package com.redfin.sitemapgenerator;

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;

/**
 
* Builds a sitemap for Google News.
  
To configure options, use {@link #builder(URL, File)}
 
* @author Dan Fabulich
 
* @see<a href="http://www.google.com/support/news_pub/bin/answer.py?answer=74288">Creating a News Sitemap</a>
 
*/

public class GoogleNewsSitemapGenerator extends SitemapGenerator<GoogleNewsSitemapUrl,GoogleNewsSitemapGenerator> {

	
/** 1000 URLs max in a Google News sitemap. */
	
public static final int MAX_URLS_PER_SITEMAP = 1000;
	

	
/** Configures a builder so you can specify sitemap generator options
	 
*
 

	 
* @param baseUrl All URLs in the generated sitemap(s) should appear under this base URL
	 
* @param baseDir Sitemap files will be generated in this directory as either "sitemap.xml" or "sitemap1.xml" "sitemap2.xml" and so on.
	 
* @return a builder; call .build() on it to make a sitemap generator
	 
*/

	
public static SitemapGeneratorBuilder<GoogleNewsSitemapGenerator> builder(URL baseUrl, File baseDir) {
		
SitemapGeneratorBuilder<GoogleNewsSitemapGenerator> builder =
			
new SitemapGeneratorBuilder<GoogleNewsSitemapGenerator>(baseUrl, baseDir, GoogleNewsSitemapGenerator.class);
		
builder.maxUrls = 1000;
		
return builder;
	
}
	

	
/** Configures a builder so you can specify sitemap generator options
	 
*
 

	 
* @param baseUrl All URLs in the generated sitemap(s) should appear under this base URL
	 
* @param baseDir Sitemap files will be generated in this directory as either "sitemap.xml" or "sitemap1.xml" "sitemap2.xml" and so on.
	 
* @return a builder; call .build() on it to make a sitemap generator
	 
*/

	
public static SitemapGeneratorBuilder<GoogleNewsSitemapGenerator> builder(String baseUrl, File baseDir) throws MalformedURLException {
		
SitemapGeneratorBuilder<GoogleNewsSitemapGenerator> builder =
			
new SitemapGeneratorBuilder<GoogleNewsSitemapGenerator>(baseUrl, baseDir, GoogleNewsSitemapGenerator.class);
		
builder.maxUrls = GoogleNewsSitemapGenerator.MAX_URLS_PER_SITEMAP;
		
return builder;
	
}
	

	
GoogleNewsSitemapGenerator(AbstractSitemapGeneratorOptions<?> options) {
		
super(options, new Renderer());
		
if (options.maxUrls > GoogleNewsSitemapGenerator.MAX_URLS_PER_SITEMAP) {
			
throw new RuntimeException("Google News sitemaps can have only 1000 URLs per sitemap: " + options.maxUrls);
		
}
	
}

	
/** Configures the generator with a base URL and directory to write the sitemap files.
	 
*
 

	 
* @param baseUrl All URLs in the generated sitemap(s) should appear under this base URL
	 
* @param baseDir Sitemap files will be generated in this directory as either "sitemap.xml" or "sitemap1.xml" "sitemap2.xml" and so on.
	 
* @throws MalformedURLException
	 
*/

	
public GoogleNewsSitemapGenerator(String baseUrl, File baseDir)
			
throws MalformedURLException {
		
this(new SitemapGeneratorOptions(baseUrl, baseDir));
	
}

	
/** Configures the generator with a base URL and directory to write the sitemap files.
	 
*
 

	 
* @param baseUrl All URLs in the generated sitemap(s) should appear under this base URL
	 
* @param baseDir Sitemap files will be generated in this directory as either "sitemap.xml" or "sitemap1.xml" "sitemap2.xml" and so on.
	 
*/

	
public GoogleNewsSitemapGenerator(URL baseUrl, File baseDir) {
		
this(new SitemapGeneratorOptions(baseUrl, baseDir));
	
}

	
/**Configures the generator with a base URL and a null directory. The object constructed
	 
* is not intended to be used to write to files. Rather, it is intended to be used to obtain
	 
* XML-formatted strings that represent sitemaps.
	 
*
 

	 
* @param baseUrl All URLs in the generated sitemap(s) should appear under this base URL
	 
*/

	
public GoogleNewsSitemapGenerator(String baseUrl) throws MalformedURLException {
		
this(new SitemapGeneratorOptions(new URL(baseUrl)));
	
}
	

	
/**Configures the generator with a base URL and a null directory. The object constructed
	 
* is not intended to be used to write to files. Rather, it is intended to be used to obtain
	 
* XML-formatted strings that represent sitemaps.
	 
*
 

	 
* @param baseUrl All URLs in the generated sitemap(s) should appear under this base URL
	 
*/

	
public GoogleNewsSitemapGenerator(URL baseUrl) {
		
this(new SitemapGeneratorOptions(baseUrl));
	
}
	

	
private static class Renderer extends AbstractSitemapUrlRenderer<GoogleNewsSitemapUrl> implements ISitemapUrlRenderer<GoogleNewsSitemapUrl> {

		
public Class<GoogleNewsSitemapUrl> getUrlClass() {
			
return GoogleNewsSitemapUrl.class;
		
}

		
public String getXmlNamespaces() {
			
return "xmlns:news=\"http://www.google.com/schemas/sitemap-news/0.9\"";
		
}

		
public void render(GoogleNewsSitemapUrl url, StringBuilder sb, W3CDateFormat dateFormat) {
			
StringBuilder tagSb = new StringBuilder();
			
tagSb.append(" <news:news>\n");
			
tagSb.append(" <news:publication>\n");
			
renderSubTag(tagSb, "news", "name", url.getPublication().getName());
			
renderSubTag(tagSb, "news", "language", url.getPublication().getLanguage());
			
tagSb.append(" </news:publication>\n");
			
renderTag(tagSb, "news", "genres", url.getGenres());
			
renderTag(tagSb, "news", "publication_date", dateFormat.format(url.getPublicationDate()));
			
renderTag(tagSb, "news", "title", url.getTitle());
			
renderTag(tagSb, "news", "keywords", url.getKeywords());
			
tagSb.append(" </news:news>\n");
			
super.render(url, sb, dateFormat, tagSb.toString());
		
}
		

	
}

}