Rewrite import and export subscriptions functionality using coroutines

app/build.gradle

@@ -9,14 +9,15 @@ plugins {
     alias libs.plugins.kotlin.compose
     alias libs.plugins.kotlin.kapt
     alias libs.plugins.kotlin.parcelize
+    alias libs.plugins.kotlinx.serialization
     alias libs.plugins.checkstyle
     alias libs.plugins.sonarqube
     alias libs.plugins.hilt
     alias libs.plugins.aboutlibraries
 }
 
 android {
-    compileSdk 34
+    compileSdk 35
     namespace 'org.schabi.newpipe'
 
     defaultConfig {
@@ -222,7 +223,6 @@ dependencies {
     implementation libs.androidx.fragment.compose
     implementation libs.androidx.lifecycle.livedata
     implementation libs.androidx.lifecycle.viewmodel
-    implementation libs.androidx.localbroadcastmanager
     implementation libs.androidx.media
     implementation libs.androidx.preference
     implementation libs.androidx.recyclerview
@@ -314,6 +314,9 @@ dependencies {
     // Scroll
     implementation libs.lazycolumnscrollbar
 
+    // Kotlinx Serialization
+    implementation libs.kotlinx.serialization.json
+
 /** Debugging **/
     // Memory leak detection
     debugImplementation libs.leakcanary.object.watcher

app/proguard-rules.pro

@@ -27,3 +27,18 @@
 
 ## For some reason NotificationModeConfigFragment wasn't kept (only referenced in a preference xml)
 -keep class org.schabi.newpipe.settings.notifications.** { *; }
+
+## Keep Kotlinx Serialization classes
+-keepclassmembers class kotlinx.serialization.json.** {
+    *** Companion;
+}
+-keepclasseswithmembers class kotlinx.serialization.json.** {
+    kotlinx.serialization.KSerializer serializer(...);
+}
+-keep,includedescriptorclasses class org.schabi.newpipe.**$$serializer { *; }
+-keepclassmembers class org.schabi.newpipe.** {
+    *** Companion;
+}
+-keepclasseswithmembers class org.schabi.newpipe.** {
+    kotlinx.serialization.KSerializer serializer(...);
+}

app/src/main/AndroidManifest.xml

@@ -9,6 +9,7 @@
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_DATA_SYNC" />
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
 
     <!-- We need to be able to open links in the browser on API 30+ -->
@@ -87,8 +88,10 @@
             android:exported="false"
             android:label="@string/title_activity_about" />
 
-        <service android:name=".local.subscription.services.SubscriptionsImportService" />
-        <service android:name=".local.subscription.services.SubscriptionsExportService" />
+        <service
+            android:name="androidx.work.impl.foreground.SystemForegroundService"
+            android:foregroundServiceType="dataSync"
+            tools:node="merge" />
         <service android:name=".local.feed.service.FeedLoadService" />
 
         <activity

app/src/main/java/org/schabi/newpipe/database/subscription/SubscriptionDAO.kt

@@ -90,7 +90,7 @@ abstract class SubscriptionDAO : BasicDAO<SubscriptionEntity> {
     internal abstract fun silentInsertAllInternal(entities: List<SubscriptionEntity>): List<Long>
 
     @Transaction
-    open fun upsertAll(entities: List<SubscriptionEntity>): List<SubscriptionEntity> {
+    open fun upsertAll(entities: List<SubscriptionEntity>) {
         val insertUidList = silentInsertAllInternal(entities)
 
         insertUidList.forEachIndexed { index: Int, uidFromInsert: Long ->
@@ -106,7 +106,5 @@ abstract class SubscriptionDAO : BasicDAO<SubscriptionEntity> {
                 update(entity)
             }
         }
-
-        return entities
     }
 }

app/src/main/java/org/schabi/newpipe/local/subscription/ImportConfirmationDialog.java

@@ -3,47 +3,64 @@
 import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
 
 import android.app.Dialog;
-import android.content.Intent;
 import android.os.Bundle;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
+import androidx.core.os.BundleCompat;
 import androidx.fragment.app.DialogFragment;
 import androidx.fragment.app.Fragment;
+import androidx.work.Constraints;
+import androidx.work.ExistingWorkPolicy;
+import androidx.work.NetworkType;
+import androidx.work.OneTimeWorkRequest;
+import androidx.work.OutOfQuotaPolicy;
+import androidx.work.WorkManager;
 
-import com.evernote.android.state.State;
 import com.livefront.bridge.Bridge;
 
 import org.schabi.newpipe.R;
+import org.schabi.newpipe.local.subscription.workers.SubscriptionImportInput;
+import org.schabi.newpipe.local.subscription.workers.SubscriptionImportWorker;
 
 public class ImportConfirmationDialog extends DialogFragment {
-    @State
-    protected Intent resultServiceIntent;
+    private static final String INPUT = "input";
 
-    public static void show(@NonNull final Fragment fragment,
-                            @NonNull final Intent resultServiceIntent) {
-        final ImportConfirmationDialog confirmationDialog = new ImportConfirmationDialog();
-        confirmationDialog.setResultServiceIntent(resultServiceIntent);
+    public static void show(@NonNull final Fragment fragment, final SubscriptionImportInput input) {
+        final var confirmationDialog = new ImportConfirmationDialog();
+        final var arguments = new Bundle();
+        arguments.putParcelable(INPUT, input);
+        confirmationDialog.setArguments(arguments);
         confirmationDialog.show(fragment.getParentFragmentManager(), null);
     }
 
-    public void setResultServiceIntent(final Intent resultServiceIntent) {
-        this.resultServiceIntent = resultServiceIntent;
-    }
-
     @NonNull
     @Override
     public Dialog onCreateDialog(@Nullable final Bundle savedInstanceState) {
-        assureCorrectAppLanguage(getContext());
-        return new AlertDialog.Builder(requireContext())
+        final var context = requireContext();
+        assureCorrectAppLanguage(context);
+        return new AlertDialog.Builder(context)
                 .setMessage(R.string.import_network_expensive_warning)
                 .setCancelable(true)
                 .setNegativeButton(R.string.cancel, null)
                 .setPositiveButton(R.string.ok, (dialogInterface, i) -> {
-                    if (resultServiceIntent != null && getContext() != null) {
-                        getContext().startService(resultServiceIntent);
-                    }
+                    final var constraints = new Constraints.Builder()
+                            .setRequiredNetworkType(NetworkType.CONNECTED)
+                            .build();
+                    final var input = BundleCompat.getParcelable(requireArguments(), INPUT,
+                            SubscriptionImportInput.class);
+
+                    final var req = new OneTimeWorkRequest.Builder(SubscriptionImportWorker.class)
+                            .setInputData(input.toData())
+                            .setExpedited(OutOfQuotaPolicy.RUN_AS_NON_EXPEDITED_WORK_REQUEST)
+                            .setConstraints(constraints)
+                            .build();
+
+                    WorkManager.getInstance(context)
+                            .enqueueUniqueWork(SubscriptionImportWorker.WORK_NAME,
+                                    ExistingWorkPolicy.APPEND_OR_REPLACE, req);
+
                     dismiss();
                 })
                 .create();
@@ -53,10 +70,6 @@ public Dialog onCreateDialog(@Nullable final Bundle savedInstanceState) {
     public void onCreate(@Nullable final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        if (resultServiceIntent == null) {
-            throw new IllegalStateException("Result intent is null");
-        }
-
         Bridge.restoreInstanceState(this, savedInstanceState);
     }
 

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionFragment.kt

@@ -3,7 +3,6 @@ package org.schabi.newpipe.local.subscription
 import android.app.Activity
 import android.content.Context
 import android.content.DialogInterface
-import android.content.Intent
 import android.os.Bundle
 import android.os.Parcelable
 import android.view.LayoutInflater
@@ -49,11 +48,8 @@ import org.schabi.newpipe.local.subscription.item.FeedGroupCarouselItem
 import org.schabi.newpipe.local.subscription.item.GroupsHeader
 import org.schabi.newpipe.local.subscription.item.Header
 import org.schabi.newpipe.local.subscription.item.ImportSubscriptionsHintPlaceholderItem
-import org.schabi.newpipe.local.subscription.services.SubscriptionsExportService
-import org.schabi.newpipe.local.subscription.services.SubscriptionsImportService
-import org.schabi.newpipe.local.subscription.services.SubscriptionsImportService.KEY_MODE
-import org.schabi.newpipe.local.subscription.services.SubscriptionsImportService.KEY_VALUE
-import org.schabi.newpipe.local.subscription.services.SubscriptionsImportService.PREVIOUS_EXPORT_MODE
+import org.schabi.newpipe.local.subscription.workers.SubscriptionExportWorker
+import org.schabi.newpipe.local.subscription.workers.SubscriptionImportInput
 import org.schabi.newpipe.streams.io.NoFileManagerSafeGuard
 import org.schabi.newpipe.streams.io.StoredFileHelper
 import org.schabi.newpipe.ui.emptystate.setEmptyStateComposable
@@ -224,21 +220,17 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
     }
 
     private fun requestExportResult(result: ActivityResult) {
-        if (result.data != null && result.resultCode == Activity.RESULT_OK) {
-            activity.startService(
-                Intent(activity, SubscriptionsExportService::class.java)
-                    .putExtra(SubscriptionsExportService.KEY_FILE_PATH, result.data?.data)
-            )
+        val data = result.data?.data
+        if (data != null && result.resultCode == Activity.RESULT_OK) {
+            SubscriptionExportWorker.schedule(activity, data)
         }
     }
 
     private fun requestImportResult(result: ActivityResult) {
-        if (result.data != null && result.resultCode == Activity.RESULT_OK) {
+        val data = result.data?.dataString
+        if (data != null && result.resultCode == Activity.RESULT_OK) {
             ImportConfirmationDialog.show(
-                this,
-                Intent(activity, SubscriptionsImportService::class.java)
-                    .putExtra(KEY_MODE, PREVIOUS_EXPORT_MODE)
-                    .putExtra(KEY_VALUE, result.data?.data)
+                this, SubscriptionImportInput.PreviousExportMode(data)
             )
         }
     }

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionManager.kt

@@ -1,7 +1,6 @@
 package org.schabi.newpipe.local.subscription
 
 import android.content.Context
-import android.util.Pair
 import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
 import io.reactivex.rxjava3.core.Completable
 import io.reactivex.rxjava3.core.Flowable
@@ -48,23 +47,16 @@ class SubscriptionManager(context: Context) {
         }
     }
 
-    fun upsertAll(infoList: List<Pair<ChannelInfo, List<ChannelTabInfo>>>): List<SubscriptionEntity> {
-        val listEntities = subscriptionTable.upsertAll(
-            infoList.map { SubscriptionEntity.from(it.first) }
-        )
+    fun upsertAll(infoList: List<Pair<ChannelInfo, ChannelTabInfo>>) {
+        val listEntities = infoList.map { SubscriptionEntity.from(it.first) }
+        subscriptionTable.upsertAll(listEntities)
 
         database.runInTransaction {
             infoList.forEachIndexed { index, info ->
-                info.second.forEach {
-                    feedDatabaseManager.upsertAll(
-                        listEntities[index].uid,
-                        it.relatedItems.filterIsInstance<StreamInfoItem>()
-                    )
-                }
+                val streams = info.second.relatedItems.filterIsInstance<StreamInfoItem>()
+                feedDatabaseManager.upsertAll(listEntities[index].uid, streams)
             }
         }
-
-        return listEntities
     }
 
     fun updateChannelInfo(info: ChannelInfo): Completable =

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionsImportFragment.java

@@ -1,10 +1,6 @@
 package org.schabi.newpipe.local.subscription;
 
 import static org.schabi.newpipe.extractor.subscription.SubscriptionExtractor.ContentSource.CHANNEL_URL;
-import static org.schabi.newpipe.local.subscription.services.SubscriptionsImportService.CHANNEL_URL_MODE;
-import static org.schabi.newpipe.local.subscription.services.SubscriptionsImportService.INPUT_STREAM_MODE;
-import static org.schabi.newpipe.local.subscription.services.SubscriptionsImportService.KEY_MODE;
-import static org.schabi.newpipe.local.subscription.services.SubscriptionsImportService.KEY_VALUE;
 
 import android.app.Activity;
 import android.content.Intent;
@@ -37,7 +33,7 @@
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.subscription.SubscriptionExtractor;
-import org.schabi.newpipe.local.subscription.services.SubscriptionsImportService;
+import org.schabi.newpipe.local.subscription.workers.SubscriptionImportInput;
 import org.schabi.newpipe.streams.io.NoFileManagerSafeGuard;
 import org.schabi.newpipe.streams.io.StoredFileHelper;
 import org.schabi.newpipe.util.Constants;
@@ -168,10 +164,8 @@ private void onImportClicked() {
     }
 
     public void onImportUrl(final String value) {
-        ImportConfirmationDialog.show(this, new Intent(activity, SubscriptionsImportService.class)
-                .putExtra(KEY_MODE, CHANNEL_URL_MODE)
-                .putExtra(KEY_VALUE, value)
-                .putExtra(Constants.KEY_SERVICE_ID, currentServiceId));
+        ImportConfirmationDialog.show(this,
+                new SubscriptionImportInput.ChannelUrlMode(currentServiceId, value));
     }
 
     public void onImportFile() {
@@ -186,16 +180,10 @@ public void onImportFile() {
     }
 
     private void requestImportFileResult(final ActivityResult result) {
-        if (result.getData() == null) {
-            return;
-        }
-
-        if (result.getResultCode() == Activity.RESULT_OK && result.getData().getData() != null) {
+        final String data = result.getData() != null ? result.getData().getDataString() : null;
+        if (result.getResultCode() == Activity.RESULT_OK && data != null) {
             ImportConfirmationDialog.show(this,
-                    new Intent(activity, SubscriptionsImportService.class)
-                            .putExtra(KEY_MODE, INPUT_STREAM_MODE)
-                            .putExtra(KEY_VALUE, result.getData().getData())
-                            .putExtra(Constants.KEY_SERVICE_ID, currentServiceId));
+                    new SubscriptionImportInput.InputStreamMode(currentServiceId, data));
         }
     }