69 lines
1.8 KiB
TypeScript
69 lines
1.8 KiB
TypeScript
import { AppState } from 'reducers';
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import { getNetworkConfig } from 'selectors/config';
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import { getUnit, getParamsFromSerializedTx } from 'selectors/transaction';
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import BN from 'bn.js';
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import { Wei, TokenValue } from 'libs/units';
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export const getRates = (state: AppState) => state.rates;
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const getUSDConversionRate = (state: AppState, unit: string) => {
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const { isTestnet } = getNetworkConfig(state);
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const { rates } = getRates(state);
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if (isTestnet) {
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return null;
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}
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const conversionRate = rates[unit];
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if (!conversionRate) {
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return null;
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}
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return conversionRate.USD;
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};
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export const getValueInUSD = (state: AppState, value: TokenValue | Wei) => {
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const unit = getUnit(state);
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const conversionRate = getUSDConversionRate(state, unit);
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if (!conversionRate) {
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return null;
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}
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const sendValueUSD = value.muln(conversionRate);
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return sendValueUSD;
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};
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export const getTransactionFeeInUSD = (state: AppState, fee: Wei) => {
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const { unit } = getNetworkConfig(state);
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const conversionRate = getUSDConversionRate(state, unit);
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if (!conversionRate) {
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return null;
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}
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const feeValueUSD = fee.muln(conversionRate);
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return feeValueUSD;
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};
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export interface AllUSDValues {
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valueUSD: BN | null;
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feeUSD: BN | null;
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totalUSD: BN | null;
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}
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export const getAllUSDValuesFromSerializedTx = (state: AppState): AllUSDValues => {
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const fields = getParamsFromSerializedTx(state);
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if (!fields) {
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return {
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feeUSD: null,
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valueUSD: null,
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totalUSD: null
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};
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}
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const { currentValue, fee } = fields;
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const valueUSD = getValueInUSD(state, currentValue);
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const feeUSD = getTransactionFeeInUSD(state, fee);
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return {
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feeUSD,
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valueUSD,
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totalUSD: feeUSD && valueUSD ? valueUSD.add(feeUSD) : null
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};
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};
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