package com.pccw.mobile.fixipapi.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.pccw.mobile.fixipapi.response.mode.UserInfo;



public class UserConfig {

	private static Logger logger = LoggerFactory.getLogger(UserConfig.class);

	//file operation
	private FileReader fileReader;
	private BufferedReader bufferedReader;
	
	private Map<String, UserInfo> users;
	private static boolean isReady = false;
	
	private static UserConfig instanced = new UserConfig();

	private UserConfig() {
		
		if (!isReady){
			isReady = true;
			String path = SystemConfig.getUser_conf_path();
			initConfiguration(path);
			
		}
	}

	public static UserConfig getInstanced() {
		return instanced;
	}

	public void initConfiguration(String filePath) {
		// first step, read file
		// second step, init configuration
		// third step, close red file
		if (filePath == null) {
			logger.info("file path is null");
			return;
		}

		BufferedReader bf = null;
		Map<String, UserInfo> userMap = new HashMap<String, UserInfo>();
		try {
			bf = readFile(filePath);
			if (bf == null) {
				logger.info("file is empty");
				return;
			}
			String line = null;
			while ((line = bf.readLine()) != null) {
				String[] arr = line.trim().replace(" ", "").split(",");

				if (arr.length == 2) {

					UserInfo userInfo = new UserInfo();
					userInfo.setUsername(arr[0]);
					userInfo.setPassword(arr[1]);

					userMap.put(arr[0].trim(), userInfo);
				}
			}

			if (userMap.size() > 0) {

				users = userMap;
			}

		} catch (FileNotFoundException e) {
			logger.error("action:config;error message:" + e.getMessage());
		} catch (IOException e) {
			logger.error("action:config;error message:" + e.getMessage());
		} finally {
			try {
				closeReadFile();
			} catch (IOException e) {
				logger.error("action:config;error message:" + e.getMessage());
			}
		}

	}

	
	protected BufferedReader readFile(String filePath) throws FileNotFoundException{
		File file = new File(filePath);
		//read file
		fileReader=new FileReader(file);
		bufferedReader = new BufferedReader(fileReader); 
		return bufferedReader;
	}
	
	protected void closeReadFile() throws IOException{
		if (bufferedReader!=null){
			bufferedReader.close();
		}
		if (fileReader!=null){
			fileReader.close();
		}
	}

	
	public Map<String, UserInfo> getUsers() {
		if(users == null){
			return null;
		}
		return users;
	}
	
	public UserInfo getUser(String userName){
		if (userName==null){
			return null;
		}
		if (users!=null){
			return users.get(userName);
		}
		
		return null;
	}
}

user.conf:

##http basic authorization
#user & pwd information

pccw,123
csl,888
SunMobile,000