send/server/amplitude.js at master · ROODAY/send · GitHub

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
const crypto = require('crypto');
const fetch = require('node-fetch');
const config = require('./config');
const pkg = require('../package.json');

const HOUR = 1000 * 60 * 60;

function truncateToHour(timestamp) {
  return Math.floor(timestamp / HOUR) * HOUR;
}

function orderOfMagnitude(n) {
  return Math.floor(Math.log10(n));
}

function userId(fileId, ownerId) {
  const hash = crypto.createHash('sha256');
  hash.update(fileId);
  hash.update(ownerId);
  return hash.digest('hex').substring(32);
}

function statUploadEvent(data) {
  const event = {
    session_id: -1,
    country: data.country,
    region: data.state,
    user_id: userId(data.id, data.owner),
    app_version: pkg.version,
    time: truncateToHour(Date.now()),
    event_type: 'server_upload',
    user_properties: {
      download_limit: data.dlimit,
      time_limit: data.timeLimit,
      size: orderOfMagnitude(data.size),
      anonymous: data.anonymous
    },
    event_properties: {
      agent: data.agent
    },
    event_id: 0
  };
  return sendBatch([event]);
}

function statDownloadEvent(data) {
  const event = {
    session_id: -1,
    country: data.country,
    region: data.state,
    user_id: userId(data.id, data.owner),
    app_version: pkg.version,
    time: truncateToHour(Date.now()),
    event_type: 'server_download',
    event_properties: {
      agent: data.agent,
      download_count: data.download_count,
      ttl: data.ttl
    },
    event_id: data.download_count
  };
  return sendBatch([event]);
}

function statDeleteEvent(data) {
  const event = {
    session_id: -1,
    country: data.country,
    region: data.state,
    user_id: userId(data.id, data.owner),
    app_version: pkg.version,
    time: truncateToHour(Date.now()),
    event_type: 'server_delete',
    event_properties: {
      agent: data.agent,
      download_count: data.download_count,
      ttl: data.ttl
    },
    event_id: data.download_count + 1
  };
  return sendBatch([event]);
}

function statReportEvent(data) {
  const event = {
    session_id: -1,
    country: data.country,
    region: data.state,
    user_id: userId(data.id, data.owner),
    app_version: pkg.version,
    time: truncateToHour(Date.now()),
    event_type: 'server_report',
    event_properties: {
      reason: data.reason,
      agent: data.agent,
      download_limit: data.dlimit,
      download_count: data.download_count,
      ttl: data.ttl
    },
    event_id: data.download_count + 1
  };
  return sendBatch([event]);
}

function clientEvent(
  event,
  ua,
  language,
  session_id,
  deltaT,
  platform,
  country,
  state
) {
  const ep = event.event_properties || {};
  const up = event.user_properties || {};
  const event_properties = {
    browser: ua.browser.name,
    browser_version: ua.browser.version,
    status: ep.status,

    age: ep.age,
    downloaded: ep.downloaded,
    download_limit: ep.download_limit,
    duration: ep.duration,
    entrypoint: ep.entrypoint,
    file_count: ep.file_count,
    password_protected: ep.password_protected,
    referrer: ep.referrer,
    size: ep.size,
    time_limit: ep.time_limit,
    trigger: ep.trigger,
    ttl: ep.ttl,
    utm_campaign: ep.utm_campaign,
    utm_content: ep.utm_content,
    utm_medium: ep.utm_medium,
    utm_source: ep.utm_source,
    utm_term: ep.utm_term,
    experiment: ep.experiment,
    variant: ep.variant
  };
  const user_properties = {
    active_count: up.active_count,
    anonymous: up.anonymous,
    experiments: up.experiments,
    first_action: up.first_action
  };
  return {
    app_version: pkg.version,
    country: country,
    device_id: event.device_id,
    event_properties,
    event_type: event.event_type,
    language,
    os_name: ua.os.name,
    os_version: ua.os.version,
    platform,
    region: state,
    session_id,
    time: event.time + deltaT,
    user_id: event.user_id,
    user_properties
  };
}

async function sendBatch(events, timeout = 1000) {
  if (!config.amplitude_id) {
    return 200;
  }
  try {
    const result = await fetch('https://api.amplitude.com/batch', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        api_key: config.amplitude_id,
        events
      }),
      timeout
    });
    return result.status;
  } catch (e) {
    return 500;
  }
}

module.exports = {
  statUploadEvent,
  statDownloadEvent,
  statDeleteEvent,
  statReportEvent,
  clientEvent,
  sendBatch
};