1 files changed, 111 insertions, 0 deletions
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
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--- /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.");
+    }
+  }
+}