<?php

/*********************************************************************************
 * TimeTrex is a Payroll and Time Management program developed by
 * TimeTrex Payroll Services Copyright (C) 2003 - 2011 TimeTrex Payroll Services.
 *
 * 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 Westbank, 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".
 ********************************************************************************/
/*
 * $Revision: 4069 $
 * $Id: Database.inc.php 4069 2010-12-27 19:51:44Z ipso $
 * $Date: 2010-12-27 11:51:44 -0800 (Mon, 27 Dec 2010) $
 */
require_once( Environment::getBasePath() .'classes'. DIRECTORY_SEPARATOR .'adodb'. DIRECTORY_SEPARATOR .'adodb.inc.php');
require_once( Environment::getBasePath() .'classes'. DIRECTORY_SEPARATOR .'adodb'. DIRECTORY_SEPARATOR .'adodb-exceptions.inc.php');

//Use overloading to abstract $db and have calls directly to ADODB
if ( !isset($disable_database_connection) ) {
	try {
		if ( $config_vars['cache']['dir'] != '' ) {
			$ADODB_CACHE_DIR = $config_vars['cache']['dir'] . DIRECTORY_SEPARATOR;
		}

		$ADODB_GETONE_EOF = FALSE; //Make sure GetOne returns FALSE rather then NULL.

		$db = ADONewConnection( $config_vars['database']['type'] );
		$db->SetFetchMode(ADODB_FETCH_ASSOC);
		if ( isset($config_vars['database']['persistent_connections']) AND $config_vars['database']['persistent_connections'] == TRUE ) {
			$db->PConnect( $config_vars['database']['host'], $config_vars['database']['user'], $config_vars['database']['password'], $config_vars['database']['database_name']);
		} else {
			$db->Connect( $config_vars['database']['host'], $config_vars['database']['user'], $config_vars['database']['password'], $config_vars['database']['database_name']);
		}
		/*
		//Use ADODB performance monitor to aid in optimization.
		$db->LogSQL();
		CREATE TABLE adodb_logsql (
		  created timestamp NOT NULL,
		  sql0 varchar(250) NOT NULL,
		  sql1 text NOT NULL,
		  params text NOT NULL,
		  tracer text NOT NULL,
		  timer decimal(16,6) NOT NULL
		)
		*/
		if (Debug::getVerbosity() == 11) {
			$db->debug=TRUE;
		}

		//Make sure when inserting times we always include the timezone.
		//UNLESS we're using MySQL, because MySQL can't store time stamps with time zones.
		if ( strncmp($db->databaseType,'mysql',5) == 0 ) {
			$db->fmtTimeStamp = "'Y-m-d H:i:s'";

			//Put MySQL into ANSI mode
			$db->Execute('SET SESSION sql_mode=\'ansi\'');
			//READ COMMITTED mode is what PGSQL defaults to.
			//This should hopefully fix odd issues like hierarchy trees becoming corrupt.
			$db->Execute('SET TRANSACTION ISOLATION LEVEL READ COMMITTED');
		} else {
			//Use long timezone format because PostgreSQL 8.1 doesn't support some short names, like SGT,IST
			//Using "e" for the timezone fixes the Asia/Calcutta & IST bug where the two were getting confused.
			$db->fmtTimeStamp = "'Y-m-d H:i:s e'";
		}

		//Dont count rows for pagination, much faster. However two queries must be run to tell if we are at the last page or not.
		//$db->pageExecuteCountRows = FALSE;
	} catch (Exception $e) {
		Debug::Text( 'Error connecting to the database!', __FILE__, __LINE__, __METHOD__,1);
		throw new DBError($e);
	}

	//Global options for FastTree class.
	$fast_tree_options = array( 'db' => $db, 'table' => 'hierarchy_tree' );
	$fast_tree_user_group_options = array( 'db' => $db, 'table' => 'user_group_tree' );
	$fast_tree_job_group_options = array( 'db' => $db, 'table' => 'job_group_tree' );
	$fast_tree_job_item_group_options = array( 'db' => $db, 'table' => 'job_item_group_tree' );
	$fast_tree_client_group_options = array( 'db' => $db, 'table' => 'client_group_tree' );
	$fast_tree_product_group_options = array( 'db' => $db, 'table' => 'product_group_tree' );
	$fast_tree_document_group_options = array( 'db' => $db, 'table' => 'document_group_tree' );
}

//Set timezone to system local timezone by default. This is so we sync up all timezones
//in the database (specifically MySQL) and PHP. This fixes timezone bugs
//mainly in maintenance scripts. We used to default this to just GMT, but that can cause additional problems in threaded environments.
//This must be run AFTER the database connection has been made to work properly.
if ( !isset($config_vars['other']['system_timezone']) OR ( isset($config_vars['other']['system_timezone']) AND $config_vars['other']['system_timezone'] == '' ) ) {
	$config_vars['other']['system_timezone'] = date('e');
}
TTDate::setTimeZone( $config_vars['other']['system_timezone'] );
?>
