add new cover data for AppCard (#1637)

Author: boyan01

lib/utils/web_view/web_view_mobile.dart

@@ -294,6 +294,7 @@ class _ShareMenuItem extends StatelessWidget {
                 true,
                 [],
                 '',
+                null,
               );
 
               await context.accountServer.sendAppCardMessage(

lib/widgets/message/item/action_card/action_card_data.dart

@@ -17,6 +17,7 @@ class AppCardData {
     this.shareable,
     this.actions,
     this.coverUrl,
+    this.cover,
   );
 
   factory AppCardData.fromJson(Map<String, dynamic> json) =>
@@ -28,6 +29,9 @@ class AppCardData {
   final String iconUrl;
   @JsonKey(name: 'cover_url', defaultValue: '')
   final String coverUrl;
+
+  final Cover? cover;
+
   final String title;
   final String description;
   @JsonKey(name: 'action', defaultValue: '')
@@ -47,6 +51,28 @@ class AppCardData {
   bool get canShareActions => actions.every((e) => e.isValidSharedAction);
 }
 
+@JsonSerializable()
+class Cover {
+  const Cover({
+    required this.url,
+    required this.thumbnail,
+    required this.mimeType,
+    required this.width,
+    required this.height,
+  });
+
+  factory Cover.fromJson(Map<String, dynamic> json) => _$CoverFromJson(json);
+
+  final String url;
+  final String? thumbnail;
+  @JsonKey(name: 'mime_type')
+  final String mimeType;
+  final int width;
+  final int height;
+
+  Map<String, dynamic> toJson() => _$CoverToJson(this);
+}
+
 extension on ActionData {
   bool get isValidSharedAction {
     try {

lib/widgets/message/item/action_card/action_card_data.g.dart

@@ -1,3 +1,5 @@
+import 'dart:math' as math;
+
 import 'package:flutter/material.dart';
 import 'package:flutter_hooks/flutter_hooks.dart';
 
@@ -105,7 +107,9 @@ class ActionsCardBody extends StatelessWidget {
             AspectRatio(
               aspectRatio: 1,
               child: CacheImage(data.coverUrl),
-            ),
+            )
+          else if (data.cover != null)
+            _CoverWidget(cover: data.cover!),
           const SizedBox(height: 10),
           Padding(
             padding: const EdgeInsets.symmetric(horizontal: 12),
@@ -128,6 +132,26 @@ class ActionsCardBody extends StatelessWidget {
       );
 }
 
+class _CoverWidget extends StatelessWidget {
+  const _CoverWidget({required this.cover});
+
+  final Cover cover;
+
+  @override
+  Widget build(BuildContext context) {
+    var aspect = 1.0;
+    try {
+      aspect = math.max(cover.width / cover.height, 1.5);
+    } catch (err) {
+      aspect = 1;
+    }
+    return AspectRatio(
+      aspectRatio: aspect,
+      child: CacheImage(cover.url),
+    );
+  }
+}
+
 class _Actions extends StatelessWidget {
   const _Actions({required this.actions});