40 lines
921 B
JavaScript
40 lines
921 B
JavaScript
// @flow
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import type {
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CustomTokenAction,
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AddCustomTokenAction,
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RemoveCustomTokenAction
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} from 'actions/customTokens';
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import type { Token } from 'config/data';
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export type State = Token[];
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export const INITIAL_STATE: State = [];
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function addCustomToken(state: State, action: AddCustomTokenAction): State {
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if (state.find(token => token.symbol === action.payload.symbol)) {
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return state;
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}
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return [...state, action.payload];
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}
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function removeCustomToken(
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state: State,
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action: RemoveCustomTokenAction
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): State {
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return state.filter(token => token.symbol !== action.payload);
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}
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export function customTokens(
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state: State = INITIAL_STATE,
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action: CustomTokenAction
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): State {
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switch (action.type) {
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case 'CUSTOM_TOKEN_ADD':
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return addCustomToken(state, action);
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case 'CUSTOM_TOKEN_REMOVE':
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return removeCustomToken(state, action);
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default:
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return state;
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}
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}
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