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const ObservableStore = require('obs-store')
const extend = require('xtend')
const recentBlacklist = require('etheraddresslookup/blacklists/domains.json')
// every ten minutes
const POLLING_INTERVAL = 300000
class InfuraController {
constructor (opts = {}) {
const initState = extend({
infuraNetworkStatus: {},
blacklist: recentBlacklist,
}, opts.initState)
this.store = new ObservableStore(initState)
}
//
// PUBLIC METHODS
//
// Responsible for retrieving the status of Infura's nodes. Can return either
// ok, degraded, or down.
checkInfuraNetworkStatus () {
return fetch('https://api.infura.io/v1/status/metamask')
.then(response => response.json())
.then((parsedResponse) => {
this.store.updateState({
infuraNetworkStatus: parsedResponse,
})
return parsedResponse
})
}
updateLocalBlacklist () {
return fetch('https://api.infura.io/v1/blacklist')
.then(response => response.json())
.then((parsedResponse) => {
this.store.updateState({
blacklist: parsedResponse,
})
return parsedResponse
})
}
scheduleInfuraNetworkCheck () {
if (this.conversionInterval) {
clearInterval(this.conversionInterval)
}
this.conversionInterval = setInterval(() => {
this.checkInfuraNetworkStatus()
this.updateLocalBlacklist()
}, POLLING_INTERVAL)
}
}
module.exports = InfuraController
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