package com.foxinmy.weixin4j.http.message;
   
   import java.io.IOException;
   import java.io.InputStream;
   
   import com.foxinmy.weixin4j.http.HttpHeaders;
   import com.foxinmy.weixin4j.http.HttpResponse;
   import com.foxinmy.weixin4j.http.MimeType;
   import com.foxinmy.weixin4j.util.FileUtil;
  import com.foxinmy.weixin4j.util.RegexUtil;
  import com.foxinmy.weixin4j.xml.XmlStream;
  
  /**
   * XML 转换
   * 
   * @className XmlMessageConverter
   * @author jinyu
   * @date Jul 20, 2016
   * @since JDK 1.6
   */
  public class XmlMessageConverter extends AbstractMessageConverter {
  
  	public static final XmlMessageConverter GLOBAL = new XmlMessageConverter();
  
  	private static final String XML = "xml";
  	private static final int BRACKET = '<';
  
  	public XmlMessageConverter() {
  		super(MimeType.APPLICATION_XML, MimeType.TEXT_XML, new MimeType("application", "*+xml"));
  	}
  	
  	@Override
  	public boolean canConvert(Class<?> clazz, HttpResponse response) {
  		if (!super.canConvert(clazz, response)) {
  			String disposition = response.getHeaders().getFirst(HttpHeaders.CONTENT_DISPOSITION);
  			String fileName = RegexUtil.regexFileNameFromContentDispositionHeader(disposition);
  			return (fileName != null && FileUtil.getFileExtension(fileName).equalsIgnoreCase(XML));
  		}
  		return true;
  	}
  
  	@Override
  	protected boolean supports(Class<?> clazz, byte[] content) {
  		return BRACKET == content[0];
  	}
  
  	@Override
  	protected <T> T convertInternal(Class<? extends T> clazz, InputStream body) throws IOException {
  		return XmlStream.fromXML(body, clazz);
  	}
  }