const startButton = document.getElementById("start");

console.log(navigator.bluetooth);

const devices = await navigator.bluetooth.getDevices();

devices.forEach(async (device) => {
  const gattServer = await device.gatt.connect();
  const primaryService = await gattServer.getPrimaryService(0x1800);
  const MANUFACTURER_UUID = 0x2a29;
  const MODEL_UUID = 0x2a0a;
  const char = await primaryService.getCharacteristic(MODEL_UUID);
  const val = await char.readValue();
  //const char2 = await primaryService.getCharacteristic(MODEL_UUID);
  //const val2 = await char2.readValue();
  const decoder = new TextDecoder("utf-8");
  const manufacturer = decoder.decode(val);
  //const model = decoder.decode(val2);
  console.log("Manufacturer:", manufacturer);
});

startButton.addEventListener("click", async () => {
  try {
    const devices = await navigator.bluetooth.getDevices();
    console.log(2, devices);
    const device = await navigator.bluetooth.requestDevice({
      filters: [{ services: [0x180d] }],
      optionalServices: [
        0x1818, // Cycling Power – watts, torque, crank torque, etc.
        0x1816, // Cycling Speed & Cadence – speed, cadence, distance
        0x180d, // Heart Rate – optional, if the trainer includes an HR sensor
        0x180f, // Battery Service – trainer battery level (if battery‑powered)
        0x180a, // Device Information – manufacturer, model, firmware version
        0x1800,
        // add any custom 128‑bit UUIDs as strings, e.g.
        // '0000abcd-0000-1000-8000-00805f9b34fb'
      ],
      acceptAllDevices: true,
    });

    const server = await device.gatt.connect();

    console.log(await server.getPrimaryServices());
  } catch (error) {
    console.log(error);
  }
});

// startButton.addEventListener("click", async () => {
//   try {
//     const devices = await navigator.bluetooth.getDevices();
//     console.log(2, devices);
//     const device = await navigator.bluetooth.requestDevice({
//       //filters: [{ services: ["heart_rate"] }],
//       optionalServices: [
//         0x1818, // Cycling Power – watts, torque, crank torque, etc.
//         0x1816, // Cycling Speed & Cadence – speed, cadence, distance
//         0x180d, // Heart Rate – optional, if the trainer includes an HR sensor
//         0x180f, // Battery Service – trainer battery level (if battery‑powered)
//         0x180a, // Device Information – manufacturer, model, firmware version
//         0x1800,
//         // add any custom 128‑bit UUIDs as strings, e.g.
//         // '0000abcd-0000-1000-8000-00805f9b34fb'
//       ],
//       acceptAllDevices: true,
//     });

//     const server = await device.gatt.connect();

//     console.log(await server.getPrimaryServices());
//   } catch (error) {
//     console.log(error);
//   }
// });