/*
    * #%L
    * wcm.io
    * %%
    * Copyright (C) 2014 wcm.io
    * %%
    * 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.
   * #L%
   */
  package io.wcm.handler.media;
  
  import java.awt.Rectangle;
  import java.awt.geom.Rectangle2D;
  
  import org.apache.commons.lang3.StringUtils;
  import org.apache.commons.lang3.builder.EqualsBuilder;
  import org.apache.commons.lang3.builder.HashCodeBuilder;
  import org.apache.commons.lang3.builder.ToStringBuilder;
  import org.apache.commons.lang3.builder.ToStringStyle;
  import org.apache.commons.lang3.math.NumberUtils;
  import org.jetbrains.annotations.NotNull;
  import org.osgi.annotation.versioning.ProviderType;
  
  /**
   * Crop dimension with left, top, width and height as integer.
   */
  @ProviderType
  public final class CropDimension extends Dimension {
  
    private final long left;
    private final long top;
    private final boolean autoCrop;
  
    /**
     * @param left Left in pixels
     * @param top Top in pixels
     * @param width Width in pixels
     * @param height Height in pixels
     */
    public CropDimension(long left, long top, long width, long height) {
      this(left, top, width, height, false);
    }
  
    /**
     * @param left Left in pixels
     * @param top Top in pixels
     * @param width Width in pixels
     * @param height Height in pixels
     * @param autoCrop Mark this dimension as auto-cropped
     */
    public CropDimension(long left, long top, long width, long height, boolean autoCrop) {
      super(width, height);
      this.left = left;
      this.top = top;
      this.autoCrop = autoCrop;
    }
  
    /**
     * @return Left in pixels
     */
    public long getLeft() {
      return this.left;
    }
  
    /**
     * @return Top in pixels
     */
    public long getTop() {
      return this.top;
    }
  
    /**
     * @return Right in pixels
     */
    public long getRight() {
      return getLeft() + getWidth();
    }
  
    /**
     * @return Bottom in pixels
     */
    public long getBottom() {
      return getTop() + getHeight();
    }
  
    /**
     * @return true if is dimenions is marked as auto-cropped
     */
    public boolean isAutoCrop() {
     return this.autoCrop;
   }
 
   @Override
   public int hashCode() {
     return HashCodeBuilder.reflectionHashCode(this);
   }
 
   @Override
   public boolean equals(Object obj) {
     return EqualsBuilder.reflectionEquals(this, obj);
   }
 
   @Override
   public String toString() {
     return new ToStringBuilder(this, ToStringStyle.NO_CLASS_NAME_STYLE)
         .append("left", getLeft())
         .append("top", getTop())
         .append("width", getWidth())
         .append("height", getHeight())
         .build();
   }
 
   /**
    * @return Crop string with left,top,right,bottom.
    */
   public @NotNull String getCropString() {
     return getLeft() + "," + getTop() + "," + getRight() + "," + getBottom();
   }
 
   /**
    * @return Crop string with left,top,width,height.
    */
   public @NotNull String getCropStringWidthHeight() {
     return getLeft() + "," + getTop() + "," + getWidth() + "," + getHeight();
   }
 
   /**
    * @return Rectangle
    */
   public @NotNull Rectangle2D getRectangle() {
     return new Rectangle((int)getLeft(), (int)getTop(), (int)getWidth(), (int)getHeight());
   }
 
   /**
    * Get crop dimension from crop string.
    * Please note: Crop string contains not width/height as 3rd/4th parameter but right, bottom.
    * @param cropString Cropping string from AEM inplace editor
    * @return Crop dimension instance
    * @throws IllegalArgumentException if crop string syntax is invalid
    */
   @SuppressWarnings("java:S1192") // ignore duplicated strings
   public static @NotNull CropDimension fromCropString(@NotNull String cropString) {
     if (StringUtils.isEmpty(cropString)) {
       throw new IllegalArgumentException("Invalid crop string: '" + cropString + "'.");
     }
 
     // strip off optional size parameter after "/"
     String crop = cropString;
     if (StringUtils.contains(crop, "/")) {
       crop = StringUtils.substringBefore(crop, "/");
     }
 
     String[] parts = StringUtils.split(crop, ",");
     if (parts.length != 4) {
       throw new IllegalArgumentException("Invalid crop string: '" + cropString + "'.");
     }
     long x1 = NumberUtils.toLong(parts[0]);
     long y1 = NumberUtils.toLong(parts[1]);
     long x2 = NumberUtils.toLong(parts[2]);
     long y2 = NumberUtils.toLong(parts[3]);
     long width = x2 - x1;
     long height = y2 - y1;
     if (x1 < 0 || y1 < 0 || width <= 0 || height <= 0) {
       throw new IllegalArgumentException("Invalid crop string: '" + cropString + "'.");
     }
     return new CropDimension(x1, y1, width, height);
   }
 
 }