Files
swiftcontrol/lib/bluetooth/remote_pairing.dart
2025-12-14 16:22:07 +01:00

309 lines
11 KiB
Dart

import 'dart:io';
import 'package:bluetooth_low_energy/bluetooth_low_energy.dart';
import 'package:flutter/foundation.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:bike_control/bluetooth/devices/trainer_connection.dart';
import 'package:bike_control/bluetooth/devices/zwift/protocol/zp.pb.dart';
import 'package:bike_control/bluetooth/messages/notification.dart';
import 'package:bike_control/gen/l10n.dart';
import 'package:bike_control/utils/actions/base_actions.dart';
import 'package:bike_control/utils/actions/remote.dart';
import 'package:bike_control/utils/core.dart';
import 'package:bike_control/utils/keymap/buttons.dart';
import 'package:bike_control/utils/requirements/multi.dart';
import '../utils/keymap/keymap.dart';
class RemotePairing extends TrainerConnection {
bool get isLoading => _isLoading;
late final _peripheralManager = PeripheralManager();
bool _isLoading = false;
bool _isServiceAdded = false;
bool _isSubscribedToEvents = false;
Central? _central;
GATTCharacteristic? _inputReport;
RemotePairing()
: super(
title: 'Remote Control',
supportedActions: InGameAction.values,
);
Future<void> reconnect() async {
await _peripheralManager.stopAdvertising();
await _peripheralManager.removeAllServices();
_isServiceAdded = false;
startAdvertising().catchError((e) {
core.settings.setRemoteControlEnabled(false);
core.connection.signalNotification(
AlertNotification(LogLevel.LOGLEVEL_WARNING, 'Failed to start Remote Control pairing: $e'),
);
});
}
Future<void> startAdvertising() async {
_isLoading = true;
isStarted.value = true;
_peripheralManager.stateChanged.forEach((state) {
print('Peripheral manager state: ${state.state}');
});
if (!kIsWeb && Platform.isAndroid) {
_peripheralManager.connectionStateChanged.forEach((state) {
print('Peripheral connection state: ${state.state} of ${state.central.uuid}');
if (state.state == ConnectionState.connected) {
} else if (state.state == ConnectionState.disconnected) {
_central = null;
isConnected.value = false;
core.connection.signalNotification(
AlertNotification(LogLevel.LOGLEVEL_INFO, AppLocalizations.current.disconnected),
);
}
});
final status = await Permission.bluetoothAdvertise.request();
if (!status.isGranted) {
print('Bluetooth advertise permission not granted');
isStarted.value = false;
return;
}
}
while (_peripheralManager.state != BluetoothLowEnergyState.poweredOn && core.settings.getRemoteControlEnabled()) {
print('Waiting for peripheral manager to be powered on...');
if (core.settings.getLastTarget() == Target.thisDevice) {
return;
}
await Future.delayed(Duration(seconds: 1));
}
final inputReport = GATTCharacteristic.mutable(
uuid: UUID.fromString('2A4D'),
permissions: [GATTCharacteristicPermission.read],
properties: [GATTCharacteristicProperty.notify, GATTCharacteristicProperty.read],
descriptors: [
GATTDescriptor.immutable(
// Report Reference: ID=1, Type=Input(1)
uuid: UUID.fromString('2908'),
value: Uint8List.fromList([0x01, 0x01]),
),
],
);
if (!_isServiceAdded) {
await Future.delayed(Duration(seconds: 1));
final reportMapDataAbsolute = Uint8List.fromList([
0x05, 0x01, // Usage Page (Generic Desktop)
0x09, 0x02, // Usage (Mouse)
0xA1, 0x01, // Collection (Application)
0x85, 0x01, // Report ID (1)
0x09, 0x01, // Usage (Pointer)
0xA1, 0x00, // Collection (Physical)
0x05, 0x09, // Usage Page (Button)
0x19, 0x01, // Usage Min (1)
0x29, 0x03, // Usage Max (3)
0x15, 0x00, // Logical Min (0)
0x25, 0x01, // Logical Max (1)
0x95, 0x03, // Report Count (3)
0x75, 0x01, // Report Size (1)
0x81, 0x02, // Input (Data,Var,Abs) // buttons
0x95, 0x01, // Report Count (1)
0x75, 0x05, // Report Size (5)
0x81, 0x03, // Input (Const,Var,Abs) // padding
0x05, 0x01, // Usage Page (Generic Desktop)
0x09, 0x30, // Usage (X)
0x09, 0x31, // Usage (Y)
0x15, 0x00, // Logical Min (0)
0x25, 0x64, // Logical Max (100)
0x75, 0x08, // Report Size (8)
0x95, 0x02, // Report Count (2)
0x81, 0x02, // Input (Data,Var,Abs)
0xC0,
0xC0,
]);
// 1) Build characteristics
final hidInfo = GATTCharacteristic.immutable(
uuid: UUID.fromString('2A4A'),
value: Uint8List.fromList([0x11, 0x01, 0x00, 0x02]),
descriptors: [], // HID v1.11, country=0, flags=2
);
final reportMap = GATTCharacteristic.immutable(
uuid: UUID.fromString('2A4B'),
//properties: [GATTCharacteristicProperty.read],
//permissions: [GATTCharacteristicPermission.read],
value: reportMapDataAbsolute,
descriptors: [
GATTDescriptor.immutable(uuid: UUID.fromString('2908'), value: Uint8List.fromList([0x0, 0x0])),
],
);
final protocolMode = GATTCharacteristic.mutable(
uuid: UUID.fromString('2A4E'),
properties: [GATTCharacteristicProperty.read, GATTCharacteristicProperty.writeWithoutResponse],
permissions: [GATTCharacteristicPermission.read, GATTCharacteristicPermission.write],
descriptors: [],
);
final hidControlPoint = GATTCharacteristic.mutable(
uuid: UUID.fromString('2A4C'),
properties: [GATTCharacteristicProperty.writeWithoutResponse],
permissions: [GATTCharacteristicPermission.write],
descriptors: [],
);
// Input report characteristic (notify)
final keyboardInputReport = GATTCharacteristic.mutable(
uuid: UUID.fromString('2A4D'),
permissions: [GATTCharacteristicPermission.read],
properties: [GATTCharacteristicProperty.notify, GATTCharacteristicProperty.read],
descriptors: [
GATTDescriptor.immutable(
// Report Reference: ID=1, Type=Input(1)
uuid: UUID.fromString('2908'),
value: Uint8List.fromList([0x02, 0x01]),
),
],
);
final outputReport = GATTCharacteristic.mutable(
uuid: UUID.fromString('2A4D'),
permissions: [GATTCharacteristicPermission.read, GATTCharacteristicPermission.write],
properties: [
GATTCharacteristicProperty.read,
GATTCharacteristicProperty.write,
GATTCharacteristicProperty.writeWithoutResponse,
],
descriptors: [
GATTDescriptor.immutable(
// Report Reference: ID=1, Type=Input(1)
uuid: UUID.fromString('2908'),
value: Uint8List.fromList([0x02, 0x02]),
),
],
);
// 2) HID service
final hidService = GATTService(
uuid: UUID.fromString(Platform.isIOS ? '1812' : '00001812-0000-1000-8000-00805F9B34FB'),
isPrimary: true,
characteristics: [
hidInfo,
reportMap,
protocolMode,
outputReport,
hidControlPoint,
keyboardInputReport,
inputReport,
],
includedServices: [],
);
if (!_isSubscribedToEvents) {
_isSubscribedToEvents = true;
_peripheralManager.characteristicReadRequested.forEach((char) {
print('Read request for characteristic: ${char}');
// You can respond to read requests here if needed
});
_peripheralManager.characteristicNotifyStateChanged.forEach((char) {
if (char.characteristic.uuid == inputReport.uuid) {
if (char.state) {
_inputReport = char.characteristic;
_central = char.central;
} else {
_inputReport = null;
_central = null;
}
}
print(
'Notify state changed for characteristic: ${char.characteristic.uuid} vs ${char.characteristic.uuid == inputReport.uuid}: ${char.state}',
);
});
}
await _peripheralManager.addService(hidService);
// 3) Optional Battery service
await _peripheralManager.addService(
GATTService(
uuid: UUID.fromString('180F'),
isPrimary: true,
characteristics: [
GATTCharacteristic.immutable(
uuid: UUID.fromString('2A19'),
value: Uint8List.fromList([100]),
descriptors: [],
),
],
includedServices: [],
),
);
_isServiceAdded = true;
}
final advertisement = Advertisement(
name:
'BikeControl ${Platform.isIOS
? 'iOS'
: Platform.isAndroid
? 'Android'
: ''}',
serviceUUIDs: [UUID.fromString(Platform.isIOS ? '1812' : '00001812-0000-1000-8000-00805F9B34FB')],
);
print('Starting advertising with Zwift service...');
await _peripheralManager.startAdvertising(advertisement);
_isLoading = false;
}
Future<void> stopAdvertising() async {
await _peripheralManager.stopAdvertising();
isStarted.value = false;
isConnected.value = false;
_isLoading = false;
}
Future<void> notifyCharacteristic(Uint8List value) async {
if (_inputReport != null && _central != null) {
await _peripheralManager.notifyCharacteristic(_central!, _inputReport!, value: value);
}
}
@override
Future<ActionResult> sendAction(KeyPair keyPair, {required bool isKeyDown, required bool isKeyUp}) async {
final point = await (core.actionHandler as RemoteActions).resolveTouchPosition(keyPair: keyPair, windowInfo: null);
final point2 = point; //Offset(100, 99.0);
await sendAbsMouseReport(0, point2.dx.toInt(), point2.dy.toInt());
await sendAbsMouseReport(1, point2.dx.toInt(), point2.dy.toInt());
await sendAbsMouseReport(0, point2.dx.toInt(), point2.dy.toInt());
return Success('Mouse clicked at: ${point2.dx.toInt()} ${point2.dy.toInt()}');
}
Uint8List absMouseReport(int buttons3bit, int x, int y) {
final b = buttons3bit & 0x07;
final xi = x.clamp(0, 100);
final yi = y.clamp(0, 100);
return Uint8List.fromList([b, xi, yi]);
}
// Send a relative mouse move + button state as 3-byte report: [buttons, dx, dy]
Future<void> sendAbsMouseReport(int buttons, int dx, int dy) async {
final bytes = absMouseReport(buttons, dx, dy);
if (kDebugMode) {
print('Preparing to send abs mouse report: buttons=$buttons, dx=$dx, dy=$dy');
print('Sending abs mouse report: ${bytes.map((e) => e.toRadixString(16).padLeft(2, '0'))}');
}
await notifyCharacteristic(bytes);
// we don't want to overwhelm the target device
await Future.delayed(Duration(milliseconds: 10));
}
}