from fastapi import FastAPI, BackgroundTasks, HTTPException
from fastapi.staticfiles import StaticFiles
from pydantic import BaseModel
from typing import List
import os
from .library import scan_library
from .cast_logic import cast_manager
from .utils import get_logger, VIDEOS_DIR, THUMBNAILS_DIR, get_host_ip, API_PORT

logger = get_logger(__name__)

app = FastAPI(title="Boys_Streaming API")

# Serve videos and thumbnails
app.mount("/media", StaticFiles(directory=str(VIDEOS_DIR)), name="media")
app.mount("/thumbs", StaticFiles(directory=str(THUMBNAILS_DIR)), name="thumbs")

class CastRequest(BaseModel):
    video_paths: List[str]

@app.get("/library")
async def get_library():
    return scan_library()

@app.post("/cast")
async def start_casting(request: CastRequest, background_tasks: BackgroundTasks):
    host_ip = get_host_ip()
    urls = [f"http://{host_ip}:{API_PORT}/media/{path}" for path in request.video_paths]

    logger.info(f"Received cast request for {len(urls)} videos")
    cast_manager.play_queue(urls)
    return {"status": "started", "queue_len": len(urls)}

@app.get("/status")
async def get_status():
    return cast_manager.get_status()

@app.post("/stop")
async def stop_casting():
    cast_manager.stop()
    return {"status": "stopped"}

@app.on_event("startup")
async def startup_event():
    # Pre-discover Chromecast on startup to be ready
    logger.info("Application starting up...")
    # Run discovery in background to not block startup
    import threading
    threading.Thread(target=cast_manager.discover, daemon=True).start()