/*
    * Copyright (C) 2012 Atlassian
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    *     http://www.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.atlassian.jira.rest.client.domain.input;
  
  import com.atlassian.jira.rest.client.domain.BasicUser;
  import com.atlassian.jira.rest.client.domain.Visibility;
  import com.google.common.base.Objects;
  import org.joda.time.DateTime;
  
  import javax.annotation.Nullable;
  import java.net.URI;
  
  /**
   * Represents worklog item in JIRA. Is used to create new worklog or update existing one.
   * Contains also estimate adjustment options which are used only to adjust change of remaining
   * estimate (adjustEstimate and adjustEstimateValue).<br/>
   * Possible values for adjustEstimate and adjustEstimateValue are:<br/>
   * <li>When adjustEstimate is set to {@link AdjustEstimate#AUTO} or {@link AdjustEstimate#LEAVE} adjustEstimateValue
   * is not used</li>
   * <li>When adjustEstimate is set to {@link AdjustEstimate#NEW} then remaining estimate is set to adjustEstimateValue</li>
   * <li>When adjustEstimate is set to {@link AdjustEstimate#MANUAL} then remaining estimate is reduced by adjustEstimateValue</li>
   */
  public class WorklogInput {
  	@Nullable
  	private final URI self;
  	private final URI issueUri;
  	@Nullable
  	private final BasicUser author;
  	@Nullable
  	private final BasicUser updateAuthor;
  	@Nullable
  	private final String comment;
  	private final DateTime startDate;
  	private final int minutesSpent;
  	@Nullable
  	private final Visibility visibility;
  
  	@Nullable
  	private final String adjustEstimateValue;
  	private final AdjustEstimate adjustEstimate;
  
  	/**
  	 * Creates new WorklogInput with given values
  	 * @param self URI to this worklog, pass null if this is new worklog item.
  	 * @param issueUri URI to destination issue
  	 * @param author author of this worklog
  	 * @param updateAuthor author of worklog actualization
  	 * @param comment comment attached to worklog
  	 * @param startDate date of work start
  	 * @param minutesSpent time spend in minutes
  	 * @param visibility visibility settings for this worklog
  	 * @param adjustEstimate adjust estimate option
  	 * @param adjustEstimateValue value for estimate adjustment. Only used when adjustEstimate is set
  	 *                               to {@link AdjustEstimate#NEW} or {@link AdjustEstimate#MANUAL}
  	 */
  	public WorklogInput(@Nullable URI self, URI issueUri, @Nullable BasicUser author, @Nullable BasicUser updateAuthor,
  			@Nullable String comment, DateTime startDate, int minutesSpent, @Nullable Visibility visibility,
  			AdjustEstimate adjustEstimate, @Nullable String adjustEstimateValue) {
  		this.visibility = visibility;
  		this.minutesSpent = minutesSpent;
  		this.startDate = startDate;
  		this.comment = comment;
  		this.updateAuthor = updateAuthor;
  		this.author = author;
  		this.issueUri = issueUri;
  		this.self = self;
  		this.adjustEstimate = adjustEstimate;
  		this.adjustEstimateValue = adjustEstimateValue;
  	}
  
  	/**
  	 * Creates new WorklogInput with given values. Sets adjust estimate option to default value - {@link AdjustEstimate#AUTO}.
  	 * @param self URI to this worklog, pass null if this is new worklog item.
  	 * @param issueUri URI to destination issue
  	 * @param author author of this worklog
  	 * @param updateAuthor author of worklog actualization
  	 * @param comment comment attached to worklog
  	 * @param startDate date of work start
  	 * @param minutesSpent time spend in minutes
  	 * @param visibility visibility settings for this worklog
  	 */
  	public WorklogInput(@Nullable URI self, URI issueUri, @Nullable BasicUser author, @Nullable BasicUser updateAuthor,
  			@Nullable String comment, DateTime startDate, int minutesSpent, @Nullable Visibility visibility) {
  		this(self, issueUri, author, updateAuthor, comment, startDate, minutesSpent, visibility, AdjustEstimate.AUTO, null);
  	}
 
 	public static WorklogInput create(URI issueUri, @Nullable String comment, DateTime startDate, int minutesSpent) {
 		return new WorklogInputBuilder(issueUri).setComment(comment).setStartDate(startDate).setMinutesSpent(minutesSpent).build();
 	}
 
 	public static WorklogInput create(URI issueUri, @Nullable String comment, DateTime startDate, int minutesSpent, @Nullable Visibility visibility) {
 		return new WorklogInputBuilder(issueUri).setComment(comment).setStartDate(startDate).setMinutesSpent(minutesSpent)
 				.setVisibility(visibility).build();
 	}
 
 	@Nullable
 	public URI getSelf() {
 		return self;
 	}
 
 	public URI getIssueUri() {
 		return issueUri;
 	}
 
 	@Nullable
 	public BasicUser getAuthor() {
 		return author;
 	}
 
 	@Nullable
 	public BasicUser getUpdateAuthor() {
 		return updateAuthor;
 	}
 
 	@Nullable
 	public String getComment() {
 		return comment;
 	}
 
 	public DateTime getStartDate() {
 		return startDate;
 	}
 
 	public int getMinutesSpent() {
 		return minutesSpent;
 	}
 
 	@Nullable
 	public Visibility getVisibility() {
 		return visibility;
 	}
 
 	public AdjustEstimate getAdjustEstimate() {
 		return adjustEstimate;
 	}
 
 	@Nullable
 	public String getAdjustEstimateValue() {
 		return adjustEstimateValue;
 	}
 
 	@Override
 	public String toString() {
 		return Objects.toStringHelper(this)
 				.add("self", self)
 				.add("issueUri", issueUri)
 				.add("author", author)
 				.add("updateAuthor", updateAuthor)
 				.add("comment", comment)
 				.add("startDate", startDate)
 				.add("minutesSpent", minutesSpent)
 				.add("visibility", visibility)
 				.add("adjustEstimate", adjustEstimate)
 				.add("adjustEstimateValue", adjustEstimateValue)
 				.toString();
 	}
 
 	@Override
 	public boolean equals(Object obj) {
 		if (obj instanceof WorklogInput) {
 			final WorklogInput that = (WorklogInput) obj;
 
 			return Objects.equal(this.self, that.self)
 					&& Objects.equal(this.issueUri, that.issueUri)
 					&& Objects.equal(this.author, that.author)
 					&& Objects.equal(this.updateAuthor, that.updateAuthor)
 					&& Objects.equal(this.comment, that.comment)
 					&& Objects.equal(this.startDate, that.startDate)
 					&& Objects.equal(this.minutesSpent, that.minutesSpent)
 					&& Objects.equal(this.visibility, that.visibility)
 					&& Objects.equal(this.adjustEstimate, that.adjustEstimate)
 					&& Objects.equal(this.adjustEstimateValue, that.adjustEstimateValue);
 		}
 		return false;
 	}
 
 	@Override
 	public int hashCode() {
 		return Objects.hashCode(self, issueUri, author, updateAuthor, comment, startDate, minutesSpent, visibility,
 				adjustEstimate, adjustEstimateValue);
 	}
 
 	public static enum AdjustEstimate {
 		/**
 		 * Set remaining estimate to given value.
 		 */
 		NEW,
 		/**
 		 * Leave estimate as is.
 		 */
 		LEAVE,
 		/**
 		 * Decrease estimate manually by given value.
 		 */
 		MANUAL,
 		/**
 		 * Automatically decrease estimate based on given time spent. This is the default value.
 		 */
 		AUTO;
 
 		public final String restValue;
 
 		private AdjustEstimate() {
 			restValue = this.name().toLowerCase();
 		}
 	}
 }