from flask import Flask, render_template, request

app = Flask(__name__)

@app.route("/", methods=["GET", "POST"])
def index():
    stations = ["STN001", "STN002", "STN003"]
    rinex_versions = ["2.11", "3.00", "3.02", "3.03"]

    if request.method == "POST":
        selected_stations = request.form.getlist("stations")
        start_time = request.form.get("start_time")
        end_time = request.form.get("end_time")
        rinex_version = request.form.get("rinex_version")
        return f"Selected: {', '.join(selected_stations)}, {start_time} to {end_time}, RINEX {rinex_version}"

    return render_template("index.html", stations=stations, rinex_versions=rinex_versions)

if __name__ == "__main__":
    app.run(debug=True, host="0.0.0.0", port=5050)