import argparse
import asyncio
import os
import sys
from crawler import Crawler, CrawlerConfig


async def run_cli():
    config = CrawlerConfig.from_env_or_prompt()
    crawler = Crawler(config)
    await crawler.run()


def main():
    parser = argparse.ArgumentParser(description="Clickduck - Web Crawler & Link Explorer")
    parser.add_argument("--web", action="store_true", help="Launch the Web Frontend dashboard")
    parser.add_argument("--host", type=str, default=os.getenv("HOST", "127.0.0.1"), help="Host IP for web UI (default: 127.0.0.1 or $HOST)")
    parser.add_argument("--port", type=int, default=int(os.getenv("PORT", "8000")), help="Port for web UI (default: 8000 or $PORT)")
    args = parser.parse_args()

    if args.web:
        from web import run_server
        run_server(host=args.host, port=args.port)
    else:
        try:
            asyncio.run(run_cli())
        except KeyboardInterrupt:
            print("\nCrawling interrupted by user.")
            sys.exit(0)


if __name__ == "__main__":
    if sys.platform == "win32":
        asyncio.set_event_loop_policy(asyncio.WindowsProactorEventLoopPolicy())
    main()