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 Section

router = APIRouter()


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


@router.post("", response_model=schemas.Section)
def save(
    data: schemas.SectionIn, db: Session = Depends(get_db), user: UserToken = Security(get_user, scopes=["sections"]),
):
    try:
        item = Section(name=data.name)
        db.add(item)
        db.commit()
        return section_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.Section)
def update(
    id_: uuid.UUID,
    data: schemas.SectionIn,
    db: Session = Depends(get_db),
    user: UserToken = Security(get_user, scopes=["sections"]),
):
    try:
        item: Section = db.query(Section).filter(Section.id == id_).first()
        item.name = data.name
        db.commit()
        return section_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=["sections"]),
):
    try:
        item: Section = db.query(Section).filter(Section.id == id_).first()
        db.delete(item)
        db.commit()
        return section_info(None)
    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=["sections"]),
):
    return section_info(None)


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


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


def section_info(item: Optional[Section]):
    if item is None:
        return {"name": ""}
    return {"id": item.id, "name": item.name}