from flask import Flask, render_template, request, jsonify
import json, os

app = Flask(__name__)
DATEI = os.path.join(os.path.dirname(__file__), "sitzplan.json")   # relativ zum Skript


def lade():
    with open(DATEI, "r", encoding="utf-8") as f:
        return json.load(f)


@app.route("/")
def home():
    return render_template("index.html", data=lade())


@app.route("/speichern", methods=["POST"])
def speichern():
    daten = request.get_json()
    with open(DATEI, "w", encoding="utf-8") as f:
        json.dump(daten, f, ensure_ascii=False, indent=2)
    return jsonify({"status": "ok"})


if __name__ == "__main__":
    app.run(host="0.0.0.0", port=5000)