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package fr.ird.observe.spi.context;

/*-
 * #%L
 * ObServe Toolkit :: Service
 * %%
 * Copyright (C) 2017 - 2021 Ultreia.io
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program.  If not, see
 * .
 * #L%
 */

import fr.ird.observe.dto.data.OpenableDto;
import fr.ird.observe.dto.reference.DataDtoReference;
import fr.ird.observe.dto.referential.ReferentialLocale;
import fr.ird.observe.spi.ServicesProvider;
import fr.ird.observe.spi.decoration.DecoratorService;

import java.util.Comparator;
import java.util.List;
import java.util.Objects;
import java.util.function.Supplier;
import java.util.stream.Collectors;
import java.util.stream.Stream;

/**
 * Created on 17/10/2020.
 *
 * @author Tony Chemit - [email protected]
 * @since 8.0.1
 */
public class OpenableDtoServiceContext {

    /**
     * Data type.
     */
    private final Class dtoType;
    /**
     * Reference type.
     */
    private final Class referenceType;
    /**
     * To sort references.
     */
    private final Comparator referenceComparator;
    /**
     * To create a new reference.
     */
    private final Supplier referenceConstructor;

    public static  OpenableDtoServiceContext of(Class dtoType, Class referenceType, Comparator referenceComparator, Supplier referenceConstructor) {
        return new OpenableDtoServiceContext<>(dtoType, referenceType, referenceComparator, referenceConstructor);
    }

    public OpenableDtoServiceContext(Class dtoType, Class referenceType, Comparator referenceComparator, Supplier referenceConstructor) {
        this.dtoType = Objects.requireNonNull(dtoType);
        this.referenceType = Objects.requireNonNull(referenceType);
        this.referenceComparator = Objects.requireNonNull(referenceComparator);
        this.referenceConstructor = Objects.requireNonNull(referenceConstructor);
    }

    public EmptyChildrenDataReferenceSet newEmptyChildrenDataReferenceSet(String parentId, int initialCount, ServicesProvider servicesProvider, DecoratorService decoratorService) {
        return new EmptyChildrenDataReferenceSet<>(parentId, initialCount, this, servicesProvider, decoratorService);
    }

    public Class getDtoType() {
        return dtoType;
    }

    public Class getReferenceType() {
        return referenceType;
    }

    public Comparator getReferenceComparator() {
        return referenceComparator;
    }

    @SuppressWarnings("unused")
    public R newReference(ReferentialLocale referentialLocale) {
        return referenceConstructor.get();
    }

    public List sort(Stream stream) {
        return stream.sorted(referenceComparator).collect(Collectors.toList());
    }

//    public List initChildrenDataReferenceSet(Collection children, DecoratorService decoratorService) {
//        List result = new ArrayList<>(children);
//        result.sort(getReferenceComparator());
//        decoratorService.installDecorator(referenceType, result.stream());
//        return result;
//    }
}