package com.ksfzhaohui.config;

import java.net.URL;
import java.util.HashMap;
import java.util.Map;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import com.ksfzhaohui.SouTuException;
import com.ksfzhaohui.download.Download;

/**
 * 协议网址配置文件加载
 * 
 * @author ksfzhaohui
 * 
 */
public class WebConfig {

	private static Log logger = LogFactory.getLog(WebConfig.class);
	/** 网址参数配置文件 */
	private static final String webSitePath = "/webSite.xml";

	private Map<String, WebSite> webSiteMap = new HashMap<String, WebSite>();

	private static WebConfig webConfig = new WebConfig();

	private WebConfig() {
		readXML(webSitePath);
	}

	public static WebConfig getWebConfig() {
		return webConfig;
	}

	/**
	 * 读取XMl
	 * 
	 * @param fileName
	 *            文件名
	 * @throws GameException
	 */
	private void readXML(String fileName) {
		try {
			URL url = getClass().getResource(webSitePath);
			if (url == null) {
				throw new SouTuException("类路径下无法找到" + webSitePath + "配置文件");
			}
			parse(url);
		} catch (Exception e) {
			logger.error(e.getMessage(), e);
		}
	}

	private void parse(URL url) throws SouTuException {
		StringBuffer sb = new StringBuffer("读取网站参数配置文件--->网站分别是:");
		try {
			DocumentBuilderFactory factory = DocumentBuilderFactory
					.newInstance();
			DocumentBuilder builder = factory.newDocumentBuilder();
			Document doc = builder.parse(url.toExternalForm());

			NodeList typeNodes = doc.getElementsByTagName("webSite");
			if (typeNodes == null || typeNodes.getLength() == 0) {
				throw new SouTuException("不存在webSite标签");
			}

			for (int i = 0; i < typeNodes.getLength(); i++) {
				Node typeNode = typeNodes.item(i);
				NamedNodeMap webSiteAttr = typeNode.getAttributes();
				NodeList elements = typeNode.getChildNodes();
				WebSite webSite = new WebSite();
				for (int j = 0; j < elements.getLength(); j++) {
					Node element = elements.item(j);
					if (element instanceof Element) {
						Chapter chapter = new Chapter();
						NamedNodeMap chapterAttr = element.getAttributes();
						for (int k = 0; k < chapterAttr.getLength(); k++) {
							Node attribute = chapterAttr.item(k);
							String attName = attribute.getNodeName();
							if (attName.equalsIgnoreCase("name")) {
								chapter.setName(attribute.getNodeValue());
							} else if (attName.equalsIgnoreCase("tag")) {
								chapter.setTag(attribute.getNodeValue());
							} else if (attName.equalsIgnoreCase("page")) {
								chapter.setPage(Integer.valueOf(attribute
										.getNodeValue()));
							} else if (attName.equalsIgnoreCase("downloadPage")) {
								chapter.setDownloadPage(Integer.valueOf(attribute
										.getNodeValue()));
							} else {
								throw new SouTuException("不存在" + attName
										+ "此属性");
							}
						}
						webSite.addChapter(chapter);
					}
				}

				for (int k = 0; k < webSiteAttr.getLength(); k++) {
					Node attribute = webSiteAttr.item(k);
					String attName = attribute.getNodeName();
					if (attName.equalsIgnoreCase("name")) {
						webSite.setName(attribute.getNodeValue());
						webSiteMap.put(attribute.getNodeValue(), webSite);
						sb.append("[").append(attribute.getNodeValue())
								.append("]");
					} else if (attName.equalsIgnoreCase("class")) {
						webSite.setDownload((Download) Class.forName(
								attribute.getNodeValue()).newInstance());
					} else {
						throw new SouTuException("不存在" + attName + "此属性");
					}
				}
			}

			logger.info(sb.toString());
		} catch (Exception e) {
			throw new SouTuException(e.getMessage(), e);
		}
	}

	public Map<String, WebSite> getWebSiteMap() {
		return webSiteMap;
	}
}