diff options
Diffstat (limited to 'lib/model')
-rw-r--r-- | lib/model/badge_motive.dart | 24 | ||||
-rw-r--r-- | lib/model/badge_motive_selection_factory.dart | 33 | ||||
-rw-r--r-- | lib/model/connection/device_connection.dart | 10 | ||||
-rw-r--r-- | lib/model/connection/flutter_blue_plus_device_connection.dart | 53 | ||||
-rw-r--r-- | lib/model/connection/mock_device_connection.dart | 11 | ||||
-rw-r--r-- | lib/model/connection/universal_ble_connection.dart | 31 | ||||
-rw-r--r-- | lib/model/device/device.dart | 17 | ||||
-rw-r--r-- | lib/model/device/flutter_blue_plus_device.dart | 15 | ||||
-rw-r--r-- | lib/model/device/mock_device.dart | 15 | ||||
-rw-r--r-- | lib/model/device/universal_ble_device.dart | 15 | ||||
-rw-r--r-- | lib/model/motive_selection/badge_motive_selection.dart | 22 | ||||
-rw-r--r-- | lib/model/motive_selection/badge_parser.dart | 37 | ||||
-rw-r--r-- | lib/model/motive_selection/flutter_blue_plus_motive_selection.dart | 127 | ||||
-rw-r--r-- | lib/model/motive_selection/mock_badge_motive_selection.dart | 44 | ||||
-rw-r--r-- | lib/model/motive_selection/universal_blue_motive_selection.dart | 111 |
15 files changed, 526 insertions, 39 deletions
diff --git a/lib/model/badge_motive.dart b/lib/model/badge_motive.dart new file mode 100644 index 0000000..0fd2039 --- /dev/null +++ b/lib/model/badge_motive.dart @@ -0,0 +1,24 @@ +// Copyright (C) 2025, uvok cheetah +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <https://www.gnu.org/licenses/>. + +class BadgeMotive { + final int id; + final String description; + + const BadgeMotive(this.id, this.description); + + @override + String toString() => "$id - $description"; +} diff --git a/lib/model/badge_motive_selection_factory.dart b/lib/model/badge_motive_selection_factory.dart new file mode 100644 index 0000000..45851c2 --- /dev/null +++ b/lib/model/badge_motive_selection_factory.dart @@ -0,0 +1,33 @@ +// Copyright (C) 2025, uvok cheetah +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <https://www.gnu.org/licenses/>. + +import 'package:uvok_epaper_badge/model/device/device.dart'; +import 'package:uvok_epaper_badge/model/device/flutter_blue_plus_device.dart'; +import 'package:uvok_epaper_badge/model/device/universal_ble_device.dart'; +import 'package:uvok_epaper_badge/model/motive_selection/badge_motive_selection.dart'; +import 'package:uvok_epaper_badge/model/motive_selection/flutter_blue_plus_motive_selection.dart'; +import 'package:uvok_epaper_badge/model/motive_selection/mock_badge_motive_selection.dart'; +import 'package:uvok_epaper_badge/model/motive_selection/universal_blue_motive_selection.dart'; + +class BadgeMotiveSelectionFactory { + static BadgeMotiveSelection createBadgeMotiveSelection(Device device) { + if (device is UniversalBleDevice) { + return UniversalBlueMotiveSelection(device: device); + } else if (device is FlutterBluePlusDevice) { + return FlutterBluePlusMotiveSelection(device: device); + } + return MockBadgeMotiveSelection(); + } +} diff --git a/lib/model/connection/device_connection.dart b/lib/model/connection/device_connection.dart index 5c810f0..f50bd2c 100644 --- a/lib/model/connection/device_connection.dart +++ b/lib/model/connection/device_connection.dart @@ -13,14 +13,12 @@ // You should have received a copy of the GNU General Public License // along with this program. If not, see <https://www.gnu.org/licenses/>. +import 'package:flutter/foundation.dart'; + enum ConnectionStatus { disconnected, connected, error } -abstract class DeviceConnection { +abstract interface class DeviceConnection { Future<void> connect(); Future<void> disconnect(); - ConnectionStatus get status; - - // Future<Uint8List> read(String endpoint); - // Future<void> write(String endpoint, Uint8List data); - // Stream<Uint8List> subscribe(String endpoint); + ValueNotifier<ConnectionStatus> get status; } diff --git a/lib/model/connection/flutter_blue_plus_device_connection.dart b/lib/model/connection/flutter_blue_plus_device_connection.dart index 3f860a6..5cb9eb2 100644 --- a/lib/model/connection/flutter_blue_plus_device_connection.dart +++ b/lib/model/connection/flutter_blue_plus_device_connection.dart @@ -15,16 +15,19 @@ import 'dart:async'; +import 'package:flutter/foundation.dart'; import 'package:flutter_blue_plus/flutter_blue_plus.dart'; import 'package:logger/logger.dart'; -import 'package:uvok_epaper_badge/first_where_ext.dart'; +import 'package:uvok_epaper_badge/extensions/iterable_ext.dart'; import 'package:uvok_epaper_badge/model/connection/device_connection.dart'; import 'package:uvok_epaper_badge/model/device/flutter_blue_plus_device.dart'; var logger = Logger(); class FlutterBluePlusDeviceConnection implements DeviceConnection { - ConnectionStatus _status = ConnectionStatus.disconnected; + final ValueNotifier<ConnectionStatus> _status = ValueNotifier( + ConnectionStatus.disconnected, + ); // Just to have a resonable default subscription? StreamSubscription<BluetoothConnectionState> subs = Stream<BluetoothConnectionState>.empty().listen((e) => ()); @@ -43,36 +46,38 @@ class FlutterBluePlusDeviceConnection implements DeviceConnection { // connect timeout doesn't work under Linux await dev.connect().timeout(Duration(seconds: 2)); // // ???? WTF ???? - List<BluetoothService> svcs = await dev.discoverServices(); - dev.onServicesReset.listen((_) async { - logger.i("Services Reset"); - // try { - // List<BluetoothService> svcs = dev.servicesList; - // findCharac(svcs); - // } catch (e) { - // logger.e(e); - // } - }); - - logger.i("services discovered"); - - findCharac(svcs); - - _status = ConnectionStatus.connected; - - await Future.delayed(Duration(seconds: 5)); - logger.i("Try re-discover"); - svcs = await dev.discoverServices(); + // List<BluetoothService> svcs = await dev.discoverServices(); + // dev.onServicesReset.listen((_) async { + // logger.i("Services Reset"); + // // try { + // // List<BluetoothService> svcs = dev.servicesList; + // // findCharac(svcs); + // // } catch (e) { + // // logger.e(e); + // // } + // }); + + // logger.i("services discovered"); + + // findCharac(svcs); + + // _status.value = ConnectionStatus.connected; + + // await Future.delayed(Duration(seconds: 5)); + // logger.i("Try re-discover"); + // svcs = await dev.discoverServices(); } @override Future<void> disconnect() async { + final dev = device.scanResult.device; subs.cancel().ignore(); - _status = ConnectionStatus.disconnected; + await dev.disconnect(); + _status.value = ConnectionStatus.disconnected; } @override - ConnectionStatus get status => _status; + ValueNotifier<ConnectionStatus> get status => _status; void _onConnStateChange(BluetoothConnectionState event) { logger.i("New conn state: ${event.toString()}"); diff --git a/lib/model/connection/mock_device_connection.dart b/lib/model/connection/mock_device_connection.dart index 8b8750a..9dc3726 100644 --- a/lib/model/connection/mock_device_connection.dart +++ b/lib/model/connection/mock_device_connection.dart @@ -13,21 +13,24 @@ // You should have received a copy of the GNU General Public License // along with this program. If not, see <https://www.gnu.org/licenses/>. +import 'package:flutter/foundation.dart'; import 'package:uvok_epaper_badge/model/connection/device_connection.dart'; class MockDeviceConnection implements DeviceConnection { - ConnectionStatus _status = ConnectionStatus.disconnected; + final ValueNotifier<ConnectionStatus> _status = ValueNotifier( + ConnectionStatus.disconnected, + ); @override Future<void> connect() async { - _status = ConnectionStatus.connected; + _status.value = ConnectionStatus.connected; } @override Future<void> disconnect() async { - _status = ConnectionStatus.disconnected; + _status.value = ConnectionStatus.disconnected; } @override - ConnectionStatus get status => _status; + ValueNotifier<ConnectionStatus> get status => _status; } diff --git a/lib/model/connection/universal_ble_connection.dart b/lib/model/connection/universal_ble_connection.dart index 6aa3c87..fa986a0 100644 --- a/lib/model/connection/universal_ble_connection.dart +++ b/lib/model/connection/universal_ble_connection.dart @@ -1,10 +1,28 @@ +// Copyright (C) 2025, uvok cheetah +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <https://www.gnu.org/licenses/>. + +import 'package:flutter/foundation.dart'; import 'package:universal_ble/universal_ble.dart'; import 'package:uvok_epaper_badge/model/connection/device_connection.dart'; import 'package:uvok_epaper_badge/model/device/universal_ble_device.dart'; class UniversalBleConnection implements DeviceConnection { final UniversalBleDevice _device; - ConnectionStatus _status = ConnectionStatus.disconnected; + final ValueNotifier<ConnectionStatus> _status = ValueNotifier( + ConnectionStatus.disconnected, + ); UniversalBleConnection(this._device); @@ -12,17 +30,22 @@ class UniversalBleConnection implements DeviceConnection { Future<void> connect() async { await _device.device.connect(); - _status = await _device.device.isConnected + _status.value = await _device.device.isConnected ? ConnectionStatus.connected : ConnectionStatus.disconnected; + + if (_status.value == ConnectionStatus.connected) { + /* Ignore return value for now */ + await _device.device.discoverServices(); + } } @override Future<void> disconnect() async { await _device.device.disconnect(); - _status = ConnectionStatus.disconnected; + _status.value = ConnectionStatus.disconnected; } @override - ConnectionStatus get status => _status; + ValueNotifier<ConnectionStatus> get status => _status; } diff --git a/lib/model/device/device.dart b/lib/model/device/device.dart index 98445fa..577ac9e 100644 --- a/lib/model/device/device.dart +++ b/lib/model/device/device.dart @@ -1,5 +1,20 @@ +// Copyright (C) 2025, uvok cheetah +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <https://www.gnu.org/licenses/>. + /// Represents a (badge) device to be connected to. -abstract class Device { +abstract interface class Device { String? get name; String? get address; int? get rssi; diff --git a/lib/model/device/flutter_blue_plus_device.dart b/lib/model/device/flutter_blue_plus_device.dart index e56223b..3f6102a 100644 --- a/lib/model/device/flutter_blue_plus_device.dart +++ b/lib/model/device/flutter_blue_plus_device.dart @@ -1,3 +1,18 @@ +// Copyright (C) 2025, uvok cheetah +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <https://www.gnu.org/licenses/>. + import 'package:uvok_epaper_badge/model/device/device.dart'; import 'package:flutter_blue_plus/flutter_blue_plus.dart'; import 'package:uvok_epaper_badge/utility.dart'; diff --git a/lib/model/device/mock_device.dart b/lib/model/device/mock_device.dart index 78770e1..94a6a9c 100644 --- a/lib/model/device/mock_device.dart +++ b/lib/model/device/mock_device.dart @@ -1,3 +1,18 @@ +// Copyright (C) 2025, uvok cheetah +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <https://www.gnu.org/licenses/>. + import 'package:uvok_epaper_badge/model/device/device.dart'; class MockDevice implements Device { diff --git a/lib/model/device/universal_ble_device.dart b/lib/model/device/universal_ble_device.dart index cbd6f93..0b6953f 100644 --- a/lib/model/device/universal_ble_device.dart +++ b/lib/model/device/universal_ble_device.dart @@ -1,3 +1,18 @@ +// Copyright (C) 2025, uvok cheetah +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <https://www.gnu.org/licenses/>. + import 'package:universal_ble/universal_ble.dart'; import 'package:uvok_epaper_badge/model/device/device.dart'; diff --git a/lib/model/motive_selection/badge_motive_selection.dart b/lib/model/motive_selection/badge_motive_selection.dart new file mode 100644 index 0000000..b6f2b9a --- /dev/null +++ b/lib/model/motive_selection/badge_motive_selection.dart @@ -0,0 +1,22 @@ +// Copyright (C) 2025, uvok cheetah +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <https://www.gnu.org/licenses/>. + +import 'package:uvok_epaper_badge/model/badge_motive.dart'; + +abstract interface class BadgeMotiveSelection { + Future<BadgeMotive> getCurrentMotive(); + Future<void> setCurrentMotive(BadgeMotive motive); + Future<List<BadgeMotive>> getMotives(); +} diff --git a/lib/model/motive_selection/badge_parser.dart b/lib/model/motive_selection/badge_parser.dart new file mode 100644 index 0000000..c4b4d58 --- /dev/null +++ b/lib/model/motive_selection/badge_parser.dart @@ -0,0 +1,37 @@ +// Copyright (C) 2025, uvok cheetah +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <https://www.gnu.org/licenses/>. + +import 'dart:convert'; + +import 'package:uvok_epaper_badge/model/badge_motive.dart'; +import 'package:uvok_epaper_badge/extensions/string_ext.dart'; + +mixin BadgeParser { + List<BadgeMotive> parseBadgeMotives(List<int> val) { + var templates = ascii.decode(val); + var x = templates + .split(";") + .where((s) => s.isNotEmpty) + .map((String s) { + List<String> parts = s.splitFirst("-"); + if (parts.length != 2) { + return BadgeMotive(-1, "Invalid value"); + } + return BadgeMotive(int.tryParse(parts[0]) ?? -1, parts[1]); + }) + .toList(growable: false); + return x; + } +} diff --git a/lib/model/motive_selection/flutter_blue_plus_motive_selection.dart b/lib/model/motive_selection/flutter_blue_plus_motive_selection.dart new file mode 100644 index 0000000..4046d83 --- /dev/null +++ b/lib/model/motive_selection/flutter_blue_plus_motive_selection.dart @@ -0,0 +1,127 @@ +// Copyright (C) 2025, uvok cheetah +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <https://www.gnu.org/licenses/>. + +import 'dart:convert'; + +import 'package:flutter_blue_plus/flutter_blue_plus.dart'; +import 'package:uvok_epaper_badge/model/device/flutter_blue_plus_device.dart'; +import 'package:uvok_epaper_badge/model/motive_selection/badge_parser.dart'; +import 'package:uvok_epaper_badge/badge_exception.dart'; +import 'package:uvok_epaper_badge/model/badge_motive.dart'; +import 'package:uvok_epaper_badge/model/motive_selection/badge_motive_selection.dart'; + +class FlutterBluePlusMotiveSelection + with BadgeParser + implements BadgeMotiveSelection { + final FlutterBluePlusDevice _device; + final String _badgeService = "ca260000-b4bb-46b2-bd06-b7b7a61ea990"; + final String _currentMotiveCharacteristic = + "ca260001-b4bb-46b2-bd06-b7b7a61ea990"; + final String _availableMotivesCharacteristic = + "ca260002-b4bb-46b2-bd06-b7b7a61ea990"; + bool _loadedServices = false; + + List<BadgeMotive> _cachedMotives = []; + + late final BluetoothDevice _fbpDevice; + + FlutterBluePlusMotiveSelection({required FlutterBluePlusDevice device}) + : _device = device { + _fbpDevice = _device.scanResult.device; + } + + @override + Future<BadgeMotive> getCurrentMotive() async { + await _ensureConnected(); + + if (_cachedMotives.isEmpty) { + await getMotives(); + } + if (_cachedMotives.isEmpty) { + throw BadgeException( + "No motives available, so there's no current motive", + ); + } + + try { + var serv = _fbpDevice.servicesList.firstWhere( + (s) => s.uuid.str == _badgeService, + ); + var c = serv.characteristics.firstWhere( + (c) => c.characteristicUuid.str == _currentMotiveCharacteristic, + ); + + var val = await c.read(); + int? currentMotive = int.tryParse(ascii.decode(val)); + if (currentMotive == null) { + throw BadgeException("Error reading current motive."); + } + return _cachedMotives.singleWhere( + (bm) => bm.id == currentMotive, + orElse: () => throw BadgeException("Selected motive not in templates"), + ); + } on StateError { + throw BadgeException("Characeristic/Service not found."); + } + } + + @override + Future<List<BadgeMotive>> getMotives() async { + await _ensureConnected(); + + try { + var serv = _fbpDevice.servicesList.firstWhere( + (s) => s.uuid.str == _badgeService, + ); + var c = serv.characteristics.firstWhere( + (c) => c.characteristicUuid.str == _availableMotivesCharacteristic, + ); + var val = await c.read(); + List<BadgeMotive> x = parseBadgeMotives(val); + _cachedMotives = x; + } on StateError { + throw BadgeException("Characeristic/Service not found."); + } + + return _cachedMotives; + } + + Future<void> _ensureConnected() async { + if (_fbpDevice.isDisconnected) { + throw BadgeException("Not connected"); + } + if (!_loadedServices) { + await _fbpDevice.discoverServices(); + _loadedServices = true; + } + } + + @override + Future<void> setCurrentMotive(BadgeMotive motive) async { + await _ensureConnected(); + try { + var serv = _fbpDevice.servicesList.firstWhere( + (s) => s.uuid.str == _badgeService, + ); + var c = serv.characteristics.firstWhere( + (c) => c.characteristicUuid.str == _currentMotiveCharacteristic, + ); + + await c.write(ascii.encode(motive.id.toString())); + } on StateError { + throw BadgeException("Characeristic/Service not found."); + } + } +} diff --git a/lib/model/motive_selection/mock_badge_motive_selection.dart b/lib/model/motive_selection/mock_badge_motive_selection.dart new file mode 100644 index 0000000..572da2a --- /dev/null +++ b/lib/model/motive_selection/mock_badge_motive_selection.dart @@ -0,0 +1,44 @@ +// Copyright (C) 2025, uvok cheetah +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <https://www.gnu.org/licenses/>. + +import 'package:uvok_epaper_badge/model/badge_motive.dart'; +import 'package:uvok_epaper_badge/model/motive_selection/badge_motive_selection.dart'; + +class MockBadgeMotiveSelection implements BadgeMotiveSelection { + static const List<BadgeMotive> templates = [ + BadgeMotive(0, "Foo"), + BadgeMotive(1, "Bar"), + BadgeMotive(2, "Baz"), + ]; + + BadgeMotive _currentMotive = templates[0]; + + @override + Future<BadgeMotive> getCurrentMotive() async { + return _currentMotive; + } + + @override + Future<List<BadgeMotive>> getMotives() { + return Future.delayed(Duration(milliseconds: 100), () => templates); + } + + @override + Future<void> setCurrentMotive(BadgeMotive motive) async { + return await Future.delayed(Duration(milliseconds: 300), () { + _currentMotive = motive; + }); + } +} diff --git a/lib/model/motive_selection/universal_blue_motive_selection.dart b/lib/model/motive_selection/universal_blue_motive_selection.dart new file mode 100644 index 0000000..084541a --- /dev/null +++ b/lib/model/motive_selection/universal_blue_motive_selection.dart @@ -0,0 +1,111 @@ +// Copyright (C) 2025, uvok cheetah +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <https://www.gnu.org/licenses/>. + +import 'dart:convert'; + +import 'package:universal_ble/universal_ble.dart'; +import 'package:uvok_epaper_badge/model/motive_selection/badge_parser.dart'; +import 'package:uvok_epaper_badge/badge_exception.dart'; +import 'package:uvok_epaper_badge/model/badge_motive.dart'; +import 'package:uvok_epaper_badge/model/device/universal_ble_device.dart'; +import 'package:uvok_epaper_badge/model/motive_selection/badge_motive_selection.dart'; + +class UniversalBlueMotiveSelection + with BadgeParser + implements BadgeMotiveSelection { + final UniversalBleDevice _device; + final String _badgeService = "ca260000-b4bb-46b2-bd06-b7b7a61ea990"; + final String _currentMotiveCharacteristic = + "ca260001-b4bb-46b2-bd06-b7b7a61ea990"; + final String _availableMotivesCharacteristic = + "ca260002-b4bb-46b2-bd06-b7b7a61ea990"; + + List<BadgeMotive> _cachedMotives = []; + + UniversalBlueMotiveSelection({required UniversalBleDevice device}) + : _device = device; + + @override + Future<BadgeMotive> getCurrentMotive() async { + await _ensureConnected(); + + if (_cachedMotives.isEmpty) { + await getMotives(); + } + if (_cachedMotives.isEmpty) { + throw BadgeException( + "No motives available, so there's no current motive", + ); + } + + try { + var c = await _device.device.getCharacteristic( + _currentMotiveCharacteristic, + service: _badgeService, + ); + + var val = await c.read(); + int? currentMotive = int.tryParse(ascii.decode(val)); + if (currentMotive == null) { + throw BadgeException("Error reading current motive."); + } + return _cachedMotives.singleWhere( + (bm) => bm.id == currentMotive, + orElse: () => throw BadgeException("Selected motive not in templates"), + ); + } on NotFoundException { + throw BadgeException("Characeristic/Service not found."); + } + } + + @override + Future<List<BadgeMotive>> getMotives() async { + await _ensureConnected(); + + try { + var c = await _device.device.getCharacteristic( + _availableMotivesCharacteristic, + service: _badgeService, + ); + var val = await c.read(); + _cachedMotives = parseBadgeMotives(val); + } on NotFoundException { + throw BadgeException("Characeristic/Service not found."); + } + + return _cachedMotives; + } + + Future<void> _ensureConnected() async { + if (await _device.device.connectionState != BleConnectionState.connected) { + throw BadgeException("Not connected"); + } + } + + @override + Future<void> setCurrentMotive(BadgeMotive motive) async { + await _ensureConnected(); + try { + var c = await _device.device.getCharacteristic( + _currentMotiveCharacteristic, + service: _badgeService, + ); + + await c.write(ascii.encode(motive.id.toString()), withResponse: true); + } on NotFoundException { + throw BadgeException("Characeristic/Service not found."); + } + } +} |