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

from app.core.database import get_db
from app.crud import audit as audit_crud
from app.crud import manufacturer as manufacturer_crud
from app.deps import require_permission
from app.models.user import User
from app.schemas.manufacturer import ManufacturerCreate, ManufacturerRead, ManufacturerUpdate

router = APIRouter()


@router.get("", response_model=list[ManufacturerRead])
async def list_manufacturers(
    skip: int = 0,
    limit: int = 100,
    db: AsyncSession = Depends(get_db),
    _: User = Depends(require_permission("manufacturers:read")),
):
    return await manufacturer_crud.list_all(db, skip=skip, limit=limit)


@router.post("", response_model=ManufacturerRead, status_code=status.HTTP_201_CREATED)
async def create_manufacturer(
    payload: ManufacturerCreate,
    db: AsyncSession = Depends(get_db),
    actor: User = Depends(require_permission("manufacturers:write")),
):
    m = await manufacturer_crud.create(
        db,
        name=payload.name,
        url=str(payload.url),
        logo_url=str(payload.logo_url) if payload.logo_url else None,
    )
    await audit_crud.log(
        db, actor=actor, action="create", resource_type="Manufacturer",
        resource_id=m.id,
        description=audit_crud.describe_create("Manufacturer", m.id, m.name),
    )
    return m


@router.get("/{manufacturer_id}", response_model=ManufacturerRead)
async def get_manufacturer(
    manufacturer_id: int,
    db: AsyncSession = Depends(get_db),
    _: User = Depends(require_permission("manufacturers:read")),
):
    m = await manufacturer_crud.get(db, manufacturer_id)
    if m is None:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Manufacturer not found")
    return m


@router.patch("/{manufacturer_id}", response_model=ManufacturerRead)
async def update_manufacturer(
    manufacturer_id: int,
    payload: ManufacturerUpdate,
    db: AsyncSession = Depends(get_db),
    actor: User = Depends(require_permission("manufacturers:write")),
):
    m = await manufacturer_crud.get(db, manufacturer_id)
    if m is None:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Manufacturer not found")
    data = payload.model_dump(exclude_unset=True)
    if "url" in data and data["url"] is not None:
        data["url"] = str(data["url"])
    if "logo_url" in data and data["logo_url"] is not None:
        data["logo_url"] = str(data["logo_url"])
    m = await manufacturer_crud.update(db, m, data)
    await audit_crud.log(
        db, actor=actor, action="update", resource_type="Manufacturer",
        resource_id=m.id,
        description=audit_crud.describe_update("Manufacturer", m.id, data),
    )
    return m


@router.delete("/{manufacturer_id}", status_code=status.HTTP_204_NO_CONTENT)
async def delete_manufacturer(
    manufacturer_id: int,
    db: AsyncSession = Depends(get_db),
    actor: User = Depends(require_permission("manufacturers:delete")),
):
    m = await manufacturer_crud.get(db, manufacturer_id)
    if m is None:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Manufacturer not found")
    name = m.name
    await manufacturer_crud.delete(db, m)
    await audit_crud.log(
        db, actor=actor, action="delete", resource_type="Manufacturer",
        resource_id=manufacturer_id,
        description=audit_crud.describe_delete("Manufacturer", manufacturer_id, name),
    )