first commit

app/chats/router.py

@@ -0,0 +1,45 @@
+from fastapi import APIRouter, Depends
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.auth.service import get_current_user
+from app.chats.schemas import ChatCreateRequest, ChatDetailRead, ChatRead
+from app.chats.service import create_chat_for_user, get_chat_for_user, get_chats_for_user
+from app.database.session import get_db
+from app.users.models import User
+
+router = APIRouter(prefix="/chats", tags=["chats"])
+
+
+@router.get("", response_model=list[ChatRead])
+async def list_chats(
+    limit: int = 50,
+    before_id: int | None = None,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+) -> list[ChatRead]:
+    return await get_chats_for_user(db, user_id=current_user.id, limit=limit, before_id=before_id)
+
+
+@router.post("", response_model=ChatRead)
+async def create_chat(
+    payload: ChatCreateRequest,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+) -> ChatRead:
+    return await create_chat_for_user(db, creator_id=current_user.id, payload=payload)
+
+
+@router.get("/{chat_id}", response_model=ChatDetailRead)
+async def get_chat(
+    chat_id: int,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+) -> ChatDetailRead:
+    chat, members = await get_chat_for_user(db, chat_id=chat_id, user_id=current_user.id)
+    return ChatDetailRead(
+        id=chat.id,
+        type=chat.type,
+        title=chat.title,
+        created_at=chat.created_at,
+        members=members,
+    )