1.9

backend/app/routers/messages.py

@@ -79,3 +79,60 @@ async def delete_message(
         return {"success": True}
     except ValueError as e:
         raise HTTPException(status_code=403, detail=str(e))
+
+
+@router.post("/{conversation_id}/messages/{message_id}/recall")
+async def recall_message(
+    conversation_id: str,
+    message_id: str,
+    user: User = Depends(get_current_user),
+    db: AsyncSession = Depends(get_db),
+):
+    """撤回消息（2 分钟内）"""
+    service = MessageService(db)
+    try:
+        await service.recall_message(message_id, user.id)
+        # 广播撤回事件
+        from app.services.conversation_service import ConversationService
+        conv_service = ConversationService(db)
+        detail = await conv_service.get_conversation_detail(conversation_id, user.id)
+        if detail and "members" in detail:
+            from app.websocket.events import EventType
+            from app.websocket.manager import manager
+            member_ids = [m["user_id"] for m in detail["members"]]
+            for uid in member_ids:
+                await manager.send_to_user(uid, EventType.CHAT_MESSAGE_RECALLED, {
+                    "conversation_id": conversation_id, "message_id": message_id,
+                    "recalled_by": user.id,
+                })
+        return {"success": True}
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e))
+
+
+@router.post("/{conversation_id}/messages/{message_id}/reactions")
+async def add_reaction(
+    conversation_id: str,
+    message_id: str,
+    body: dict,
+    user: User = Depends(get_current_user),
+    db: AsyncSession = Depends(get_db),
+):
+    """添加/取消表情回应（toggle）"""
+    service = MessageService(db)
+    result = await service.react(message_id, user.id, body.get("emoji", ""))
+    # 广播回应变化
+    from app.services.conversation_service import ConversationService
+    from app.websocket.events import EventType
+    from app.websocket.manager import manager
+    conv_service = ConversationService(db)
+    detail = await conv_service.get_conversation_detail(conversation_id, user.id)
+    if detail and "members" in detail:
+        member_ids = [m["user_id"] for m in detail["members"]]
+        etype = EventType.CHAT_REACTION_ADDED if result["action"] == "added" else EventType.CHAT_REACTION_REMOVED
+        for uid in member_ids:
+            await manager.send_to_user(uid, etype, {
+                "conversation_id": conversation_id, "message_id": message_id,
+                "emoji": result["emoji"], "user_id": user.id,
+            })
+    return result