from fastapi import FastAPI, Depends, HTTPException
from sqlalchemy.orm import Session
from fastapi.middleware.cors import CORSMiddleware

import models
import schemas
import crud

from database import SessionLocal, engine

models.Base.metadata.create_all(bind=engine)

app = FastAPI()

# CORS
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Database Session
def get_db():
    db = SessionLocal()

    try:
        yield db
    finally:
        db.close()

# GET ITEMS
@app.get("/items", response_model=list[schemas.ItemResponse])
def get_items(db: Session = Depends(get_db)):
    return crud.get_items(db)

# CREATE ITEM
@app.post("/items", response_model=schemas.ItemResponse)
def create_item(
    item: schemas.ItemCreate,
    db: Session = Depends(get_db)
):
    return crud.create_item(db, item.title)

# DELETE ITEM
@app.delete("/items/{item_id}")
def delete_item(
    item_id: int,
    db: Session = Depends(get_db)
):
    item = crud.delete_item(db, item_id)

    if not item:
        raise HTTPException(
            status_code=404,
            detail="Item not found"
        )

    return {"message": "Item deleted"}

# SPIN
@app.post("/spin")
def spin(db: Session = Depends(get_db)):

    winner = crud.spin_wheel(db)

    if not winner:
        raise HTTPException(
            status_code=400,
            detail="No items available"
        )

    return {
        "winner": {
            "id": winner.id,
            "title": winner.title
        }
    }