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hitbtc.js
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hitbtc.js
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import Exchange from '../services/exchange'
class Hitbtc extends Exchange {
constructor(options) {
super(options)
this.id = 'hitbtc'
this.endpoints = {
PRODUCTS: 'https://api.hitbtc.com/api/2/public/symbol',
TRADES: () => `https://api.hitbtc.com/api/2/public/trades/${this.pair}?sort=DESC&limit=500`
}
this.options = Object.assign(
{
url: 'wss://api.hitbtc.com/api/2/ws'
},
this.options
)
this.initialize()
}
connect() {
const validation = super.connect()
if (!validation) return Promise.reject()
else if (validation instanceof Promise) return validation
return new Promise((resolve, reject) => {
this.api = new WebSocket(this.getUrl())
this.api.onmessage = event => this.queueTrades(this.formatLiveTrades(JSON.parse(event.data)))
this.api.onopen = e => {
this.api.send(
JSON.stringify({
method: 'subscribeTrades',
params: {
symbol: this.pair
}
})
)
resolve()
this.emitOpen(e)
}
this.api.onclose = this.emitClose.bind(this)
this.api.onerror = () => {
this.emitError({ message: `${this.id} disconnected` })
reject()
}
})
}
disconnect() {
if (!super.disconnect()) {
return
}
if (this.api && this.api.readyState < 2) {
this.api.close()
}
}
formatLiveTrades(json) {
if (!json) {
return
}
if (json.method === 'updateTrades' && json.params && json.params.data && json.params.data.length) {
return json.params.data.map(trade => ({
exchange: this.id,
timestamp: +new Date(trade.timestamp),
price: +trade.price,
size: +trade.quantity,
side: trade.side
}))
}
}
/* formatRecentsTrades(response) {
if (response && response.length) {
return response.map(trade => [
this.id,
+new Date(trade.timestamp),
+trade.price,
+trade.quantity,
trade.side === 'buy' ? 1 : 0
]);
}
} */
formatProducts(data) {
return data.map(a => a.id)
}
}
export default Hitbtc