/*
    * Copyright (c) 2011-2024 PrimeFaces Extensions
    *
    *  Permission is hereby granted, free of charge, to any person obtaining a copy
    *  of this software and associated documentation files (the "Software"), to deal
    *  in the Software without restriction, including without limitation the rights
    *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    *  copies of the Software, and to permit persons to whom the Software is
    *  furnished to do so, subject to the following conditions:
   *
   *  The above copyright notice and this permission notice shall be included in
   *  all copies or substantial portions of the Software.
   *
   *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   *  THE SOFTWARE.
   */
  package org.primefaces.extensions.model.monaco;
  
  import java.io.Serializable;
  
  import org.primefaces.shaded.owasp.encoder.Encode;
  
  /**
   * Immutable Model for the Monaco diff code editor that encapsulates two strings, corresponding to the value of the original and modified editor.
   * 
   * @since 11.1.0
   */
  public class MonacoDiffEditorModel implements Serializable {
      private static final long serialVersionUID = 1L;
  
      private final static MonacoDiffEditorModel EMPTY = new MonacoDiffEditorModel();
  
      private final String originalValue;
  
      private final String modifiedValue;
  
      public MonacoDiffEditorModel() {
          this.originalValue = "";
          this.modifiedValue = "";
      }
  
      public MonacoDiffEditorModel(String originalValue, String modifiedValue) {
          this.originalValue = originalValue != null ? originalValue : "";
          this.modifiedValue = modifiedValue != null ? modifiedValue : "";
      }
  
      public MonacoDiffEditorModel withOriginal(String originalValue) {
          return new MonacoDiffEditorModel(originalValue, modifiedValue);
      }
  
      public MonacoDiffEditorModel withModified(String modifiedValue) {
          return new MonacoDiffEditorModel(originalValue, modifiedValue);
      }
  
      /**
       * @return The original text against which perform the comparison.
       */
      public String getOriginalValue() {
          return originalValue;
      }
  
      /**
       * @return The modified text to compare against the original text.
       */
      public String getModifiedValue() {
          return modifiedValue;
      }
  
      @Override
      public int hashCode() {
          final int prime = 31;
          int result = 1;
          result = prime * result + ((modifiedValue == null) ? 0 : modifiedValue.hashCode());
          result = prime * result + ((originalValue == null) ? 0 : originalValue.hashCode());
          return result;
      }
  
      @Override
      public boolean equals(Object obj) {
          if (this == obj) {
              return true;
          }
          if (obj == null) {
              return false;
          }
          if (getClass() != obj.getClass()) {
              return false;
          }
          MonacoDiffEditorModel other = (MonacoDiffEditorModel) obj;
          if (modifiedValue == null) {
              if (other.modifiedValue != null) {
                  return false;
              }
          }
         else if (!modifiedValue.equals(other.modifiedValue)) {
             return false;
         }
         if (originalValue == null) {
             if (other.originalValue != null) {
                 return false;
             }
         }
         else if (!originalValue.equals(other.originalValue)) {
             return false;
         }
         return true;
     }
 
     /**
      * @return Whether this model is empty, e.g. both the original and modified values are empty.
      */
     public boolean isEmpty() {
         return originalValue != null && !originalValue.isEmpty() && modifiedValue != null && !modifiedValue.isEmpty();
     }
 
     @Override
     public String toString() {
         return "[\"" + Encode.forJava(originalValue) + "\",\"" + Encode.forJava(modifiedValue) + "\"]";
     }
 
     /**
      * @return An empty model with no value.
      */
     public static MonacoDiffEditorModel empty() {
         return EMPTY;
     }
 }