from fastapi import APIRouter, Depends, HTTPException
from core.database import fake_users_db
from typing import List, Optional

router = APIRouter()

# Simulated playlist database
fake_playlists_db = {
    "playlist1": {
        "id": "playlist1",
        "name": "My Favorites",
        "songs": [
            {"id": "song1", "title": "Song 1", "artist": "Artist 1", "duration": "3:45"},
            {"id": "song2", "title": "Song 2", "artist": "Artist 2", "duration": "4:20"},
        ]
    }
}

@router.post("/playlist/songs")
async def get_playlist_songs(
    playlist_id: str,
    limit: Optional[int] = 10,
    offset: Optional[int] = 0
):
    """Fetch list of songs from a playlist"""
    if playlist_id not in fake_playlists_db:
        raise HTTPException(status_code=404, detail="Playlist not found")
    
    playlist = fake_playlists_db[playlist_id]
    songs = playlist["songs"][offset:offset + limit]
    
    return {
        "message": "Songs fetched successfully",
        "data": {
            "playlist_name": playlist["name"],
            "songs": songs,
            "total_songs": len(playlist["songs"])
        },
        "metadata": {
            "limit": limit,
            "offset": offset,
            "has_more": (offset + limit) < len(playlist["songs"])
        }
    }