app.py

"""Boot script — initializes the DB, starts the cron, serves the dashboard.

Run with:  python app.py
"""
from __future__ import annotations

import os
import threading
import webbrowser

from dotenv import load_dotenv
from flask import Flask

load_dotenv()

from monitor import db
from monitor.api import bp
from monitor.scheduler import start_scheduler


def create_app() -> Flask:
    db.init_db()
    # Backfill: convert any pre-existing 'May 30, 2023' / '1 week ago' style
    # dates to ISO YYYY-MM-DD so SQL filtering and chart bucketing work.
    fixed = db.normalize_existing_dates()
    if fixed:
        print(f"[startup] normalized {fixed} article date(s) to ISO format")
    app = Flask(__name__)
    app.register_blueprint(bp)
    return app


def main() -> None:
    app = create_app()
    port = int(os.environ.get("PORT", "5000"))

    # Background daily cron — only when running the dev server directly.
    if not os.environ.get("WERKZEUG_RUN_MAIN"):
        start_scheduler()

    url = f"http://127.0.0.1:{port}/"
    threading.Timer(1.2, lambda: webbrowser.open(url)).start()
    print(f"\nGoogle News API Monitor — open {url}\n")
    app.run(host="127.0.0.1", port=port, debug=False, use_reloader=False)


if __name__ == "__main__":
    main()