src/app/store/root/selectors/query-params.selectors.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 {createSelector} from "@ngrx/store";
import {rootStateSelector} from "./root.selectors";

export const queryParamsSelector = createSelector(
    rootStateSelector,
    (state) => state.queryParams
);

export const queryParamsIdSelector = createSelector(
    queryParamsSelector,
    (state): number => {
        if (state == null || state.id == null) {
            return undefined;
        }
        const id = typeof state.id === "string" ? parseInt(state.id, 10) : state.id;
        return Number.isInteger(id) ? id : undefined;
    }
);

export const queryParamsTaskIdSelector = createSelector(
    queryParamsSelector,
    (state): string => state?.taskId
);