"""
Activity Time Explorer (Flask)
-------------------------------
Minimal Flask server — serves only the HTML template and static assets.
All CSV processing happens client-side in the browser.

Run with:
    pip install flask
    python app.py

Then open http://localhost:5000 and upload a CSV.
"""

from flask import Flask, render_template
from waitress import serve

app = Flask(__name__)


@app.route("/")
def index():
    return render_template("index.html")


if __name__ == "__main__":
    print("Serving on http://localhost:5000")
    serve(app, host="0.0.0.0", port=5000)