Core/src/eu/univento/core/api/Messages.java

package eu.univento.core.api;

import java.sql.ResultSet;
import java.sql.SQLException;

import eu.univento.core.Core;

/**
 * messages from database
 * @author joethei
 * @version 1.0
 */
public class Messages {
	
	public static String PREFIX;
	public static String CONSOLE_PREFIX;
	public static String UNKNOWN_ERROR;
	public static String NOT_A_PLAYER;
	public static String NO_PERMS;
	public static String ERROR;
	public static String NOT_ONLINE;
	public static String KICK_RESTART;
	public static String KICK_FULL;
	public static String COMMAND_NOT_FOUND;
	
	/**
	 * write default data
	 * @throws ClassNotFoundException Class couldn't be found
	 * @throws SQLException SQL server not available or throwing error
	 */
	public static void writeDefault() throws ClassNotFoundException, SQLException {
		//editable messages will be set here, but do not edit this messages.
		MySQL sql = Core.returnSQL();
		sql.openConnection();
		if(!isInDatabase("Prefix")) writeData("INSERT INTO Messages(Ident, Message) values ('Prefix', '<27>aunivento <20>8<EFBFBD>');");
		if(!isInDatabase("ConsolePrefix")) writeData("INSERT INTO Messages(Ident, Message) values ('ConsolePrefix', '[univento Core]');");
		if(!isInDatabase("UnknownError")) writeData("INSERT INTO Messages(Ident, Message) values ('UnknownError', '<27>cEs ist leider ein unbekannter Fehler aufgetreten');");
		if(!isInDatabase("Commands.NoPlayer")) writeData("INSERT INTO Messages(Ident, Message) values ('Commands.NoPlayer', '<27>cDu bist leider kein Spieler');");
		if(!isInDatabase("Commands.NoPerms")) writeData("INSERT INTO Messages(Ident, Message) values ('Commands.NoPerms', '<27>cDu hast keine Berechtigungen diesen Befehl auszuf<75>hren')");
		if(!isInDatabase("Commands.Error")) writeData("INSERT INTO Messages(Ident, Message) values ('Commands.Error', '<27>cBeim ausf<73>hren dieses Befehls ist ein Fehler aufgetreten');");
		if(!isInDatabase("Commands.NotOnline")) writeData("INSERT INTO Messages(Ident, Message) values ('Commands.NotOnline', '<27>cDer Spieler $player ist nicht online');");
		if(!isInDatabase("Commands.Unknown")) writeData("INSERT INTO Messages(Ident, Message) values ('Commands.Unknown', '<27>6Dieser Befehl konnte leider nicht gefunden werden');");
		if(!isInDatabase("Kick.Restart")) writeData("INSERT INTO Messages(Ident, Message) values ('Kick.Restart', '<27>cDer Server startet gerade neu');");
		if(!isInDatabase("Kick.Full")) writeData("INSERT INTO Messages(Ident, Message) values ('Kick.Full', '<27>cDer Server ist leider schon voll')");
		
		sql.closeConnection();
		
	}
	
	private static void writeData(String data) {
		MySQL sql = Core.returnSQL();
		try {
			sql.openConnection();
			sql.getConnection().createStatement().execute(data);
		} catch (ClassNotFoundException | SQLException e) {
			e.printStackTrace();
		}
	}
	
	/**
	 * checks if message is in database
	 * @param ident identifier of message
	 * @return true/false
	 */
	private static boolean isInDatabase(String ident) {
		MySQL sql = Core.returnSQL();
		try {
			sql.openConnection();
		    ResultSet rs = sql.getConnection().createStatement().executeQuery("SELECT * FROM Messages WHERE Ident='" + ident + "';");
		    if (!rs.next()) {
		    	sql.closeConnection();
		    	return false;
		    }
		    sql.closeConnection();
		    return true;
		} catch (ClassNotFoundException | SQLException e) {
			e.printStackTrace();
			return false;
		}
	}
	
	/**
	 * reads all string to variables
	 * @throws ClassNotFoundException Class couldn't be found
	 * @throws SQLException SQL server not available or throwing error
	 */
	public static void readStrings() throws ClassNotFoundException, SQLException {
		PREFIX = readString("Prefix") + " ";
		CONSOLE_PREFIX = readString("ConsolePrefix") + " ";
		UNKNOWN_ERROR = PREFIX + readString("UnknownError");
		NOT_A_PLAYER = readString("Commands.NoPlayer") ;
		NO_PERMS = PREFIX + readString("Commands.NoPerms");
		ERROR = PREFIX + readString("Commands.Error");
		NOT_ONLINE = PREFIX + readString("Commands.NotOnline");
		KICK_RESTART = readString("Kick.Restart");
		KICK_FULL = readString("Kick.Full");
		COMMAND_NOT_FOUND = PREFIX + readString("Commands.Unkown");
	}
	
	/**
	 * reads single message from database
	 * @param path path
	 * @return String
	 */
	public static String readString(String path) {
		MySQL sql = Core.returnSQL();
		try {
			sql.openConnection();
		    ResultSet rs = sql.getConnection().createStatement().executeQuery("SELECT * FROM Messages WHERE Ident='" + path + "';");
		    if (!rs.next()) {
		    	sql.closeConnection();
		    	return null;
		    }
		    String message = rs.getString("Message");
		    sql.closeConnection();
		    return message;
		} catch (ClassNotFoundException | SQLException e) {
			e.printStackTrace();
			return null;
		}
	}
	
}