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/*
 * Copyright Google Inc.
 *
 * 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.google.android.gcm.server;

import java.io.Serializable;
import java.util.Collections;
import java.util.List;

/**
 * GCM message notification part.
 *
 * 
 * Instances of this class are immutable and should be created using a
 * {@link Builder}. Examples:
 *
 * Simplest notification:
 * 

 * Notification notification = new Notification.Builder("myicon").build();
 * 
 *
 * Notification with optional attributes:
 * 
 * Notification notification = new Notification.Builder("myicon")
 *    .title("Hello world!")
 *    .body("Here is a more detailed description")
 *    .build();
 * 
 */
public final class Notification implements Serializable {

  private final String title;
  private final String body;
  private final String icon;
  private final String sound;
  private final Integer badge;
  private final String tag;
  private final String color;
  private final String clickAction;
  private final String bodyLocKey;
  private final List bodyLocArgs;
  private final String titleLocKey;
  private final List titleLocArgs;

  public static final class Builder {

    // required parameters
    private final String icon;

    // optional parameters
    private String title;
    private String body;
    private String sound;
    private Integer badge;
    private String tag;
    private String color;
    private String clickAction;
    private String bodyLocKey;
    private List bodyLocArgs;
    private String titleLocKey;
    private List titleLocArgs;

    public Builder(String icon) {
      this.icon = icon;
      this.sound = "default"; // the only currently supported value
    }

    /**
     * Sets the title property.
     */
    public Builder title(String value) {
      title = value;
      return this;
    }

    /**
     * Sets the body property.
     */
    public Builder body(String value) {
      body = value;
      return this;
    }

    /**
     * Sets the sound property (default value is {@literal default}).
     */
    public Builder sound(String value) {
      sound = value;
      return this;
    }

    /**
     * Sets the badge property.
     */
    public Builder badge(int value) {
      badge = value;
      return this;
    }

    /**
     * Sets the tag property.
     */
    public Builder tag(String value) {
      tag = value;
      return this;
    }

    /**
     * Sets the color property in {@literal #rrggbb} format.
     */
    public Builder color(String value) {
      color = value;
      return this;
    }

    /**
     * Sets the click action property.
     */
    public Builder clickAction(String value) {
      clickAction = value;
      return this;
    }

    /**
     * Sets the body localization key property.
     */
    public Builder bodyLocKey(String value) {
      bodyLocKey = value;
      return this;
    }

    /**
     * Sets the body localization values property.
     */
    public Builder bodyLocArgs(List value) {
      bodyLocArgs = Collections.unmodifiableList(value);
      return this;
    }

    /**
     * Sets the title localization key property.
     */
    public Builder titleLocKey(String value) {
      titleLocKey = value;
      return this;
    }

    /**
     * Sets the title localization values property.
     */
    public Builder titleLocArgs(List value) {
      titleLocArgs = Collections.unmodifiableList(value);
      return this;
    }

    public Notification build() {
      return new Notification(this);
    }

  }

  private Notification(Builder builder) {
    title = builder.title;
    body = builder.body;
    icon = builder.icon;
    sound = builder.sound;
    badge = builder.badge;
    tag = builder.tag;
    color = builder.color;
    clickAction = builder.clickAction;
    bodyLocKey = builder.bodyLocKey;
    bodyLocArgs = builder.bodyLocArgs;
    titleLocKey = builder.titleLocKey;
    titleLocArgs = builder.titleLocArgs;
  }

  /**
   * Gets the title.
   */
  public String getTitle() {
    return title;
  }

  /**
   * Gets the body.
   */
  public String getBody() {
    return body;
  }

  /**
   * Gets the icon.
   */
  public String getIcon() {
    return icon;
  }

  /**
   * Gets the sound.
   */
  public String getSound() {
    return sound;
  }

  /**
   * Gets the badge.
   */
  public Integer getBadge() {
    return badge;
  }

  /**
   * Gets the tag.
   */
  public String getTag() {
    return tag;
  }

  /**
   * Gets the color.
   */
  public String getColor() {
    return color;
  }

  /**
   * Gets the click action.
   */
  public String getClickAction() {
    return clickAction;
  }

  /**
   * Gets the body localization key.
   */
  public String getBodyLocKey() {
    return bodyLocKey;
  }

  /**
   * Gets the body localization values list, which is immutable.
   */
  public List getBodyLocArgs() {
    return bodyLocArgs;
  }

  /**
   * Gets the title localization key.
   */
  public String getTitleLocKey() {
    return titleLocKey;
  }

  /**
   * Gets the title localization values list, which is immutable.
   */
  public List getTitleLocArgs() {
    return titleLocArgs;
  }

  @Override
  public String toString() {
    StringBuilder builder = new StringBuilder("Notification(");
    if (title != null) {
      builder.append("title=").append(title).append(", ");
    }
    if (body != null) {
      builder.append("body=").append(body).append(", ");
    }
    if (icon != null) {
      builder.append("icon=").append(icon).append(", ");
    }
    if (sound != null) {
      builder.append("sound=").append(sound).append(", ");
    }
    if (badge != null) {
      builder.append("badge=").append(badge).append(", ");
    }
    if (tag != null) {
      builder.append("tag=").append(tag).append(", ");
    }
    if (color != null) {
      builder.append("color=").append(color).append(", ");
    }
    if (clickAction != null) {
      builder.append("clickAction=").append(clickAction).append(", ");
    }
    if (bodyLocKey != null) {
      builder.append("bodyLocKey=").append(bodyLocKey).append(", ");
    }
    if (bodyLocArgs != null) {
      builder.append("bodyLocArgs=").append(bodyLocArgs).append(", ");
    }
    if (titleLocKey != null) {
      builder.append("titleLocKey=").append(titleLocKey).append(", ");
    }
    if (titleLocArgs != null) {
      builder.append("titleLocArgs=").append(titleLocArgs).append(", ");
    }
    if (builder.charAt(builder.length() - 1) == ' ') {
      builder.delete(builder.length() - 2, builder.length());
    }
    builder.append(")");
    return builder.toString();
  }

}