diff --git a/.idea/misc.xml b/.idea/misc.xml
index 39b64357..7bfef59d 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8 (11)" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/app/src/androidTest/java/xyz/quaver/pupil/ExampleInstrumentedTest.kt b/app/src/androidTest/java/xyz/quaver/pupil/ExampleInstrumentedTest.kt
index 663d6fc3..6d4686e3 100644
--- a/app/src/androidTest/java/xyz/quaver/pupil/ExampleInstrumentedTest.kt
+++ b/app/src/androidTest/java/xyz/quaver/pupil/ExampleInstrumentedTest.kt
@@ -20,8 +20,8 @@
 
 package xyz.quaver.pupil
 
-import android.content.Intent
 import android.util.Log
+import androidx.core.content.ContextCompat
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.rule.ActivityTestRule
@@ -64,7 +64,9 @@ class ExampleInstrumentedTest {
         val activityTestRule = ActivityTestRule(LockActivity::class.java)
         val appContext = InstrumentationRegistry.getInstrumentation().targetContext
 
-        activityTestRule.launchActivity(Intent())
+        ContextCompat.getExternalFilesDirs(appContext, null).forEachIndexed { index, file ->
+            Log.i("PUPILD", "$index: ${file?.absolutePath}")
+        }
     }
 
     @Test
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index d4cf3be9..4db90b6f 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -4,9 +4,6 @@
     package="xyz.quaver.pupil">
 
     <uses-permission android:name="android.permission.INTERNET" />
-    <uses-permission
-        android:name="android.permission.WRITE_EXTERNAL_STORAGE"
-        android:maxSdkVersion="28" />
     <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
     <uses-permission android:name="android.permission.USE_BIOMETRIC" />
 
diff --git a/app/src/main/java/xyz/quaver/pupil/Pupil.kt b/app/src/main/java/xyz/quaver/pupil/Pupil.kt
index 52b9a947..efc52b3b 100644
--- a/app/src/main/java/xyz/quaver/pupil/Pupil.kt
+++ b/app/src/main/java/xyz/quaver/pupil/Pupil.kt
@@ -62,19 +62,15 @@ class Pupil : MultiDexApplication() {
             e.printStackTrace()
         }
 
-        if (!preference.getBoolean("channel_created", false)) {
-            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 {
-                    description = getString(R.string.channel_download_description)
-                    enableLights(false)
-                    enableVibration(false)
-                    lockscreenVisibility = Notification.VISIBILITY_SECRET
-                }
-                manager.createNotificationChannel(channel)
+        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 {
+                description = getString(R.string.channel_download_description)
+                enableLights(false)
+                enableVibration(false)
+                lockscreenVisibility = Notification.VISIBILITY_SECRET
             }
-
-            preference.edit().putBoolean("channel_created", true).apply()
+            manager.createNotificationChannel(channel)
         }
 
         AppCompatDelegate.setDefaultNightMode(when (preference.getBoolean("dark_mode", false)) {
diff --git a/app/src/main/java/xyz/quaver/pupil/ui/MainActivity.kt b/app/src/main/java/xyz/quaver/pupil/ui/MainActivity.kt
index f268d9a0..a536dd36 100644
--- a/app/src/main/java/xyz/quaver/pupil/ui/MainActivity.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/MainActivity.kt
@@ -18,17 +18,11 @@
 
 package xyz.quaver.pupil.ui
 
-import android.Manifest
 import android.app.Activity
-import android.app.DownloadManager
-import android.content.BroadcastReceiver
-import android.content.Context
 import android.content.Intent
-import android.content.IntentFilter
 import android.graphics.drawable.Animatable
 import android.net.Uri
 import android.os.Bundle
-import android.os.Environment
 import android.text.*
 import android.text.style.AlignmentSpan
 import android.view.KeyEvent
@@ -42,7 +36,6 @@ import android.widget.TextView
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.cardview.widget.CardView
-import androidx.core.app.ActivityCompat
 import androidx.core.content.ContextCompat
 import androidx.core.content.res.ResourcesCompat
 import androidx.core.view.GravityCompat
@@ -60,11 +53,8 @@ import kotlinx.coroutines.*
 import kotlinx.serialization.ImplicitReflectionSerializer
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.JsonConfiguration
-import kotlinx.serialization.json.JsonObject
-import kotlinx.serialization.json.content
 import kotlinx.serialization.list
 import kotlinx.serialization.stringify
-import ru.noties.markwon.Markwon
 import xyz.quaver.hitomi.*
 import xyz.quaver.pupil.Pupil
 import xyz.quaver.pupil.R
@@ -72,6 +62,7 @@ import xyz.quaver.pupil.adapters.GalleryBlockAdapter
 import xyz.quaver.pupil.types.Tag
 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 java.io.File
 import java.io.FileOutputStream
@@ -143,8 +134,6 @@ class MainActivity : AppCompatActivity() {
         if (lockManager.isNotEmpty())
             startActivityForResult(Intent(this, LockActivity::class.java), REQUEST_LOCK)
 
-        checkPermissions()
-
         val preference = PreferenceManager.getDefaultSharedPreferences(this)
 
         if (Locale.getDefault().language == "ko") {
@@ -167,7 +156,7 @@ class MainActivity : AppCompatActivity() {
 
         setContentView(R.layout.activity_main)
 
-        checkUpdate()
+        checkUpdate(this)
 
         initView()
     }
@@ -256,125 +245,6 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
-    private fun checkUpdate() {
-
-        val preferences = PreferenceManager.getDefaultSharedPreferences(this)
-        val ignoreUpdateUntil = preferences.getLong("ignore_update_until", 0)
-
-        if (ignoreUpdateUntil > System.currentTimeMillis())
-            return
-
-        fun extractReleaseNote(update: JsonObject, locale: String) : String {
-            val markdown = update["body"]!!.content
-
-            val target = when(locale) {
-                "ko" -> "한국어"
-                "ja" -> "日本語"
-                else -> "English"
-            }
-
-            val releaseNote = Regex("^# Release Note.+$")
-            val language = Regex("^## $target$")
-            val end = Regex("^#.+$")
-
-            var releaseNoteFlag = false
-            var languageFlag = false
-
-            val result = StringBuilder()
-
-            for(line in markdown.lines()) {
-                if (releaseNote.matches(line)) {
-                    releaseNoteFlag = true
-                    continue
-                }
-
-                if (releaseNoteFlag) {
-                    if (language.matches(line)) {
-                        languageFlag = true
-                        continue
-                    }
-                }
-
-                if (languageFlag) {
-                    if (end.matches(line))
-                        break
-
-                    result.append(line+"\n")
-                }
-            }
-
-            return getString(R.string.update_release_note, update["tag_name"]?.content, result.toString())
-        }
-
-        CoroutineScope(Dispatchers.Default).launch {
-            val update =
-                checkUpdate(getString(R.string.release_url)) ?: return@launch
-
-            val (url, fileName) = getApkUrl(update) ?: return@launch
-            fileName ?: return@launch
-
-            val dialog = AlertDialog.Builder(this@MainActivity).apply {
-                setTitle(R.string.update_title)
-                val msg = extractReleaseNote(update, Locale.getDefault().language)
-                setMessage(Markwon.create(context).toMarkdown(msg))
-                setPositiveButton(android.R.string.yes) { _, _ ->
-                    if (!this@MainActivity.hasPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
-                        AlertDialog.Builder(this@MainActivity).apply {
-                            setTitle(R.string.warning)
-                            setMessage(R.string.update_no_permission)
-                            setPositiveButton(android.R.string.ok) { _, _ -> }
-                        }.show()
-
-                        return@setPositiveButton
-                    }
-
-                    val request = DownloadManager.Request(Uri.parse(url)).apply {
-                        setDescription(getString(R.string.update_notification_description))
-                        setTitle(getString(R.string.app_name))
-                        setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, fileName)
-                    }
-
-                    val manager = getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
-                    val id = manager.enqueue(request)
-
-                    registerReceiver(object: BroadcastReceiver() {
-                        override fun onReceive(context: Context?, intent: Intent?) {
-                            try {
-                                val install = Intent(Intent.ACTION_VIEW).apply {
-                                    flags = Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_GRANT_READ_URI_PERMISSION
-                                    setDataAndType(manager.getUriForDownloadedFile(id), manager.getMimeTypeForDownloadedFile(id))
-                                }
-
-                                startActivity(install)
-                                unregisterReceiver(this)
-                            } catch (e: Exception) {
-                                AlertDialog.Builder(this@MainActivity).apply {
-                                    setTitle(R.string.update_failed)
-                                    setMessage(R.string.update_failed_message)
-                                    setPositiveButton(android.R.string.ok) { _, _ -> }
-                                }.show()
-                            }
-                        }
-                    }, IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE))
-                }
-                setNegativeButton(R.string.ignore_update) { _, _ ->
-                    preferences.edit()
-                        .putLong("ignore_update_until", System.currentTimeMillis() + 604800000)
-                        .apply()
-                }
-            }
-
-            launch(Dispatchers.Main) {
-                dialog.show()
-            }
-        }
-    }
-
-    private fun checkPermissions() {
-        if (!hasPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE))
-            ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.WRITE_EXTERNAL_STORAGE), 13489)
-    }
-
     private fun initView() {
         var prevP1 = 0
         main_appbar_layout.addOnOffsetChangedListener(
@@ -613,7 +483,10 @@ class MainActivity : AppCompatActivity() {
 
                     val galleryID = galleries[position].first.id
 
-                    GalleryDialog(this@MainActivity, galleryID).apply {
+                    GalleryDialog(
+                        this@MainActivity,
+                        galleryID
+                    ).apply {
                         onChipClickedHandler.add {
                             runOnUiThread {
                                 query = it.toQuery()
diff --git a/app/src/main/java/xyz/quaver/pupil/ui/ReaderActivity.kt b/app/src/main/java/xyz/quaver/pupil/ui/ReaderActivity.kt
index 938228b0..5aabc92d 100644
--- a/app/src/main/java/xyz/quaver/pupil/ui/ReaderActivity.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/ReaderActivity.kt
@@ -36,6 +36,7 @@ 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.*
@@ -95,7 +96,8 @@ class ReaderActivity : AppCompatActivity() {
 
         handleIntent(intent)
 
-        Crashlytics.setInt("GalleryID", galleryID)
+        if (Fabric.isInitialized())
+            Crashlytics.setInt("GalleryID", galleryID)
 
         if (galleryID == 0) {
             onBackPressed()
diff --git a/app/src/main/java/xyz/quaver/pupil/ui/SettingsActivity.kt b/app/src/main/java/xyz/quaver/pupil/ui/SettingsActivity.kt
index 60f9a724..291c7753 100644
--- a/app/src/main/java/xyz/quaver/pupil/ui/SettingsActivity.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/SettingsActivity.kt
@@ -44,8 +44,10 @@ import kotlinx.serialization.parseList
 import xyz.quaver.pupil.Pupil
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.types.Tags
+import xyz.quaver.pupil.ui.dialog.DownloadLocationDialog
 import xyz.quaver.pupil.util.Lock
 import xyz.quaver.pupil.util.LockManager
+import xyz.quaver.pupil.util.byteToString
 import xyz.quaver.pupil.util.getDownloadDirectory
 import java.io.File
 import java.nio.charset.Charset
@@ -85,14 +87,6 @@ class SettingsActivity : AppCompatActivity() {
 
     class SettingsFragment : PreferenceFragmentCompat() {
 
-        private val suffix = listOf(
-            "B",
-            "kB",
-            "MB",
-            "GB",
-            "TB" //really?
-        )
-
         override fun onResume() {
             super.onResume()
 
@@ -112,15 +106,9 @@ class SettingsActivity : AppCompatActivity() {
         }
 
         private fun getDirSize(dir: File) : String {
-            var size = dir.walk().map { it.length() }.sum()
-            var suffixIndex = 0
+            val size = dir.walk().map { it.length() }.sum()
 
-            while (size >= 1024) {
-                size /= 1024
-                suffixIndex++
-            }
-
-            return getString(R.string.settings_clear_summary, size, suffix[suffixIndex])
+            return getString(R.string.settings_clear_summary, byteToString(size))
         }
 
         override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
@@ -208,6 +196,25 @@ class SettingsActivity : AppCompatActivity() {
                 }
             }
 
+            with(findPreference<Preference>("dl_location")) {
+                this!!
+
+                summary = getDownloadDirectory(context).absolutePath
+
+                onPreferenceClickListener = Preference.OnPreferenceClickListener {
+                    DownloadLocationDialog(context).apply {
+                        onDownloadLocationChangedListener = { value ->
+                            PreferenceManager.getDefaultSharedPreferences(context).edit()
+                                .putInt(key, value)
+                                .apply()
+                            summary = getDownloadDirectory(context).absolutePath
+                        }
+                    }.show()
+
+                    true
+                }
+            }
+
             with(findPreference<Preference>("default_query")) {
                 this!!
 
diff --git a/app/src/main/java/xyz/quaver/pupil/ui/dialog/DownloadLocationDialog.kt b/app/src/main/java/xyz/quaver/pupil/ui/dialog/DownloadLocationDialog.kt
new file mode 100644
index 00000000..3fcae22a
--- /dev/null
+++ b/app/src/main/java/xyz/quaver/pupil/ui/dialog/DownloadLocationDialog.kt
@@ -0,0 +1,78 @@
+/*
+ *     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.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 xyz.quaver.pupil.R
+import xyz.quaver.pupil.util.byteToString
+
+@SuppressLint("InflateParams")
+class DownloadLocationDialog(context: Context) : AlertDialog(context) {
+
+    private val preference = PreferenceManager.getDefaultSharedPreferences(context)
+    private val buttons = mutableListOf<RadioButton>()
+    var onDownloadLocationChangedListener : ((Int) -> (Unit))? = null
+
+    init {
+        val view = layoutInflater.inflate(R.layout.dialog_dl_location, null) as LinearLayout
+
+        ContextCompat.getExternalFilesDirs(context, null).forEachIndexed { index, dir ->
+
+            dir ?: return@forEachIndexed
+
+            view.addView(layoutInflater.inflate(R.layout.item_dl_location, view, false).apply {
+                location_type.text = context.getString(when (index) {
+                    0 -> R.string.settings_dl_location_internal
+                    else -> R.string.settings_dl_location_removable
+                })
+                location_available.text = context.getString(
+                    R.string.settings_dl_location_available,
+                    byteToString(dir.freeSpace)
+                )
+                setOnClickListener {
+                    buttons.forEach { button ->
+                        button.isChecked = false
+                    }
+                    button.performClick()
+                    onDownloadLocationChangedListener?.invoke(index)
+                }
+                buttons.add(button)
+            })
+        }
+
+        buttons[preference.getInt("dl_location", 0)].isChecked = true
+
+        setTitle(R.string.settings_dl_location)
+
+        setView(view)
+
+        setButton(Dialog.BUTTON_POSITIVE, context.getText(android.R.string.ok)) { _, _ ->
+            dismiss()
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/xyz/quaver/pupil/ui/GalleryDialog.kt b/app/src/main/java/xyz/quaver/pupil/ui/dialog/GalleryDialog.kt
similarity index 97%
rename from app/src/main/java/xyz/quaver/pupil/ui/GalleryDialog.kt
rename to app/src/main/java/xyz/quaver/pupil/ui/dialog/GalleryDialog.kt
index aa02bbea..8896a4f8 100644
--- a/app/src/main/java/xyz/quaver/pupil/ui/GalleryDialog.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/dialog/GalleryDialog.kt
@@ -1,6 +1,6 @@
 /*
  *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2019  tom5079
+ *     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
@@ -16,7 +16,7 @@
  *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-package xyz.quaver.pupil.ui
+package xyz.quaver.pupil.ui.dialog
 
 import android.app.Dialog
 import android.content.Context
@@ -46,6 +46,7 @@ import xyz.quaver.pupil.R
 import xyz.quaver.pupil.adapters.GalleryBlockAdapter
 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.wordCapitalize
 
@@ -256,7 +257,10 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
                         (context.applicationContext as Pupil).histories.add(galleries[position].first.id)
                     }
                     .setOnItemLongClickListener { _, position, _ ->
-                        GalleryDialog(context, galleries[position].first.id).apply {
+                        GalleryDialog(
+                            context,
+                            galleries[position].first.id
+                        ).apply {
                             onChipClickedHandler.add { tag ->
                                 this@GalleryDialog.onChipClickedHandler.forEach { it.invoke(tag) }
                             }
diff --git a/app/src/main/java/xyz/quaver/pupil/util/GalleryDownloader.kt b/app/src/main/java/xyz/quaver/pupil/util/GalleryDownloader.kt
index 07538401..2eb58b08 100644
--- a/app/src/main/java/xyz/quaver/pupil/util/GalleryDownloader.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/GalleryDownloader.kt
@@ -163,8 +163,6 @@ class GalleryDownloader(
         }
     }
 
-    private fun webpUrlFromUrl(url: String) = url.replace("/galleries/", "/webp/") + ".webp"
-
     fun start() {
         downloadJob = CoroutineScope(Dispatchers.Default).launch {
             val reader = reader!!.await() ?: return@launch
diff --git a/app/src/main/java/xyz/quaver/pupil/util/file.kt b/app/src/main/java/xyz/quaver/pupil/util/file.kt
index 84342718..dd38730b 100644
--- a/app/src/main/java/xyz/quaver/pupil/util/file.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/file.kt
@@ -19,9 +19,10 @@
 package xyz.quaver.pupil.util
 
 import android.content.Context
-import android.os.Build
-import android.os.Environment
+import androidx.core.content.ContextCompat
+import androidx.preference.PreferenceManager
 import java.io.File
+import java.net.URL
 
 fun getCachedGallery(context: Context, galleryID: Int): File {
     return File(getDownloadDirectory(context), galleryID.toString()).let {
@@ -32,10 +33,32 @@ fun getCachedGallery(context: Context, galleryID: Int): File {
     }
 }
 
-@Suppress("DEPRECATION")
 fun getDownloadDirectory(context: Context): File {
-    return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q)
-        context.getExternalFilesDir("Pupil")!!
-    else
-        File(Environment.getExternalStorageDirectory(), "Pupil")
+    val dlLocation = PreferenceManager.getDefaultSharedPreferences(context).getInt("dl_location", 0)
+
+    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()
+
+            getInputStream().use {
+
+                var bytesCopied: Long = 0
+                val buffer = ByteArray(DEFAULT_BUFFER_SIZE)
+                var bytes = it.read(buffer)
+                while (bytes >= 0) {
+                    out.write(buffer, 0, bytes)
+                    bytesCopied += bytes
+                    onDownloadProgress?.invoke(bytesCopied, fileSize)
+                    bytes = it.read(buffer)
+                }
+
+            }
+        }
+
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/xyz/quaver/pupil/util/misc.kt b/app/src/main/java/xyz/quaver/pupil/util/misc.kt
index 05deb0fc..87b38bb6 100644
--- a/app/src/main/java/xyz/quaver/pupil/util/misc.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/misc.kt
@@ -24,6 +24,7 @@ import android.os.Build
 import androidx.core.content.ContextCompat
 import java.util.*
 import kotlin.collections.ArrayList
+import kotlin.math.round
 
 //Android Q+ uses scoped storage thus not requiring permission
 fun Context.hasPermission(permission: String) =
@@ -37,4 +38,33 @@ fun String.wordCapitalize() : String {
         result.add(word.capitalize(Locale.getDefault()))
 
     return result.joinToString(" ")
+}
+
+
+//https://discuss.kotlinlang.org/t/how-do-you-round-a-number-to-n-decimal-places/8843(fvasco)
+fun Double.round(decimals: Int): Double {
+    var multiplier = 1.0
+    repeat(decimals) { multiplier *= 10 }
+    return round(this * multiplier) / multiplier
+}
+
+fun byteToString(byte: Long, precision : Int = 1) : String {
+
+    val suffix = listOf(
+        "B",
+        "kB",
+        "MB",
+        "GB",
+        "TB" //really?
+    )
+    var size = byte.toDouble()
+    var suffixIndex = 0
+
+    while (size >= 1024) {
+        size /= 1024
+        suffixIndex++
+    }
+
+    return "${size.round(precision)} ${suffix[suffixIndex]}"
+
 }
\ No newline at end of file
diff --git a/app/src/main/java/xyz/quaver/pupil/util/update.kt b/app/src/main/java/xyz/quaver/pupil/util/update.kt
index c42c13d8..13266ae6 100644
--- a/app/src/main/java/xyz/quaver/pupil/util/update.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/update.kt
@@ -18,15 +18,31 @@
 
 package xyz.quaver.pupil.util
 
+import android.app.PendingIntent
 import android.content.Context
+import android.content.Intent
+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.*
 
 fun getReleases(url: String) : JsonArray {
     return try {
@@ -58,14 +74,127 @@ fun checkUpdate(url: String) : JsonObject? {
     }
 }
 
-fun getApkUrl(releases: JsonObject) : Pair<String?, String?>? {
+fun getApkUrl(releases: JsonObject) : String? {
     return releases["assets"]?.jsonArray?.firstOrNull {
         Regex("Pupil-v.+\\.apk").matches(it.jsonObject["name"]?.content ?: "")
     }.let {
-        if (it == null)
-            null
-        else
-            Pair(it.jsonObject["browser_download_url"]?.content, it.jsonObject["name"]?.content)
+        it?.jsonObject?.get("browser_download_url")?.content
+    }
+}
+
+val UPDATE_NOTIFICATION_ID = 384823
+fun checkUpdate(context: AppCompatActivity) {
+
+    val preferences = PreferenceManager.getDefaultSharedPreferences(context)
+    val ignoreUpdateUntil = preferences.getLong("ignore_update_until", 0)
+
+    if (ignoreUpdateUntil > System.currentTimeMillis())
+        return
+
+    fun extractReleaseNote(update: JsonObject, locale: Locale) : String {
+        val markdown = update["body"]!!.content
+
+        val target = when(locale) {
+            Locale.KOREAN -> "한국어"
+            Locale.JAPANESE -> "日本語"
+            else -> "English"
+        }
+
+        val releaseNote = Regex("^# Release Note.+$")
+        val language = Regex("^## $target$")
+        val end = Regex("^#.+$")
+
+        var releaseNoteFlag = false
+        var languageFlag = false
+
+        val result = StringBuilder()
+
+        for(line in markdown.lines()) {
+            if (releaseNote.matches(line)) {
+                releaseNoteFlag = true
+                continue
+            }
+
+            if (releaseNoteFlag) {
+                if (language.matches(line)) {
+                    languageFlag = true
+                    continue
+                }
+            }
+
+            if (languageFlag) {
+                if (end.matches(line))
+                    break
+
+                result.append(line+"\n")
+            }
+        }
+
+        return context.getString(R.string.update_release_note, update["tag_name"]?.content, result.toString())
+    }
+
+    CoroutineScope(Dispatchers.Default).launch {
+        val update =
+            checkUpdate(context.getString(R.string.release_url)) ?: return@launch
+
+        val url = getApkUrl(update) ?: return@launch
+
+        val dialog = AlertDialog.Builder(context).apply {
+            setTitle(R.string.update_title)
+            val msg = extractReleaseNote(update, Locale.getDefault())
+            setMessage(Markwon.create(context).toMarkdown(msg))
+            setPositiveButton(android.R.string.yes) { _, _ ->
+
+                val notificationManager = NotificationManagerCompat.from(context)
+                val builder = NotificationCompat.Builder(context, "download").apply {
+                    setContentTitle(context.getString(R.string.update_notification_description))
+                    setSmallIcon(android.R.drawable.stat_sys_download)
+                    priority = NotificationCompat.PRIORITY_LOW
+                }
+
+                CoroutineScope(Dispatchers.IO).launch {
+                    val target = File(getDownloadDirectory(context), "Pupil.apk")
+
+                    URL(url).download(target) { progress, fileSize ->
+                        builder.setProgress(fileSize.toInt(), progress.toInt(), false)
+                        notificationManager.notify(UPDATE_NOTIFICATION_ID, builder.build())
+                    }
+
+                    val install = Intent(Intent.ACTION_VIEW).apply {
+                        flags = Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_GRANT_READ_URI_PERMISSION
+                        setDataAndType(FileProvider.getUriForFile(
+                            context,
+                            context.applicationContext.packageName + ".fileprovider",
+                            target
+                        ), MimeTypeMap.getSingleton().getExtensionFromMimeType(".apk"))
+                    }
+
+                    builder.apply {
+                        setContentIntent(PendingIntent.getActivity(context, 0, install, 0))
+                        setProgress(0, 0, false)
+                        setSmallIcon(android.R.drawable.stat_sys_download_done)
+                        setContentTitle(context.getString(R.string.update_download_completed))
+                        setContentText(context.getString(R.string.update_download_completed_description))
+                    }
+
+                    notificationManager.cancel(UPDATE_NOTIFICATION_ID)
+
+                    if (context.lifecycle.currentState.isAtLeast(Lifecycle.State.RESUMED))
+                        context.startActivity(install)
+                    else
+                        notificationManager.notify(UPDATE_NOTIFICATION_ID, builder.build())
+                }
+            }
+            setNegativeButton(R.string.ignore_update) { _, _ ->
+                preferences.edit()
+                    .putLong("ignore_update_until", System.currentTimeMillis() + 604800000)
+                    .apply()
+            }
+        }
+
+        launch(Dispatchers.Main) {
+            dialog.show()
+        }
     }
 }
 
diff --git a/app/src/main/res/layout/dialog_dl_location.xml b/app/src/main/res/layout/dialog_dl_location.xml
new file mode 100644
index 00000000..fde6c7d9
--- /dev/null
+++ b/app/src/main/res/layout/dialog_dl_location.xml
@@ -0,0 +1,25 @@
+<?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/>.
+  -->
+
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="16dp"/>
\ No newline at end of file
diff --git a/app/src/main/res/layout/item_dl_location.xml b/app/src/main/res/layout/item_dl_location.xml
new file mode 100644
index 00000000..50335e91
--- /dev/null
+++ b/app/src/main/res/layout/item_dl_location.xml
@@ -0,0 +1,51 @@
+<?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/>.
+  -->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="horizontal" android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:clickable="true"
+    android:focusable="true">
+
+    <RadioButton
+        android:id="@+id/button"
+        android:clickable="false"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"/>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:layout_gravity="center_vertical">
+
+        <TextView
+            android:id="@+id/location_type"
+            style="@style/MaterialAlertDialog.MaterialComponents.Title.Text"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"/>
+
+        <TextView
+            android:id="@+id/location_available"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"/>
+
+    </LinearLayout>
+
+</LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index 3614852e..625fcd2b 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -9,7 +9,7 @@
     <string name="search_hint_with_page">ギャラリー検索</string>
     <string name="settings_clear_cache">キャッシュクリア</string>
     <string name="settings_clear_cache_alert_message">キャッシュをクリアするとイメージのロード速度に影響を与えます。実行しますか？</string>
-    <string name="settings_clear_summary">サイズ: %1$d%2$s</string>
+    <string name="settings_clear_summary">サイズ: %s</string>
     <string name="settings_default_query">デフォルトキーワード</string>
     <string name="settings_galleries_per_page">一回にロードするギャラリー数</string>
     <string name="settings_search_title">検索設定</string>
@@ -110,4 +110,10 @@
     <string name="settings_backup_checkout">確認</string>
     <string name="settings_restore_failed">復元に失敗しました</string>
     <string name="settings_restore_successful">%1$d項目を復元しました</string>
+    <string name="settings_dl_location">ダウンロード場所</string>
+    <string name="settings_dl_location_internal">内部ストレージ</string>
+    <string name="settings_dl_location_removable">外部SDカード</string>
+    <string name="settings_dl_location_available">%s 使用可能</string>
+    <string name="update_download_completed">ダウンロードが完了しました</string>
+    <string name="update_download_completed_description">ここをクリックしてアップデートを行えます</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values-ko/strings.xml b/app/src/main/res/values-ko/strings.xml
index e93e36cf..5c2ecdde 100644
--- a/app/src/main/res/values-ko/strings.xml
+++ b/app/src/main/res/values-ko/strings.xml
@@ -8,7 +8,7 @@
     <string name="settings_default_query">기본 검색어</string>
     <string name="settings_clear_cache">캐시 정리하기</string>
     <string name="settings_clear_cache_alert_message">캐시를 정리하면 이미지 로딩속도가 느려질 수 있습니다. 계속하시겠습니까?</string>
-    <string name="settings_clear_summary">사용량: %1$d%2$s</string>
+    <string name="settings_clear_summary">사용량: %s</string>
     <string name="settings_galleries_per_page">한 번에 로드할 갤러리 수</string>
     <string name="settings_search_title">검색 설정</string>
     <string name="settings_title">설정</string>
@@ -110,4 +110,10 @@
     <string name="settings_backup_checkout">확인</string>
     <string name="settings_restore_failed">복원에 실패했습니다</string>
     <string name="settings_restore_successful">%1$d개 항목을 복원했습니다</string>
+    <string name="settings_dl_location">다운로드 위치</string>
+    <string name="settings_dl_location_internal">내부 저장공간</string>
+    <string name="settings_dl_location_removable">외부 SD카드</string>
+    <string name="settings_dl_location_available">%s 사용 가능</string>
+    <string name="update_download_completed">다운로드가 완료되었습니다</string>
+    <string name="update_download_completed_description">여기를 클릭해서 업데이트를 진행할 수 있습니다</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 5f695d13..afd7d1fd 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -76,7 +76,9 @@
 
     <string name="update_title">Update available</string>
     <string name="update_download_started">Download started</string>
-    <string name="update_notification_description">Downloading apk&#8230;</string>
+    <string name="update_download_completed">Download Completed</string>
+    <string name="update_download_completed_description">Click here to update</string>
+    <string name="update_notification_description">Downloading update&#8230;</string>
     <string name="update_release_note"># Release Note(v%1$s)\n%2$s</string>
 
     <string name="search_hint">Search galleries</string>
@@ -96,6 +98,8 @@
     <string name="galleryblock_type">Type: %1$s</string>
     <string name="galleryblock_language">Language: %1$s</string>
 
+    <!-- READER -->
+
     <string name="reader_loading">Loading</string>
     <string name="reader_go_to_page">Go to page</string>
     <string name="reader_fab_fullscreen">Fullscreen</string>
@@ -107,22 +111,38 @@
 
     <string name="reader_help">Help</string>
 
+    <!-- SETTINGS -->
+
     <string name="settings_title">Settings</string>
+
     <string name="settings_app_version_title">App version</string>
     <string name="settings_search_title">Search Settings</string>
     <string name="settings_galleries_per_page">Galleries per page</string>
     <string name="settings_default_query">Default query</string>
+
+    <!-- SETTINGS/STORAGE -->
+
     <string name="settings_storage">Storage</string>
     <string name="settings_clear_cache">Clear cache</string>
     <string name="settings_clear_cache_alert_message">Deleting cache can affect image loading speed. Do you want to continue?</string>
-    <string name="settings_clear_summary">Currently using %1$d%2$s</string>
+    <string name="settings_clear_summary">Currently using %s</string>
     <string name="settings_clear_downloads">Clear downloads</string>
     <string name="settings_clear_downloads_alert_message">Delete all downloaded galleries.\nDo you want to continue?</string>
     <string name="settings_clear_history">Clear history</string>
     <string name="settings_clear_history_alert_message">Do you want to clear histories?</string>
     <string name="settings_clear_history_summary">%1$d histories saved</string>
+    <string name="settings_dl_location">Download directory</string>
+    <string name="settings_dl_location_removable">Removable Storage</string>
+    <string name="settings_dl_location_internal">Internal Storage</string>
+    <string name="settings_dl_location_available">%s available</string>
+
+    <!-- SETTINGS/APP LOCK -->
+
     <string name="settings_app_lock">App lock</string>
     <string name="settings_app_lock_type">App lock type</string>
+
+    <!-- SETTINGS/MISCELLANEOUS -->
+
     <string name="settings_miscellaneous_title">Miscellaneous</string>
     <string name="settings_use_hiyobi_title">Use hiyobi.me</string>
     <string name="settings_use_hiyobi_summary">Load images from hiyobi.me to improve loading speed (if available)</string>
@@ -139,6 +159,8 @@
     <string name="settings_restore_failed">Restore failed</string>
     <string name="settings_restore_successful">%1$d entries restored</string>
 
+    <!-- SETTINGS/APP LOCK ACTIVITY -->
+
     <string name="settings_lock_none">None</string>
     <string name="settings_lock_pattern">Pattern</string>
     <string name="settings_lock_pin" translatable="false">PIN</string>
@@ -150,6 +172,8 @@
     <string name="settings_lock_remove_message">Do you want to remove lock?</string>
     <string name="settings_lock_wrong_confirm">Lock is different from last one. Please try again.</string>
 
+    <!-- SETTINGS/DEFAULT QUERY DIALOG -->
+
     <string name="default_query_dialog_title">Set default query</string>
     <string name="default_query_dialog_language">Language: </string>
     <string name="default_query_dialog_filter_BL">Filter BL</string>
diff --git a/app/src/main/res/xml/root_preferences.xml b/app/src/main/res/xml/root_preferences.xml
index 244a015f..4cf82f4e 100644
--- a/app/src/main/res/xml/root_preferences.xml
+++ b/app/src/main/res/xml/root_preferences.xml
@@ -39,6 +39,10 @@
             app:title="@string/settings_clear_history"
             app:key="clear_history"/>
 
+        <Preference
+            app:title="@string/settings_dl_location"
+            app:key="dl_location"/>
+
     </PreferenceCategory>
 
     <PreferenceCategory
diff --git a/app/src/test/java/xyz/quaver/pupil/ExampleUnitTest.kt b/app/src/test/java/xyz/quaver/pupil/ExampleUnitTest.kt
index 2aef6c6b..795f7983 100644
--- a/app/src/test/java/xyz/quaver/pupil/ExampleUnitTest.kt
+++ b/app/src/test/java/xyz/quaver/pupil/ExampleUnitTest.kt
@@ -27,12 +27,19 @@ package xyz.quaver.pupil
  */
 
 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(
+            File(System.getenv("USERPROFILE"), "Pupil.apk")
+        ) { downloaded, fileSize ->
+            println("%.1f%%".format(downloaded*100.0/fileSize))
+        }
     }
 
 }