package com.atlassian.marketplace.client.model;
   
   import com.google.common.base.Function;
   
   import static com.google.common.base.Preconditions.checkNotNull;
   import static org.apache.commons.lang.StringEscapeUtils.escapeHtml;
   
   /**
    * Simple value wrapper for a string that can contain HTML markup.  Marketplace allows only a
   * limited subset of HTML tags and will remove any unsupported tags.  Plain text newlines will
   * be treated as whitespace rather than line breaks (as usual in HTML), so to add a paragraph
   * break you should use {@code <p>}.
   * @since 2.0.0
   */
  public class HtmlString
  {
      private final String value;
      
      private HtmlString(String value)
      {
          this.value = checkNotNull(value);
      }
      
      public static HtmlString html(String value)
      {
          return new HtmlString(value);
      }
      
      public String getHtml()
      {
          return value;
      }
      
      @Override
      public String toString()
      {
          return "Html(" + escapeHtml(value) + ")";
      }
      
      @Override
      public boolean equals(Object other)
      {
          return (other instanceof HtmlString) && ((HtmlString) other).value.equals(value);
      }
      
      @Override
      public int hashCode()
      {
          return value.hashCode();
      }
      
      public static Function<HtmlString, String> htmlToString()
      {
          return new Function<HtmlString, String>()
          {
              @Override
              public String apply(HtmlString input)
              {
                  return input.getHtml();
              }
          };
      }
  
      public static Function<String, HtmlString> stringToHtml()
      {
          return new Function<String, HtmlString>()
          {
              @Override
              public HtmlString apply(String input)
              {
                  return html(input);
              }
          };
      }
  }