migration #9 - break out CurrencyController substate
kumavis
8 years ago
parent
b233e7e37c
commit
9e4ef45b6a
@ -0,0 +1,70 @@ |
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const ObservableStore = require('obs-store') |
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const extend = require('xtend') |
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// every ten minutes
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const POLLING_INTERVAL = 600000 |
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class CurrencyController { |
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constructor (opts = {}) { |
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const initState = extend({ |
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currentCurrency: 'USD', |
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conversionRate: 0, |
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conversionDate: 'N/A', |
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}, opts.initState) |
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this.store = new ObservableStore(initState) |
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} |
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//
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// PUBLIC METHODS
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//
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getCurrentCurrency () { |
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return this.store.getState().currentCurrency |
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} |
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setCurrentCurrency (currentCurrency) { |
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this.store.updateState({ currentCurrency }) |
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} |
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getConversionRate () { |
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return this.store.getState().conversionRate |
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} |
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setConversionRate (conversionRate) { |
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this.store.updateState({ conversionRate }) |
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} |
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getConversionDate () { |
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return this.store.getState().conversionDate |
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} |
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setConversionDate (conversionDate) { |
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this.store.updateState({ conversionDate }) |
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} |
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updateConversionRate () { |
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const currentCurrency = this.getCurrentCurrency() |
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return fetch(`https://www.cryptonator.com/api/ticker/eth-${currentCurrency}`) |
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.then(response => response.json()) |
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.then((parsedResponse) => { |
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this.setConversionRate(Number(parsedResponse.ticker.price)) |
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this.setConversionDate(Number(parsedResponse.timestamp)) |
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}).catch((err) => { |
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console.warn('MetaMask - Failed to query currency conversion.') |
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this.setConversionRate(0) |
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this.setConversionDate('N/A') |
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}) |
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} |
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scheduleConversionInterval () { |
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if (this.conversionInterval) { |
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clearInterval(this.conversionInterval) |
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} |
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this.conversionInterval = setInterval(() => { |
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this.updateConversionRate() |
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}, POLLING_INTERVAL) |
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} |
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} |
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module.exports = CurrencyController |
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@ -0,0 +1,40 @@ |
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const version = 9 |
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/* |
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This migration breaks out the CurrencyController substate |
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*/ |
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const merge = require('deep-merge') |
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module.exports = { |
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version,
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migrate: function (versionedData) { |
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versionedData.meta.version = version |
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try { |
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const state = versionedData.data |
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const newState = transformState(state) |
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versionedData.data = newState |
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} catch (err) { |
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console.warn(`MetaMask Migration #${version}` + err.stack) |
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} |
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return Promise.resolve(versionedData) |
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}, |
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} |
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function transformState (state) { |
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const newState = merge(state, { |
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CurrencyController: { |
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currentCurrency: state.currentFiat || 'USD', |
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conversionRate: state.conversionRate, |
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conversionDate: state.conversionDate, |
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}, |
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}) |
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delete newState.currentFiat |
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delete newState.conversionRate |
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delete newState.conversionDate |
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return newState |
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} |
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@ -0,0 +1,87 @@ |
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// polyfill fetch
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global.fetch = global.fetch || require('isomorphic-fetch') |
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const assert = require('assert') |
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const extend = require('xtend') |
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const rp = require('request-promise') |
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const nock = require('nock') |
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const CurrencyController = require('../../app/scripts/lib/controllers/currency') |
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describe('config-manager', function() { |
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var currencyController |
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beforeEach(function() { |
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currencyController = new CurrencyController() |
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}) |
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describe('currency conversions', function() { |
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describe('#setCurrentCurrency', function() { |
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it('should return USD as default', function() { |
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assert.equal(currencyController.getCurrentCurrency(), 'USD') |
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}) |
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it('should be able to set to other currency', function() { |
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assert.equal(currencyController.getCurrentCurrency(), 'USD') |
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currencyController.setCurrentCurrency('JPY') |
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var result = currencyController.getCurrentCurrency() |
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assert.equal(result, 'JPY') |
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}) |
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}) |
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describe('#getConversionRate', function() { |
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it('should return undefined if non-existent', function() { |
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var result = currencyController.getConversionRate() |
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assert.ok(!result) |
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}) |
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}) |
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describe('#updateConversionRate', function() { |
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it('should retrieve an update for ETH to USD and set it in memory', function(done) { |
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this.timeout(15000) |
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var usdMock = nock('https://www.cryptonator.com') |
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.get('/api/ticker/eth-USD') |
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.reply(200, '{"ticker":{"base":"ETH","target":"USD","price":"11.02456145","volume":"44948.91745289","change":"-0.01472534"},"timestamp":1472072136,"success":true,"error":""}') |
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assert.equal(currencyController.getConversionRate(), 0) |
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currencyController.setCurrentCurrency('USD') |
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currencyController.updateConversionRate() |
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.then(function() { |
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var result = currencyController.getConversionRate() |
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console.log('currencyController.getConversionRate:', result) |
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assert.equal(typeof result, 'number') |
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done() |
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}).catch(function(err) { |
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done(err) |
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}) |
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}) |
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it('should work for JPY as well.', function() { |
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this.timeout(15000) |
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assert.equal(currencyController.getConversionRate(), 0) |
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var jpyMock = nock('https://www.cryptonator.com') |
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.get('/api/ticker/eth-JPY') |
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.reply(200, '{"ticker":{"base":"ETH","target":"JPY","price":"11.02456145","volume":"44948.91745289","change":"-0.01472534"},"timestamp":1472072136,"success":true,"error":""}') |
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var promise = new Promise( |
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function (resolve, reject) { |
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currencyController.setCurrentCurrency('JPY') |
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currencyController.updateConversionRate().then(function() { |
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resolve() |
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}) |
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}) |
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promise.then(function() { |
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var result = currencyController.getConversionRate() |
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assert.equal(typeof result, 'number') |
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}).catch(function(err) { |
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done(err) |
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}) |
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}) |
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}) |
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}) |
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}) |
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