<?php

/**
 * OrangeHRM is a comprehensive Human Resource Management (HRM) System that captures
 * all the essential functionalities required for any enterprise.
 * Copyright (C) 2006 OrangeHRM Inc., http://www.orangehrm.com
 *
 * OrangeHRM is free software; you can redistribute it and/or modify it under the terms of
 * the GNU General Public License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * OrangeHRM 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program;
 * if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA  02110-1301, USA
 *
 */

/**
 * Description of viewLeaveBalanceReportAction
 */
class viewLeaveBalanceReportAction extends sfAction {

    public function getForm() {
        return new LeaveBalanceReportForm();
    }
    
    public function getMode() {
        return "admin";
    }
    
    protected function getFormDefaults() {
        $defaults = $this->form->getDefaults();
        
        // Form defaults are in the user date format, convert to standard date format
        $pattern = sfContext::getInstance()->getUser()->getDateFormat();
        $localizationService = new LocalizationService();
        
        $defaults['date']['from'] = $localizationService->convertPHPFormatDateToISOFormatDate($pattern, $defaults['date']['from']);
        $defaults['date']['to'] = $localizationService->convertPHPFormatDateToISOFormatDate($pattern, $defaults['date']['to']);  

        return $defaults;
    }
    
    public function execute($request) {
       
        $this->form = $this->getForm();
        $this->mode = $this->getMode();

        $runReport = false;
        $values = array();
        
        if ($request->isMethod('post')) {

            $this->form->bind($request->getParameter($this->form->getName()));

            if ($this->form->isValid()) {
                $reportType = $this->form->getValue('report_type');
                if ($reportType != 0) {
                    $values = $this->form->getValues();          
                    
                    // check permission
                    if (!$this->checkPermissions($this->mode, $reportType, $values)) {
                        //$this->getUser()->setFlash('warning', TopLevelMessages::ACCESS_DENIED);
                        return sfView::SUCCESS;
                    }
                                
                    $runReport = true;
                }   
            }
        } else if ($this->mode == 'my') {
            $reportType = LeaveBalanceReportForm::REPORT_TYPE_EMPLOYEE;
            $values = $this->getFormDefaults();

            $runReport = true;
        }
        
        if ($runReport) {
            $this->reportType = $reportType;
            
            $reportId = ($reportType == LeaveBalanceReportForm::REPORT_TYPE_LEAVE_TYPE) ? 2 : 1;
            $values = $this->convertValues($reportType, $values);
            
            $reportBuilder = new ReportBuilder();
            $numOfRecords = $reportBuilder->getNumOfRecords($reportId, $values);
            $maxPageLimit = $noOfRecords = sfConfig::get('app_items_per_page'); //$reportBuilder->getMaxPageLimit($reportId);

            $this->pager = new SimplePager('Report', $maxPageLimit);
            $this->pager->setPage(($request->getParameter('pageNo') != '') ? $request->getParameter('pageNo') : 0);

            $this->pager->setNumResults($numOfRecords);
            $this->pager->init();
            $offset = $this->pager->getOffset();
            $offset = empty($offset) ? 0 : $offset;
            $limit = $this->pager->getMaxPerPage();

            $this->resultsSet = $reportBuilder->buildReport($reportId, $offset, $limit, $values);
            $this->fixResultset($values);

            $this->reportName = $this->getReportName($reportId);

            $headers = $reportBuilder->getDisplayHeaders($reportId);
            $this->tableHeaders = $this->fixTableHeaders($reportType, $headers);

            $this->headerInfo = $reportBuilder->getHeaderInfo($reportId);

            $this->tableWidthInfo = $reportBuilder->getTableWidth($reportId);

            $this->linkParams = $this->getLinkParams($reportType, $values);
            
        }        
    }
    protected function getLinkParams($reportType, $values) {
        $linkParams = array(
            'fromDate' => array($values['fromDate']),
            'toDate' => array($values['toDate'])
        );
        
        if ($reportType == LeaveBalanceReportForm::REPORT_TYPE_LEAVE_TYPE) {
            $linkParams['leaveTypeId'] = array($values['leaveType']);
        } else {
            $linkParams['empNumber'] = array($values['empNumber']);
        }
        
        return $linkParams;
    }

    
    protected function convertValues($reportType, $values) {
        
        $today = date('Y-m-d');
        $todayTimestamp = strtotime($today);
        
        $fromDate = $values['date']['from'];
        $fromTimestamp = strtotime($fromDate);
        
        $toDate = $values['date']['to'];
        $toTimestamp = strtotime($toDate);
        
        if ($todayTimestamp < $fromTimestamp) {
            $asOfDate = $today;
        } else if ($todayTimestamp > $toTimestamp) {
            $asOfDate = $toDate;
        } else {
            $asOfDate = $today;
        }
        $this->asOfDate = $asOfDate;
        
        
        $convertedValues = array(
            'leaveType' => $values['leave_type'],
            'empNumber' => $values['employee']['empId'],
            'fromDate' => $fromDate,
            'toDate' => $toDate,
            'asOfDate' => $asOfDate,            
        );
        
        if (isset($values['job_title']) && $values['job_title'] != 0) {
            $convertedValues['job_title'] = $values['job_title'];
        }
        
        if (isset($values['sub_unit']) && $values['sub_unit'] != 0) {
            $convertedValues['sub_unit'] = $values['sub_unit'];
        }

        if (isset($values['location']) && $values['location'] != 0 && $values['location'] != -1) {
            $location = $values['location'];
            $locationIds = explode(',', $location);
            $convertedValues['location'] = $locationIds;
        }

        if (!isset($values['include_terminated']) || $values['include_terminated'] != 'on') {
            $convertedValues['terminated'] = 'TRUE';
        }
        
        if ($this->mode != 'my') {
                    
            $userRoleManager = $this->getContext()->getUserRoleManager();
            if ($reportType == LeaveBalanceReportForm::REPORT_TYPE_LEAVE_TYPE) {
                $convertedValues['emp_numbers'] = $userRoleManager->getAccessibleEntityIds('Employee');
            }
        }
        return $convertedValues;
    }
    
    protected function checkPermissions($mode, $reportType, $values) {
        
        $permitted = false;
        
        $dataGroupPermissions = $this->getDataGroupPermissions();
        
        if ($dataGroupPermissions->canRead()) {
            if ($mode == 'my') {
                if ($reportType == LeaveBalanceReportForm::REPORT_TYPE_EMPLOYEE) {
                    if ($values['employee']['empId'] == $this->getUser()->getAttribute('auth.empNumber')) {
                        $permitted = true;
                    }
                }
            } else {
                if ($reportType == LeaveBalanceReportForm::REPORT_TYPE_LEAVE_TYPE) {
                    $permitted = true;
                } else if ($reportType == LeaveBalanceReportForm::REPORT_TYPE_EMPLOYEE) {                
                    $userRoleManager = $this->getContext()->getUserRoleManager();
                    if ($userRoleManager->isEntityAccessible('Employee', $values['employee']['empId'])) {
                        $permitted = true;
                    }
                }
            }        
        }
        
        return $permitted;
    }
    
    /**
     * Fix table headings
     * TODO: Improve report engine to support customizable headers (eg: have a variable in the header)
     * and grouping fields from multiple tables.
     * @param type $headers
     * @return string
     */
    protected function fixTableHeaders($reportType, $headers) {

        $tableHeaders = $headers;
        
        /*$nameKey = $reportType == LeaveBalanceReportForm::REPORT_TYPE_LEAVE_TYPE ? 'personalDetails' : 'leavetype';
      
        $nameHeader = $headers[$nameKey];
        $firstHeader = $headers['g1'];
        $lastHeader = $headers['g6'];
        
        unset($headers[$nameKey]);
        unset($headers['g1']);
        unset($headers['g6']);
        
        $date = $this->form->getValue('date');
        $firstHeader['groupHeader'] = __('As of') . ' ' . set_datepicker_date_format($date['from']);
        $lastHeader['groupHeader'] = __('As of') . ' ' . set_datepicker_date_format(date(time()));         

        
        $otherHeaders = array('groupHeader' => __('From') . ' ' . set_datepicker_date_format($date['from']) . ' ' .
                __('To') . ' ' . set_datepicker_date_format($date['to']));
        
        foreach ($headers as $header) {
            foreach ($header as $key => $label) {
                if ($key != 'groupHeader') {
                    $otherHeaders[$key] = $label;                    
                }
            }
        }
        
        $tableHeaders = array('first' => $nameHeader,
                              'second' => $firstHeader,
                              'rest' => $otherHeaders,
                              'last' => $lastHeader);
        //print_r($tableHeaders);
        
        $tableHeaders = array(
            'leavetype' => array('groupHeader' => '', 'leaveType' => 'Leave Type'),
            'g1' => array('groupHeader' => '', 'entitlement' => 'Entitlements valid as of ' . set_datepicker_date_format($this->asOfDate)), 
            'g2' => array('groupHeader' => '',  'entitlement2' => 'Total Entitlments valid for the period'),
            'g3' => array('groupHeader' => '',  'closing' => 'Leave Balance as of ' . set_datepicker_date_format($this->asOfDate)),
            'g4' => array('groupHeader' => '',  'scheduled' => 'Leave Scheduled'),
            'g5' => array('groupHeader' => '',  'taken' => 'Leave Taken')            
        );
        
        */
        return $tableHeaders;
    }
    
    protected function getDataGroupPermissions() {
        return $this->getContext()->getUserRoleManager()->getDataGroupPermissions(array('leave_entitlements_usage_report'));
    }    
    
    protected function fixResultset($values, $formatNumbers = true) {
        $keep = array();
        
        $configService = new LeaveConfigurationService();
        $includePending = $configService->includePendingLeaveInBalance();        
        
        for ($i = 0; $i < count($this->resultsSet); $i++) {
            $total = isset($this->resultsSet[$i]['entitlement_total']) ? $this->resultsSet[$i]['entitlement_total'] : 0;
            $scheduled = isset($this->resultsSet[$i]['scheduled']) ? $this->resultsSet[$i]['scheduled'] : 0;
            $taken = isset($this->resultsSet[$i]['taken']) ? $this->resultsSet[$i]['taken'] : 0;
            $pending = isset($this->resultsSet[$i]['pending']) ? $this->resultsSet[$i]['pending'] : 0;
            $exclude = isset($this->resultsSet[$i]['exclude_if_no_entitlement']) ? $this->resultsSet[$i]['exclude_if_no_entitlement'] : 0;
            
            if (($total == 0) && ($scheduled == 0) && ($taken == 0) && ($exclude == 1)) {

            } else {
                $unused = $this->getValue($total) - $this->getValue($scheduled) - $this->getValue($taken);
                
                if ($includePending) {
                    $unused = $unused - $this->getValue($pending);
                }
                $this->resultsSet[$i]['unused'] = number_format($unused,2);
                
                if (isset($this->resultsSet[$i]['employeeName']) && isset($this->resultsSet[$i]['termination_id'])) {
                    
                    $this->resultsSet[$i]['employeeName'] = $this->resultsSet[$i]['employeeName'] . " (" . __("Past Employee") . ")";
                }
                if (isset($this->resultsSet[$i]['leaveType']) && isset($this->resultsSet[$i]['leave_type_deleted'])
                        && $this->resultsSet[$i]['leave_type_deleted'] == 1) {
                    
                    $this->resultsSet[$i]['leaveType'] = $this->resultsSet[$i]['leaveType'] . " (" . __("Deleted") . ")";
                }
                
                if ($formatNumbers) {
                    $this->resultsSet[$i]['entitlement_total'] = number_format($this->resultsSet[$i]['entitlement_total'], 2);
                    $this->resultsSet[$i]['scheduled'] = number_format($this->resultsSet[$i]['scheduled'], 2);
                    $this->resultsSet[$i]['pending'] = number_format($this->resultsSet[$i]['pending'], 2);
                    $this->resultsSet[$i]['taken'] = number_format($this->resultsSet[$i]['taken'], 2);
                    $this->resultsSet[$i]['unused'] = number_format($this->resultsSet[$i]['unused'], 2);
                }
                
                $keep[] = $this->resultsSet[$i];
            }
        }
        $this->resultsSet = $keep;
    }
    
    protected function getValue($value) {
        if (empty($value)) {
            $value = 0;
        }
                
        return $value;
    }
    private function getReportName($reportId) {
        $dao = new ReportDefinitionDao();
        $report = $dao->getReport($reportId);
        $reportName = $report->getName();
        return $reportName;
    }
    
}