/**
 *  Copyright 1996-2013 Founder International Co.,Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * @author yangguangftlp
 */
package org.foxbpm.web.I18N;

import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

import javax.servlet.ServletContext;

import org.springframework.web.context.ServletContextAware;

/**
 * 国际化处理类
 * @author yangguangftlp
 * @date 2014年6月11日
 */
public class PropertiesUtil implements ServletContextAware {
	private static final String FILE = "/resource/zh_cn/pageInfo.properties";

	private static Map<String, Properties> propsMap = new HashMap<String, Properties>();

	private static ServletContext servletContext;

	public static void initProperties() {
		load(FILE);
		servletContext.setAttribute("appInfo", propsMap.get(FILE));
	}

	/**
	 * 从指定文件加载属性配置
	 * 
	 * @param path
	 *            文件
	 * @return 属性配置
	 */
	public static Properties load(String path) {
		Properties prop = null;
		try {
			InputStream is = null;
			is = PropertiesUtil.class.getClassLoader().getResourceAsStream(path);
			prop = new Properties();

			prop.load(is);
			is.close();
			propsMap.put(path, prop);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return prop;
	}

	/**
	 * 获得指定文件中的值
	 * 
	 * @param path
	 *            文件
	 * @param key
	 *            键
	 * @return 值
	 */
	public static String getProperty(String path, String key) {
		Properties prop = propsMap.get(path);
		if (prop == null)
			prop = load(path);
		if (prop == null)
			return null;
		return prop.getProperty(key);
	}

	/**
	 * 设置指定文件中的值
	 * 
	 * @param path
	 *            文件
	 * @param key
	 *            键
	 * @param value
	 *            值
	 */
	public static void setProperty(String path, String key, String value) {
		Properties prop = propsMap.get(path);
		if (prop == null)
			prop = load(path);
		if (prop != null) {
			prop.setProperty(key, value);
			propsMap.put(path, prop);
		}
	}

	public static void setProperty(String key, String value) {
		setProperty(FILE, key, value);
	}

	public static String getProperty(String key) {
		return getProperty(FILE, key);
	}

	public static Properties getProperty() {
		return propsMap.get(FILE);
	}

	public void setServletContext(ServletContext arg0) {
		servletContext = arg0;

	}

}