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 SaleCategory

router = APIRouter()


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


@router.post("", response_model=schemas.SaleCategory)
def save(
    data: schemas.SaleCategoryIn, db: Session = Depends(get_db), user: UserToken = Security(get_user, scopes=["products"]),
):
    try:
        item = SaleCategory(name=data.name, tax_id=data.tax.id_)
        db.add(item)
        db.commit()
        return sale_category_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.SaleCategory)
def update(
    id_: uuid.UUID,
    data: schemas.SaleCategoryIn,
    db: Session = Depends(get_db),
    user: UserToken = Security(get_user, scopes=["products"]),
):
    try:
        item: SaleCategory = db.query(SaleCategory).filter(SaleCategory.id == id_).first()
        item.name = data.name
        item.tax_id = data.tax.id_
        db.commit()
        return sale_category_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=["products"]),
):
    try:
        item: SaleCategory = db.query(SaleCategory).filter(SaleCategory.id == id_).first()
        if item is None:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND, detail="Sale Category not found",
            )
        else:
            raise HTTPException(
                status_code=status.HTTP_501_NOT_IMPLEMENTED, detail="Sale Category deletion not implemented",
            )
    except Exception:
        db.rollback()
        raise


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


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


@router.get("/for-discount")
def for_discount(db: Session = Depends(get_db), user: UserToken = Depends(get_user)):
    return [{"id": item.id, "name": item.name, "discount": 0} for item in db.query(SaleCategory).order_by(SaleCategory.name).all()]


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


def sale_category_info(item: Optional[SaleCategory]):
    if item is None:
        return {"name": "", "tax": {}}
    return {
        "id": item.id,
        "name": item.name,
        "tax": {"id": item.tax_id, "name": item.tax.name, "rate": item.tax.rate},
    }