init - still figuring out download/install

2025-08-18 20:49:30 +02:00 · 2022-08-10 20:16:09 -04:00
commit 565a6434c2
27 changed files with 1016 additions and 0 deletions
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -0,0 +1,165 @@
+import 'dart:io';
+import 'dart:isolate';
+import 'dart:math';
+import 'dart:ui';
+
+import 'package:flutter/material.dart';
+import 'package:file_picker/file_picker.dart';
+import 'package:install_plugin_v2/install_plugin_v2.dart';
+import 'package:path_provider/path_provider.dart';
+import 'package:permission_handler/permission_handler.dart';
+import 'package:flutter_downloader/flutter_downloader.dart';
+import 'package:app_installer/app_installer.dart';
+
+// Port for FlutterDownloader background/foreground communication
+ReceivePort _port = ReceivePort();
+
+void main() async {
+  await initializeDownloader();
+  runApp(const MyApp());
+}
+
+// Setup the FlutterDownloader plugin
+Future<void> initializeDownloader() async {
+  // Make sure FlutterDownloader can be used
+  WidgetsFlutterBinding.ensureInitialized();
+  await FlutterDownloader.initialize();
+  // Set up the status update callback for FlutterDownloader
+  FlutterDownloader.registerCallback(downloadCallbackBackground);
+  // The actual callback is in the background isolate
+  // So setup a port to pass the data to a foreground callback
+  IsolateNameServer.registerPortWithName(
+      _port.sendPort, 'downloader_send_port');
+  _port.listen((dynamic data) {
+    String id = data[0];
+    DownloadTaskStatus status = data[1];
+    int progress = data[2];
+    downloadCallbackForeground(id, status, progress);
+  });
+}
+
+// Callback that receives FlutterDownloader status and forwards to a foreground function
+@pragma('vm:entry-point')
+void downloadCallbackBackground(
+    String id, DownloadTaskStatus status, int progress) {
+  final SendPort? send =
+      IsolateNameServer.lookupPortByName('downloader_send_port');
+  send!.send([id, status, progress]);
+}
+
+// Foreground function to act on FlutterDownloader status updates (install then delete downloaded APK)
+void downloadCallbackForeground(
+    String id, DownloadTaskStatus status, int progress) async {
+  if (status == DownloadTaskStatus.complete) {
+    FlutterDownloader.open(taskId: id);
+  }
+}
+
+// Given a URL (assumed valid), initiate an APK download (will trigger install callback when complete)
+void downloadAPK(String url, String appId) async {
+  var apkDir = Directory(
+      "${(await getExternalStorageDirectory())?.path as String}/$appId");
+  if (apkDir.existsSync()) apkDir.deleteSync(recursive: true);
+  apkDir.createSync();
+  await FlutterDownloader.enqueue(
+    url: url,
+    savedDir: apkDir.path,
+    showNotification: true,
+    openFileFromNotification: true,
+  );
+}
+
+// Extract a GitHub project name and author account name from a GitHub URL (can be any sub-URL of the project)
+Map<String, String>? getAppNamesFromGitHubURL(String url) {
+  RegExp regex = RegExp(r"://github.com/[^/]*/[^/]*");
+  var match = regex.firstMatch(url.toLowerCase());
+  if (match != null) {
+    var uri = url.substring(match.start + 14, match.end);
+    var slashIndex = uri.indexOf("/");
+    var author = uri.substring(0, slashIndex);
+    var appName = uri.substring(slashIndex + 1);
+    return {"author": author, "appName": appName};
+  }
+  return null;
+}
+
+// Future<Directory> getAPKDir() async {
+//   var apkDir = Directory("${(await getExternalStorageDirectory())!.path}/apks");
+//   if (!apkDir.existsSync()) {
+//     apkDir.createSync();
+//   }
+//   return apkDir;
+// }
+
+class MyApp extends StatelessWidget {
+  const MyApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Obtainium',
+      theme: ThemeData(
+        primarySwatch: Colors.blue,
+      ),
+      home: const MyHomePage(title: 'Obtainium'),
+    );
+  }
+}
+
+class MyHomePage extends StatefulWidget {
+  const MyHomePage({super.key, required this.title});
+
+  final String title;
+
+  @override
+  State<MyHomePage> createState() => _MyHomePageState();
+}
+
+class _MyHomePageState extends State<MyHomePage> {
+  int ind = 0;
+  var urls = [
+    "https://github.com/Ashinch/ReadYou/releases/download/0.8.0/ReadYou-0.8.0-eec397e.apk",
+    "https://github.com/Ashinch/ReadYou/releases/download/0.8.1/ReadYou-0.8.1-c741f19.apk",
+    "https://github.com/Ashinch/ReadYou/releases/download/0.8.3/ReadYou-0.8.3-7a47329.apk"
+  ];
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(widget.title),
+      ),
+      body: Center(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: <Widget>[
+            Text(
+              urls[ind] + ind.toString(),
+              style: Theme.of(context).textTheme.headline4,
+            ),
+          ],
+        ),
+      ),
+      floatingActionButton: FloatingActionButton(
+        onPressed: () {
+          var names = getAppNamesFromGitHubURL(urls[ind]);
+          if (names != null) {
+            downloadAPK(urls[ind], "${names["author"]!}_${names["appName"]!}");
+            setState(() {
+              ind = ind == (urls.length - 1) ? 0 : ind + 1;
+            });
+          }
+        },
+        tooltip: 'Increment',
+        child: const Icon(Icons.add),
+      ),
+    );
+  }
+
+  @override
+  void dispose() {
+    // Remove the FlutterDownloader communication port
+    IsolateNameServer.removePortNameMapping('downloader_send_port');
+    super.dispose();
+  }
+}