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package titancoreapi.API.MySQL;

import titancoreapi.Core.LogLevel;
import titancoreapi.TitanCoreAPI;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;

public class SQLManager extends SQLOperations implements Runnable {

	private TitanCoreAPI main = TitanCoreAPI.getInstance();

	private Connection connection;

	private String host = "jdbc:sqlserver://localhost";
	private String database;
	private String username = "user";
	private String password = "pass";

	public void refreshConnection() {
		try {
			if ((this.connection == null) || (this.connection.isClosed())) {
				initialize(this.database);
			}
		}
		catch (SQLException e) {
			e.printStackTrace();
		}
	}

	public void closeConnection() {
		try {
			this.connection.close();
		}
		catch (SQLException e) {
			e.printStackTrace();
		}
	}

	public boolean initialize(String database) {
		try {
			this.database = database;
			Class.forName("com.mysql.jdbc.Driver");
			this.connection = DriverManager.getConnection(this.host + this.database + "?autoReconnect=true&failOverReadOnly=false&maxReconnects=10", this.username, this.password);
			return true;
		}
		catch (ClassNotFoundException e) {
			e.printStackTrace();
			return false;
		}
		catch (SQLException e) {
			e.printStackTrace();
			return false;
		}

	}

	/**
	 * Any query which does not return a ResultSet object. Such as : INSERT,
	 * UPDATE, CREATE TABLE...
	 *
	 * @param query
	 */
	public void standardQuery(String query) throws SQLException {
		this.refreshConnection();
		super.standardQuery(query, this.connection);
	}

	/**
	 * Check whether a field/entry exists in a database.
	 *
	 * @param query
	 * @return Whether or not a result has been found in the query.
	 * @throws java.sql.SQLException
	 */
	public boolean existanceQuery(String query) throws SQLException {
		this.refreshConnection();
		return super.sqlQuery(query, this.connection).next();
	}

	/**
	 * Any query which returns a ResultSet object. Such as : SELECT Remember to
	 * close the ResultSet object after you are done with it to free up
	 * resources immediately. ----- ResultSet set = sqlQuery(
	 * "SELECT * FROM sometable;"); set.doSomething(); set.close(); -----
	 *
	 * @param query
	 * @return ResultSet
	 */
	public ResultSet sqlQuery(String query) throws SQLException {
		this.refreshConnection();
		return super.sqlQuery(query, this.connection);
	}

	/**
	 * Check whether the table name exists.
	 *
	 * @param table
	 * @return
	 */
	public boolean doesTableExist(String table) throws SQLException {
		this.refreshConnection();
		return super.checkTable(table, this.connection);
	}

	@Override
	public void run() {
		main.getServer().getScheduler().runTaskAsynchronously(main, new Runnable() {

			@Override
			public void run() {
				try {
					existanceQuery("SELECT * FROM OPS LIMIT 1, 0;");
				}
				catch (SQLException e) {
					main.getUtilLogger().logLevel(LogLevel.WARNING, "SQLManager> Failed to keep connection!");
					e.printStackTrace();
				}
			}
		});
	}

}