/**
 * Copyright (c) 2018-2019, Mihai Emil Andronache
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 1)Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 2)Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * 3)Neither the name of docker-java-api nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package com.amihaiemil.docker;

import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;
import java.util.Map;
import javax.json.Json;
import javax.json.JsonArrayBuilder;
import javax.json.JsonObjectBuilder;
import org.apache.http.NameValuePair;
import org.apache.http.client.utils.URIBuilder;

/**
 * {@link URIBuilder} with filtering.
 * @author Paulo Lobo ([email protected])
 * @version $Id: 530eb671dda2e582213800d66d17a24f20f61d1d $
 * @since 0.0.7
 */
final class FilteredUriBuilder extends URIBuilder {

    /**
     * Wrapped {@link URIBuilder}.
     */
    private final URIBuilder origin;


    /**
     * Constructor.
     *
     * @param builder Wrapped builder.
     * @param filters Filters.
     */
    FilteredUriBuilder(final URIBuilder builder,
        final Map<String, Iterable<String>> filters){
        this.origin = builder;
        this.addFilters(filters);
    }

    @Override
    public URI build() {
        try {
            return this.origin.build();
        } catch (final URISyntaxException ex) {
            throw new IllegalStateException(
                "Unexpected error while building a URI!", ex
            );
        }
    }

    @Override
    public List<NameValuePair> getQueryParams() {
        return this.origin.getQueryParams();
    }

    /**
     * Adds a JSON encoded `filters` parameter.
     * @param filters Filters.
     */
    private void addFilters(final Map<String, Iterable<String>> filters) {
        if (filters != null && !filters.isEmpty()) {
            final JsonObjectBuilder json = Json.createObjectBuilder();
            filters.forEach(
                (name, values) -> {
                    final JsonArrayBuilder array = Json.createArrayBuilder();
                    values.forEach(array::add);
                    json.add(name, array);
                }
            );
            this.origin.addParameter("filters", json.build().toString());
        }


    }
}