opt: unread & zan grpc & readlist open with browser (#852)

* opt: unread

* opt: zan grpc

* feat: readlist open with browser

lib/models/common/msg/msg_unread_type.dart

@@ -1,5 +1,10 @@
-enum MsgUnReadType { pm, reply, at, like, sysMsg }
+enum MsgUnReadType {
+  pm('私信'),
+  reply('回复我的'),
+  at('@我'),
+  like('收到的赞'),
+  sysMsg('系统通知');
 
-extension MsgUnReadTypeExt on MsgUnReadType {
-  String get title => const ['私信', '回复我的', '@我', '收到的赞', '系统通知'][index];
+  final String title;
+  const MsgUnReadType(this.title);
 }

lib/models/msg/msgfeed_unread.dart

@@ -1,26 +1,15 @@
-class MsgFeedUnread {
-  MsgFeedUnread({
-    this.at = 0,
-    this.chat = 0,
-    this.like = 0,
-    this.reply = 0,
-    this.sysMsg = 0,
-    this.up = 0,
-  });
+import 'package:fixnum/fixnum.dart';
 
+class MsgFeedUnread {
   int at = 0;
-  int chat = 0;
   int like = 0;
   int reply = 0;
   int sysMsg = 0;
-  int up = 0;
 
-  MsgFeedUnread.fromJson(Map<String, dynamic> json) {
-    at = json['at'] ?? 0;
-    chat = json['chat'] ?? 0;
-    like = json['like'] ?? 0;
-    reply = json['reply'] ?? 0;
-    sysMsg = json['sys_msg'] ?? 0;
-    up = json['up'] ?? 0;
+  MsgFeedUnread.fromJson(Map<String, Int64> json) {
+    at = json['at']?.toInt() ?? 0;
+    like = json['like']?.toInt() ?? 0;
+    reply = json['reply']?.toInt() ?? 0;
+    sysMsg = json['sys_msg']?.toInt() ?? 0;
   }
 }