feat(chat): 聊天列表新增未读消息总数

core/routers/chat/routes.py

@@ -24,7 +24,8 @@ from core.base.exceptions import WebsocketTooManyRequests
 
 from . import schema
 from .handlers import socket_manager
-from .services import websocket_callback, get_user_active_direct_chats, get_unread_messages_per_chat, get_chat
+from .services import websocket_callback, get_user_active_direct_chats, get_unread_messages_per_chat, get_chat, \
+    get_total_unread_messages_count
 
 logger = logging.getLogger(__name__)
 
@@ -34,7 +35,7 @@ chat_router = APIRouter(prefix='/chat', tags=['聊天模块'])
 @chat_router.get(
     '/all/', summary='获取所有聊天',
     response_model=base_schema.BaseResponse[
-        base_schema.Paginated[
+        schema.ChatPaginated[
             List[schema.ChatUnreadOut]
         ]
     ]
@@ -67,11 +68,13 @@ async def get_all_chats(
     result = await db_session.execute(query)
     chats = result.scalars().all()
 
-    unread_messages_chats_count = await get_unread_messages_per_chat(db_session, chats, login_user)
+    unread_messages_chats = await get_unread_messages_per_chat(db_session, chats, login_user)
+    unread_messages_total  = await get_total_unread_messages_count(db_session, login_user)
 
     return {
         'data': {
-            'list': unread_messages_chats_count,
+            'list': unread_messages_chats,
+            'unread_messages_total': unread_messages_total,
             'next_page': (page * page_size) < total,
             'total': total,
             'page': page,

core/routers/chat/schema.py

@@ -4,12 +4,11 @@
 # @Software : PyCharm
 # @Author : xingc
 # @Desc :
-from datetime import datetime
 from typing import Literal, Optional, List
 
 from pydantic import BaseModel, conint, UUID4
 
-from core.base.schema import MessageType
+from core.base.schema import MessageType, Paginated
 from core.routers.user.schema import LiteUser
 
 
@@ -32,6 +31,10 @@ class PreviewMessage(BaseModel):
     content: str
 
 
+class ChatPaginated(Paginated):
+    unread_messages_total: int
+
+
 class ChatUnreadOut(BaseModel):
     chat_guid: UUID4
     created_at: str

core/routers/chat/services.py

@@ -40,6 +40,25 @@ async def get_user_active_direct_chats(
 
     return None
 
+async def get_total_unread_messages_count(db_session: AsyncSession, login_user: LoginUser) -> int:
+    """获取未读消息总数"""
+    query = (
+        select(func.count(Message.id))
+        .join(
+            ChatParticipant,
+            and_(
+                Message.chat_id == ChatParticipant.chat_id,
+                ChatParticipant.user_id == login_user.user_id
+            )
+        )
+        .filter(
+            Message.id > ChatParticipant.last_read_message_id,
+            Message.user_id != login_user.user_id,
+            ChatParticipant.is_deleted == False
+        )
+    )
+    result = await db_session.execute(query)
+    return result.scalar()
 
 async def get_chat_unread_messages_count(db_session: AsyncSession, login_user: LoginUser, chats):
     """查询未读消息的预览"""