app.py

from flask import Flask, send_from_directory, request, jsonify
from flask_cors import CORS

app = Flask(__name__, static_folder="frontend")
CORS(app)

latest_data = {
    "voltage": 0,
    "current": 0,
    "power": 0,
    "soc": 100,
    "soh": 100,
    "lat": 12.907757,
    "lon": 77.566520
}

@app.route("/")
def home():
    return send_from_directory("frontend", "index.html")

@app.route("/api/data", methods=["GET"])
def data():
    global latest_data

    if request.args:
        latest_data["voltage"] = float(request.args.get("voltage", latest_data["voltage"]))
        latest_data["current"] = float(request.args.get("current", latest_data["current"]))
        latest_data["power"]   = float(request.args.get("power", latest_data["power"]))
        latest_data["soc"]     = float(request.args.get("soc", latest_data["soc"]))
        latest_data["soh"]     = float(request.args.get("soh", latest_data["soh"]))
        latest_data["lat"]     = float(request.args.get("lat", latest_data["lat"]))
        latest_data["lon"]     = float(request.args.get("lon", latest_data["lon"]))

        print("ESP32:", latest_data)

    return jsonify(latest_data)

@app.route("/<path:path>")
def static_files(path):
    return send_from_directory("frontend", path)

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