<?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' );

jimport('joomla.application.component.model');


class Sql2excelModelSqlexceldatabase extends JModel
{
	var $_dbID;
	var $_dbData;

	/**
	 * Constructor that retrieves the ID from the request
	 */
	function __construct()
	{
		parent::__construct();

		$array = JRequest::getVar('cid',  0, '', 'array');
		$this->setId((int)$array[0]);
	}

	function setId($id)
	{
		// Set id and wipe data
		$this->_dbID		= $id;
		$this->_dbData	= null;
	}

	/**
	 * Method to get data
	 * @return object with data
	 */
	function &getData()
	{

		// Load the data
		if (empty( $this->_dbData )) {
			$query = ' SELECT * FROM #__sql2excel_databases ' .
				 ' WHERE id = '.$this->_dbID;
			$this->_db->setQuery( $query );
			$this->_dbData = $this->_db->loadObject();
		}
		if (!$this->_dbData) {
			$sql2excel = new stdClass();
			$sql2excel->id			= 0;
			$sql2excel->db_name		= null;
			$sql2excel->db_type		= null;
			$sql2excel->db_host		= null;
			$sql2excel->db_username		= null;
			$sql2excel->db_password		= null;
			$sql2excel->db_database		= null; 
			$sql2excel->db_prefix		= null; 
			$this->_dbData			= $sql2excel;
		}
		return $this->_dbData;		
	}

	/**
	 * Method to check if a database is checked out or not
	 *
	 * @access	public
	 * @return	boolean	True if it is checked out
	 */
	function isCheckedOut( $uid=0 ) {
		if ($this->_loadData()) {
			if ($uid) {
				return ($this->_dbData->checked_out && $this->_dbData->checked_out != $uid);
			} else {
				return $this->_dbData->checked_out;
			}
		}
	}

	/**
	 * Method to checkin a database
	 *
	 * @access	public
	 * @return	boolean	True on success
	 */
	function checkin() {
		return true;
	}

	/**
	 * Method to checkout a database
	 *
	 * @access	public
	 * @return	boolean	True on success
	 */
	function checkout($uid = null) {
		return true;
	}
	

	/**
	 * Method to checkout a database
	 *
	 * @access	public
	 * @return	boolean	True on success
	 */
	function fixDatabaseTable() {
	
		$db	= & JFactory::getDBO();		
		$query = 'SHOW COLUMNS FROM #__sql2excel_databases';
		$db->setQuery( $query );
		$cols = $db->loadObjectList();	
		foreach($cols as $col) {
			if ( $col->Field == 'db_prefix' && $col->Type != 'varchar(255)' ) {				
				// Alter the db_prefix column
				$query = "ALTER TABLE #__sql2excel_databases CHANGE db_prefix db_prefix varchar(255) NOT NULL default ''";
				$db->setQuery( $query );
				$db->Query();
			}
		}		
		// Fix the db_prefix field
		return true;
	}	


	/**
	 * Method to get list of supported database types
	 * @return select list (html)
	 */
	function getDatabaseTypes($name, $selected)
	{
		// Supported colors for Excel Writer
		$mydb[] = JHTML::_('select.option', '2', 'MySQL');
		$mydb[] = JHTML::_('select.option', '4', 'MSSQL');		
		$mydb[] = JHTML::_('select.option', '3', 'Oracle');
		$mydb[] = JHTML::_('select.option', '5', 'PostgreSQL');	
		$mydb[] = JHTML::_('select.option', '6', 'Custom');		
		$mydbOpt = JHTML::_( 'select.genericlist', 
					 $mydb, 
					 $name,  
					 'class="inputbox" size="1" onChange="dbtypeChange(this);"' , 
					 'value', 
					 'text',
					 $selected );
		return $mydbOpt;
	}
	
	
	/**
	 * Method to move database up or down
	 *
	 * @access	public
	 * @return	boolean	True on success
	 */
	function move($direction) {
		$row =& $this->getTable();
		if (!$row->load($this->_dbID)) {
			$this->setError($this->_db->getErrorMsg());
			return false;
		}
		if (!$row->move( $direction, ' published >= 0 ' )) {
			$this->setError($this->_db->getErrorMsg());
			return false;
		}
		return true;
	}


 	/**
	 * Method to reorder the database
	 *
	 * @access	public
	 * @return	void
	*/
	function saveorder($cid = array(), $order) {
		$row 	=& $this->getTable();
		$total	= count( $cid );

		// update ordering values
		for( $i=0; $i < $total; $i++ )
		{
			$row->load( (int) $cid[$i] );
			if ($row->ordering != $order[$i]) {
				$row->ordering = $order[$i];
				if (!$row->store()) {
					JError::raiseError(500, $db->getErrorMsg() );
				}
			}
		}
		$row->reorder( );
	}

 	/**
	 * Method to store a record
	 *
	 * @access	public
	 * @return	boolean	True on success
	*/
	function store($data)
	{	
		$row =& $this->getTable();

		// Bind the form fields to the #__sql2excel_databases table
		if (!$row->bind($data)) {
			$this->setError($this->_db->getErrorMsg());
			return false;
		}

		// Make sure the record is valid
		if (!$row->check()) {
			$this->setError($this->_db->getErrorMsg());
			return false;
		}

		// Store the web link table to the database
		if (!$row->store()) {
			$this->setError( $row->getErrorMsg() );
			return false;
		}

		return $row->id;
	}

	/**
	 * Method to update item access
	 *
	 * @access	public
	 * @return	boolean	True on success
	 */
	function accessmenu($id, $access)
	{
		global $mainframe;
		$row =& $this->getTable();
		$row->load($id);
		$row->id = $id;
		$row->access = $access;
		if ( !$row->check() ) {
			$this->setError($this->_db->getErrorMsg());
			return false;
		}
		
		if ( !$row->store() ) {
			$this->setError($this->_db->getErrorMsg());
			return false;
		}
		return true;
	}


	/**
	 * Method to delete record(s)
	 *
	 * @access	public
	 * @return	empty string on success, otherwise error message
	 */	 
	function delete()
	{
		$cids = JRequest::getVar( 'cid', array(0), 'post', 'array' );
		$row =& $this->getTable();

		if (count( $cids )) {

			// Check that we are not trying to delete Joomla! database!
			foreach($cids as $cid) {
				if ( $cid == 1 ) {
			   		return JText::_('DB_JOOMLA_ERR_MSG');
				}
			}
		
			$db	= & JFactory::getDBO();		
			$errMsg = '';
			if (count( $cids )) {
				
				foreach($cids as $cid) {
					// Check that there are no worksheets using this database
					$query = 'SELECT COUNT(*) AS cnt ' .
						' FROM #__sql2excel_worksheets ' .
						' WHERE `database`=' .  $cid;

					$db->setQuery($query);
					$dbCount = $db->loadResult();	
					
					if ( $dbCount > 0 ) {
						$errMsg .= JText::_('DB_DELETE_ERR_MSG') . ' : ' . $cid;
					} else {
						if (!$row->delete( $cid )) {
							$this->setError( $row->getErrorMsg() );
							return false;
						}
					}
				}
			}
			return $errMsg;
		}
	}


	/**
	 * Method to retrieve current database record
	 *
	 * @access	Private
	 * @return	boolean	True on success
	 */
	function _getData() {
		if (empty($this->_dbData)) {		
			$query = 'SELECT p.* '.	
					' FROM #__sql2excel_databases' .
					' WHERE id = ' . (int) $this->_dbID;
			$this->_db->setQuery($query);
			$this->_dbData = $this->_db->loadObject();
			return (boolean) $this->_dbData;
		}
		return true;
	}

}