from datetime import UTC, datetime

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

from app.api.deps import get_current_telegram_user, log_audit
from app.api.service_visits import apply_vehicle_change
from app.db.session import get_session
from app.models.car import Car, VehicleDataChangeRequest
from app.models.user import User
from app.schemas.service_center import VehicleDataChangeRequestRead

router = APIRouter(prefix="/vehicle-change-requests", tags=["vehicle-change-requests"])


@router.post("/{request_id}/approve", response_model=VehicleDataChangeRequestRead)
async def approve_vehicle_change_request(
    request_id: int,
    session: AsyncSession = Depends(get_session),
    current_user: User = Depends(get_current_telegram_user),
) -> VehicleDataChangeRequest:
    request = await session.get(VehicleDataChangeRequest, request_id)
    if request is None:
        raise HTTPException(status_code=404, detail="Change request not found")
    if request.owner_user_id != current_user.id:
        raise HTTPException(status_code=403, detail="Forbidden")
    vehicle = await session.get(Car, request.vehicle_id)
    if vehicle is None:
        raise HTTPException(status_code=404, detail="Vehicle not found")
    apply_vehicle_change(vehicle, request.field_name, request.new_value)
    request.status = "approved"
    request.resolved_at = datetime.now(UTC)
    await log_audit(
        session,
        actor=current_user,
        action="vehicle_change_request.approve",
        target_type="vehicle_change_request",
        target_id=request_id,
    )
    await session.commit()
    await session.refresh(request)
    return request


@router.post("/{request_id}/reject", response_model=VehicleDataChangeRequestRead)
async def reject_vehicle_change_request(
    request_id: int,
    session: AsyncSession = Depends(get_session),
    current_user: User = Depends(get_current_telegram_user),
) -> VehicleDataChangeRequest:
    request = await session.get(VehicleDataChangeRequest, request_id)
    if request is None:
        raise HTTPException(status_code=404, detail="Change request not found")
    if request.owner_user_id != current_user.id:
        raise HTTPException(status_code=403, detail="Forbidden")
    request.status = "rejected"
    request.resolved_at = datetime.now(UTC)
    await log_audit(
        session,
        actor=current_user,
        action="vehicle_change_request.reject",
        target_type="vehicle_change_request",
        target_id=request_id,
    )
    await session.commit()
    await session.refresh(request)
    return request