import uuid

from io import BytesIO
from typing import List

import brewman.schemas.voucher as output

from fastapi import APIRouter, Depends, Security
from fastapi.responses import StreamingResponse
from sqlalchemy.orm import Session

from ..core.security import get_user
from ..db.session import SessionLocal
from ..models.voucher import DbImage
from ..schemas.auth import UserToken


router = APIRouter()


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


@router.get("/{id_}/{type_}")
def db_image(id_: uuid.UUID, type_: str, db: Session = Depends(get_db)):
    item = db.query(DbImage).filter(DbImage.id == id_).first()
    if type_ == "thumbnail":
        item = BytesIO(item.thumbnail)
    else:
        item = BytesIO(item.image)
    return StreamingResponse(item, media_type="image/jpeg")


def save_files(voucher_id: uuid.UUID, i: List[bytes], t: List[bytes], db: Session):
    i = i or []
    t = t or []
    for index, value in enumerate(i):
        db.add(DbImage(voucher_id, "voucher", i[index], t[index]))


def update_files(
    voucher_id: uuid.UUID,
    data: List[output.ImageUpload],
    i: List[bytes],
    t: List[bytes],
    db: Session,
):
    i = i or []
    t = t or []
    old = [f.id_ for f in data if f.id_]
    images = db.query(DbImage).filter(DbImage.resource_id == voucher_id).all()
    for image in [i for i in images if i.id not in old]:
        db.delete(image)
    for index, value in enumerate(i):
        db.add(DbImage(voucher_id, "voucher", i[index], t[index]))