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const ObservableStore = require('obs-store')
const extend = require('xtend')
const PhishingDetector = require('eth-phishing-detect/src/detector')
// compute phishing lists
const PHISHING_DETECTION_CONFIG = require('eth-phishing-detect/src/config.json')
// every four minutes
const POLLING_INTERVAL = 4 * 60 * 1000
class BlacklistController {
constructor (opts = {}) {
const initState = extend({
phishing: PHISHING_DETECTION_CONFIG,
}, opts.initState)
this.store = new ObservableStore(initState)
// phishing detector
this._phishingDetector = null
this._setupPhishingDetector(initState.phishing)
// polling references
this._phishingUpdateIntervalRef = null
}
//
// PUBLIC METHODS
//
checkForPhishing (hostname) {
if (!hostname) return false
const { result } = this._phishingDetector.check(hostname)
return result
}
async updatePhishingList () {
const response = await fetch('https://api.infura.io/v2/blacklist')
const phishing = await response.json()
this.store.updateState({ phishing })
this._setupPhishingDetector(phishing)
return phishing
}
scheduleUpdates () {
if (this._phishingUpdateIntervalRef) return
this.updatePhishingList().catch(log.warn)
this._phishingUpdateIntervalRef = setInterval(() => {
this.updatePhishingList().catch(log.warn)
}, POLLING_INTERVAL)
}
//
// PRIVATE METHODS
//
_setupPhishingDetector (config) {
this._phishingDetector = new PhishingDetector(config)
}
}
module.exports = BlacklistController
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