fix: export to calendar

android/app/src/main/AndroidManifest.xml

@@ -7,6 +7,7 @@
 
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="28" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
 
     <application
         android:name="${applicationName}"

lib/providers/timetable_model.dart

@@ -10,7 +10,7 @@ import 'package:otlplus/models/lecture.dart';
 import 'package:otlplus/models/semester.dart';
 import 'package:otlplus/models/timetable.dart';
 import 'package:otlplus/models/user.dart';
-import 'package:otlplus/utils/export_image.dart';
+import 'package:otlplus/utils/export_file.dart';
 
 class TimetableModel extends ChangeNotifier {
   late User _user;
@@ -257,14 +257,7 @@ class TimetableModel extends ChangeNotifier {
             options: Options(responseType: ResponseType.bytes),
           );
 
-      switch (type) {
-        case ShareType.image:
-          writeImage(response.data);
-          break;
-        case ShareType.ical:
-          // TODO
-          break;
-      }
+      writeFile(type, response.data);
       return true;
     } catch (exception) {
       print(exception);

lib/utils/export_file.dart

@@ -0,0 +1,48 @@
+import 'dart:io';
+import 'dart:ui';
+
+import 'package:flutter/rendering.dart';
+import 'package:flutter/services.dart';
+import 'package:otlplus/constants/url.dart';
+import 'package:path_provider/path_provider.dart';
+import 'package:permission_handler/permission_handler.dart';
+import 'package:open_app_file/open_app_file.dart';
+
+const MethodChannel _channel = const MethodChannel("org.sparcs.otlplus");
+
+Future<void> exportImage(RenderRepaintBoundary boundary) async {
+  final image = await boundary.toImage(pixelRatio: 3.0);
+  final byteData = await image.toByteData(format: ImageByteFormat.png);
+
+  writeFile(ShareType.image, byteData?.buffer.asUint8List());
+}
+
+Future<void> writeFile(ShareType type, Uint8List? bytes) async {
+  final fileName =
+      "OTL-${DateTime.now().millisecondsSinceEpoch}.${type == ShareType.image ? 'png' : 'ics'}";
+
+  if (Platform.isAndroid) {
+    if (await Permission.storage.request().isGranted) {
+      switch (type) {
+        case ShareType.image:
+          _channel.invokeMethod("writeImageAsBytes", <String, dynamic>{
+            "fileName": fileName,
+            "bytes": bytes,
+          });
+          break;
+        case ShareType.ical:
+          final directory = await getExternalStorageDirectory();
+          final path =
+              "${directory?.path ?? '/storage/emulated/0/Android/data/org.sparcs.otlplus/files'}/$fileName";
+          File(path).writeAsBytesSync(bytes as List<int>);
+          OpenAppFile.open(path);
+          break;
+      }
+    }
+  } else {
+    final directory = await getApplicationDocumentsDirectory();
+    final path = "${directory.path}/$fileName";
+    File(path).writeAsBytesSync(bytes as List<int>);
+    OpenAppFile.open(path);
+  }
+}

pubspec.lock

@@ -165,10 +165,10 @@ packages:
     dependency: transitive
     description:
       name: ffi
-      sha256: "13a6ccf6a459a125b3fcdb6ec73bd5ff90822e071207c663bfd1f70062d51d18"
+      sha256: ed5337a5660c506388a9f012be0288fb38b49020ce2b45fe1f8b8323fe429f99
       url: "https://pub.dev"
     source: hosted
-    version: "1.2.1"
+    version: "2.0.2"
   file:
     dependency: transitive
     description:
@@ -415,14 +415,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.0.2"
-  open_file_safe:
+  open_app_file:
     dependency: "direct main"
     description:
-      name: open_file_safe
-      sha256: "99a43b36307bf6946bdc3b54514bc5081af53f46feaec782c840a116b681647d"
+      name: open_app_file
+      sha256: "5dd0af054364c12093947ad3e69370bb22ca535ca17f81f7b72444c7be18cc01"
       url: "https://pub.dev"
     source: hosted
-    version: "3.2.3"
+    version: "4.0.2"
   package_config:
     dependency: transitive
     description:
@@ -499,10 +499,10 @@ packages:
     dependency: transitive
     description:
       name: path_provider_windows
-      sha256: a34ecd7fb548f8e57321fd8e50d865d266941b54e6c3b7758cf8f37c24116905
+      sha256: "1cb68ba4cd3a795033de62ba1b7b4564dace301f952de6bfb3cd91b202b6ee96"
       url: "https://pub.dev"
     source: hosted
-    version: "2.0.7"
+    version: "2.1.7"
   permission_handler:
     dependency: "direct main"
     description:
@@ -944,10 +944,10 @@ packages:
     dependency: transitive
     description:
       name: win32
-      sha256: c0e3a4f7be7dae51d8f152230b86627e3397c1ba8c3fa58e63d44a9f3edc9cef
+      sha256: f2add6fa510d3ae152903412227bda57d0d5a8da61d2c39c1fb022c9429a41c0
       url: "https://pub.dev"
     source: hosted
-    version: "2.6.1"
+    version: "5.0.6"
   xdg_directories:
     dependency: transitive
     description:
@@ -973,5 +973,5 @@ packages:
     source: hosted
     version: "3.1.1"
 sdks:
-  dart: ">=3.0.0-0 <4.0.0"
+  dart: ">=3.0.0 <4.0.0"
   flutter: ">=3.7.0"

pubspec.yaml

@@ -25,7 +25,6 @@ dependencies:
   flutter_web_browser: ^0.17.1
   webview_flutter: ^3.0.4
   webview_cookie_manager: ^2.0.6
-  open_file_safe: ^3.2.3
   path_provider: ^2.0.12
   permission_handler: ^8.3.0
   provider: ^6.0.5
@@ -37,6 +36,7 @@ dependencies:
   flutter_widgetkit: ^1.0.3
   flutter_svg: ^2.0.7
   dropdown_button2: ^2.1.4
+  open_app_file: ^4.0.2
   # Firebase
   firebase_core: ^2.8.0
   firebase_analytics: ^10.1.6