added taskattachmentfile class, added attachment list with download option

lib/api/client.dart

@@ -54,6 +54,8 @@ class Client {
         'User-Agent': 'Vikunja Mobile App'
       };
 
+  get headers => _headers;
+
   @override
   int get hashCode => _token.hashCode;
 

lib/main.dart

@@ -13,6 +13,7 @@ import 'package:vikunja_app/pages/home.dart';
 import 'package:vikunja_app/pages/user/login.dart';
 import 'package:vikunja_app/theme/theme.dart';
 import 'package:timezone/data/latest_all.dart' as tz;
+import 'package:flutter_downloader/flutter_downloader.dart';
 
 import 'managers/notifications.dart';
 
@@ -69,6 +70,7 @@ void main() async {
       Permission.notification.request();
     }
   });
+  await FlutterDownloader.initialize();
   Workmanager().initialize(callbackDispatcher, isInDebugMode: false);
   runApp(VikunjaGlobal(
       child: new VikunjaApp(

lib/models/taskAttachment.dart

@@ -2,11 +2,44 @@ import 'package:json_annotation/json_annotation.dart';
 
 import 'package:vikunja_app/models/user.dart';
 
+class TaskAttachmentFile {
+  final int id;
+  final DateTime created;
+  final String mime;
+  final String name;
+  final int size;
+
+  TaskAttachmentFile({
+    required this.id,
+    required this.created,
+    required this.mime,
+    required this.name,
+    required this.size,
+  });
+
+  TaskAttachmentFile.fromJSON(Map<String, dynamic> json)
+      : id = json['id'],
+        created = DateTime.parse(json['created']),
+        mime = json['mime'],
+        name = json['name'],
+        size = json['size'];
+
+  toJSON() => {
+    'id': id,
+    'created': created.toUtc().toIso8601String(),
+    'mime': mime,
+    'name': name,
+    'size': size,
+  };
+}
+
+
 @JsonSerializable()
 class TaskAttachment {
   final int id, taskId;
   final DateTime created;
   final User createdBy;
+  final TaskAttachmentFile file;
   // TODO: add file
 
   TaskAttachment({
@@ -14,12 +47,14 @@ class TaskAttachment {
     required this.taskId,
     DateTime? created,
     required this.createdBy,
+    required this.file,
   }) : this.created = created ?? DateTime.now();
 
   TaskAttachment.fromJSON(Map<String, dynamic> json)
       : id = json['id'],
         taskId = json['task_id'],
         created = DateTime.parse(json['created']),
+        file = TaskAttachmentFile.fromJSON(json['file']),
         createdBy = User.fromJson(json['created_by']);
 
   toJSON() => {
@@ -27,5 +62,6 @@ class TaskAttachment {
     'task_id': taskId,
     'created': created.toUtc().toIso8601String(),
     'created_by': createdBy.toJSON(),
+    'file': file.toJSON(),
   };
 }

lib/pages/list/task_edit.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_downloader/flutter_downloader.dart';
 import 'package:flutter_typeahead/flutter_typeahead.dart';
 import 'package:flutter_colorpicker/flutter_colorpicker.dart';
 import 'package:vikunja_app/components/datetimePicker.dart';
@@ -113,7 +114,7 @@ class _TaskEditPageState extends State<TaskEditPage> {
                 key: _formKey,
                 child: ListView(
                   key: _listKey,
-                  padding: const EdgeInsets.all(16.0),
+                  padding: EdgeInsets.fromLTRB(16, 16, 16, MediaQuery.of(context).size.height / 2),
                   children: <Widget>[
                     Padding(
                       padding: EdgeInsets.symmetric(vertical: 10.0),
@@ -415,6 +416,33 @@ class _TaskEditPageState extends State<TaskEditPage> {
                         ],
                       ),
                     ),
+                    ListView.separated(
+                      separatorBuilder: (context, index) => Divider(),
+                      padding: const EdgeInsets.all(16.0),
+                      shrinkWrap: true,
+                      itemCount: widget.task.attachments.length,
+                      itemBuilder: (context, index) {
+                        return ListTile(
+                          title: Text(widget.task.attachments[index].file.name),
+                          trailing: IconButton(
+                            icon: Icon(Icons.download),
+                            onPressed: () {
+                              String url = VikunjaGlobal.of(context).client.base;
+                              url += '/tasks/${widget.task.id}/attachments/${widget.task.attachments[index].id}';
+                              print(url);
+                              final taskId = FlutterDownloader.enqueue(
+                                url: url,
+                                fileName: widget.task.attachments[index].file.name,
+                                headers: VikunjaGlobal.of(context).client.headers, // optional: header send with url (auth token etc)
+                                savedDir: '/storage/emulated/0/Download/',
+                                showNotification: true, // show download progress in status bar (for Android)
+                                openFileFromNotification: true, // click on notification to open downloaded file (for Android)
+                              );
+                            },
+                          ),
+                        );
+                      },
+                    )
                   ],
                 ),
               ),

pubspec.lock

@@ -278,6 +278,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.3"
+  flutter_downloader:
+    dependency: "direct main"
+    description:
+      name: flutter_downloader
+      sha256: e130001cf85d8d7450b8318a4670c19e495dd8c102ad4b15a512e9405e7c451d
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.11.6"
   flutter_keyboard_visibility:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -34,6 +34,7 @@ dependencies:
   dynamic_color: ^1.6.6
   chewie: ^1.5.0
   flutter_widget_from_html: ^0.14.10
+  flutter_downloader: ^1.11.6
 
 
 dev_dependencies: