"""Flask web application for YouTube RSS feed parsing."""

from flask import Flask, render_template, request, jsonify
from feed_parser import YouTubeFeedParser


app = Flask(__name__)

# Default channel ID for demonstration
DEFAULT_CHANNEL_ID = "UCtTWOND3uyl4tVc_FarDmpw"


@app.route("/", methods=["GET"])
def index():
    """Render the main page."""
    return render_template("index.html")


@app.route("/api/feed", methods=["GET"])
def get_feed():
    """API endpoint to fetch YouTube channel feed.

    Query parameters:
        channel_id: YouTube channel ID (optional, uses default if not provided)
        filter_shorts: Whether to filter out Shorts (default: true)

    Returns:
        JSON response with feed data or error message
    """
    channel_id = request.args.get("channel_id", DEFAULT_CHANNEL_ID)
    filter_shorts = request.args.get("filter_shorts", "true").lower() == "true"

    parser = YouTubeFeedParser(channel_id)
    result = parser.fetch_feed(filter_shorts=filter_shorts)

    if result is None:
        return jsonify({"error": "Failed to fetch feed"}), 500

    return jsonify(result)


def main():
    """CLI entry point for testing feed parser."""
    parser = YouTubeFeedParser(DEFAULT_CHANNEL_ID)
    result = parser.fetch_feed()

    if result is None:
        print("Failed to retrieve RSS feed")
        return

    print(f"Feed Title: {result['feed_title']}")
    print(f"Feed Link: {result['feed_link']}")

    for entry in result['entries']:
        print(f"\nEntry Title: {entry['title']}")
        print(f"Entry Link: {entry['link']}")


if __name__ == "__main__":
    main()