from fastapi import Depends, FastAPI
from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession

from app.db import get_session, init_db
from app.models import Song, SongCreate

app = FastAPI()


# REMOVED BECAUSE WE NOW USE ALEMBIC TO CREATE AND MANAGE TABLES
# @app.on_event("startup")
# async def on_startup():
#     """
#     It's worth noting that from app.models import Song is required.
#     Without it, the song table will not be created. Kind of like
#     how I have to do my flask sql alchemy models
#     """
#     await init_db()


@app.get("/ping")
async def pong():
    return {"ping": "pong!"}


@app.get("/songs", response_model=list[Song])
async def get_songs(session: AsyncSession = Depends(get_session)):
    result = await session.execute(select(Song))
    songs = result.scalars().all()
    return [Song(name=song.name, artist=song.artist, id=song.id, year=song.year) for song in songs]


@app.post("/songs")
async def add_song(song: SongCreate, session: AsyncSession = Depends(get_session)):
    song = Song(name=song.name, artist=song.artist, year=song.year)
    session.add(song)
    await session.commit()
    await session.refresh(song)  # refreshed becuase of the async nature
    return song