from typing import List

from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.ext.asyncio import AsyncSession

from backend.api.deps import AuthUser, require_admin
from backend.db.session import get_session
from backend.modules.customers.schemas import CustomerCreate, CustomerOut, CustomerUpdate
from backend.modules.customers.service import create_customer, list_customers, update_customer, delete_customer

router = APIRouter(prefix="/api/v1/customers", tags=["customers"])


@router.get("", response_model=List[CustomerOut])
async def get_customers(
    session: AsyncSession = Depends(get_session),
    auth_user: AuthUser = Depends(require_admin),
) -> List[CustomerOut]:
    customers = await list_customers(session)
    return [CustomerOut.model_validate(c) for c in customers]


@router.post("", response_model=CustomerOut, status_code=status.HTTP_201_CREATED)
async def create_customer_endpoint(
    payload: CustomerCreate,
    session: AsyncSession = Depends(get_session),
    auth_user: AuthUser = Depends(require_admin),
) -> CustomerOut:
    customer = await create_customer(session, payload.model_dump(), auth_user.user)
    return CustomerOut.model_validate(customer)


@router.put("/{customer_id}", response_model=CustomerOut)
async def update_customer_endpoint(
    customer_id: int,
    payload: CustomerUpdate,
    session: AsyncSession = Depends(get_session),
    auth_user: AuthUser = Depends(require_admin),
) -> CustomerOut:
    customer = await update_customer(session, customer_id, payload.model_dump(exclude_unset=True), auth_user.user)
    return CustomerOut.model_validate(customer)


@router.delete("/{customer_id}", status_code=status.HTTP_204_NO_CONTENT)
async def delete_customer_endpoint(
    customer_id: int,
    session: AsyncSession = Depends(get_session),
    auth_user: AuthUser = Depends(require_admin),
):
    await delete_customer(session, customer_id, auth_user.user)