package com.chinacreator.videoalliance.net.util;

import javax.servlet.http.HttpServletRequest;
import org.apache.commons.lang.math.NumberUtils;
import org.apache.log4j.Logger;

public class WebUtil {
	
	private static final String PORT = ":port=";
	private static final String SCHEME = ":scheme=";

	private static Logger logger = Logger.getLogger("WebUtil.class");
	
	public static String getBasePath(HttpServletRequest request) {
		String path = request.getContextPath();
		String useragent = request.getHeader("user-agent");
				
		
		int port = -1;
		String scheme = null;
		if(useragent != null) {
			int index = useragent.indexOf(PORT);
			if(index != -1) {
				port = NumberUtils.toInt(useragent.substring(index + PORT.length()), -1);
			}
			int index1 = useragent.indexOf(SCHEME);
			if(index1 != -1) {
				scheme = useragent.substring(index1 + SCHEME.length(),index);
			}
		}
		
		if (port == -1) {
			port = request.getServerPort();
		}
		if(scheme == null){
			scheme = request.getScheme();
		}
		System.out.println(request.getHeader("User-Agent"));
		if(request.getServerName().equals("ua1.v.wo.cn")){
			port = 443;
		}
		

		String proxy_port = request.getHeader("X-Proxy-Port");
		String proxy_host = request.getHeader("X-Proxy-Host");
		String proxy_scheme = request.getHeader("X-Proxy-Scheme");
		
		logger.info("X-Proxy-Port ===> " + proxy_port + ", X-Proxy-Host ==> " + proxy_host + ", X-Proxy-Scheme ==>" + proxy_scheme);
		
		if(proxy_port != null){
			port = NumberUtils.toInt(proxy_port, -1);
		}
		if(proxy_scheme != null){
			scheme = proxy_scheme;
		} 
		
		if(port == 80) {
			return scheme+"://" + request.getServerName() + path;
		}
		return scheme+"://" + request.getServerName() + ":" + port + path;
	}
	
	public static void main(String[] args) {
		String str = "Mozilla/5.0 (iPhone; CPU iPhone OS 10_0_2 like Mac OS X) AppleWebKit/602.1.50 (KHTML, like Gecko) Version/10.0 Mobile/14A456 Safari/602.1:scheme=https://ua1.v.wo.cn:443:port=86";
		int index1 = str.indexOf(SCHEME);
		int index = str.indexOf(PORT);
		String scheme = str.substring(index1 + SCHEME.length(),index);
		System.out.println(scheme);
	}
}