From 0476bf7ceece034a927d1df6099d8b33036f8a9b Mon Sep 17 00:00:00 2001
From: Kingkor Roy Tirtho <krtirtho@gmail.com>
Date: Sun, 14 Aug 2022 15:44:54 +0600
Subject: [PATCH] feat: add download multi tracks support for mobile platform

---
 .fvm/fvm_config.json                     |  4 ++
 .gitignore                               |  1 +
 android/app/build.gradle                 |  2 +-
 android/app/src/main/AndroidManifest.xml |  6 +-
 lib/main.dart                            | 14 +++-
 lib/provider/Downloader.dart             | 86 +++++++++++++++---------
 6 files changed, 78 insertions(+), 35 deletions(-)
 create mode 100644 .fvm/fvm_config.json

diff --git a/.fvm/fvm_config.json b/.fvm/fvm_config.json
new file mode 100644
index 00000000..5d1bc03b
--- /dev/null
+++ b/.fvm/fvm_config.json
@@ -0,0 +1,4 @@
+{
+  "flutterSdkVersion": "3.0.5",
+  "flavors": {}
+}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index cd61c4e3..b52add87 100644
--- a/.gitignore
+++ b/.gitignore
@@ -75,3 +75,4 @@ dist
 appimage-build
 
 android/key.properties
+.fvm/flutter_sdk
\ No newline at end of file
diff --git a/android/app/build.gradle b/android/app/build.gradle
index ec24101b..111b8978 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -50,7 +50,7 @@ android {
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "oss.krtirtho.spotube"
-        minSdkVersion flutter.minSdkVersion
+        minSdkVersion 19
         targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
index ad4e9b0a..08a05c44 100644
--- a/android/app/src/main/AndroidManifest.xml
+++ b/android/app/src/main/AndroidManifest.xml
@@ -15,7 +15,7 @@
   </queries>
 
   <application android:label="Spotube" android:name="${applicationName}" android:icon="@mipmap/ic_launcher" android:usesCleartextTraffic="true" android:requestLegacyExternalStorage="true">
-    <activity android:name="com.ryanheise.audioservice.AudioServiceActivity" android:exported="true" android:launchMode="singleTop" android:theme="@style/LaunchTheme" android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode" android:hardwareAccelerated="true" android:windowSoftInputMode="adjustResize" >
+    <activity android:name="com.ryanheise.audioservice.AudioServiceActivity" android:exported="true" android:launchMode="singleTop" android:theme="@style/LaunchTheme" android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode" android:hardwareAccelerated="true" android:windowSoftInputMode="adjustResize">
       <!-- Specifies an Android theme to apply to this Activity as soon as
                  the Android process has started. This theme is visible to the user
                  while the Flutter UI initializes. After that, this theme continues
@@ -28,6 +28,10 @@
 
     </activity>
 
+    <provider android:name="vn.hunghd.flutterdownloader.DownloadedFileProvider" android:authorities="${applicationId}.flutter_downloader.provider" android:exported="false" android:grantUriPermissions="true">
+      <meta-data android:name="android.support.FILE_PROVIDER_PATHS" android:resource="@xml/provider_paths" />
+    </provider>
+
     <service android:name="com.ryanheise.audioservice.AudioService" android:exported="false">
       <intent-filter>
         <action android:name="android.media.browse.MediaBrowserService" />
diff --git a/lib/main.dart b/lib/main.dart
index 287a7a95..7dcda878 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -2,7 +2,9 @@ import 'dart:convert';
 
 import 'package:audio_service/audio_service.dart';
 import 'package:bitsdojo_window/bitsdojo_window.dart';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_downloader/flutter_downloader.dart';
 import 'package:flutter_hooks/flutter_hooks.dart';
 import 'package:go_router/go_router.dart';
 import 'package:hive_flutter/hive_flutter.dart';
@@ -26,8 +28,8 @@ void main() async {
   Hive.registerAdapter(CacheTrackAdapter());
   Hive.registerAdapter(CacheTrackEngagementAdapter());
   Hive.registerAdapter(CacheTrackSkipSegmentAdapter());
+  WidgetsFlutterBinding.ensureInitialized();
   if (kIsDesktop) {
-    WidgetsFlutterBinding.ensureInitialized();
     doWhenWindowReady(() async {
       final localStorage = await SharedPreferences.getInstance();
       final rawSize = localStorage.getString(LocalStorageKeys.windowSizeInfo);
@@ -44,6 +46,11 @@ void main() async {
       }
       appWindow.show();
     });
+  } else {
+    await FlutterDownloader.initialize(
+      debug: kDebugMode,
+      ignoreSsl: true,
+    );
   }
   MobileAudioService? audioServiceHandler;
   runApp(ProviderScope(
@@ -102,8 +109,13 @@ class _SpotubeState extends ConsumerState<Spotube> with WidgetsBindingObserver {
     super.initState();
     SharedPreferences.getInstance().then(((value) => localStorage = value));
     WidgetsBinding.instance.addObserver(this);
+    FlutterDownloader.registerCallback(downloadCallback);
   }
 
+  @pragma('vm:entry-point')
+  static void downloadCallback(
+      String id, DownloadTaskStatus status, int progress) {}
+
   @override
   void dispose() {
     WidgetsBinding.instance.removeObserver(this);
diff --git a/lib/provider/Downloader.dart b/lib/provider/Downloader.dart
index 16537b17..8a4c7222 100644
--- a/lib/provider/Downloader.dart
+++ b/lib/provider/Downloader.dart
@@ -2,12 +2,14 @@ import 'dart:async';
 import 'dart:io';
 
 import 'package:flutter/widgets.dart';
+import 'package:flutter_downloader/flutter_downloader.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:queue/queue.dart';
 import 'package:path/path.dart' as path;
 import 'package:spotube/models/SpotubeTrack.dart';
 import 'package:spotube/provider/UserPreferences.dart';
 import 'package:spotube/provider/YouTube.dart';
+import 'package:spotube/utils/platform.dart';
 import 'package:youtube_explode_dart/youtube_explode_dart.dart';
 
 Queue _queueInstance = Queue(delay: const Duration(seconds: 5));
@@ -27,44 +29,64 @@ class Downloader with ChangeNotifier {
   int currentlyRunning = 0;
   Set<String> inQueue = {};
 
-  void addToQueue(SpotubeTrack track) {
-    if (inQueue.contains(track.id!)) return;
+  void addToQueue(SpotubeTrack track) async {
     currentlyRunning++;
     inQueue.add(track.id!);
     notifyListeners();
-    _queue.add(() async {
-      try {
-        final file =
-            File(path.join(downloadPath, '${track.ytTrack.title}.mp3'));
-        if (file.existsSync() && await onFileExists?.call(track) != true) {
-          return;
-        }
-        file.createSync(recursive: true);
-        StreamManifest manifest =
-            await yt.videos.streamsClient.getManifest(track.ytTrack.url);
-        final audioStream = yt.videos.streamsClient
-            .get(
-              manifest.audioOnly
-                  .where((audio) => audio.codec.mimeType == "audio/mp4")
-                  .withHighestBitrate(),
-            )
-            .asBroadcastStream();
+    final filename = '${track.ytTrack.title}.mp3';
+    if (kIsMobile) {
+      final url =
+          ((await yt.videos.streamsClient.getManifest(track.ytTrack.url)))
+              .audioOnly
+              .where((audio) => audio.codec.mimeType == "audio/mp4")
+              .withHighestBitrate()
+              .url;
+      await FlutterDownloader.enqueue(
+        savedDir: downloadPath,
+        url: url.toString(),
+        fileName: filename,
+        openFileFromNotification: true,
+        showNotification: true,
+      );
+    } else {
+      if (inQueue.contains(track.id!)) return;
+      _queue.add(() async {
+        try {
+          final file = File(path.join(downloadPath, filename));
+          if (file.existsSync() && await onFileExists?.call(track) != true) {
+            return;
+          }
+          file.createSync(recursive: true);
+          StreamManifest manifest =
+              await yt.videos.streamsClient.getManifest(track.ytTrack.url);
+          final audioStream = yt.videos.streamsClient
+              .get(
+                manifest.audioOnly
+                    .where((audio) => audio.codec.mimeType == "audio/mp4")
+                    .withHighestBitrate(),
+              )
+              .asBroadcastStream();
 
-        IOSink outputFileStream = file.openWrite();
-        await audioStream.pipe(outputFileStream);
-        await outputFileStream.flush();
-      } finally {
-        currentlyRunning--;
-        inQueue.remove(track.id);
-        notifyListeners();
-      }
-    });
+          IOSink outputFileStream = file.openWrite();
+          await audioStream.pipe(outputFileStream);
+          await outputFileStream.flush();
+        } finally {
+          currentlyRunning--;
+          inQueue.remove(track.id);
+          notifyListeners();
+        }
+      });
+    }
   }
 
-  cancel() {
-    _queue.cancel();
-    _queueInstance = Queue();
-    _queue = _queueInstance;
+  cancelAll() {
+    if (kIsMobile) {
+      FlutterDownloader.cancelAll();
+    } else {
+      _queue.cancel();
+      _queueInstance = Queue();
+      _queue = _queueInstance;
+    }
   }
 }