import argparse
import json
from pathlib import Path

from linkki_poster.broadcast_ops import delete_binding_from_telegram, update_texts
from linkki_poster.models import Config, Language
from linkki_poster.progress import ProgressDisplay
from webapp.storage import get_binding, load_metadata


def main() -> None:
    parser = argparse.ArgumentParser(description="Advanced broadcast management helper.")
    parser.add_argument("directory", help="Broadcast directory")
    parser.add_argument("action", choices=["update-texts", "delete-telegram"])
    parser.add_argument("--languages", default="fi,sv,en", help="Comma-separated languages for update-texts")
    parser.add_argument("--config", default="telegram_config.json", help="Path to Telegram config JSON")
    args = parser.parse_args()

    config = load_config(Path(args.config))
    post_dir = Path(args.directory).resolve()
    metadata = load_metadata(post_dir)
    binding = get_binding(metadata)
    if binding is None:
        raise ValueError("Broadcast is not linked to Telegram.")

    progress = ProgressDisplay()
    if args.action == "delete-telegram":
        delete_binding_from_telegram(config, binding, progress)
        return

    changed_languages = {
        Language(language.strip())
        for language in args.languages.split(",")
        if language.strip()
    }
    update_texts(post_dir, config, binding, changed_languages, progress)


def load_config(config_path: Path) -> Config:
    payload = json.loads(config_path.read_text(encoding="utf-8"))
    return Config(
        bot_token=str(payload["bot_token"]).strip(),
        chat_id=str(payload["chat_id"]).strip(),
        channel_username=str(payload.get("channel_username", "")).strip(),
    )


if __name__ == "__main__":
    main()