src/app/store/statements/selectors/statements.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 {createFeatureSelector, createSelector} from "@ngrx/store";
import {entitiesToArray} from "../../../util";
import {queryParamsIdSelector} from "../../root/selectors";
import {IStatementEntity, IStatementsStoreState} from "../model";
import {STATEMENTS_FEATURE_NAME} from "../statements-reducers.token";

export const statementsStateSelector = createFeatureSelector<IStatementsStoreState>(STATEMENTS_FEATURE_NAME);

export const statementsListSelector = createSelector(
    statementsStateSelector,
    (state) => entitiesToArray(state?.entities)
);

export const unfinishedStatementsListSelector = createSelector(
    statementsListSelector,
    (list) => list.filter((statement) => !statement.finished)
);

export const finishedStatementsListSelector = createSelector(
    statementsListSelector,
    (list) => list.filter((statement) => statement.finished)
);

export const statementSelector = createSelector(
    statementsStateSelector,
    queryParamsIdSelector,
    (state, statementId, props: { statementId: number }): IStatementEntity => {
        statementId = props?.statementId != null ? props.statementId : statementId;
        return state?.entities == null || statementId == null ? undefined : state.entities[statementId];
    }
);