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/* @flow */
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import BigNumber from 'bignumber.js';
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import type {
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State,
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Device,
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TrezorDevice,
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Account,
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Coin,
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Discovery,
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Token,
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PendingTx,
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Web3Instance,
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} from 'flowtype';
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export const getSelectedDevice = (state: State): ?TrezorDevice => {
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const locationState = state.router.location.state;
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if (!locationState.device) return undefined;
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const instance: ?number = locationState.deviceInstance ? parseInt(locationState.deviceInstance, 10) : undefined;
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return state.devices.find((d) => {
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if (!d.features && d.path === locationState.device) {
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return true;
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} if (d.features && d.features.bootloader_mode && d.path === locationState.device) {
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return true;
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} if (d.features && d.features.device_id === locationState.device && d.instance === instance) {
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return true;
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}
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return false;
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});
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};
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//
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export const isSelectedDevice = (current: ?TrezorDevice, device: ?TrezorDevice): boolean => !!((current && device && (current.path === device.path && current.instance === device.instance)));
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// find device by id and state
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export const findDevice = (devices: Array<TrezorDevice>, deviceId: string, deviceState: string, instance: ?number): ?TrezorDevice => devices.find((d) => {
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// TODO: && (instance && d.instance === instance)
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if (d.features && d.features.device_id === deviceId && d.state === deviceState) {
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return true;
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}
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return false;
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});
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// get next instance number
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export const getDuplicateInstanceNumber = (devices: Array<TrezorDevice>, device: Device | TrezorDevice): number => {
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// find device(s) with the same features.device_id
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// and sort them by instance number
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const affectedDevices: Array<TrezorDevice> = devices.filter(d => d.features && device.features && d.features.device_id === device.features.device_id)
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.sort((a, b) => {
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if (!a.instance) {
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return -1;
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}
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return !b.instance || a.instance > b.instance ? 1 : -1;
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});
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// calculate new instance number
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const instance: number = affectedDevices.reduce((inst, dev) => (dev.instance ? dev.instance + 1 : inst + 1), 0);
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return instance;
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};
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export const getSelectedAccount = (state: State): ?Account => {
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const device = state.wallet.selectedDevice;
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const locationState = state.router.location.state;
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if (!device || !locationState.network || !locationState.account) return null;
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const index: number = parseInt(locationState.account, 10);
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return state.accounts.find(a => a.deviceState === device.state && a.index === index && a.network === locationState.network);
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};
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export const getSelectedNetwork = (state: State): ?Coin => {
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const device = state.wallet.selectedDevice;
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const { coins } = state.localStorage.config;
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const locationState = state.router.location.state;
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if (!device || !locationState.network) return null;
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return coins.find(c => c.network === locationState.network);
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};
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export const getDiscoveryProcess = (state: State): ?Discovery => {
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const device = state.wallet.selectedDevice;
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const locationState = state.router.location.state;
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if (!device || !locationState.network) return null;
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return state.discovery.find(d => d.deviceState === device.state && d.network === locationState.network);
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};
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export const getAccountPendingTx = (pending: Array<PendingTx>, account: ?Account): Array<PendingTx> => {
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const a = account;
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if (!a) return [];
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return pending.filter(p => p.network === a.network && p.address === a.address);
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};
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export const getPendingNonce = (pending: Array<PendingTx>): number => pending.reduce((value: number, tx: PendingTx) => {
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if (tx.rejected) return value;
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return Math.max(value, tx.nonce + 1);
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}, 0);
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export const getPendingAmount = (pending: Array<PendingTx>, currency: string, token: boolean = false): BigNumber => pending.reduce((value: BigNumber, tx: PendingTx) => {
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if (tx.currency === currency && !tx.rejected) {
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return new BigNumber(value).plus(token ? tx.amount : tx.total);
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}
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return value;
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}, new BigNumber('0'));
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export const getAccountTokens = (state: State, account: ?Account): Array<Token> => {
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const a = account;
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if (!a) return [];
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return state.tokens.filter(t => t.ethAddress === a.address && t.network === a.network && t.deviceState === a.deviceState);
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};
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export const getWeb3 = (state: State): ?Web3Instance => {
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const locationState = state.router.location.state;
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if (!locationState.network) return null;
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return state.web3.find(w3 => w3.network === locationState.network);
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};
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export const observeChanges = (prev: ?(Object | Array<any>), current: ?(Object | Array<any>), fields?: Array<string>): boolean => {
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if (prev !== current) {
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// 1. one of the objects is null/undefined
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if (!prev || !current) return true;
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// 2. object are Arrays and they have different length
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if (Array.isArray(prev) && Array.isArray(current)) return prev.length !== current.length;
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// 3. no nested field to check
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if (!Array.isArray(fields)) return true;
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// 4. validate nested field
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if (prev instanceof Object && current instanceof Object) {
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for (let i = 0; i < fields.length; i++) {
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const key = fields[i];
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if (Array.isArray(prev[key]) && Array.isArray(current[key]) && prev[key].length !== current[key].length) return true;
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if (prev[key] !== current[key]) return true;
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}
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}
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}
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return false;
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};
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