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 scope_model as scope_model_crud
from app.deps import require_permission
from app.models.user import User
from app.schemas.scope_model import ScopeModelCreate, ScopeModelRead, ScopeModelUpdate

router = APIRouter()


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


@router.post("", response_model=ScopeModelRead, status_code=status.HTTP_201_CREATED)
async def create_scope_model(
    payload: ScopeModelCreate,
    db: AsyncSession = Depends(get_db),
    actor: User = Depends(require_permission("scope_models:write")),
):
    sm = await scope_model_crud.create(
        db,
        name=payload.name,
        manufacturer_id=payload.manufacturer_id,
        url=str(payload.url) if payload.url else None,
    )
    await audit_crud.log(
        db, actor=actor, action="create", resource_type="ScopeModel",
        resource_id=sm.id,
        description=audit_crud.describe_create("ScopeModel", sm.id, sm.name),
    )
    return sm


@router.get("/{scope_model_id}", response_model=ScopeModelRead)
async def get_scope_model(
    scope_model_id: int,
    db: AsyncSession = Depends(get_db),
    _: User = Depends(require_permission("scope_models:read")),
):
    sm = await scope_model_crud.get(db, scope_model_id)
    if sm is None:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Scope model not found")
    return sm


@router.patch("/{scope_model_id}", response_model=ScopeModelRead)
async def update_scope_model(
    scope_model_id: int,
    payload: ScopeModelUpdate,
    db: AsyncSession = Depends(get_db),
    actor: User = Depends(require_permission("scope_models:write")),
):
    sm = await scope_model_crud.get(db, scope_model_id)
    if sm is None:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Scope model not found")
    data = payload.model_dump(exclude_unset=True)
    if "url" in data and data["url"] is not None:
        data["url"] = str(data["url"])
    sm = await scope_model_crud.update(db, sm, data)
    await audit_crud.log(
        db, actor=actor, action="update", resource_type="ScopeModel",
        resource_id=sm.id,
        description=audit_crud.describe_update("ScopeModel", sm.id, data),
    )
    return sm


@router.delete("/{scope_model_id}", status_code=status.HTTP_204_NO_CONTENT)
async def delete_scope_model(
    scope_model_id: int,
    db: AsyncSession = Depends(get_db),
    actor: User = Depends(require_permission("scope_models:delete")),
):
    sm = await scope_model_crud.get(db, scope_model_id)
    if sm is None:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Scope model not found")
    name = sm.name
    await scope_model_crud.delete(db, sm)
    await audit_crud.log(
        db, actor=actor, action="delete", resource_type="ScopeModel",
        resource_id=scope_model_id,
        description=audit_crud.describe_delete("ScopeModel", scope_model_id, name),
    )