"""User API endpoints."""
from __future__ import annotations

from fastapi import APIRouter, Depends, HTTPException, status

from app.api.deps import get_user_service
from app.models.user import UserCreate, UserRead
from app.services.user_service import UserAlreadyExistsError, UserNotFoundError, UserService

router = APIRouter(prefix="/users", tags=["users"])


@router.get("/", response_model=list[UserRead])
async def list_users(service: UserService = Depends(get_user_service)) -> list[UserRead]:
    users = await service.list_users()
    return [UserRead.model_validate(user) for user in users]


@router.post("/", response_model=UserRead, status_code=status.HTTP_201_CREATED)
async def create_user(
    user_in: UserCreate,
    service: UserService = Depends(get_user_service),
) -> UserRead:
    try:
        user = await service.create_user(user_in)
    except UserAlreadyExistsError as exc:  # pragma: no cover - thin API layer
        raise HTTPException(status_code=status.HTTP_409_CONFLICT, detail=str(exc)) from exc
    return UserRead.model_validate(user)


@router.get("/{user_id}", response_model=UserRead)
async def get_user(user_id: int, service: UserService = Depends(get_user_service)) -> UserRead:
    try:
        user = await service.get_user(user_id)
    except UserNotFoundError as exc:  # pragma: no cover - thin API layer
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=str(exc)) from exc
    return UserRead.model_validate(user)