feat: 站内信 (#6183)

* 添加站内信

* s

* s

* 添加接口

* fix

* fix

* 重构了一些

* 完成

* 完善

* s

* s

* s

* s

* s

* s

* 测试ok

* 替换业务中发送消息的方式

* 修改

* s

* 去掉 update 兼容 create

* 添加 unread total 接口

* 调整json字段

Co-authored-by: xinwen <coderWen@126.com>

apps/notifications/serializers/site_msgs.py

@@ -0,0 +1,28 @@
+from rest_framework.serializers import ModelSerializer
+from rest_framework import serializers
+
+from ..models import SiteMessage
+
+
+class SiteMessageListSerializer(ModelSerializer):
+    class Meta:
+        model = SiteMessage
+        fields = ['id', 'subject', 'has_read', 'read_at']
+
+
+class SiteMessageRetrieveSerializer(ModelSerializer):
+    class Meta:
+        model = SiteMessage
+        fields = ['id', 'subject', 'message', 'has_read', 'read_at']
+
+
+class SiteMessageIdsSerializer(serializers.Serializer):
+    ids = serializers.ListField(child=serializers.UUIDField())
+
+
+class SiteMessageSendSerializer(serializers.Serializer):
+    subject = serializers.CharField()
+    message = serializers.CharField()
+    user_ids = serializers.ListField(child=serializers.UUIDField(), required=False)
+    group_ids = serializers.ListField(child=serializers.UUIDField(), required=False)
+    is_broadcast = serializers.BooleanField(default=False)