|
1
|
|
|
/*jslint node: true, nomen: true, regexp: true, plusplus: true */ |
|
2
|
1 |
|
(function () { |
|
3
|
|
|
|
|
4
|
|
|
"use strict"; |
|
5
|
|
|
|
|
6
|
1 |
|
const request = require("request"), |
|
7
|
|
|
RateLimiter = require("limiter").RateLimiter; |
|
8
|
|
|
|
|
9
|
|
|
class BlockUtils { |
|
10
|
|
|
|
|
11
|
|
|
constructor(apiUrl, magicToken, signalApiUrl, perSecondRateLimit) |
|
12
|
|
|
{ |
|
13
|
1 |
|
this.API_URL = apiUrl; |
|
14
|
1 |
|
this.MAGIC_TOKEN = magicToken; |
|
15
|
1 |
|
this.SIGNAL_API_URL = signalApiUrl; |
|
16
|
1 |
|
this.limiter = new RateLimiter(perSecondRateLimit, 'second'); |
|
17
|
|
|
} |
|
18
|
|
|
|
|
19
|
|
|
/** |
|
20
|
|
|
* Allow to use callback-style methods with promises |
|
21
|
|
|
* @param {Array} args Original function arguments |
|
22
|
|
|
* @param {Number} optionsOffset Expected offset of the options object in the arguments |
|
23
|
|
|
* @callback |
|
24
|
|
|
* @private |
|
25
|
|
|
*/ |
|
26
|
|
|
_handlePromises(args, optionsOffset, callback) { |
|
27
|
129 |
|
let fCallback = args[args.length - 1]; |
|
28
|
129 |
|
const checkArgsAndGo = (options = {}) => { |
|
29
|
129 |
|
if (args[optionsOffset] !== fCallback) { |
|
30
|
113 |
|
options = args[optionsOffset]; |
|
31
|
|
|
} |
|
32
|
129 |
|
callback(options, fCallback); |
|
33
|
|
|
}; |
|
34
|
129 |
|
if (typeof fCallback === "function") { |
|
35
|
23 |
|
return checkArgsAndGo(); |
|
36
|
|
|
} |
|
37
|
106 |
|
return new Promise((resolve, reject) => { |
|
38
|
106 |
|
fCallback = (err, res) => { |
|
39
|
106 |
|
if (err) { return reject(err); } |
|
40
|
84 |
|
return resolve(res); |
|
41
|
|
|
}; |
|
42
|
106 |
|
checkArgsAndGo(); |
|
43
|
|
|
}); |
|
44
|
|
|
} |
|
45
|
|
|
|
|
46
|
|
|
/** |
|
47
|
|
|
* Make and return the call to the API |
|
48
|
|
|
* @param endpoint |
|
49
|
|
|
* @param callback |
|
50
|
|
|
* @private |
|
51
|
|
|
*/ |
|
52
|
|
|
call() { |
|
53
|
39 |
|
return this._handlePromises(arguments, 1, ({ |
|
54
|
|
|
useSignalAPI = false, |
|
55
|
|
|
method = "GET", |
|
56
|
|
|
body = null |
|
57
|
|
|
} = {}, callback) => { |
|
58
|
39 |
|
this.limiter.removeTokens(1, () => { |
|
59
|
39 |
|
request({ |
|
60
|
|
|
method: method, |
|
61
|
|
|
url: ((useSignalAPI) ? this.SIGNAL_API_URL : this.API_URL) + arguments[0], |
|
62
|
|
|
headers: {"magic": this.MAGIC_TOKEN}, |
|
63
|
|
|
body: body |
|
64
|
|
|
}, (err, result, body) => { |
|
65
|
39 |
|
try { |
|
66
|
39 |
|
const tBody = JSON.parse(body); |
|
67
|
|
|
|
|
68
|
22 |
|
return callback(null, tBody); |
|
69
|
|
|
} catch (e) { |
|
70
|
|
|
// Exceptions for plain text responses |
|
71
|
17 |
|
if (body === "success") { |
|
72
|
14 |
|
return callback(null, body); |
|
73
|
3 |
|
} else if (body === "fail") { |
|
74
|
|
|
return callback(new Error("FAIL")); |
|
75
|
|
|
} |
|
76
|
|
|
|
|
77
|
3 |
|
return callback(e, body); |
|
78
|
|
|
} |
|
79
|
|
|
}); |
|
80
|
|
|
}); |
|
81
|
|
|
}); |
|
82
|
|
|
} |
|
83
|
|
|
|
|
84
|
|
|
/** |
|
85
|
|
|
* Parse and format a token pair |
|
86
|
|
|
* @param tokenStr String containing the token (ie. "XRP/BTC", "AEON", "USD-LTC", ...) |
|
87
|
|
|
* @returns {*} Structure with base & token values (default base is BTC) |
|
88
|
|
|
* @private |
|
89
|
|
|
*/ |
|
90
|
|
|
parseToken(tokenStr) { |
|
91
|
|
|
// Token is already parsed |
|
92
|
33 |
|
if (typeof tokenStr === "object") { return tokenStr; } |
|
93
|
|
|
|
|
94
|
|
|
// Check token format |
|
95
|
27 |
|
if (tokenStr.indexOf("/") > -1) { // Classic representation |
|
96
|
22 |
|
const [token, base] = tokenStr.split("/"); |
|
97
|
22 |
|
return {base, token}; |
|
98
|
5 |
|
} else if(tokenStr.indexOf("-") > -1) { // Inversed one |
|
99
|
3 |
|
const [base, token] = tokenStr.split("-"); |
|
100
|
3 |
|
return {base, token}; |
|
101
|
|
|
} else { // Raw token without attached base |
|
102
|
2 |
|
return {base: "BTC", token: tokenStr}; |
|
103
|
|
|
} |
|
104
|
|
|
} |
|
105
|
|
|
|
|
106
|
|
|
/** |
|
107
|
|
|
* Create a new fake device to use with Blockfolio & return the Blockfolio instance |
|
108
|
|
|
* @callback |
|
109
|
|
|
* @private |
|
110
|
|
|
*/ |
|
111
|
|
|
generateClientToken() { |
|
112
|
1 |
|
return parseInt(Math.random().toString().substring(2)).toString(12); |
|
113
|
|
|
} |
|
114
|
|
|
} |
|
115
|
|
|
|
|
116
|
1 |
|
module.exports = BlockUtils; |
|
117
|
|
|
|
|
118
|
|
|
})(); |
bob6664569 /
blockfolio-api-client
