Refactor services

src/main/kotlin/nya/kitsunyan/foxydroid/MainApplication.kt

@@ -174,9 +174,9 @@ class MainApplication: Application() {
         Database.RepositoryAdapter.put(it.copy(lastModified = "", entityTag = ""))
       }
     }
-    Connection<SyncService.Binder>(SyncService::class.java, onBind = {
-      it.binder.sync(SyncService.SyncRequest.FORCE)
-      it.connection.unbind(this)
+    Connection(SyncService::class.java, onBind = { connection, binder ->
+      binder.sync(SyncService.SyncRequest.FORCE)
+      connection.unbind(this)
     }).bind(this)
   }
 

src/main/kotlin/nya/kitsunyan/foxydroid/screen/EditRepositoryFragment.kt

@@ -80,7 +80,7 @@ class EditRepositoryFragment(): Fragment() {
   private var saveMenuItem: MenuItem? = null
   private var layout: Layout? = null
 
-  private val syncConnection = Connection<SyncService.Binder>(SyncService::class.java)
+  private val syncConnection = Connection(SyncService::class.java)
   private var repositoriesDisposable: Disposable? = null
   private var checkDisposable: Disposable? = null
 

src/main/kotlin/nya/kitsunyan/foxydroid/screen/ProductFragment.kt

@@ -72,10 +72,10 @@ class ProductFragment(): Fragment(), ProductAdapter.Callbacks {
 
   private var productDisposable: Disposable? = null
   private var downloadDisposable: Disposable? = null
-  private val downloadConnection = Connection<DownloadService.Binder>(DownloadService::class.java, onBind = {
-    updateDownloadState(it.binder.getState(packageName))
-    downloadDisposable = it.binder.events(packageName).subscribe { updateDownloadState(it) }
-  }, onUnbind = {
+  private val downloadConnection = Connection(DownloadService::class.java, onBind = { _, binder ->
+    updateDownloadState(binder.getState(packageName))
+    downloadDisposable = binder.events(packageName).subscribe { updateDownloadState(it) }
+  }, onUnbind = { _, _ ->
     downloadDisposable?.dispose()
     downloadDisposable = null
   })

src/main/kotlin/nya/kitsunyan/foxydroid/screen/RepositoriesFragment.kt

@@ -20,7 +20,7 @@ import nya.kitsunyan.foxydroid.utility.Utils
 class RepositoriesFragment: Fragment(), CursorOwner.Callback {
   private var recyclerView: RecyclerView? = null
 
-  private val syncConnection = Connection<SyncService.Binder>(SyncService::class.java)
+  private val syncConnection = Connection(SyncService::class.java)
 
   override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
     return inflater.inflate(R.layout.fragment, container, false).apply {

src/main/kotlin/nya/kitsunyan/foxydroid/screen/RepositoryFragment.kt

@@ -43,7 +43,7 @@ class RepositoryFragment(): Fragment() {
 
   private var layout: LinearLayout? = null
 
-  private val syncConnection = Connection<SyncService.Binder>(SyncService::class.java)
+  private val syncConnection = Connection(SyncService::class.java)
   private var repositoryDisposable: Disposable? = null
 
   override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {

src/main/kotlin/nya/kitsunyan/foxydroid/screen/TabsFragment.kt

@@ -80,7 +80,7 @@ class TabsFragment: Fragment() {
   private var category = ""
   private var order = ProductItem.Order.NAME
 
-  private val syncConnection = Connection<SyncService.Binder>(SyncService::class.java, onBind = {
+  private val syncConnection = Connection(SyncService::class.java, onBind = { _, _ ->
     viewPager?.let {
       val source = ProductsFragment.Source.values()[it.currentItem]
       updateUpdateNotificationBlocker(source)

src/main/kotlin/nya/kitsunyan/foxydroid/service/Connection.kt

@@ -1,32 +1,33 @@
 package nya.kitsunyan.foxydroid.service
 
-import android.app.Service
 import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
 import android.content.ServiceConnection
 import android.os.IBinder
 
-class Connection<T: IBinder>(private val serviceClass: Class<out Service>,
-  private val onBind: ((Event<T>) -> Unit)? = null,
-  private val onUnbind: ((Event<T>) -> Unit)? = null): ServiceConnection {
-  class Event<T: IBinder>(val connection: Connection<T>, val binder: T)
-
-  var binder: T? = null
+class Connection<B: IBinder, S: ConnectionService<B>>(private val serviceClass: Class<S>,
+  private val onBind: ((Connection<B, S>, B) -> Unit)? = null,
+  private val onUnbind: ((Connection<B, S>, B) -> Unit)? = null): ServiceConnection {
+  var binder: B? = null
     private set
 
+  private fun handleUnbind() {
+    binder?.let {
+      binder = null
+      onUnbind?.invoke(this, it)
+    }
+  }
+
   override fun onServiceConnected(componentName: ComponentName, binder: IBinder) {
     @Suppress("UNCHECKED_CAST")
-    binder as T
+    binder as B
     this.binder = binder
-    onBind?.invoke(Event(this, binder))
+    onBind?.invoke(this, binder)
   }
 
   override fun onServiceDisconnected(componentName: ComponentName) {
-    binder?.let {
-      binder = null
-      onUnbind?.invoke(Event(this, it))
-    }
+    handleUnbind()
   }
 
   fun bind(context: Context) {
@@ -35,9 +36,6 @@ class Connection<T: IBinder>(private val serviceClass: Class<out Service>,
 
   fun unbind(context: Context) {
     context.unbindService(this)
-    binder?.let {
-      binder = null
-      onUnbind?.invoke(Event(this, it))
-    }
+    handleUnbind()
   }
 }

src/main/kotlin/nya/kitsunyan/foxydroid/service/ConnectionService.kt

@@ -0,0 +1,19 @@
+package nya.kitsunyan.foxydroid.service
+
+import android.app.Service
+import android.content.Intent
+import android.os.IBinder
+import nya.kitsunyan.foxydroid.utility.extension.android.Android
+
+abstract class ConnectionService<T: IBinder>: Service() {
+  abstract override fun onBind(intent: Intent): T
+
+  fun startSelf() {
+    val intent = Intent(this, this::class.java)
+    if (Android.sdk(26)) {
+      startForegroundService(intent)
+    } else {
+      startService(intent)
+    }
+  }
+}

src/main/kotlin/nya/kitsunyan/foxydroid/service/DownloadService.kt

@@ -3,7 +3,6 @@ package nya.kitsunyan.foxydroid.service
 import android.app.NotificationChannel
 import android.app.NotificationManager
 import android.app.PendingIntent
-import android.app.Service
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
@@ -31,7 +30,7 @@ import java.security.MessageDigest
 import java.util.concurrent.TimeUnit
 import kotlin.math.*
 
-class DownloadService: Service() {
+class DownloadService: ConnectionService<DownloadService.Binder>() {
   companion object {
     private const val ACTION_OPEN = "${BuildConfig.APPLICATION_ID}.intent.action.OPEN"
     private const val ACTION_INSTALL = "${BuildConfig.APPLICATION_ID}.intent.action.INSTALL"
@@ -326,7 +325,7 @@ class DownloadService: Service() {
         val task = tasks.removeAt(0)
         if (!started) {
           started = true
-          startAnyService(Intent(this, this::class.java))
+          startSelf()
         }
         val initialState = State.Connecting(task.packageName, task.name)
         stateNotificationBuilder.setWhen(System.currentTimeMillis())

src/main/kotlin/nya/kitsunyan/foxydroid/service/SyncService.kt

@@ -3,7 +3,6 @@ package nya.kitsunyan.foxydroid.service
 import android.app.NotificationChannel
 import android.app.NotificationManager
 import android.app.PendingIntent
-import android.app.Service
 import android.app.job.JobParameters
 import android.app.job.JobService
 import android.content.Intent
@@ -35,7 +34,7 @@ import java.lang.ref.WeakReference
 import java.util.concurrent.TimeUnit
 import kotlin.math.*
 
-class SyncService: Service() {
+class SyncService: ConnectionService<SyncService.Binder>() {
   companion object {
     private const val ACTION_CANCEL = "${BuildConfig.APPLICATION_ID}.intent.action.CANCEL"
 
@@ -77,6 +76,7 @@ class SyncService: Service() {
       handleNextTask(cancelledTask?.hasUpdates == true)
       if (request != SyncRequest.AUTO && started == Started.AUTO) {
         started = Started.MANUAL
+        startSelf()
         handleSetStarted()
         currentTask?.lastState?.let { publishForegroundState(true, it) }
       }
@@ -273,7 +273,6 @@ class SyncService: Service() {
   }
 
   private fun handleSetStarted() {
-    startAnyService(Intent(this, this::class.java))
     stateNotificationBuilder.setWhen(System.currentTimeMillis())
   }
 
@@ -287,6 +286,7 @@ class SyncService: Service() {
           val newStarted = if (task.manual || lastStarted == Started.MANUAL) Started.MANUAL else Started.AUTO
           started = newStarted
           if (newStarted == Started.MANUAL && lastStarted != Started.MANUAL) {
+            startSelf()
             handleSetStarted()
           }
           val initialState = State.Connecting(repository.name)
@@ -379,22 +379,22 @@ class SyncService: Service() {
   class Job: JobService() {
     private var syncParams: JobParameters? = null
     private var syncDisposable: Disposable? = null
-    private val syncConnection = Connection<Binder>(SyncService::class.java, onBind = {
-      syncDisposable = it.binder.finish.subscribe { _ ->
+    private val syncConnection = Connection(SyncService::class.java, onBind = { connection, binder ->
+      syncDisposable = binder.finish.subscribe {
         val params = syncParams
         if (params != null) {
           syncParams = null
           syncDisposable?.dispose()
           syncDisposable = null
-          it.connection.unbind(this)
+          connection.unbind(this)
           jobFinished(params, false)
         }
       }
-      it.binder.sync(SyncRequest.AUTO)
-    }, onUnbind = {
+      binder.sync(SyncRequest.AUTO)
+    }, onUnbind = { _, binder ->
       syncDisposable?.dispose()
       syncDisposable = null
-      it.binder.cancelAuto()
+      binder.cancelAuto()
       val params = syncParams
       if (params != null) {
         syncParams = null

src/main/kotlin/nya/kitsunyan/foxydroid/utility/extension/Android.kt

@@ -3,7 +3,6 @@ package nya.kitsunyan.foxydroid.utility.extension.android
 
 import android.app.NotificationManager
 import android.content.Context
-import android.content.Intent
 import android.content.pm.PackageInfo
 import android.content.pm.Signature
 import android.database.Cursor
@@ -25,14 +24,6 @@ fun SQLiteDatabase.execWithResult(sql: String) {
 val Context.notificationManager: NotificationManager
   get() = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
 
-fun Context.startAnyService(intent: Intent) {
-  if (Android.sdk(26)) {
-    startForegroundService(intent)
-  } else {
-    startService(intent)
-  }
-}
-
 val PackageInfo.versionCodeCompat: Long
   get() = if (Android.sdk(28)) longVersionCode else @Suppress("DEPRECATION") versionCode.toLong()