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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Traccar</title>
<link href="https://unpkg.com/@picocss/pico@2.0.6/css/pico.min.css" rel="stylesheet">
<link href="https://unpkg.com/maplibre-gl@4.1.2/dist/maplibre-gl.css" rel="stylesheet">
</head>
<body style="margin: 0; padding: 0;">
<div id="content" style="width: 100%; height: 100%; position:fixed;"></div>
<script src="https://unpkg.com/react@17/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@17/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/maplibre-gl@4.1.2/dist/maplibre-gl.js"></script>
<script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
<script type="text/babel">
const LoginScreen = ({ server, setServer, setUser }) => {
const [email, setEmail] = React.useState('');
const [password, setPassword] = React.useState('');
const handleSubmit = (event) => {
event.preventDefault();
const fetchData = async () => {
if (server.newServer) {
const response = await fetch('/api/users', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ name: email, email, password }),
});
if (response.ok) {
setServer({ ...server, newServer: false });
}
} else {
const query = `email=${encodeURIComponent(email)}&password=${encodeURIComponent(password)}`;
const response = await fetch('/api/session', {
method: 'POST',
body: new URLSearchParams(query),
});
if (response.ok) {
setUser(await response.json());
}
}
}
fetchData();
};
const formStyle = {
width: '320px',
margin: '32px',
display: 'flex',
flexDirection: 'column',
};
return (
<form onSubmit={handleSubmit} style={formStyle}>
<input
value={email}
onChange={(e) => setEmail(e.target.value)}
placeholder="Email"
/>
<input
password={password}
onChange={(e) => setPassword(e.target.value)}
placeholder="Password"
type="password"
/>
<button type="submit">
{server.newServer ? 'Register' : 'Login'}
</button>
</form>
);
};
const MainScreen = ({ setUser }) => {
const mapContainer = React.useRef();
const map = React.useRef();
React.useEffect(() => {
map.current = new maplibregl.Map({
container: mapContainer.current,
style: 'https://demotiles.maplibre.org/style.json',
center: [0, 0],
zoom: 1,
});
}, []);
const [devices, setDevices] = React.useState([]);
React.useEffect(() => {
const fetchData = async () => {
const devicesResponse = await fetch('/api/devices');
if (devicesResponse.ok) {
setDevices(await devicesResponse.json());
}
}
fetchData();
}, []);
const [initialized, setInitialized] = React.useState(false);
const [positions, setPositions] = React.useState({});
React.useEffect(() => {
if (initialized) {
const url = window.location.protocol + '//' + window.location.host;
const socket = new WebSocket('ws' + url.substring(4) + '/api/socket');
socket.onmessage = (event) => {
const data = JSON.parse(event.data);
const updatedPositions = {};
data.positions?.forEach((p) => updatedPositions[p.deviceId] = p);
setPositions({ ...positions, ...updatedPositions })
};
}
}, [initialized]);
const handleAddDevice = (event) => {
event.preventDefault();
const fetchData = async () => {
const id = prompt('Enter device id');
const response = await fetch('/api/devices', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
name: id,
uniqueId: id,
}),
});
if (response.ok) {
setDevices([...devices, await response.json()]);
}
}
fetchData();
};
const handleLogout = (event) => {
event.preventDefault();
const fetchData = async () => {
await fetch('/api/session', { method: 'DELETE' });
setUser(null);
}
fetchData();
};
React.useEffect(() => {
map.current.on('load', () => {
map.current.addSource('points', {
type: 'geojson',
data: {
type: 'FeatureCollection',
features: [],
},
});
map.current.addLayer({
id: 'points',
type: 'circle',
source: 'points',
});
setInitialized(true);
});
}, []);
React.useEffect(() => {
map.current.getSource('points')?.setData({
type: 'FeatureCollection',
features: Object.values(positions).map((position) => ({
type: 'Feature',
geometry: {
type: 'Point',
coordinates: [position.longitude, position.latitude],
},
})),
});
}, [positions]);
const containerStyle = {
width: '100%',
height: '100%',
display: 'flex',
};
const deviceStyle = {
width: '320px',
marginTop: '16px',
};
const mapStyle = {
height: '100%',
flexGrow: 1,
};
return (
<div style={containerStyle}>
<div style={deviceStyle}>
<ul>
{devices?.map((device) => (<li key={device.id}>{device.name}</li>))}
<li><a href="#" onClick={handleAddDevice}>Add device</a></li>
<li><a href="#" onClick={handleLogout}>Logout</a></li>
</ul>
</div>
<div style={mapStyle} ref={mapContainer}></div>
</div>
);
};
const App = () => {
const [server, setServer] = React.useState();
const [user, setUser] = React.useState();
React.useEffect(() => {
const fetchData = async () => {
const serverResponse = await fetch('/api/server');
if (serverResponse.ok) {
setServer(await serverResponse.json());
}
const sessionResponse = await fetch('/api/session');
if (sessionResponse.ok) {
setUser(await sessionResponse.json());
}
}
fetchData();
}, []);
return user ? (
<MainScreen
setUser={setUser}
/>
) : server ? (
<LoginScreen
server={server}
setServer={setServer}
setUser={setUser}
/>
) : '';
};
ReactDOM.render(<App />, document.getElementById('content'));
</script>
</body>
</html>
|
