Application update checker

app/src/main/AndroidManifest.xml

@@ -47,6 +47,7 @@
 		<service
 			android:name=".ui.download.DownloadService"
 			android:foregroundServiceType="dataSync" />
+		<service android:name=".ui.settings.UpdateService" />
 
 		<provider
 			android:name=".ui.search.MangaSuggestionsProvider"

app/src/main/java/org/koitharu/kotatsu/core/github/AppVersion.kt

@@ -0,0 +1,19 @@
+package org.koitharu.kotatsu.core.github
+
+import android.os.Parcelable
+import kotlinx.android.parcel.Parcelize
+
+@Parcelize
+data class AppVersion(
+	val id: Long,
+	val name: String,
+	val url: String,
+	val apkSize: Long,
+	val apkUrl: String
+) : Parcelable {
+
+	fun isGreaterThen(version: String) {
+		val thisParts = name.substringBeforeLast('-').split('.')
+		val parts = version.substringBeforeLast('-').split('.')
+	}
+}

app/src/main/java/org/koitharu/kotatsu/core/github/GithubRepository.kt

@@ -0,0 +1,28 @@
+package org.koitharu.kotatsu.core.github
+
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import org.koin.core.KoinComponent
+import org.koin.core.inject
+import org.koitharu.kotatsu.utils.ext.await
+import org.koitharu.kotatsu.utils.ext.parseJson
+
+class GithubRepository : KoinComponent {
+
+	private val okHttp by inject<OkHttpClient>()
+
+	suspend fun getLatestVersion(): AppVersion {
+		val request = Request.Builder()
+			.get()
+			.url("https://api.github.com/repos/nv95/Kotatsu/releases/latest")
+		val json = okHttp.newCall(request.build()).await().parseJson()
+		val asset = json.getJSONArray("assets").getJSONObject(0)
+		return AppVersion(
+			id = json.getLong("id"),
+			url = json.getString("html_url"),
+			name = json.getString("name").removePrefix("v"),
+			apkSize = asset.getLong("size"),
+			apkUrl = asset.getString("browser_download_url")
+		)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/core/github/VersionId.kt

@@ -0,0 +1,57 @@
+package org.koitharu.kotatsu.core.github
+
+import java.util.*
+
+data class VersionId(
+	val major: Int,
+	val minor: Int,
+	val build: Int,
+	val variantType: String,
+	val variantNumber: Int
+) : Comparable<VersionId> {
+
+	override fun compareTo(other: VersionId): Int {
+		var diff = major.compareTo(other.major)
+		if (diff != 0) {
+			return diff
+		}
+		diff = minor.compareTo(other.minor)
+		if (diff != 0) {
+			return diff
+		}
+		diff = build.compareTo(other.build)
+		if (diff != 0) {
+			return diff
+		}
+		diff = variantWeight(variantType).compareTo(variantWeight(other.variantType))
+		if (diff != 0) {
+			return diff
+		}
+		return variantNumber.compareTo(other.variantNumber)
+	}
+
+	companion object {
+
+		@JvmStatic
+		private fun variantWeight(variantType: String) =
+			when (variantType.toLowerCase(Locale.ROOT)) {
+				"a" -> 1
+				"b" -> 2
+				"rc" -> 4
+				else -> 8
+			}
+
+		@JvmStatic
+		fun parse(versionName: String): VersionId {
+			val parts = versionName.substringBeforeLast('-').split('.')
+			val variant = versionName.substringAfterLast('-', "")
+			return VersionId(
+				major = parts.getOrNull(0)?.toIntOrNull() ?: 0,
+				minor = parts.getOrNull(1)?.toIntOrNull() ?: 0,
+				build = parts.getOrNull(2)?.toIntOrNull() ?: 0,
+				variantType = variant.filter(Char::isLetter),
+				variantNumber = variant.filter(Char::isDigit).toIntOrNull() ?: 0
+			)
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/download/DownloadNotification.kt

@@ -23,7 +23,8 @@ class DownloadNotification(private val context: Context) {
 		context.applicationContext.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
 
 	init {
-		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O
+			&& manager.getNotificationChannel(CHANNEL_ID) == null) {
 			val channel = NotificationChannel(
 				CHANNEL_ID,
 				context.getString(R.string.downloads),
@@ -67,6 +68,7 @@ class DownloadNotification(private val context: Context) {
 		builder.setSmallIcon(android.R.drawable.stat_notify_error)
 		builder.setSubText(context.getString(R.string.error))
 		builder.setContentText(e.getDisplayMessage(context.resources))
+		builder.setAutoCancel(true)
 		builder.setContentIntent(null)
 	}
 
@@ -92,6 +94,7 @@ class DownloadNotification(private val context: Context) {
 		builder.setProgress(0, 0, false)
 		builder.setContentText(context.getString(R.string.download_complete))
 		builder.setContentIntent(createIntent(context, manga))
+		builder.setAutoCancel(true)
 		builder.setSmallIcon(android.R.drawable.stat_sys_download_done)
 	}
 

app/src/main/java/org/koitharu/kotatsu/ui/main/MainActivity.kt

@@ -9,6 +9,7 @@ import android.view.Menu
 import android.view.MenuItem
 import androidx.appcompat.app.ActionBarDrawerToggle
 import androidx.core.view.isVisible
+import androidx.core.view.postDelayed
 import androidx.fragment.app.Fragment
 import androidx.swiperefreshlayout.widget.CircularProgressDrawable
 import com.google.android.material.navigation.NavigationView
@@ -28,6 +29,7 @@ import org.koitharu.kotatsu.ui.main.list.remote.RemoteListFragment
 import org.koitharu.kotatsu.ui.reader.ReaderActivity
 import org.koitharu.kotatsu.ui.reader.ReaderState
 import org.koitharu.kotatsu.ui.settings.SettingsActivity
+import org.koitharu.kotatsu.ui.settings.UpdateService
 import org.koitharu.kotatsu.utils.ext.getDisplayMessage
 import org.koitharu.kotatsu.utils.ext.resolveDp
 
@@ -64,6 +66,9 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
 			navigationView.setCheckedItem(R.id.nav_history)
 			setPrimaryFragment(HistoryListFragment.newInstance())
 		}
+		drawer.postDelayed(4000) {
+			UpdateService.startIfRequired(applicationContext)
+		}
 	}
 
 	override fun onDestroy() {

app/src/main/java/org/koitharu/kotatsu/ui/settings/AboutSettingsFragment.kt

@@ -0,0 +1,12 @@
+package org.koitharu.kotatsu.ui.settings
+
+import android.os.Bundle
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.ui.common.BasePreferenceFragment
+
+class AboutSettingsFragment : BasePreferenceFragment(R.string.about_app) {
+
+	override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
+		addPreferencesFromResource(R.xml.pref_about)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/settings/UpdateService.kt

@@ -0,0 +1,109 @@
+package org.koitharu.kotatsu.ui.settings
+
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.content.Context
+import android.content.Intent
+import android.graphics.BitmapFactory
+import android.net.Uri
+import android.os.Build
+import androidx.core.app.NotificationCompat
+import androidx.core.content.edit
+import androidx.preference.PreferenceManager
+import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import org.koitharu.kotatsu.BuildConfig
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.github.AppVersion
+import org.koitharu.kotatsu.core.github.GithubRepository
+import org.koitharu.kotatsu.core.github.VersionId
+import org.koitharu.kotatsu.ui.common.BaseService
+import org.koitharu.kotatsu.utils.FileSizeUtils
+import java.util.concurrent.TimeUnit
+
+class UpdateService : BaseService() {
+
+	override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+		launch(Dispatchers.IO) {
+			try {
+				val repo = GithubRepository()
+				val version = repo.getLatestVersion()
+				val newVersionId = VersionId.parse(version.name)
+				val currentVersionId = VersionId.parse(BuildConfig.VERSION_NAME)
+				if (newVersionId > currentVersionId) {
+					withContext(Dispatchers.Main) {
+						showUpdateNotification(version)
+					}
+				}
+				PreferenceManager.getDefaultSharedPreferences(this@UpdateService).edit(true) {
+					putLong(getString(R.string.key_app_update), System.currentTimeMillis())
+				}
+			} catch (_: CancellationException) {
+			} catch (e: Throwable) {
+				if (BuildConfig.DEBUG) {
+					e.printStackTrace()
+				}
+			} finally {
+				withContext(Dispatchers.Main) {
+					stopSelf(startId)
+				}
+			}
+		}
+		return START_NOT_STICKY
+	}
+
+	private fun showUpdateNotification(newVersion: AppVersion) {
+		val manager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O
+			&& manager.getNotificationChannel(CHANNEL_ID) == null
+		) {
+			val channel = NotificationChannel(
+				CHANNEL_ID,
+				getString(R.string.application_update),
+				NotificationManager.IMPORTANCE_DEFAULT
+			)
+			manager.createNotificationChannel(channel)
+		}
+		val builder = NotificationCompat.Builder(this, CHANNEL_ID)
+		builder.setContentTitle(getString(R.string.app_update_available))
+		builder.setContentText(buildString {
+			append(newVersion.name)
+			append(" (")
+			append(FileSizeUtils.formatBytes(this@UpdateService, newVersion.apkSize))
+			append(')')
+		})
+		builder.setContentIntent(
+			PendingIntent.getActivity(
+				this,
+				NOTIFICATION_ID,
+				Intent(Intent.ACTION_VIEW, Uri.parse(newVersion.url)),
+				PendingIntent.FLAG_CANCEL_CURRENT
+			)
+		)
+		builder.setSmallIcon(R.drawable.ic_stat_update)
+		builder.setAutoCancel(true)
+		builder.setLargeIcon(BitmapFactory.decodeResource(resources, R.mipmap.ic_launcher))
+		manager.notify(NOTIFICATION_ID, builder.build())
+	}
+
+	companion object {
+
+		private const val NOTIFICATION_ID = 202
+		private const val CHANNEL_ID = "update"
+		private val PERIOD = TimeUnit.HOURS.toMillis(10)
+
+		fun start(context: Context) =
+			context.startService(Intent(context, UpdateService::class.java))
+
+		fun startIfRequired(context: Context) {
+			val lastUpdate = PreferenceManager.getDefaultSharedPreferences(context)
+				.getLong(context.getString(R.string.key_app_update), 0)
+			if (lastUpdate + PERIOD < System.currentTimeMillis()) {
+				start(context)
+			}
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/utils/ext/JsoupExt.kt

@@ -2,20 +2,32 @@ package org.koitharu.kotatsu.utils.ext
 
 import okhttp3.Response
 import okhttp3.internal.closeQuietly
+import org.json.JSONObject
 import org.jsoup.Jsoup
 import org.jsoup.nodes.Document
 import org.jsoup.nodes.Element
 
 fun Response.parseHtml(): Document {
-	val stream = body?.byteStream() ?: throw NullPointerException("Response body is null")
-	val charset = body!!.contentType()?.charset()?.name()
-	val doc = Jsoup.parse(
-		stream,
-		charset,
-		this.request.url.toString()
-	)
-	closeQuietly()
-	return doc
+	try {
+		val stream = body?.byteStream() ?: throw NullPointerException("Response body is null")
+		val charset = body!!.contentType()?.charset()?.name()
+		return Jsoup.parse(
+			stream,
+			charset,
+			request.url.toString()
+		)
+	} finally {
+		closeQuietly()
+	}
+}
+
+fun Response.parseJson(): JSONObject {
+	try {
+		val string = body?.string() ?: throw NullPointerException("Response body is null")
+		return JSONObject(string)
+	} finally {
+		closeQuietly()
+	}
 }
 
 fun Element.firstChild(): Element? = children().first()

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

@@ -1,8 +1,11 @@
-<!-- drawable/information_outline.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="#000" android:pathData="M11,9H13V7H11M12,20C7.59,20 4,16.41 4,12C4,7.59 7.59,4 12,4C16.41,4 20,7.59 20,12C20,16.41 16.41,20 12,20M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12A10,10 0 0,0 12,2M11,17H13V11H11V17Z" />
+<vector
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	android:width="24dp"
+	android:height="24dp"
+	android:tint="?attr/colorControlNormal"
+	android:viewportWidth="24"
+	android:viewportHeight="24">
+	<path
+		android:fillColor="#000"
+		android:pathData="M11,9H13V7H11M12,20C7.59,20 4,16.41 4,12C4,7.59 7.59,4 12,4C16.41,4 20,7.59 20,12C20,16.41 16.41,20 12,20M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12A10,10 0 0,0 12,2M11,17H13V11H11V17Z" />
 </vector>

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

@@ -104,4 +104,7 @@
 	<string name="external_storage">Внешнее хранилище</string>
     <string name="domain">Домен</string>
     <string name="_default">По умолчанию</string>
+    <string name="application_update">Обновление приложения</string>
+	<string name="app_update_available">Доступно обновление приложения</string>
+    <string name="about_app">О программе</string>
 </resources>

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

@@ -10,6 +10,7 @@
 	<string name="key_reading_history_clear">reading_history_clear</string>
 	<string name="key_grid_size">grid_size</string>
 	<string name="key_reader_switchers">reader_switchers</string>
+	<string name="key_app_update">app_update</string>
 
 	<string name="key_parser_domain">domain</string>
 	<string-array name="values_theme">

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

@@ -105,4 +105,7 @@
 	<string name="external_storage">External storage</string>
     <string name="domain">Domain</string>
     <string name="_default">Default</string>
+    <string name="application_update">Application update</string>
+	<string name="app_update_available">Application update is available</string>
+    <string name="about_app">About</string>
 </resources>

app/src/main/res/xml/pref_about.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+
+
+
+</PreferenceScreen>

app/src/main/res/xml/pref_headers.xml

@@ -22,4 +22,9 @@
 		android:icon="@drawable/ic_history"
 		android:title="@string/history_and_cache" />
 
+	<PreferenceScreen
+		android:fragment="org.koitharu.kotatsu.ui.settings.AboutSettingsFragment"
+		android:icon="@drawable/ic_information"
+		android:title="@string/about_app" />
+
 </PreferenceScreen>