/*
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package com.l2jserver.dbinstaller.util.mysql;

import java.io.File;
import java.io.FileFilter;
import java.io.FileNotFoundException;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

import javax.swing.JOptionPane;

import com.l2jserver.dbinstaller.DBOutputInterface;

/**
 * 
 * @author mrTJO
 */
public class ScriptExecutor
{
	DBOutputInterface _frame;
	public ScriptExecutor(DBOutputInterface frame)
	{
		_frame = frame;
	}
	
	public void execSqlBatch(File dir)
	{
		execSqlBatch(dir, false);
	}
	
	public void execSqlBatch(File dir, boolean skipErrors)
	{
		File[] file = dir.listFiles(new SqlFileFilter());
		_frame.setProgressIndeterminate(false);
		_frame.setProgressMaximum(file.length-1);
		for (int i = 0; i < file.length; i++)
		{
			_frame.setProgressValue(i);
			execSqlFile(file[i], skipErrors);
		}
	}
	
	public void execSqlFile(File file)
	{
		execSqlFile(file, false);
	}
	
	public void execSqlFile(File file, boolean skipErrors)
	{
		try
		{
			_frame.appendToProgressArea("Installing "+file.getName());
			String line = "";
			Connection con = _frame.getConnection();
			Statement stmt = con.createStatement();
			Scanner scn = new Scanner(file);
			StringBuilder sb = new StringBuilder();
			while (scn.hasNextLine())
			{
				line = scn.nextLine();
				if (line.startsWith("--"))
					continue;
				else if (line.contains("--"))
					line = line.split("--")[0];
				
				line = line.trim();
				if (!line.isEmpty())
					sb.append(line+"\n");
				
				if (line.endsWith(";"))
				{
					stmt.execute(sb.toString());
					sb = new StringBuilder();
				}
			}
			scn.close();
		}
		catch (FileNotFoundException e)
		{
			JOptionPane.showMessageDialog(null, "File Not Found!: "+e.getMessage(), "Installer Error", JOptionPane.ERROR_MESSAGE);
		}
		catch (SQLException e)
		{
			if (!skipErrors)
			{
				Object[] options = { "Continue", "Abort" };
				int n = JOptionPane.showOptionDialog(null, "MySQL Error: "+e.getMessage(),
					"Script Error", JOptionPane.YES_NO_OPTION, JOptionPane.WARNING_MESSAGE,
					null, options, options[0]);
			
				if (n == 1)
					System.exit(0);
			}
		}
	}
	
	
	public static class SqlFileFilter implements FileFilter
	{
		@Override
		public boolean accept(File pathname)
		{
			if (pathname.getName().endsWith(".sql"))
				return true;
			return false;
		}
	}

}