112 lines
3.1 KiB
JavaScript
112 lines
3.1 KiB
JavaScript
// @flow
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import {
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takeLatest,
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takeEvery,
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select,
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put,
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apply,
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fork,
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// $FlowFixMe - I guarantee you ,it's in there.
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all
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} from 'redux-saga/effects';
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import HDKey from 'hdkey';
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import { publicToAddress, toChecksumAddress } from 'ethereumjs-util';
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import {
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setDeterministicWallets,
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updateDeterministicWallet
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} from 'actions/deterministicWallets';
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import { getWallets, getDesiredToken } from 'selectors/deterministicWallets';
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import { getNodeLib } from 'selectors/config';
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import { getTokens } from 'selectors/wallet';
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import type {
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DeterministicWalletData,
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GetDeterministicWalletsAction
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} from 'actions/deterministicWallets';
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import type { Effect } from 'redux-saga/effects';
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import type { BaseNode } from 'libs/nodes';
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import type { Token } from 'config/data';
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// TODO: BIP39 for mnemonic wallets?
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function* getDeterministicWallets(
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action?: GetDeterministicWalletsAction
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): Generator<Effect, void, any> {
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if (!action) return;
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const { publicKey, chainCode, limit, offset } = action.payload;
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const hdk = new HDKey();
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hdk.publicKey = new Buffer(publicKey, 'hex');
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hdk.chainCode = new Buffer(chainCode, 'hex');
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const wallets = [];
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for (let i = 0; i < limit; i++) {
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const index = i + offset;
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const dkey = hdk.derive(`m/${index}`);
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const address = publicToAddress(dkey.publicKey, true).toString('hex');
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wallets.push({
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index,
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address: toChecksumAddress(address),
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tokenValues: {}
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});
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}
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yield put(setDeterministicWallets(wallets));
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yield fork(updateWalletValues);
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yield fork(updateWalletTokenValues);
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}
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// Grab each wallet's main network token, and update it with it
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function* updateWalletValues() {
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const node: BaseNode = yield select(getNodeLib);
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const wallets: DeterministicWalletData[] = yield select(getWallets);
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const calls = wallets.map(w => apply(node, node.getBalance, [w.address]));
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const balances = yield all(calls);
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for (let i = 0; i < wallets.length; i++) {
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yield put(
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updateDeterministicWallet({
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...wallets[i],
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value: balances[i]
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})
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);
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}
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}
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// Grab the current desired token, and update the wallet with it
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function* updateWalletTokenValues() {
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const desiredToken: string = yield select(getDesiredToken);
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if (!desiredToken) return;
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const tokens: Token[] = yield select(getTokens);
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const token = tokens.find(t => t.symbol === desiredToken);
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if (!token) return;
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const node: BaseNode = yield select(getNodeLib);
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const wallets: DeterministicWalletData[] = yield select(getWallets);
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const calls = wallets.map(w => {
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return apply(node, node.getTokenBalance, [w.address, token]);
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});
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const tokenBalances = yield all(calls);
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for (let i = 0; i < wallets.length; i++) {
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yield put(
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updateDeterministicWallet({
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...wallets[i],
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tokenValues: {
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...wallets[i].tokenValues,
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[desiredToken]: tokenBalances[i]
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}
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})
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);
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}
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}
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export default function* deterministicWalletsSaga(): Generator<
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Effect,
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void,
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any
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> {
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yield takeLatest('DW_GET_WALLETS', getDeterministicWallets);
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yield takeEvery('DW_SET_DESIRED_TOKEN', updateWalletTokenValues);
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}
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