MyCrypto/common/reducers/customTokens.js

40 lines
921 B
JavaScript

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