<?php

class CurrenciesEventHandler extends InpDBEventHandler {

	/**
	 * Allows to override standart permission mapping
	 *
	 */
	function mapPermissions()
	{
		parent::mapPermissions();
		$permissions = Array(
								// admin
								'OnUpdateRate'		=>	Array('self' => 'add|edit'),
								'OnUpdateRates'		=>	Array('self' => 'advanced:update_rate|add|edit'),
								'OnDisableUnused'	=>	Array('self' => 'edit'),

								// front
								'OnChangeCurrency'	=>	Array('self' => true),
						);
		$this->permMapping = array_merge($this->permMapping, $permissions);
	}

	/**
	 * Enter description here...
	 *
	 * @param kEvent $event
	 */
	function OnSetPrimary(&$event)
	{
		if ($this->Application->CheckPermission('SYSTEM_ACCESS.READONLY', 1)) {
			return;
		}

		$object =& $event->getObject();
		$object->SetDBField('IsPrimary', 1);
		$object->Update();
	}

	/**
	 * Enter description here...
	 *
	 * @param kEvent $event
	 */
	function OnBeforeItemUpdate(&$event)
	{
		$object =& $event->getObject();
		if($object->GetDBField('IsPrimary') && $object->Validate())
		{
			$sql = 'UPDATE '.$this->Application->getUnitOption($this->Prefix, 'TableName').'
					SET IsPrimary = 0
					WHERE CurrencyId <> '.$object->GetDBField('CurrencyId');
			$this->Conn->Query($sql);
			$object->SetDBField('Status', 1);
		}
		$object->SetDBField('Modified_date', adodb_mktime() );
		$object->SetDBField('Modified_time', adodb_mktime() );

		if($object->GetDBField('Status') == 0)
		{
			$sql = 	'DELETE FROM '.$this->Application->getUnitOption('ptc', 'TableName').
					' WHERE CurrencyId='.$object->GetDBField('CurrencyId');
			$this->Conn->Query($sql);
		}
	}

	/**
	 * Enter description here...
	 *
	 * @param kEvent $event
	 */
	function SetCustomQuery(&$event)
	{
		$object =& $event->getObject();

		$object->addFilter('current_lang', 'phr.LanguageId = '.$this->Application->GetVar('m_lang'));

		if($event->Special == 'active')
		{
			$object =& $event->getObject();
			$object->addFilter('status_filter', '%1$s.Status = 1');
		}

		if ( !$this->Application->IsAdmin() ) {
			$object->addFilter('status_filter', $object->TableName.'.Status = 1');
		}
	}

	/**
	 * Enter description here...
	 *
	 * @param kEvent $event
	 */
	function OnSave(&$event)
	{
		$this->Application->StoreVar( 'saved_curr_ids', $this->Application->RecallVar($event->Prefix.'_selected_ids') );
		parent::OnSave($event);
	}


	/**
	 * Enter description here...
	 *
	 * @param kEvent $event
	 */
	function OnDisableUnused(&$event)
	{
		if($unused_ids = $this->Application->GetVar('unused_ids'))
		{
			$sql = 'UPDATE '.$this->Application->getUnitOption($event->Prefix, 'TableName').'
					SET Status = 0
					WHERE CurrencyId IN('.$unused_ids.') AND IsPrimary <> 1';
			$this->Conn->Query($sql);
		}
	}

	/**
	 * Enter description here...
	 *
	 * @param kEvent $event
	 */
	function OnUpdateRate(&$event)
	{
		if ($this->Application->CheckPermission('SYSTEM_ACCESS.READONLY', 1)) {
			return;
		}

		$event->CallSubEvent('OnPreSave');
		$rate_source = $this->Application->ConfigValue('Comm_ExchangeRateSource');
		$rate_source_classes = Array(	2 => 'FRNYCurrencyRates',
										3 => 'ECBCurrencyRates',
										1 => 'BankLVCurrencyRates'
									);
		$rates_class = $rate_source_classes[$rate_source];
		$rates =& $this->Application->recallObject($rates_class);

		$rates->GetRatesData();
		$object =& $event->getObject();
		$iso = $object->GetDBField('ISO');
		$rates->StoreRates($iso);
		if($rates->GetRate($iso, 'PRIMARY'))
		{
			$event->status=erSUCCESS;
		}
		else
		{
			$event->status=erFAIL;
			$event->redirect=false;
			$object->FieldErrors['RateToPrimary']['pseudo'] = 'couldnt_retrieve_rate';
			$object->ErrorMsgs['couldnt_retrieve_rate'] = $this->Application->Phrase('la_couldnt_retrieve_rate');
		}
	}

	/**
	 * Enter description here...
	 *
	 * @param kEvent $event
	 */
	function OnUpdateRates(&$event)
	{
		if ($this->Application->CheckPermission('SYSTEM_ACCESS.READONLY', 1)) {
			return;
		}

		$this->StoreSelectedIDs($event);
		$event->setEventParam('ids', $this->getSelectedIDs($event) );
		$ids = $event->getEventParam('ids');

		$object =& $event->getObject();
		if(is_array($ids) && $ids[0])
		{
			$sql = 'SELECT ISO FROM '.$object->TableName.' WHERE CurrencyId IN ('.implode(',', $ids).')';
			$iso_list = $this->Conn->GetCol($sql);
		}

		$rate_source = $this->Application->ConfigValue('Comm_ExchangeRateSource');
		$rate_source_classes = Array(	2 => 'FRNYCurrencyRates',
										3 => 'ECBCurrencyRates',
										1 => 'BankLVCurrencyRates'
									);
		$rates_class = $rate_source_classes[$rate_source];
		$rates =& $this->Application->recallObject($rates_class);

		$rates->GetRatesData();

		if($iso_list)
		{
			$rates->StoreRates($iso_list);
		}
		else
		{
			$rates->StoreRates();
		}
	}

	function OnChangeCurrency(&$event)
	{
		$this->Application->StoreVar('curr_iso', $this->Application->GetVar('curr_iso'));
	}
}

?>