src/app/store/mail/reducers/loading/mail-loading.reducer.ts

/********************************************************************************
 * Copyright (c) 2020 Contributors to the Eclipse Foundation
 *
 * See the NOTICE file(s) distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0
 *
 * SPDX-License-Identifier: EPL-2.0
 ********************************************************************************/

import {createReducer, on} from "@ngrx/store";
import {setEmailLoadingStateAction} from "../../actions";
import {IMailLoadingState} from "../../model";

export const mailLoadingReducer = createReducer<IMailLoadingState>(
    undefined,
    on(setEmailLoadingStateAction, (state, payload) => {
        const result = {...state, ...payload.loading};
        return Object.values(result).some((_) => _) ? result : undefined;
    })
);