app.py

from flask import Flask, render_template, request

import mbta_helper

app = Flask(__name__)


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


@app.route("/nearest_mbta", methods=["POST"])
def nearest_mbta():
    place_name = request.form.get("place_name", "").strip()
    if not place_name:
        return render_template("error.html", message="Please enter a location."), 400

    try:
        station, accessible, temp_f = mbta_helper.find_stop_near(place_name)
    except Exception as exc:
        return render_template("error.html", message=str(exc)), 500

    return render_template(
        "mbta_station.html",
        place_name=place_name,
        station=station,
        accessible=accessible,
        temp_f=temp_f,
    )


if __name__ == "__main__":
    app.run(debug=True)