82 lines
2.8 KiB
TypeScript
82 lines
2.8 KiB
TypeScript
import { AppState } from 'reducers';
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import { getTransactionState } from './transaction';
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import { getToken } from 'selectors/wallet';
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import { isNetworkUnit } from 'selectors/config/wallet';
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import { getDecimalFromEtherUnit } from 'libs/units';
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import { getSerializedTransaction } from 'selectors/transaction';
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import EthTx from 'ethereumjs-tx';
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import { getCustomTokens } from 'selectors/customTokens';
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import { getNetworkConfig } from 'selectors/config';
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import { Token } from '../../../shared/types/network';
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import { stripHexPrefixAndLower } from 'libs/values';
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import { toChecksumAddress } from 'ethereumjs-util';
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const getMetaState = (state: AppState) => getTransactionState(state).meta;
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const getFrom = (state: AppState) => {
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const serializedTransaction = getSerializedTransaction(state);
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// attempt to get the from address from the transaction
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if (serializedTransaction) {
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const transactionInstance = new EthTx(serializedTransaction);
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try {
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const from = transactionInstance.from;
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if (from) {
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return toChecksumAddress(from.toString('hex'));
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}
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} catch (e) {
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console.warn(e);
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}
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}
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return getMetaState(state).from;
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};
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const getDecimal = (state: AppState) => getMetaState(state).decimal;
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const getTokenTo = (state: AppState) => getMetaState(state).tokenTo;
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const getTokenValue = (state: AppState) => getMetaState(state).tokenValue;
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const getUnit = (state: AppState) => {
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const serializedTransaction = getSerializedTransaction(state);
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// attempt to get the to address from the transaction
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if (serializedTransaction) {
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const transactionInstance = new EthTx(serializedTransaction);
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const { to } = transactionInstance;
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if (to) {
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// see if any tokens match
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let networkTokens: null | Token[] = null;
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const customTokens = getCustomTokens(state);
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const networkConfig = getNetworkConfig(state);
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if (!networkConfig.isCustom) {
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networkTokens = networkConfig.tokens;
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}
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const mergedTokens = networkTokens ? [...networkTokens, ...customTokens] : customTokens;
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const stringTo = toChecksumAddress(stripHexPrefixAndLower(to.toString('hex')));
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const result = mergedTokens.find(t => t.address === stringTo);
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if (result) {
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return result.symbol;
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}
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}
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}
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return getMetaState(state).unit;
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};
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const getPreviousUnit = (state: AppState) => getMetaState(state).previousUnit;
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const getDecimalFromUnit = (state: AppState, unit: string) => {
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if (isNetworkUnit(state, unit)) {
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return getDecimalFromEtherUnit('ether');
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} else {
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const token = getToken(state, unit);
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if (!token) {
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throw Error(`Token ${unit} not found`);
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}
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return token.decimal;
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}
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};
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export {
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getFrom,
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getDecimal,
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getTokenValue,
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getTokenTo,
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getUnit,
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getPreviousUnit,
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getDecimalFromUnit
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};
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