/*
 * Copyright © 2004-2021 L2J Server
 * 
 * This file is part of L2J Server.
 * 
 * L2J Server 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.
 * 
 * L2J Server 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.gameserver.model.variables;

import java.util.Map.Entry;
import java.util.logging.Level;
import java.util.logging.Logger;

import com.l2jserver.commons.database.ConnectionFactory;

/**
 * @author UnAfraid
 */
public class AccountVariables extends AbstractVariables {
	
	private static final Logger _log = Logger.getLogger(AccountVariables.class.getName());
	
	// SQL Queries.
	private static final String SELECT_QUERY = "SELECT * FROM account_gsdata WHERE account_name = ?";
	
	private static final String DELETE_QUERY = "DELETE FROM account_gsdata WHERE account_name = ?";
	
	private static final String INSERT_QUERY = "INSERT INTO account_gsdata (account_name, var, value) VALUES (?, ?, ?)";
	
	private final String _accountName;
	
	public AccountVariables(String accountName) {
		_accountName = accountName;
		restoreMe();
	}
	
	@Override
	public boolean restoreMe() {
		// Restore previous variables.
		try (var con = ConnectionFactory.getInstance().getConnection();
			var st = con.prepareStatement(SELECT_QUERY)) {
			st.setString(1, _accountName);
			try (var rs = st.executeQuery()) {
				while (rs.next()) {
					set(rs.getString("var"), rs.getString("value"));
				}
			}
		} catch (Exception e) {
			_log.log(Level.WARNING, getClass().getSimpleName() + ": Couldn't restore variables for: " + _accountName, e);
			return false;
		} finally {
			compareAndSetChanges(true, false);
		}
		return true;
	}
	
	@Override
	public boolean storeMe() {
		// No changes, nothing to store.
		if (!hasChanges()) {
			return false;
		}
		
		try (var con = ConnectionFactory.getInstance().getConnection()) {
			// Clear previous entries.
			try (var st = con.prepareStatement(DELETE_QUERY)) {
				st.setString(1, _accountName);
				st.execute();
			}
			
			// Insert all variables.
			try (var st = con.prepareStatement(INSERT_QUERY)) {
				st.setString(1, _accountName);
				for (Entry<String, Object> entry : getSet().entrySet()) {
					st.setString(2, entry.getKey());
					st.setString(3, String.valueOf(entry.getValue()));
					st.addBatch();
				}
				st.executeBatch();
			}
		} catch (Exception e) {
			_log.log(Level.WARNING, getClass().getSimpleName() + ": Couldn't update variables for: " + _accountName, e);
			return false;
		} finally {
			compareAndSetChanges(true, false);
		}
		return true;
	}
}
