MyCrypto/common/reducers/rates.ts

41 lines
998 B
TypeScript

import { FetchCCRatesSucceeded, RatesAction, CCResponse } from 'actions/rates';
import { TypeKeys } from 'actions/rates/constants';
import { Optional } from 'utils/types';
// SYMBOL -> PRICE TO BUY 1 ETH
export interface State {
rates?: Optional<CCResponse>;
ratesError?: string | null;
}
export const INITIAL_STATE: State = {};
function fetchCCRatesSucceeded(
state: State,
action: FetchCCRatesSucceeded
): State {
return { ...state, rates: action.payload };
}
function fetchCCRatesFailed(state: State): State {
// TODO: Make library for error messages
return {
...state,
ratesError: 'Sorry. We were unable to fetch equivalent rates.'
};
}
export function rates(
state: State = INITIAL_STATE,
action: RatesAction
): State {
switch (action.type) {
case TypeKeys.RATES_FETCH_CC_SUCCEEDED:
return fetchCCRatesSucceeded(state, action);
case TypeKeys.RATES_FETCH_CC_FAILED:
return fetchCCRatesFailed(state);
default:
return state;
}
}