<?php
/*********************************************************************************
 *
 * TimeTrex is a Workforce Management program developed by
 * TimeTrex Software Inc. Copyright (C) 2003 - 2021 TimeTrex Software Inc.
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License version 3 as published by
 * the Free Software Foundation with the addition of the following permission
 * added to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED
 * WORK IN WHICH THE COPYRIGHT IS OWNED BY TIMETREX, TIMETREX DISCLAIMS THE
 * WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
 *
 * 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 Affero General Public License for more
 * details.
 *
 *
 * You should have received a copy of the GNU Affero General Public License along
 * with this program; if not, see http://www.gnu.org/licenses or write to the Free
 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 *
 *
 * You can contact TimeTrex headquarters at Unit 22 - 2475 Dobbin Rd. Suite
 * #292 West Kelowna, BC V4T 2E9, Canada or at email address info@timetrex.com.
 *
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 *
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License
 * version 3, these Appropriate Legal Notices must retain the display of the
 * "Powered by TimeTrex" logo. If the display of the logo is not reasonably
 * feasible for technical reasons, the Appropriate Legal Notices must display
 * the words "Powered by TimeTrex".
 *
 ********************************************************************************/


/**
 * @package Modules\Install
 */
class InstallSchema extends Install {

	protected $schema_version = null;
	protected $obj = null;

	private $database_type;

	/**
	 * InstallSchema constructor.
	 * @param $database_type
	 * @param $version
	 * @param $db_conn
	 * @param bool $is_upgrade
	 */
	function __construct( $database_type, $version, $db_conn, $is_upgrade = false ) {
		global $config_vars;
		$this->config_vars = $config_vars; //Variable is in the install_obj too, but we need to propegate it here so cleanCacheDirectory() can be called.

		Debug::text( 'Database Type: ' . $database_type . ' Version: ' . $version, __FILE__, __LINE__, __METHOD__, 10 );
		$this->database_type = $database_type;
		$this->schema_version = $version;

		if ( $database_type == '' ) {
			return false;
		}

		if ( $version == '' ) {
			return false;
		}

		$schema_class_file_name = Environment::getBasePath() . DIRECTORY_SEPARATOR . 'classes' . DIRECTORY_SEPARATOR . 'modules' . DIRECTORY_SEPARATOR . 'install' . DIRECTORY_SEPARATOR . 'InstallSchema_' . $version . '.class.php';
		$schema_sql_file_name = $this->getSchemaSQLFilename();
		if ( file_exists( $schema_class_file_name )
				&& file_exists( $schema_sql_file_name ) ) {

			include_once( $schema_class_file_name );

			$class_name = 'InstallSchema_' . $version;

			$this->obj = new $class_name( $this ); //Pass current Install class object to the schema class, so we can call common functions.
			$this->obj->setDatabaseConnection( $db_conn );
			$this->obj->setIsUpgrade( $is_upgrade );
			$this->obj->setVersion( $version );
			$this->obj->setSchemaSQLFilename( $this->getSchemaSQLFilename() );

			return true;
		} else {
			Debug::text( 'Schema Install Class File DOES NOT Exists - File Name: ' . $schema_class_file_name . ' Schema SQL File: ' . $schema_sql_file_name, __FILE__, __LINE__, __METHOD__, 10 );
		}

		return false;
	}

	/**
	 * @return string
	 */
	function getSQLFileDirectory() {
		return Environment::getBasePath() . DIRECTORY_SEPARATOR . 'classes' . DIRECTORY_SEPARATOR . 'modules' . DIRECTORY_SEPARATOR . 'install' . DIRECTORY_SEPARATOR . 'sql' . DIRECTORY_SEPARATOR . $this->database_type . DIRECTORY_SEPARATOR;
	}

	/**
	 * @return string
	 */
	function getSchemaSQLFilename() {
		return $this->getSQLFileDirectory() . $this->schema_version . '.sql';
	}

	//load Schema file data
	function getSchemaSQLFileData() {

	}

	/**
	 * @return bool|null
	 */
	private function getObject() {
		if ( is_object( $this->obj ) ) {
			return $this->obj;
		}

		return false;
	}

	/**
	 * @param $function_name
	 * @param array $args
	 * @return bool|mixed
	 */
	function __call( $function_name, $args = [] ) {
		if ( $this->getObject() !== false ) {
			//Debug::text('Calling Sub-Class Function: '. $function_name, __FILE__, __LINE__, __METHOD__, 10);
			if ( is_callable( [ $this->getObject(), $function_name ] ) ) {
				$return = call_user_func_array( [ $this->getObject(), $function_name ], $args );

				return $return;
			}
		}

		Debug::text( 'Sub-Class Function Call FAILED!:' . $function_name, __FILE__, __LINE__, __METHOD__, 10 );

		return false;
	}

}

?>