const ObservableStore = require('obs-store') const normalizeAddress = require('eth-sig-util').normalize const extend = require('xtend') class PreferencesController { constructor (opts = {}) { const initState = extend({ frequentRpcList: [], currentAccountTab: 'history', tokens: [], useBlockie: false, featureFlags: {}, }, opts.initState) this.store = new ObservableStore(initState) } // PUBLIC METHODS setUseBlockie (val) { this.store.updateState({ useBlockie: val }) } getUseBlockie () { return this.store.getState().useBlockie } setSelectedAddress (_address) { return new Promise((resolve, reject) => { const address = normalizeAddress(_address) this.store.updateState({ selectedAddress: address }) resolve() }) } getSelectedAddress () { return this.store.getState().selectedAddress } async addToken (rawAddress, symbol, decimals) { const address = normalizeAddress(rawAddress) const newEntry = { address, symbol, decimals } const tokens = this.store.getState().tokens const previousEntry = tokens.find((token, index) => { return token.address === address }) const previousIndex = tokens.indexOf(previousEntry) if (previousEntry) { tokens[previousIndex] = newEntry } else { tokens.push(newEntry) } this.store.updateState({ tokens }) return Promise.resolve(tokens) } removeToken (rawAddress) { const tokens = this.store.getState().tokens const updatedTokens = tokens.filter(token => token.address !== rawAddress) this.store.updateState({ tokens: updatedTokens }) return Promise.resolve(updatedTokens) } getTokens () { return this.store.getState().tokens } updateFrequentRpcList (_url) { return this.addToFrequentRpcList(_url) .then((rpcList) => { this.store.updateState({ frequentRpcList: rpcList }) return Promise.resolve() }) } setCurrentAccountTab (currentAccountTab) { return new Promise((resolve, reject) => { this.store.updateState({ currentAccountTab }) resolve() }) } addToFrequentRpcList (_url) { const rpcList = this.getFrequentRpcList() const index = rpcList.findIndex((element) => { return element === _url }) if (index !== -1) { rpcList.splice(index, 1) } if (_url !== 'http://localhost:8545') { rpcList.push(_url) } if (rpcList.length > 2) { rpcList.shift() } return Promise.resolve(rpcList) } getFrequentRpcList () { return this.store.getState().frequentRpcList } setFeatureFlag (feature, activated) { const currentFeatureFlags = this.store.getState().featureFlags const updatedFeatureFlags = { ...currentFeatureFlags, [feature]: activated, } this.store.updateState({ featureFlags: updatedFeatureFlags }) return Promise.resolve(updatedFeatureFlags) } getFeatureFlags () { return this.store.getState().featureFlags } // // PRIVATE METHODS // } module.exports = PreferencesController