MyCrypto/common/reducers/customTokens.ts

34 lines
963 B
TypeScript

import {
AddCustomTokenAction,
CustomTokenAction,
RemoveCustomTokenAction
} from 'actions/customTokens';
import { TypeKeys } from 'actions/customTokens/constants';
import { 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 TypeKeys.CUSTOM_TOKEN_ADD:
return addCustomToken(state, action);
case TypeKeys.CUSTOM_TOKEN_REMOVE:
return removeCustomToken(state, action);
default:
return state;
}
}