Создание чата

backend/app/schemas/chat.py

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+from pydantic import BaseModel
+from datetime import datetime
+from typing import List, Optional
+from app.schemas.user import User
+
+class ChatFileBase(BaseModel):
+    file_name: str
+    file_size: int
+
+class ChatFileCreate(ChatFileBase):
+    pass
+
+class ChatFile(ChatFileBase):
+    id: int
+    message_id: int
+    file_path: str
+    created_at: datetime
+
+    class Config:
+        from_attributes = True
+
+class MessageBase(BaseModel):
+    content: str
+
+class MessageCreate(MessageBase):
+    pass
+
+class Message(MessageBase):
+    id: int
+    chat_id: int
+    sender_id: int
+    is_read: bool
+    created_at: datetime
+    files: List[ChatFile] = []
+
+    class Config:
+        from_attributes = True
+
+class ChatBase(BaseModel):
+    employee_id: int
+    admin_id: int
+
+class ChatCreate(ChatBase):
+    pass
+
+class Chat(ChatBase):
+    id: int
+    created_at: datetime
+    employee: User
+    admin: User
+    last_message: Optional[Message] = None
+    unread_count: Optional[int] = 0
+
+    class Config:
+        from_attributes = True
+
+# Схемы для WebSocket сообщений
+class WSMessage(BaseModel):
+    type: str
+    content: Optional[str] = None
+    message_ids: Optional[List[int]] = None
+    files: Optional[List[dict]] = None
+
+class WSResponse(BaseModel):
+    type: str
+    id: Optional[int] = None
+    sender_id: Optional[int] = None
+    content: Optional[str] = None
+    created_at: Optional[datetime] = None
+    is_read: Optional[bool] = None
+    message_ids: Optional[List[int]] = None
+    files: Optional[List[ChatFile]] = None
+    error: Optional[str] = None