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replaced old rate service as angular controller

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Ivan Socolsky 2014-11-06 11:34:52 -03:00
commit 505951a0b1
2 changed files with 8 additions and 83 deletions
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5
js/models/RateService.js
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@ -13,6 +13,9 @@ var request = require('request');
var RateService = function(opts) {
var self = this;
opts = opts || {};
self.request = opts.request || request;
self.SAT_TO_BTC = 1 / 1e8;
self.BTC_TO_SAT = 1e8;
self.UNAVAILABLE_ERROR = 'Service is not available - check for service.isAvailable() or use service.whenAvailable()';
@ -44,7 +47,7 @@ RateService.prototype._fetchCurrencies = function() {
var updateFrequencySeconds = 3600;
var rateServiceUrl = 'https://bitpay.com/api/rates';
request.get({
self.request.get({
url: rateServiceUrl,
json: true
}, function(err, res, body) {

86
js/services/rate.js
View file

@ -1,85 +1,7 @@
'use strict';
var MINS_IN_HOUR = 60;
var MILLIS_IN_SECOND = 1000;
var RateService = function(request) {
this.isAvailable = false;
this.UNAVAILABLE_ERROR = 'Service is not available - check for service.isAvailable or use service.whenAvailable';
this.SAT_TO_BTC = 1 / 1e8;
this.BTC_TO_SAT = 1e8;
var rateServiceConfig = config.rate;
var updateFrequencySeconds = rateServiceConfig.updateFrequencySeconds || 60 * MINS_IN_HOUR;
var rateServiceUrl = rateServiceConfig.url || 'https://bitpay.com/api/rates';
this.queued = [];
this.alternatives = [];
var self = this;
var backoffSeconds = 5;
var retrieve = function() {
request.get({
url: rateServiceUrl,
json: true
}, function(err, response, listOfCurrencies) {
if (err) {
backoffSeconds *= 1.5;
setTimeout(retrieve, backoffSeconds * MILLIS_IN_SECOND);
return;
}
var rates = {};
listOfCurrencies.forEach(function(element) {
rates[element.code] = element.rate;
self.alternatives.push({
name: element.name,
isoCode: element.code,
rate: element.rate
});
});
self.isAvailable = true;
self.rates = rates;
self.queued.forEach(function(callback) {
setTimeout(callback, 1);
});
setTimeout(retrieve, updateFrequencySeconds * MILLIS_IN_SECOND);
});
};
retrieve();
};
RateService.prototype.whenAvailable = function(callback) {
if (this.isAvailable) {
setTimeout(callback, 1);
} else {
this.queued.push(callback);
}
};
RateService.prototype.toFiat = function(satoshis, code) {
if (!this.isAvailable) {
throw new Error(this.UNAVAILABLE_ERROR);
}
return satoshis * this.SAT_TO_BTC * this.rates[code];
};
RateService.prototype.fromFiat = function(amount, code) {
if (!this.isAvailable) {
throw new Error(this.UNAVAILABLE_ERROR);
}
return amount / this.rates[code] * this.BTC_TO_SAT;
};
RateService.prototype.listAlternatives = function() {
if (!this.isAvailable) {
throw new Error(this.UNAVAILABLE_ERROR);
}
var alts = [];
this.alternatives.forEach(function(element) {
alts.push({
name: element.name,
isoCode: element.isoCode
});
angular.module('copayApp.services').factory('rateService', function(request) {
return copay.RateService.singleton({
request: request
});
return alts;
};
angular.module('copayApp.services').service('rateService', RateService);
});