/**
 * 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.io.IOException;
import java.net.URI;
import java.util.Collections;
import java.util.Iterator;
import java.util.Map;
import java.util.stream.Collectors;
import javax.json.JsonObject;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;

/**
 * Listed volumes.
 * @author Marco Teixeira ([email protected])
 * @version $Id: d5eed8ee1b4468e7ac5197e1d79d9e5affdc4915 $
 * @since 0.0.6
 */
final class ListedVolumes extends RtVolumes {

    /**
     * Volume filters.
     */
    private final Map<String, Iterable<String>> filters;

    /**
     * Ctor.
     * @param client The http client.
     * @param uri The URI for this Images API.
     * @param dkr The docker entry point.
     */
    ListedVolumes(final HttpClient client, final URI uri, final Docker dkr) {
        this(client, uri, dkr, Collections.emptyMap());
    }

    /**
     * Ctor with filters.
     * @param client The http client.
     * @param uri The URI for this Images API.
     * @param dkr The docker entry point.
     * @param filters Volume filters.
     * @checkstyle ParameterNumber (3 lines)
     */
    ListedVolumes(final HttpClient client, final URI uri,
        final Docker dkr, final Map<String, Iterable<String>> filters) {
        super(client, uri, dkr);
        this.filters = filters;
    }

    @Override
    public Iterator<Volume> iterator() {
        final FilteredUriBuilder uri = new FilteredUriBuilder(
            new UncheckedUriBuilder(super.baseUri().toString()), this.filters
        );
        final HttpGet get = new HttpGet(uri.build());
        try {
            return super.client().execute(
                get,
                new ReadJsonObject(
                    new MatchStatus(get.getURI(), HttpStatus.SC_OK)
                )
            ).getJsonArray("Volumes").stream()
                .map(json -> (JsonObject) json)
                .map(
                    volume -> (Volume) new RtVolume(
                        volume,
                        super.client(),
                        URI.create(
                            String.format("%s/%s",
                                super.baseUri().toString(),
                                volume.getString("Name")
                            )
                        ),
                        super.docker()
                    )
                ).collect(Collectors.toList())
                .iterator();
        } catch (final IOException err) {
            throw new RuntimeException(
                String.format("Error executing GET on %s", super.baseUri())
            );
        } finally {
            get.releaseConnection();
        }
    }
}