import uuid
from typing import Optional

from fastapi import APIRouter, HTTPException, status, Depends, Security
from sqlalchemy.exc import SQLAlchemyError
from sqlalchemy.orm import Session

from ..schemas.auth import UserToken
import barker.schemas.master as schemas
from ..core.security import get_current_active_user as get_user
from ..db.session import SessionLocal
from ..models.master import Modifier

router = APIRouter()


# Dependency
def get_db():
    try:
        db = SessionLocal()
        yield db
    finally:
        db.close()


@router.post("", response_model=schemas.Modifier)
def save(
    data: schemas.ModifierIn, db: Session = Depends(get_db), user: UserToken = Security(get_user, scopes=["modifiers"]),
):
    try:
        item = Modifier(
            name=data.name,
            show_in_bill=data.show_in_bill,
            price=data.price,
            modifier_category_id=data.modifier_category.id_,
            is_active=data.is_active,
        )
        db.add(item)
        db.commit()
        return modifier_info(item)
    except SQLAlchemyError as e:
        db.rollback()
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR, detail=str(e),
        )
    except Exception:
        db.rollback()
        raise


@router.put("/{id_}", response_model=schemas.Modifier)
def update(
    id_: uuid.UUID,
    data: schemas.ModifierIn,
    db: Session = Depends(get_db),
    user: UserToken = Security(get_user, scopes=["modifiers"]),
):
    try:
        item: Modifier = db.query(Modifier).filter(Modifier.id == id_).first()
        item.name = data.name
        item.show_in_bill = data.show_in_bill
        item.price = data.price
        item.modifier_category_id = data.modifier_category.id_
        item.is_active = data.is_active
        db.commit()
        return modifier_info(item)
    except SQLAlchemyError as e:
        db.rollback()
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR, detail=str(e),
        )
    except Exception:
        db.rollback()
        raise


@router.delete("/{id_}")
def delete(
    id_: uuid.UUID, db: Session = Depends(get_db), user: UserToken = Security(get_user, scopes=["modifiers"]),
):
    try:
        item: Modifier = db.query(Modifier).filter(Modifier.id == id_).first()
        db.delete(item)
        db.commit()
        return modifier_info(item)
    except SQLAlchemyError as e:
        db.rollback()
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR, detail=str(e),
        )
    except Exception:
        db.rollback()
        raise


@router.get("")
def show_blank(
    db: Session = Depends(get_db), user: UserToken = Security(get_user, scopes=["modifiers"]),
):
    return modifier_info(None)


@router.get("/list")
def show_list(db: Session = Depends(get_db), user: UserToken = Depends(get_user)):
    return [modifier_info(item) for item in db.query(Modifier).order_by(Modifier.name).all()]


@router.get("/{id_}")
def show_id(
    id_: uuid.UUID, db: Session = Depends(get_db), user: UserToken = Security(get_user, scopes=["modifiers"]),
):
    item: Modifier = db.query(Modifier).filter(Modifier.id == id_).first()
    return modifier_info(item)


def modifier_info(item: Optional[Modifier]):
    if item is None:
        return {
            "name": "",
            "showInBill": False,
            "price": 0,
            "isActive": True,
            "modifierCategory": {},
        }
    return {
        "id": item.id,
        "name": item.name,
        "showInBill": item.show_in_bill,
        "price": item.price,
        "isActive": item.is_active,
        "modifierCategory": {"id": item.modifier_category.id, "name": item.modifier_category.name,},
    }