1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
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.");
}
}
}
|
