"""
Launch Component 8 local chat interface.
"""

from __future__ import annotations

import argparse
import sys
from pathlib import Path

import yaml

# Ensure src imports work when script is run directly.
PROJECT_ROOT = Path(__file__).resolve().parents[1]
if str(PROJECT_ROOT) not in sys.path:
    sys.path.insert(0, str(PROJECT_ROOT))

from src.chat_interface.gradio_chat_app import create_demo


def parse_args() -> argparse.Namespace:
    parser = argparse.ArgumentParser(description="Launch Component 8 chat UI.")
    parser.add_argument("--config", default="configs/component8_chat_config.yaml")
    return parser.parse_args()


def main() -> None:
    args = parse_args()
    cfg_path = Path(args.config)
    if not cfg_path.exists():
        raise FileNotFoundError(f"Config not found: {cfg_path}")

    cfg = yaml.safe_load(cfg_path.read_text(encoding="utf-8"))
    host = str(cfg.get("server", {}).get("host", "127.0.0.1"))
    port = int(cfg.get("server", {}).get("port", 7860))
    share = bool(cfg.get("server", {}).get("share", False))

    demo = create_demo(config_path=args.config)
    demo.queue(default_concurrency_limit=1)
    demo.launch(server_name=host, server_port=port, share=share, inbrowser=False)


if __name__ == "__main__":
    main()