: Context,
+    target: DocumentFile
+) {
+    if (!exists())
+        throw Exception("The source file doesn't exist.")
+
+    if (this.isFile)
+        target.createFile("null", name!!)!!.writeBytes(
+            context,
+            readBytes(context)
+        )
+    else if (this.isDirectory) {
+        target.createDirectory(name!!).also { newTarget ->
+            listFiles().forEach { child ->
+                child.copyRecursively(context, newTarget!!)
+            }
+        }
+    }
+}
+
+fun DocumentFile.deleteRecursively() {
+
+    if (this.isDirectory)
+        listFiles().forEach {
+            it.deleteRecursively()
+        }
+
+    this.delete()
+}
+
+fun DocumentFile.walk(state: LinkedList<DocumentFile> = LinkedList()) : Queue<DocumentFile> {
+    if (state.isEmpty())
+        state.push(this)
+
+    listFiles().forEach {
+        state.push(it)
+
+        if (it.isDirectory) {
+            it.walk(state)
+        }
+    }
+
+    return state
+}
+
+fun File.copyTo(context: Context, target: DocumentFile) = target.writeBytes(context, this.readBytes())

app/src/main/java/xyz/quaver/pupil/util/update.kt

@@ -21,27 +21,20 @@ package xyz.quaver.pupil.util
 import android.app.PendingIntent
 import android.content.Context
 import android.content.Intent
-import android.net.Uri
 import android.webkit.MimeTypeMap
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationManagerCompat
-import androidx.core.content.FileProvider
 import androidx.lifecycle.Lifecycle
 import androidx.preference.PreferenceManager
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
-import kotlinx.serialization.InternalSerializationApi
-import kotlinx.serialization.internal.EnumSerializer
 import kotlinx.serialization.json.*
 import ru.noties.markwon.Markwon
-import xyz.quaver.availableInHiyobi
-import xyz.quaver.hitomi.Reader
 import xyz.quaver.pupil.BuildConfig
 import xyz.quaver.pupil.R
-import java.io.File
 import java.net.URL
 import java.util.*
 
@@ -153,10 +146,10 @@ fun checkUpdate(context: AppCompatActivity, force: Boolean = false) {
                 }
 
                 CoroutineScope(Dispatchers.IO).launch io@{
-                    val target = File(getDownloadDirectory(context), "Pupil.apk")
+                    val target = getDownloadDirectory(context)?.createFile("null", "Pupil.apk")!!
 
                     try {
-                        URL(url).download(target) { progress, fileSize ->
+                        URL(url).download(context, target) { progress, fileSize ->
                             builder.setProgress(fileSize.toInt(), progress.toInt(), false)
                             notificationManager.notify(UPDATE_NOTIFICATION_ID, builder.build())
                         }
@@ -175,15 +168,7 @@ fun checkUpdate(context: AppCompatActivity, force: Boolean = false) {
 
                     val install = Intent(Intent.ACTION_VIEW).apply {
                         flags = Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_GRANT_READ_URI_PERMISSION
-                        setDataAndType(FileProvider.getUriForFile(
+                        setDataAndType(target.uri, MimeTypeMap.getSingleton().getMimeTypeFromExtension("apk"))
-                            context,
-                            context.applicationContext.packageName + ".fileprovider",
-                            target
-                        ), MimeTypeMap.getSingleton().getMimeTypeFromExtension("apk"))
-
-                        if (resolveActivity(context.packageManager) == null)
-                            setDataAndType(Uri.fromFile(target),
-                                MimeTypeMap.getSingleton().getMimeTypeFromExtension("apk"))
                     }
 
                     builder.apply {
@@ -214,59 +199,4 @@ fun checkUpdate(context: AppCompatActivity, force: Boolean = false) {
             dialog.show()
         }
     }
-}
-
-fun getOldReaderGalleries(context: Context) : List<File> {
-    val oldGallery = mutableListOf<File>()
-
-    listOf(
-        getDownloadDirectory(context),
-        File(context.cacheDir, "imageCache")
-    ).forEach { root ->
-        root.listFiles()?.forEach { gallery ->
-            File(gallery, "reader.json").let { readerFile ->
-                if (!readerFile.exists())
-                    return@let
-
-                try {
-                    Json(JsonConfiguration.Stable).parseJson(readerFile.readText())
-                        .jsonObject.let { reader ->
-                        if (!reader.contains("code"))
-                            oldGallery.add(gallery)
-                    }
-                } catch (e: Exception) {
-                    // do nothing
-                }
-            }
-        }
-    }
-
-    return oldGallery
-}
-
-@UseExperimental(InternalSerializationApi::class)
-fun updateOldReaderGalleries(context: Context) {
-
-    val json = Json(JsonConfiguration.Stable)
-
-   getOldReaderGalleries(context).forEach { gallery ->
-       val reader = json.parseJson(File(gallery, "reader.json").apply {
-           if (!exists())
-               return@forEach
-       }.readText())
-           .jsonObject.toMutableMap()
-
-       val codeSerializer = EnumSerializer(Reader.Code::class)
-
-       reader["code"] = when {
-           (File(gallery, "images").list()?.
-               all { !it.endsWith("webp") } ?: return@forEach) &&
-                   availableInHiyobi(gallery.name.toIntOrNull() ?: return@forEach)
-                -> json.toJson(codeSerializer, Reader.Code.HIYOBI)
-           else -> json.toJson(codeSerializer, Reader.Code.HITOMI)
-       }
-
-       File(gallery, "reader.json").writeText(JsonObject(reader).toString())
-   }
-
 }

app/src/main/res/drawable/ic_download.xml

@@ -1,4 +1,4 @@
-<vector android:height="24dp" android:tint="#fff"
+<vector android:height="24dp"
     android:viewportHeight="24.0" android:viewportWidth="24.0"
     android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
     <path android:fillColor="#fff" android:pathData="M19,9h-4V3H9v6H5l7,7 7,-7zM5,18v2h14v-2H5z"/>

app/src/main/res/drawable/menu.xml

@@ -0,0 +1,8 @@
+<!-- drawable/menu.xml -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:width="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path android:fillColor="#fff" android:pathData="M3,6H21V8H3V6M3,11H21V13H3V11M3,16H21V18H3V16Z" />
+</vector>

app/src/main/res/drawable/reader_item_boundary.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~     Pupil, Hitomi.la viewer for Android
+  ~     Copyright (C) 2020  tom5079
+  ~
+  ~     This program is free software: you can redistribute it and/or modify
+  ~     it under the terms of the GNU General Public License as published by
+  ~     the Free Software Foundation, either version 3 of the License, or
+  ~     (at your option) any later version.
+  ~
+  ~     This program is distributed in the hope that it will be useful,
+  ~     but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~     GNU General Public License for more details.
+  ~
+  ~     You should have received a copy of the GNU General Public License
+  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+  -->
+
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item
+        android:bottom="1dp"
+        android:left="1dp"
+        android:right="1dp"
+        android:top="1dp">
+        <shape android:shape="rectangle" >
+            <stroke
+                android:width="1dp"
+                android:color="#555555" />
+
+            <solid android:color="@color/transparent" />
+        </shape>
+    </item>
+</layer-list>

app/src/main/res/layout/dialog_default_query.xml

@@ -18,21 +18,12 @@
   -->
 
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="wrap_content"
+    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
+    android:layout_height="match_parent"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:padding="16dp">
 
-    <TextView
-        android:id="@+id/default_query_dialog_title"
-        style="@style/TextAppearance.AppCompat.Large"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="@string/default_query_dialog_title"
-        app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintStart_toStartOf="parent"/>
-
     <EditText
         tools:ignore="Autofill"
         android:inputType="text"
@@ -40,7 +31,7 @@
         android:id="@+id/default_query_dialog_edittext"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
-        app:layout_constraintTop_toBottomOf="@id/default_query_dialog_title"
+        app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent"/>
 
@@ -116,14 +107,4 @@
 
     </LinearLayout>
 
-    <Button
-        android:id="@+id/default_query_dialog_ok"
-        style="?borderlessButtonStyle"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        app:layout_constraintTop_toBottomOf="@id/default_query_dialog_guro_layout"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        android:text="@android:string/ok"/>
-
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/item_gallery_details.xml

@@ -35,6 +35,6 @@
         android:id="@+id/gallery_details_tags"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        app:chipSpacingVertical="8dp"/>
+        app:chipSpacingVertical="4dp"/>
 
 </LinearLayout>

app/src/main/res/layout/item_galleryblock.xml

@@ -177,7 +177,7 @@
 					android:layout_marginStart="8dp"
 					android:layout_marginTop="16dp"
 					android:layout_marginBottom="16dp"
-					app:chipSpacing="2dp"
+					app:chipSpacing="4dp"
 					app:layout_constraintTop_toBottomOf="@id/galleryblock_padding"
 					app:layout_constraintLeft_toRightOf="@id/galleryblock_thumbnail"
 					app:layout_constraintRight_toRightOf="parent"

app/src/main/res/layout/item_mirrors.xml

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~     Pupil, Hitomi.la viewer for Android
+  ~     Copyright (C) 2020  tom5079
+  ~
+  ~     This program is free software: you can redistribute it and/or modify
+  ~     it under the terms of the GNU General Public License as published by
+  ~     the Free Software Foundation, either version 3 of the License, or
+  ~     (at your option) any later version.
+  ~
+  ~     This program is distributed in the hope that it will be useful,
+  ~     but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~     GNU General Public License for more details.
+  ~
+  ~     You should have received a copy of the GNU General Public License
+  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+  -->
+
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:paddingStart="32dp"
+    android:paddingLeft="32dp"
+    android:paddingEnd="32dp"
+    android:paddingRight="32dp"
+    android:paddingTop="16dp">
+
+    <TextView
+        android:id="@+id/mirror_name"
+        style="@style/TextAppearance.MaterialComponents.Headline6"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"/>
+
+    <ImageView
+        android:id="@+id/mirror_button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:srcCompat="@drawable/menu"
+        app:tint="?attr/colorControlNormal"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/item_next.xml

@@ -36,7 +36,7 @@
         android:layout_height="match_parent"
         android:layout_weight="1"
         app:srcCompat="@drawable/ic_navigate_next_black_24dp"
-        android:tint="@color/colorAccent"
+        app:tint="@color/colorAccent"
         android:rotation="180"/>
 
     <TextView

app/src/main/res/layout/item_prev.xml

@@ -36,7 +36,7 @@
         android:layout_height="match_parent"
         android:layout_weight="1"
         app:srcCompat="@drawable/ic_navigate_next_black_24dp"
-        android:tint="@color/colorAccent"
+        app:tint="@color/colorAccent"
         android:rotation="180"/>
 
     <TextView

app/src/main/res/layout/item_reader.xml

@@ -17,9 +17,55 @@
   ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
   -->
 
-<com.github.chrisbanes.photoview.PhotoView xmlns:android="http://schemas.android.com/apk/res/android"
+
-    android:contentDescription="@string/reader_imageview_description"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:minHeight="100dp"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
-    android:paddingBottom="8dp"/>
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/container"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        android:background="@drawable/reader_item_boundary">
+
+        <LinearLayout
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            android:gravity="center_horizontal"
+            android:orientation="vertical">
+
+            <ProgressBar
+                android:id="@+id/reader_item_progressbar"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                style="?android:progressBarStyleHorizontal"
+                android:indeterminate="false"
+                android:progress="0"
+                android:max="100"
+                android:visibility="visible"/>
+
+            <TextView
+                android:id="@+id/reader_index"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                style="@style/TextAppearance.AppCompat.Caption"/>
+
+        </LinearLayout>
+
+        <com.github.chrisbanes.photoview.PhotoView
+            android:id="@+id/image"
+            android:contentDescription="@string/reader_imageview_description"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:paddingBottom="8dp"/>
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/menu/reader.xml

@@ -25,11 +25,9 @@
         android:icon="@drawable/avd_star"
         app:showAsAction="always"/>
 
-    <item android:id="@+id/reader_menu_use_hiyobi"
+    <item android:id="@+id/reader_type"
         android:title=""
-        android:icon="@drawable/ic_hiyobi"
+        app:showAsAction="ifRoom"/>
-        app:showAsAction="ifRoom"
-        android:visible="false"/>
 
     <item android:id="@+id/reader_menu_page_indicator"
         android:title="@string/page_indicator_placeholder"

app/src/main/res/values-ja/strings.xml

@@ -18,7 +18,7 @@
     <string name="update_title">新しいアップデートがあります</string>
     <string name="warning">注意</string>
     <string name="settings_miscellaneous_title">その他</string>
-    <string name="settings_use_hiyobi_title">hiyobi.meからロード</string>
+    <string name="settings_mirror_title">ミラーサーバー</string>
     <string name="settings_clear_history">履歴を削除</string>
     <string name="settings_clear_history_alert_message">履歴を削除しますか？</string>
     <string name="settings_clear_history_summary">履歴数: %1$d</string>
@@ -61,10 +61,10 @@
     <string name="main_export_error">エクスポートエラーが発生しました</string>
     <string name="settings_clear_downloads">ダウンロード削除</string>
     <string name="settings_clear_downloads_alert_message">ダウンロードしたギャラリーを全て削除します。\n実行しますか？</string>
-    <string name="settings_use_hiyobi_summary">ロード速度を向上させるため可能であればhiyobi.meからイメージロード</string>
+    <string name="settings_mirror_summary">ミラーサーバからイメージをロード</string>
     <string name="main_drawer_favorite">お気に入り</string>
     <string name="main_open_gallery_by_id">ギャラリー番号で見る</string>
-    <string name="main_open_gallery_by_id_error">エラーが発生しました</string>
+    <string name="reader_failed_to_find_gallery">エラーが発生しました</string>
     <string name="settings_storage">ストレージ</string>
     <string name="main_drawer_grouop_contact_discord">ディスコード</string>
     <string name="settings_app_lock">アプリロック</string>
@@ -120,4 +120,6 @@
     <string name="settings_app_version_description">v%s</string>
     <string name="settings_low_quality">低解像度イメージ</string>
     <string name="settings_low_quality_summary">ロード速度とデータ使用料を改善するため低解像度イメージをロード</string>
+    <string name="settings_dl_location_custom">手動で設定</string>
+    <string name="settings_dl_location_not_writable">このフォルダにアクセスできません。他のフォルダを選択してください。</string>
 </resources>

app/src/main/res/values-ko/strings.xml

@@ -18,7 +18,6 @@
     <string name="main_no_result">결과 없음</string>
     <string name="main_search">검색</string>
     <string name="settings_miscellaneous_title">기타</string>
-    <string name="settings_use_hiyobi_title">hiyobi.me 사용</string>
     <string name="settings_clear_history">기록 삭제</string>
     <string name="settings_clear_history_alert_message">기록을 삭제하시겠습니까?</string>
     <string name="settings_clear_history_summary">기록 %1$d개 저장됨</string>
@@ -61,10 +60,9 @@
     <string name="main_export_error">내보내기 오류가 발생했습니다</string>
     <string name="settings_clear_downloads">다운로드 삭제</string>
     <string name="settings_clear_downloads_alert_message">다운로드 된 만화를 모두 삭제합니다.\n계속하시겠습니까?</string>
-    <string name="settings_use_hiyobi_summary">속도 향상을 위해 가능하면 hiyobi.me에서 이미지 로드</string>
     <string name="main_drawer_favorite">즐겨찾기</string>
     <string name="main_open_gallery_by_id">갤러리 번호로 열기</string>
-    <string name="main_open_gallery_by_id_error">갤러리를 찾지 못했습니다</string>
+    <string name="reader_failed_to_find_gallery">갤러리를 찾지 못했습니다</string>
     <string name="settings_storage">저장 공간</string>
     <string name="main_drawer_grouop_contact_discord">디스코드</string>
     <string name="settings_app_lock">앱 잠금</string>
@@ -120,4 +118,8 @@
     <string name="settings_app_version_description">v%s</string>
     <string name="settings_low_quality">저해상도 이미지</string>
     <string name="settings_low_quality_summary">로드 속도와 데이터 사용량을 줄이기 위해 저해상도 이미지를 로드</string>
+    <string name="settings_mirror_summary">미러 서버에서 이미지 로드</string>
+    <string name="settings_mirror_title">미러 설정</string>
+    <string name="settings_dl_location_custom">직접 설정</string>
+    <string name="settings_dl_location_not_writable">이 폴더에 접근할 수 없습니다. 다른 폴더를 선택해주세요.</string>
 </resources>

app/src/main/res/values/arrays.xml

@@ -57,4 +57,9 @@
         <item>japanese|日本語</item>
     </string-array>
 
+    <string-array name="mirrors">
+        <item>HITOMI|hitomi.la</item>
+        <item>HIYOBI|hiyobi.me</item>
+    </string-array>
+
 </resources>

app/src/main/res/values/strings.xml

@@ -60,7 +60,7 @@
     <string name="main_jump_title">Jump to page</string>
     <string name="main_jump_message">Current page: %1$d\nMaximum page: %2$d</string>
     <string name="main_open_gallery_by_id">Open Gallery by ID</string>
-    <string name="main_open_gallery_by_id_error">Failed to open gallery</string>
+    <string name="reader_failed_to_find_gallery">Failed to open gallery</string>
 
     <string name="main_move">Move to page %1$d</string>
 
@@ -140,6 +140,8 @@
     <string name="settings_dl_location_removable">Removable Storage</string>
     <string name="settings_dl_location_internal">Internal Storage</string>
     <string name="settings_dl_location_available">%s available</string>
+    <string name="settings_dl_location_custom">Custom Location</string>
+    <string name="settings_dl_location_not_writable">This folder is not writable. Please select another folder.</string>
     <string name="settings_low_quality">Low quality images</string>
     <string name="settings_low_quality_summary">Load low quality images to improve load speed and data usage</string>
 
@@ -151,8 +153,7 @@
     <!-- SETTINGS/MISCELLANEOUS -->
 
     <string name="settings_miscellaneous_title">Miscellaneous</string>
-    <string name="settings_use_hiyobi_title">Use hiyobi.me</string>
+    <string name="settings_mirror_summary">Load images from mirrors</string>
-    <string name="settings_use_hiyobi_summary">Load images from hiyobi.me to improve loading speed (if available)</string>
     <string name="settings_security_mode_title">Enable security mode</string>
     <string name="settings_security_mode_summary">Enable security mode to make the screen invisible on recent app window</string>
     <string name="settings_dark_mode_title">Dark mode</string>
@@ -186,5 +187,6 @@
     <string name="default_query_dialog_filter_BL">Filter BL</string>
     <string name="default_query_dialog_filter_guro">Filter Guro</string>
     <string name="default_query_dialog_language_selector_none">Any</string>
+    <string name="settings_mirror_title">Mirrors</string>
 
 </resources>

app/src/main/res/xml/root_preferences.xml

@@ -66,10 +66,10 @@
     <PreferenceCategory
         app:title="@string/settings_miscellaneous_title">
 
-        <SwitchPreferenceCompat
+        <Preference
-            app:key="use_hiyobi"
+            app:key="mirrors"
-            app:title="@string/settings_use_hiyobi_title"
+            app:title="@string/settings_mirror_title"
-            app:summary="@string/settings_use_hiyobi_summary"/>
+            app:summary="@string/settings_mirror_summary"/>
 
         <SwitchPreferenceCompat
             app:key="security_mode"

app/src/test/java/xyz/quaver/pupil/ExampleUnitTest.kt

@@ -16,7 +16,7 @@
  *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-@file:Suppress("UNUSED_VARIABLE")
+@file:Suppress("UNUSED_VARIABLE", "IncorrectScope")
 
 package xyz.quaver.pupil
 
@@ -26,20 +26,16 @@ package xyz.quaver.pupil
  * See [testing documentation](http://d.android.com/tools/testing).
  */
 
+import android.util.SparseArray
 import org.junit.Test
-import xyz.quaver.pupil.util.download
-import java.io.File
-import java.net.URL
 
 class ExampleUnitTest {
 
     @Test
     fun test() {
-        URL("https://github.om/tom5079/Pupil/releases/download/4.2-beta2-hotfix2/Pupil-v4.2-beta2-hotfix2.apk").download(
+        val arr = SparseArray<Float>()
-            File(System.getenv("USERPROFILE"), "Pupil.apk")
+
-        ) { downloaded, fileSize ->
+        print(arr.indexOfKey(34))
-            println("%.1f%%".format(downloaded*100.0/fileSize))
-        }
     }
 
 }

build.gradle

@@ -15,7 +15,7 @@ buildscript {
         classpath 'com.google.gms:google-services:4.3.3'
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
-        classpath 'io.fabric.tools:gradle:1.29.0'
+        classpath 'io.fabric.tools:gradle:1.31.0'
         classpath 'com.google.firebase:perf-plugin:1.3.1'
     }
 }
@@ -25,6 +25,7 @@ allprojects {
         google()
         jcenter()
         maven { url "https://jitpack.io" }
+        maven { url 'http://guardian.github.com/maven/repo-releases' }
     }
 }
 

gradle.properties

@@ -1,18 +1,17 @@
-# Project-wide Gradle settings.
+## For more details on how to configure your build environment visit
-# IDE (e.g. Android Studio) users:
-# Gradle settings configured through the IDE *will override*
-# any settings specified in this file.
-# For more details on how to configure your build environment visit
 # http://www.gradle.org/docs/current/userguide/build_environment.html
+#
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
-org.gradle.jvmargs=-Xmx1536m
+# Default value: -Xmx1024m -XX:MaxPermSize=256m
+# org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
+#
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
-# Kotlin code style for this project: "official" or "obsolete":
+#Thu Jan 30 12:29:48 KST 2020
 kotlin.code.style=official
-
+android.enableJetifier=true
+org.gradle.jvmargs=-Xmx1024M -Dkotlin.daemon.jvm.options\="-Xmx1024M"
 android.useAndroidX=true
-android.enableJetifier=true

libpupil/build.gradle

@@ -5,10 +5,10 @@ apply plugin: 'kotlinx-serialization'
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
-    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.2.1'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.3'
     implementation "org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.14.0"
     implementation 'org.jsoup:jsoup:1.12.1'
-    testImplementation 'junit:junit:4.12'
+    testImplementation 'junit:junit:4.13'
 }
 
 sourceCompatibility = "7"

libpupil/src/main/java/xyz/quaver/Code.kt

@@ -0,0 +1,24 @@
+/*
+ *    Copyright 2020 tom5079
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+package xyz.quaver
+
+
+enum class Code {
+    HITOMI,
+    HIYOBI,
+    SORALA
+}

libpupil/src/main/java/xyz/quaver/hitomi/galleries.kt

@@ -16,9 +16,11 @@
 
 package xyz.quaver.hitomi
 
+import kotlinx.serialization.Serializable
 import org.jsoup.Jsoup
 import java.net.URLDecoder
 
+@Serializable
 data class Gallery(
     val related: List<Int>,
     val langList: List<Pair<String, String>>,

libpupil/src/main/java/xyz/quaver/hitomi/galleryblock.kt

@@ -18,6 +18,7 @@ package xyz.quaver.hitomi
 
 import kotlinx.serialization.Serializable
 import org.jsoup.Jsoup
+import xyz.quaver.Code
 import java.net.URL
 import java.net.URLDecoder
 import java.nio.ByteBuffer
@@ -67,6 +68,7 @@ fun fetchNozomi(area: String? = null, tag: String = "index", language: String =
 
 @Serializable
 data class GalleryBlock(
+    val code: Code,
     val id: Int,
     val galleryUrl: String,
     val thumbnails: List<String>,
@@ -102,7 +104,7 @@ fun getGalleryBlock(galleryID: Int) : GalleryBlock? {
             href.slice(5 until href.indexOf("-all"))
         }
 
-        return GalleryBlock(galleryID, galleryUrl, thumbnails, title, artists, series, type, language, relatedTags)
+        return GalleryBlock(Code.HITOMI, galleryID, galleryUrl, thumbnails, title, artists, series, type, language, relatedTags)
     } catch (e: Exception) {
         return null
     }

libpupil/src/main/java/xyz/quaver/hitomi/reader.kt

@@ -18,6 +18,7 @@ package xyz.quaver.hitomi
 
 import kotlinx.serialization.Serializable
 import org.jsoup.Jsoup
+import xyz.quaver.Code
 
 fun getReferer(galleryID: Int) = "https://hitomi.la/reader/$galleryID.html"
 
@@ -31,13 +32,7 @@ data class GalleryInfo(
 )
 
 @Serializable
-data class Reader(val code: Code, val title: String, val galleryInfo: List<GalleryInfo>) {
+data class Reader(val code: Code, val title: String, val galleryInfo: List<GalleryInfo>)
-    enum class Code {
-        HITOMI,
-        HIYOBI,
-        SORALA
-    }
-}
 
 //Set header `Referer` to reader url to avoid 403 error
 fun getReader(galleryID: Int) : Reader {
@@ -45,5 +40,5 @@ fun getReader(galleryID: Int) : Reader {
 
     val doc = Jsoup.connect(readerUrl).get()
 
-   return Reader(Reader.Code.HITOMI, doc.title(), getGalleryInfo(galleryID))
+   return Reader(Code.HITOMI, doc.title(), getGalleryInfo(galleryID))
 }

libpupil/src/main/java/xyz/quaver/hitomi/results.kt

@@ -26,7 +26,7 @@ fun doSearch(query: String, sortByPopularity: Boolean = false) : List<Int> {
     val terms = query
         .trim()
         .replace(Regex("""^\?"""), "")
-        .toLowerCase()
+        .toLowerCase(Locale.US)
         .split(Regex("\\s+"))
         .map {
             it.replace('_', ' ')

libpupil/src/main/java/xyz/quaver/hiyobi/galleryblock.kt

@@ -0,0 +1,49 @@
+/*
+ *    Copyright 2020 tom5079
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+package xyz.quaver.hiyobi
+
+import org.jsoup.Jsoup
+import xyz.quaver.Code
+import xyz.quaver.hitomi.GalleryBlock
+import xyz.quaver.hitomi.protocol
+
+fun getGalleryBlock(galleryID: Int) : GalleryBlock? {
+    val url = "$protocol//$hiyobi/search/$galleryID"
+
+    try {
+        val doc = Jsoup.connect(url).get()
+
+        val galleryBlock = doc.selectFirst(".gallery-content")
+
+        val galleryUrl = galleryBlock.selectFirst("a").attr("href")
+
+        val thumbnails = listOf(galleryBlock.selectFirst("img").attr("abs:src"))
+
+        val title = galleryBlock.selectFirst("b").text()
+        val artists = galleryBlock.select("tr:matches(작가) a[href~=artist]").map { it.text() }
+        val series = galleryBlock.select("tr:matches(원작) a").map { it.attr("href").substringAfter("series:").replace('_', ' ') }
+        val type = galleryBlock.selectFirst("tr:matches(종류) a").attr("href").substringAfter("type:").replace('_', ' ')
+
+        val language = "korean"
+
+        val relatedTags = galleryBlock.select("tr:matches(태그) a").map { it.attr("href").substringAfterLast('/').replace('_', ' ') }
+
+        return GalleryBlock(Code.HIYOBI, galleryID, galleryUrl, thumbnails, title, artists, series, type, language, relatedTags)
+    } catch (e: Exception) {
+        return null
+    }
+}

libpupil/src/main/java/xyz/quaver/hiyobi/reader.kt

@@ -19,6 +19,7 @@ package xyz.quaver.hiyobi
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.list
 import org.jsoup.Jsoup
+import xyz.quaver.Code
 import xyz.quaver.hitomi.GalleryInfo
 import xyz.quaver.hitomi.Reader
 import xyz.quaver.hitomi.protocol
@@ -76,7 +77,7 @@ fun getReader(galleryID: Int) : Reader {
         }
     )
 
-    return Reader(Reader.Code.HIYOBI, title, galleryInfo)
+    return Reader(Code.HIYOBI, title, galleryInfo)
 }
 
 fun createImgList(galleryID: Int, reader: Reader, lowQuality: Boolean = false) =

libpupil/src/test/java/xyz/quaver/hitomi/UnitTest.kt

@@ -102,4 +102,11 @@ class UnitTest {
 
         print(result)
     }
+
+    @Test
+    fun test_hiyobi_galleryBlock() {
+        val galleryBlock = xyz.quaver.hiyobi.getGalleryBlock(10000027)
+
+        print(galleryBlock)
+    }
 }