import uuid

from typing import List, Optional

import brewman.schemas.master as schemas

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

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


router = APIRouter()


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


@router.post("", response_model=schemas.ProductGroup)
def save(
    data: schemas.ProductGroupIn,
    db: Session = Depends(get_db),
    user: UserToken = Security(get_user, scopes=["product-groups"]),
):
    try:
        item = ProductGroup(name=data.name)
        db.add(item)
        db.commit()
        return product_group_info(item, db)
    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.ProductGroup)
def update(
    id_: uuid.UUID,
    data: schemas.ProductGroupIn,
    db: Session = Depends(get_db),
    user: UserToken = Security(get_user, scopes=["product-groups"]),
):
    try:
        item = db.query(ProductGroup).filter(ProductGroup.id == id_).first()
        if item.is_fixture:
            raise HTTPException(
                status_code=status.HTTP_423_LOCKED,
                detail=f"{item.name} is a fixture and cannot be edited or deleted.",
            )
        item.name = data.name
        db.commit()
        return product_group_info(item, db)
    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=["product-groups"]),
):
    try:
        item = db.query(ProductGroup).filter(ProductGroup.id == id_).first()

        if item is None:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail="Product Group not found",
            )
        elif item.is_fixture:
            raise HTTPException(
                status_code=status.HTTP_423_LOCKED,
                detail=f"{item.name} is a fixture and cannot be edited or deleted.",
            )
        else:
            raise HTTPException(
                status_code=status.HTTP_501_NOT_IMPLEMENTED,
                detail="Product Group deletion not implemented",
            )
    except Exception:
        db.rollback()
        raise


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


@router.get("/list", response_model=List[schemas.ProductGroup])
async def show_list(db: Session = Depends(get_db), user: UserToken = Depends(get_user)):
    return [
        {"id": item.id, "name": item.name, "isFixture": item.is_fixture}
        for item in db.query(ProductGroup).order_by(ProductGroup.name).all()
    ]


@router.get("/{id_}", response_model=schemas.ProductGroup)
def show_id(
    id_: uuid.UUID,
    db: Session = Depends(get_db),
    user: UserToken = Security(get_user, scopes=["product-groups"]),
):
    item = db.query(ProductGroup).filter(ProductGroup.id == id_).first()
    return product_group_info(item, db)


def product_group_info(item: Optional[ProductGroup], db):
    if item is None:
        return {
            "name": "",
            "isFixture": False,
        }
    else:
        return {
            "id": item.id,
            "name": item.name,
            "isFixture": item.is_fixture,
        }