feat: 系统消息

lib/models/msg/system.dart

@@ -0,0 +1,77 @@
+import 'dart:convert';
+
+class MessageSystemModel {
+  int? id;
+  int? cursor;
+  int? type;
+  String? title;
+  Map? content;
+  Source? source;
+  String? timeAt;
+  int? cardType;
+  String? cardBrief;
+  String? cardMsgBrief;
+  String? cardCover;
+  String? cardStoryTitle;
+  String? cardLink;
+  String? mc;
+  int? isStation;
+  int? isSend;
+  int? notifyCursor;
+
+  MessageSystemModel({
+    this.id,
+    this.cursor,
+    this.type,
+    this.title,
+    this.content,
+    this.source,
+    this.timeAt,
+    this.cardType,
+    this.cardBrief,
+    this.cardMsgBrief,
+    this.cardCover,
+    this.cardStoryTitle,
+    this.cardLink,
+    this.mc,
+    this.isStation,
+    this.isSend,
+    this.notifyCursor,
+  });
+
+  factory MessageSystemModel.fromJson(Map<String, dynamic> jsons) =>
+      MessageSystemModel(
+        id: jsons["id"],
+        cursor: jsons["cursor"],
+        type: jsons["type"],
+        title: jsons["title"],
+        content: json.decode(jsons["content"]),
+        source: Source.fromJson(jsons["source"]),
+        timeAt: jsons["time_at"],
+        cardType: jsons["card_type"],
+        cardBrief: jsons["card_brief"],
+        cardMsgBrief: jsons["card_msg_brief"],
+        cardCover: jsons["card_cover"],
+        cardStoryTitle: jsons["card_story_title"],
+        cardLink: jsons["card_link"],
+        mc: jsons["mc"],
+        isStation: jsons["is_station"],
+        isSend: jsons["is_send"],
+        notifyCursor: jsons["notify_cursor"],
+      );
+}
+
+class Source {
+  String? name;
+  String? logo;
+
+  Source({
+    this.name,
+    this.logo,
+  });
+
+  factory Source.fromJson(Map<String, dynamic> json) => Source(
+        name: json["name"],
+        logo: json["logo"],
+      );
+}