<?php
/*
 * @component SQL 2 Excel Component
 * @copyright Copyright (C) Joomla-R-Us, joomla-r-us.com
 * @license http://www.gnu.org/licenses/gpl-3.0.html GNU/GPLv3
 */
 
// No direct access
defined( '_JEXEC' ) or die( 'Restricted access' );


class Sql2excelControllerSqlexcelupgrade extends Sql2excelController
{
	/**
	 * constructor (registers additional tasks to methods)
	 * @return void
	 */
	function __construct()
	{
		parent::__construct();

		// Register Extra tasks
		$this->registerTask( 'upgrade'  , 	'upgrade' );
	}


	/**
	 * Public
	 *
	 * Perform Database upgrade
	 * @return void
	 */
	function upgrade()
	{

		$err = '';

		
		// Version 0.9.2
		$res = $this->_addColumn('#__sql2excel_worksheets', 'formulas', "VARCHAR(255) NOT NULL DEFAULT ''");
		if ( ! $res ) {
			$err .= JText::_( 'Failed to add "formulas" column to #__sql2excel_worksheets table.' );
		}
		
		
		// Pro 1.0.1
		if ( $err == '' ) {
			$res = $this->_addColumn('#__sql2excel_worksheets', 'nr_parms', "int(11) unsigned NOT NULL default 0");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "nr_parms" column to #__sql2excel_worksheets table.' );
			}
			$res = $this->_addColumn('#__sql2excel_worksheets', 'parms', "TEXT NOT NULL default ''");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "parms" column to #__sql2excel_worksheets table.' );
			}		
			$res = $this->_addColumn('#__sql2excel_worksheets', 'database', "INT(11) NOT NULL DEFAULT 1");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "database" column to #__sql2excel_worksheets table.' );
			}
			$res = $this->_addColumn('#__sql2excel_worksheets', 'ws_password', "VARCHAR(40) NOT NULL default ''");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "ws_password" column to #__sql2excel_worksheets table.' );
			}
			$res = $this->_addColumn('#__sql2excel_worksheets', 'pane_horiz', "INT(11) NOT NULL DEFAULT -1");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "pane_horiz" column to #__sql2excel_worksheets table.' );
			}
			$res = $this->_addColumn('#__sql2excel_worksheets', 'pane_vert', "INT(11) NOT NULL DEFAULT -1");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "pane_vert" column to #__sql2excel_worksheets table.' );
			}			
		}
		if ( $err == '' ) {
			$res = $this->_addColumn('#__sql2excel_workbooks', 'parms', "TEXT NOT NULL DEFAULT ''");
			if ( ! $res ) {
				$err .= JText::_( 'UPGRADE_WB_PARMS_ERR' );
			} else {
				$res = $this->_addColumn('#__sql2excel_workbooks', 'parms_prompt', "INT(11) NOT NULL DEFAULT 1");
				if ( ! $res ) {
					$err .= JText::_( 'UPGRADE_WB_PARMSPROMPT_ERR' );
				} else {				
					$query = "CREATE TABLE `#__sql2excel_databases` (
						  `id` int(11) NOT NULL auto_increment,
						  `db_name` varchar(255) NOT NULL,
						  `db_type` int(11) unsigned NOT NULL default '0',
						  `db_host` varchar(255) NOT NULL default '',
						  `db_username` varchar(255) NOT NULL default '',
						  `db_password` varchar(255) NOT NULL default '',
						  `db_database` varchar(255) NOT NULL default '',
						  `db_prefix` varchar(40) NOT NULL default '',
						  PRIMARY KEY  (`id`)
						) ENGINE=MyISAM DEFAULT CHARSET=utf8";

					$res = $this->_addTable('#__sql2excel_databases', $query);
					if ( ! $res ) {
						$err .= JText::_( 'UPGRADE_DBTABLE_ERR' );
					} else {
						$db =& JFactory::getDBO();
						$query = "SELECT COUNT(*) AS CNT FROM `#__sql2excel_databases` WHERE ID=1";
						$db->setQuery( $query );
						$joomlaDB = $db->loadResult();
						if ( !joomlaDB ) {
							$query = "INSERT INTO `#__sql2excel_databases` (`id`, `db_name`, `db_type`)
							  	VALUES (1,'Joomla!',1)";
							$db->setQuery( $query );
							if (!$result = $db->query()){
								$err .= JText::_( 'UPGRADE_DBTABLE_JOOMLA_ERR' );
							}	
						}
					}
				}
			}
		}
		
		// Pro 1.1.3
		if ( $err == '' ) {
			$res = $this->_addColumn('#__sql2excel_worksheets', 'extracells', "TEXT NOT NULL DEFAULT ''");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "extracells" column to #__sql2excel_worksheets table.' );
			}
		}
		

		// Pro 1.2.0
		if ( $err == '' ) {
			$res = $this->_addColumn('#__sql2excel_workbooks', 'description', "TEXT NOT NULL DEFAULT ''");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "description" column to #__sql2excel_workbooks table.' );
			}
			$res = $this->_addColumn('#__sql2excel_workbooks', 'keywords', "VARCHAR(255) NOT NULL DEFAULT ''");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "keywords" column to #__sql2excel_workbooks table.' );
			}			
		}


		// Pro 1.2.2
		if ( $err == '' ) {
			$res = $this->_addColumn('#__sql2excel_workbooks', 'cache', "ENUM('Global','Yes','No') NOT NULL default 'Global'");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "cache" column to #__sql2excel_workbooks table.' );
			}
			$res = $this->_addColumn('#__sql2excel_worksheets', 'preview_rows', "int(11) unsigned default NULL");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "preview_rows" column to #__sql2excel_worksheets table.' );
			}
			$res = $this->_addColumn('#__sql2excel_worksheets', 'preview_extracells', "ENUM('Global','Show','Hide') NOT NULL default 'Global'");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "preview_extracells" column to #__sql2excel_worksheets table.' );
			}
			$res = $this->_addColumn('#__sql2excel_worksheets', 'preview_formulas', "ENUM('Global','Show','Label','Hide') NOT NULL default 'Global'");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "preview_formulas" column to #__sql2excel_worksheets table.' );
			}
			$res = $this->_addColumn('#__sql2excel_worksheets', 'preview_hidecols', "VARCHAR(255) NOT NULL default ''");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "preview_hidecols" column to #__sql2excel_worksheets table.' );
			}			
		}

		
		// Pro 1.4.0
		if ( $err == '' ) {
			$query = "CREATE TABLE `#__sql2excel_settings` (
						  `param` VARCHAR(40) NOT NULL,
						  `value` TEXT NOT NULL default '',
						  PRIMARY KEY  (`param`)
						) ENGINE=MyISAM DEFAULT CHARSET=utf8";

			$res = $this->_addTable('#__sql2excel_settings', $query);	
			if ( ! $res ) {
				$err .= JText::_( 'Failed to create "__sql2excel_settings" table.' );
			}
		}
		
		// Pro 1.6.0
		if ( $err == '' ) {		
			$res = $this->_addColumn('#__sql2excel_worksheets', 'header_parms', "VARCHAR(255) NOT NULL DEFAULT 'Arial,10,normal,black,none'");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "header_parms" column to #__sql2excel_worksheets table.' );
			}
			$res = $this->_addColumn('#__sql2excel_worksheets', 'data_parms', "VARCHAR(255) NOT NULL DEFAULT 'Arial,10,normal,black,None,silver,1,27,1'");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "data_parms" column to #__sql2excel_worksheets table.' );
			}
			$res = $this->_addColumn('#__sql2excel_worksheets', 'footer_parms', "VARCHAR(255) NOT NULL DEFAULT 'Arial,10,normal,black,none'");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "footer_parms" column to #__sql2excel_worksheets table.' );
			}
			$res = $this->_addColumn('#__sql2excel_workbooks', 'compress_wb', "ENUM('Global','Yes','No') NOT NULL default 'Global'");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "compress_wb" column to #__sql2excel_workbooks table.' );
			}

			$res = $this->_addColumn('#__sql2excel_schedules', 'compress_attachments', "tinyint(1) unsigned NOT NULL default 0");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "compress_attachments" column to #__sql2excel_schedules table.' );
			}			
		}

		// Pro 1.7.0
		if ( $err == '' ) {		
			$res = $this->_addColumn('#__sql2excel_worksheets', 'print_parms', "VARCHAR(255) NOT NULL default '0.75,0.75,1.0,1.0,0,0,0,0,0'");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "print_parms" column to #__sql2excel_worksheets table.' );
			}
			$res = $this->_addColumn('#__sql2excel_worksheets', 'hide_grid', "tinyint(1) unsigned NOT NULL default 0");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "hide_grid" column to #__sql2excel_worksheets table.' );
			}
		}
		

		// 1.8.0
		if ( $err == '' ) {
			$res = $this->_addColumn('#__sql2excel_schedules', 'sql_db', "tinyint(1) unsigned NOT NULL default 1");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "sql_db" column to #__sql2excel_schedules table.' );
			}		
			$res = $this->_addColumn('#__sql2excel_schedules', 'run_if_type', "tinyint(1) unsigned NOT NULL default 0");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "run_if_type" column to #__sql2excel_schedules table.' );
			}		
			$res = $this->_addColumn('#__sql2excel_schedules', 'run_if_sql', "TEXT NOT NULL default ''");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "run_if_sql" column to #__sql2excel_schedules table.' );
			}
			$res = $this->_addColumn('#__sql2excel_schedules', 'run_if_db', "tinyint(1) unsigned NOT NULL default 1");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "run_if_db" column to #__sql2excel_schedules table.' );
			}			
			$res = $this->_addColumn('#__sql2excel_schedules', 'run_if_op', "VARCHAR(3) NOT NULL DEFAULT ''");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "run_if_op" column to #__sql2excel_schedules table.' );
			}
			$res = $this->_addColumn('#__sql2excel_schedules', 'run_if_val_1', "VARCHAR(80) NOT NULL DEFAULT ''");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "run_if_val_1" column to #__sql2excel_schedules table.' );
			}
			$res = $this->_addColumn('#__sql2excel_schedules', 'run_if_val_2', "VARCHAR(80) NOT NULL DEFAULT ''");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "run_if_val_2" column to #__sql2excel_schedules table.' );
			}
			$res = $this->_addColumn('#__sql2excel_schedules', 'on_success_sql', "TEXT NOT NULL default ''");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "on_success_sql" column to #__sql2excel_schedules table.' );
			}
			$res = $this->_addColumn('#__sql2excel_schedules', 'on_success_db', "tinyint(1) unsigned NOT NULL default 1");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "on_success_db" column to #__sql2excel_schedules table.' );
			}
			$res = $this->_addColumn('#__sql2excel_schedules', 'on_success_email', "VARCHAR(255) NOT NULL DEFAULT ''");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "on_success_email" column to #__sql2excel_schedules table.' );
			}
			$res = $this->_addColumn('#__sql2excel_schedules', 'on_failure_sql', "TEXT NOT NULL default ''");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "on_failure_sql" column to #__sql2excel_schedules table.' );
			}
			$res = $this->_addColumn('#__sql2excel_schedules', 'on_failure_db', "tinyint(1) unsigned NOT NULL default 1");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "on_failure_db" column to #__sql2excel_schedules table.' );
			}
			$res = $this->_addColumn('#__sql2excel_schedules', 'on_failure_email', "VARCHAR(255) NOT NULL DEFAULT ''");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "on_failure_email" column to #__sql2excel_schedules table.' );
			}
		}
		

		// 1.9.0
		if ( $err == '' ) {
			$res = $this->_addColumn('#__sql2excel_workbooks', 'dlformat', "tinyint(1) unsigned NOT NULL default 0");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "dlformat" column to #__sql2excel_workbooks table.' );
			}			
		}


		// 2.1.0
		if ( $err == '' ) {
			$res = $this->_addColumn('#__sql2excel_worksheets', 'cellformat', "TEXT NOT NULL DEFAULT ''");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "cellformat" column to #__sql2excel_worksheets table.' );
			}			
		}

		// 2.2.0
		if ( $err == '' ) {
			$res = $this->_addColumn('#__sql2excel_worksheets', 'zoom', "int(11) unsigned NOT NULL default 100");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "zoom" column to #__sql2excel_worksheets table.' );
			}			
		}		

		// 2.3.0
		if ( $err == '' ) {
			$res = $this->_addColumn('#__sql2excel_workbooks', 'parms_length', "int(11) unsigned NOT NULL default 5");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "parms_length" column to #__sql2excel_workbooks table.' );
			}			
		}

		// 2.4.0
		if ( $err == '' ) {
			$res = $this->_addColumn('#__sql2excel_worksheets', 'show_colheader', "tinyint(1) unsigned NOT NULL default 1");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "show_colheader" column to #__sql2excel_worksheets table.' );
			}
			$res = $this->_addColumn('#__sql2excel_worksheets', 'escape_chars_html', "tinyint(1) unsigned NOT NULL default 1");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "escape_chars_html" column to #__sql2excel_worksheets table.' );
			}						
			$res = $this->_addColumn('#__sql2excel_workbooks', 'lightbox_x', "int(11) default NULL");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "lightbox_x" column to #__sql2excel_workbooks table.' );
			}
			$res = $this->_addColumn('#__sql2excel_workbooks', 'lightbox_y', "int(11) default NULL");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "lightbox_y" column to #__sql2excel_workbooks table.' );
			}					
		}
		
		// 2.4.0
		if ( $err == '' ) {
			$res = $this->_addColumn('#__sql2excel_workbooks', 'preview_dl_btn', "ENUM('Global','Show','Hide') NOT NULL default 'Global'");
			if ( ! $res ) {
				$err .= JText::_( 'Failed to add "preview_dl_btn" column to #__sql2excel_workbooks table.' );
			}			
		}		
		
		
		if ( $err != '' ) {
			$msg = '<p>' . JText::_( 'Error' ) . '!</p>' . $err;
		} else {
			$msg = JText::_( 'Upgrade Successful!' );
		}
		$this->setRedirect( 'index.php?option=com_sql2excel', $msg );
		
	}


	/**
	 * Private function
	 *
	 * Adds a column to a table, if not exists
	 * @return boolean
	 */
	function _addColumn($table, $colName, $colAttr = "INT( 11 ) NOT NULL DEFAULT '0'" ) {
		
		global $mainframe;
		$db =& JFactory::getDBO();
		$colExists = false;

		$query = 'SHOW COLUMNS FROM ' . $table;
		$db->setQuery( $query );
		if (!$result = $db->query()){return false;}
		$columnData = $db->loadObjectList();
		
		
		foreach ($columnData as $currCol) {
			if ($currCol->Field == $colName) {
				$colExists = true;
				break;
			}
		}
		
		if (!$colExists) {
			$query = "ALTER TABLE `".$table."` ADD `" . $colName . "` " . $colAttr;
			$db->setQuery( $query );
			if (!$result = $db->query()){
				return false;
			}
		}
		return true;
	}
	

	/**
	 * Private function
	 *
	 * Adds a table, if not exists
	 * @return boolean
	 */
	function _addTable($tableName, $sql) {
		$db =& JFactory::getDBO();
		if ( ! $this->_tableExists($tableName) ) {
			$db->setQuery( $sql );
			if (!$result = $db->query()){
				return false;
			}
		}
		return true;
	}

	
	/**
	 * Private function
	 *
	 * Checks if a table exists
	 * @return boolean
	 */	
	function _tableExists($tableName) {
		$db	= & JFactory::getDBO();	
		$prefix = $db->getPrefix(); 
		$tableName = str_replace('#__', $prefix, $tableName);
		$tableList = $db->getTableList($db);		
		if ( in_array($tableName,$tableList) ) {
			return true;
		} else {
			return false;
		}
	}

}