/**

  * Copyright (c) 2012-2015, jcabi.com

  * 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 the jcabi.com 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.jcabi.odesk;

 import com.jcabi.aspects.Immutable;

 import com.jcabi.aspects.Loggable;

 import com.jcabi.http.Request;

 import com.jcabi.http.RequestURI;

 import com.jcabi.http.response.JsonResponse;

 import com.jcabi.http.response.RestResponse;

 import java.io.IOException;

 import java.math.BigDecimal;

 import java.net.HttpURLConnection;

 import java.util.ArrayList;

 import java.util.Collection;

 import javax.json.JsonString;

 import javax.validation.constraints.NotNull;

 import lombok.EqualsAndHashCode;

 import lombok.ToString;

 /**

  * RESTful {@link Adjustments}.

  *

  * @author Yegor Bugayenko (yegor@tpc2.com)

  * @version $Id: b8bb2cf74be022b5ad523accf1c6ed1e2856b7bb $

  * @since 0.1

  */

 @Immutable

 @ToString

 @Loggable(Loggable.DEBUG)

 @EqualsAndHashCode(of = "entry")

 final class RtAdjustments implements Adjustments {

     /**

      * Request to use.

      */

     private final transient Request entry;

     /**

      * Public ctor.

      * @param req Request

      * @param name Team ref/name

      */

     RtAdjustments(final Request req, final String name) {

         this.entry = req.uri()

             .path("v2/teams")

             .path(name)

             .path("adjustments.json")

             .back();

     }

     // @checkstyle ParameterNumber (10 lines)

     @Override

     @NotNull(message = "adjustment ID is never NULL")

     public String add(

         @NotNull(message = "engagement ref can't be NULL")

         final String engagement,

         @NotNull(message = "charge amount can't be NULL")

         final BigDecimal charge,

         @NotNull(message = "comments can't be NULL") final String comments,

         @NotNull(message = "notes can't be NULL") final String notes)

         throws IOException {

         RequestURI uri = this.entry.uri()

             .queryParam("engagement__reference", engagement)

             .queryParam("comments", comments)

             .queryParam("notes", notes);

         if (charge != null && charge.compareTo(BigDecimal.ZERO) != 0) {

             uri = uri.queryParam("charge_amount", charge.toString());

         }

         return uri.back().method(Request.POST).fetch()

             .as(RestResponse.class)

             .assertStatus(HttpURLConnection.HTTP_OK)

             .as(JsonResponse.class)

             .json().readObject().getJsonObject("adjustment")

             .getString("reference");

     }

     @Override

     @NotNull(message = "iterable of adjustments is never NULL")

     public Iterable<String> iterate() throws IOException {

         final Collection<JsonString> values = this.entry.fetch()

             .as(RestResponse.class)

             .assertStatus(HttpURLConnection.HTTP_OK)

             .as(JsonResponse.class)

             .json().readObject().getJsonArray("adjustments")

             .getValuesAs(JsonString.class);

         final Collection<String> refs = new ArrayList<String>(values.size());

         for (final JsonString val : values) {

             refs.add(val.getString());

         }

         return refs;

     }

 }