Fix outdated download task delete failed.

lib/local_storage/sqflite_localpodcast.dart

@@ -1,5 +1,3 @@
-import 'dart:io';
-
 import 'package:sqflite/sqflite.dart';
 import 'dart:async';
 import 'package:path/path.dart';
@@ -861,12 +859,9 @@ class DBHelper {
   //  }
   //  return episodes;
   //}
-  Future<List<EpisodeBrief>> getOutdatedEpisode(int days) async {
+  Future<List<EpisodeBrief>> getOutdatedEpisode(int deadline) async {
     var dbClient = await database;
     List<EpisodeBrief> episodes = [];
-    if (days > 0) {
-      int deadline =
-          DateTime.now().subtract(Duration(days: days)).millisecondsSinceEpoch;
     List<Map> list = await dbClient
         .rawQuery("""SELECT E.title, E.enclosure_url, E.enclosure_length, 
         E.milliseconds, P.title as feed_title, E.duration, E.explicit, E.liked, 
@@ -891,7 +886,6 @@ class DBHelper {
           list[x]['is_new'],
           list[x]['skip_seconds']));
     }
-    }
     return episodes;
   }
 
@@ -1101,26 +1095,35 @@ class DBHelper {
   Future<int> saveDownloaded(String url, String id) async {
     var dbClient = await database;
     int milliseconds = DateTime.now().millisecondsSinceEpoch;
-    int count = await dbClient.rawUpdate(
+    int count;
+    await dbClient.transaction((txn) async {
+      count = await txn.rawUpdate(
           "UPDATE Episodes SET downloaded = ?, download_date = ? WHERE enclosure_url = ?",
           [id, milliseconds, url]);
+    });
     return count;
   }
 
   Future<int> saveMediaId(String url, String path, String id, int size) async {
     var dbClient = await database;
     int milliseconds = DateTime.now().millisecondsSinceEpoch;
-    int count = await dbClient.rawUpdate(
+    int count;
+    await dbClient.transaction((txn) async {
+      count = await txn.rawUpdate(
           "UPDATE Episodes SET enclosure_length = ?, media_id = ?, download_date = ?, downloaded = ? WHERE enclosure_url = ?",
           [size, path, milliseconds, id, url]);
+    });
     return count;
   }
 
   Future<int> delDownloaded(String url) async {
     var dbClient = await database;
-    int count = await dbClient.rawUpdate(
+    int count;
+    await dbClient.transaction((txn) async {
+      count = await txn.rawUpdate(
           "UPDATE Episodes SET downloaded = 'ND', media_id = ? WHERE enclosure_url = ?",
           [url, url]);
+    });
     print('Deleted ' + url);
     return count;
   }

lib/state/download_state.dart

@@ -225,7 +225,6 @@ class DownloadState extends ChangeNotifier {
   }
 
   EpisodeTask episodeToTask(EpisodeBrief episode) {
-    print(_episodeTasks.first.episode.description);
     return _episodeTasks
         .firstWhere((task) => task.episode.enclosureUrl == episode.enclosureUrl,
             orElse: () {
@@ -322,8 +321,7 @@ class DownloadState extends ChangeNotifier {
   }
 
   _removeTask(EpisodeBrief episode) {
-    _episodeTasks.removeWhere(
-        (element) => element.episode.enclosureUrl == episode.enclosureUrl);
+    _episodeTasks.removeWhere((element) => element.episode == episode);
   }
 
   _autoDelete() async {
@@ -333,11 +331,21 @@ class DownloadState extends ChangeNotifier {
     if (autoDelete == 0)
       await autoDeleteStorage.saveInt(30);
     else if (autoDelete > 0) {
-      List<EpisodeBrief> episodes =
-          await dbHelper.getOutdatedEpisode(autoDelete);
+      int deadline = DateTime.now()
+          .subtract(Duration(days: autoDelete))
+          .millisecondsSinceEpoch;
+      List<EpisodeBrief> episodes = await dbHelper.getOutdatedEpisode(deadline);
       if (episodes.length > 0) {
-        await Future.forEach(episodes, (episode) => delTask(episode));
-      }
+        await Future.forEach(
+            episodes, (episode) async => await delTask(episode));
+      }
+      final tasks = await FlutterDownloader.loadTasksWithRawQuery(
+          query:
+              'SELECT * FROM task WHERE time_created < $deadline AND status = 3');
+      await Future.forEach(
+          tasks,
+          (task) async => FlutterDownloader.remove(
+              taskId: task.taskId, shouldDeleteContent: true));
     }
   }
 }

lib/type/episodebrief.dart

@@ -1,3 +1,5 @@
+import 'dart:ui';
+
 import 'package:intl/intl.dart';
 import 'package:audio_service/audio_service.dart';
 
@@ -89,5 +91,5 @@ class EpisodeBrief {
       episode.enclosureUrl == enclosureUrl;
 
   @override
-  int get hashCode => enclosureUrl.hashCode + title.hashCode;
+  int get hashCode => hashValues(enclosureUrl, title);
 }

lib/type/podcastlocal.dart

@@ -1,3 +1,5 @@
+import 'dart:ui';
+
 class PodcastLocal {
   final String title;
   final String imageUrl;
@@ -24,5 +26,5 @@ class PodcastLocal {
       podcastLocal.id == id;
 
   @override
-  int get hashCode => id.hashCode + rssUrl.hashCode;
+  int get hashCode => hashValues(id, rssUrl);
 }