package foundation.server.config;

import java.util.HashMap;
import java.util.Map;
import java.util.Set;

import javax.servlet.ServletContext;

import foundation.translator.Translator;
import foundation.util.Util;
import foundation.variant.provider.DataEvent;
import foundation.variant.provider.IVariantsProvider;
import foundation.variant.provider.VariantProviderType;


public class Configer implements IVariantsProvider {

	private static Configer instance;
	private static Object lock = new Object();
	
	private static String Path_Application;
	private static String Path_WebInfo;
	private static String Path_Config;
	private static String Path_SQL;
	
	private Map<String, String> params;


	private Configer() {
		params = new HashMap<String, String>();
	}
	
	public static Configer getInstance() {
		if (instance == null) {
			synchronized (lock) {
				if (instance == null) {
					instance = new Configer();
				}
			}
		}
		
		return instance;
	}
	
	public static void init(ServletContext servletContext) {
		getInstance();
		
		instance.params = new HashMap<String, String>();

		Path_Application = servletContext.getRealPath("").replace("\\", "/");
		Path_WebInfo = servletContext.getRealPath("/WEB-INF").replace("\\", "/");
		Path_Config = Path_WebInfo + "/config/";
		Path_SQL = Path_WebInfo + "/sql/";
	}
	
	public static Configer newInstance() {
		return new Configer();
	}

	public static void activeInstance(Configer configer) {
		instance = configer;
	}
	
	public static void clear() {
		instance.params.clear();
	}
	
	public void addParam(String name, String value) throws Exception {
		params.put(name.toLowerCase(), value);
	}
	
	public static String getParam(String name) {
		if (name == null) {
			return null;
		}

		return instance.params.get(name.toLowerCase());
	}
	
	public static String getString(String name) {
		if (name == null) {
			return null;
		}

		name = name.toLowerCase();
		return instance.params.get(name);
	}
	
	public static String getString(String name, String defaultValue) {
		String value = getString(name);
		
		if (Util.isEmpty(value)) {
			return defaultValue;
		}
		
		return value;
	}
	
	public static int getInt(String name) throws Exception {
		String value = getString(name);
		
		if (Util.isEmpty(value)) {
			return 0;
		}
		
		return Translator.toInteger(value);
	}
	
	public static int getInt(String name, int defaultValue) {
		int result = defaultValue;
		try {
			result = getInt(name);
		}
		catch (Exception e) {
			result = defaultValue;
		}
		
		return result;
	}

	public static boolean getBoolean(String name, boolean defaultValue) {
		String value = getString(name);
		return Translator.toBoolean(value, defaultValue);
	}

	public static String getPath_WebInfo() {
		return Path_WebInfo;
	}

	public static String getPath_Config() {
		return Path_Config;
	}

	public static String getPath_TimerConfig() {
		return Path_Config + "timer.properties";
	}

	public static String getPath_Application() {
		return Path_Application;
	}
	
	public static String getPath_Application(String subpath) {
		if (subpath == null) {
			return Path_Application;
		}
		
		subpath = subpath.replace("\\", "/");
		
		if ('/' != subpath.charAt(0)) {
			subpath = "/" + subpath;
		}
		
		if ('/' != subpath.charAt(subpath.length() - 1)) {
			subpath = subpath + "/";
		}
		
		return Path_Application + subpath;
	}

	public static String getPath_LoggerConfig() {
		return Path_Config + "log4j.xml";
	}

	public static String getPath_ActivePeriodConfig() {
		return Path_Config + "activeperiod.properties";
	}

	public static String getPath_SQLConfig() {
		return Path_SQL;
	}

	public static String getPath_SQLDTD() {
		return Path_Config + "sql.dtd";
	}
	
	public static String getPath_ServerConfig() {
		return Path_Config + "server.xml";
	}

	public static String getPath_MainConfig() {
		return Path_Config + "config.xml";
	}

	public static String getPath_WXConfig() {
		return Path_Config + "weixin.properties";
	}
	
	//he mail.xml 20230829
	public static String getPath_MailConfig() {
		return Path_Config + "mail.xml";
	}
	
	//he message.xml 20230807
	public static String getPath_SmsConfig() {
		return Path_Config + "message.xml";
	}	

	public static String getPath(String name, String defaultValue) {
		String path = getString(name);
		
		if (path == null) {
			path = defaultValue;
		}
		
		return path;
	}

	@Override
	public VariantProviderType getProviderType() {
		return VariantProviderType.Persist;
	}

	@Override
	public String getProviderName() {
		return "configer";
	}

	@Override
	public boolean containsVariant(String variantName) {
		if (variantName == null) {
			return false;
		}
		
		variantName = variantName.toLowerCase();
		return params.containsKey(variantName);
	}

	@Override
	public Object getVariantValue(DataEvent dataEvent, String variantName) {
		if (variantName == null) {
			return null;
		}
		
		if ("path_application".equalsIgnoreCase(variantName)) {
			return Path_Application;
		}
		else if ("path_config".equalsIgnoreCase(variantName)) {
			return Path_Config;
		}
		else if ("path_sql".equalsIgnoreCase(variantName)) {
			return Path_SQL;
		}
		else if ("path_webinfo".equalsIgnoreCase(variantName)) {
			return Path_WebInfo;
		}
		else {
			return params.get(variantName.toLowerCase());
		}
	}

	@Override
	public Set<String> getVariantNames() {
		return params.keySet();
	}

}