<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

//require phpoffice library(Spreadsheet and Writer)
use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;

//require excel styles
use PhpOffice\PhpSpreadsheet\Style\Fill;
use PhpOffice\PhpSpreadsheet\Style\Border;
use PhpOffice\PhpSpreadsheet\Style\Color;
use PhpOffice\PhpSpreadsheet\Style\Alignment;

// for column index
use PhpOffice\PhpSpreadsheet\Cell\Coordinate;

class Event_info extends MY_Controller {

    /**
     * php excel object instance variables
     *
     * @var string
     */
    private $spreadsheet;

    /**
     * no show excel file tabs
     *
     * @var string
     */
    private $reports;

    /**
     * instance variable for PhpOffice writer class
     *
     * @var string
     */
    private $writer;

    /**
     * instance variable for activesheet
     *
     * @var string
     */
    private $sheets;

    /**
     * variable for default background color
     *
     * @var string
     */
    private $default_background_color;

    /**
     * Tab title
     *
     * @var string
     */
    private $sheetTitle;

    /**
     * Holds default maximum row
     *
     * @var int
     */
    private $defaultMaximumRow;

    /**
     * Holds default column headers
     *
     * @var array
     */
    private $columnHeaders;

    /**
     * Export File Name
     *
     * @var array
     */
    private $fileName;

    public function __construct()
    {
        //parent::__construct();
        $this->my_parent_controller();
        // $this->check_session_timed_out("bo_redirect_now");
        //load language files
        $this->load_language_backoffice();
        $this->lang->load('backoffice/reports', 'fr');
        $this->lang->load('backoffice/events', 'fr');
        //load model
        $this->load->model("user_model");
        $this->load->model("event_model");
        $this->load->model("event_schedule_model");
        $this->load->model("event_registration_model");

        // Create new PHPExcel object
        $this->spreadsheet = new Spreadsheet();

        //get active sheet
        $this->sheets = $this->spreadsheet->getActiveSheet();

        //create writer object
        $this->writer = new Xlsx($this->spreadsheet); 
    }
    
// -----------------------------------------------------------------------------
    /**
     * Set execution and memory limit
     *
     * @return void
     * access public
     */
    public function setMemoryLimit()
    {
        ini_set('memory_limit', '1024M');
        ini_set('max_execution_time', (60*3));
    }

    /**
     * Set document properties
     *
     * @return void
     * access public
     */
    public function setDocumentProperties()
    {
        return $this->spreadsheet->getProperties()->setCreator("Company For Madagascar Event Management System")
         ->setLastModifiedBy("Company For Madagascar Event Management System")
         ->setTitle("Office 2007 XLSX Document")
         ->setSubject("Office 2007 XLSX  Document")
         ->setDescription("Event export file")
         ->setKeywords("office 2007 openxml php")
         ->setCategory("Export file");
    }

    /**
     * Set headers(pragma, cache control , cookies etc..)
     *
     * @param string $filename
     * @return void
     */
    public function setHeaders()
    {
        // Redirect output to a client’s web browser (Excel2007)
        header('Content-Type: application/vnd.ms-excel; charset=utf-8');
        header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
        header('Content-Disposition: attachment;filename="'.$this->fileName.'.xlsx"');
        header('Cache-Control: max-age=0');
        // header('Content-Encoding: deflate, gzip');
        header('Cache-Control: private');

        // If you're serving to IE 9, then the following may be needed
        header('Cache-Control: max-age=1');

        // If you're serving to IE over SSL, then the following may be needed
        header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
        header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT'); // always modified
        header('Cache-Control: cache, must-revalidate'); // HTTP/1.1
        header('Pragma: public'); // HTTP/1.0

        $this->writer->save('php://output');
        exit();
    }

    /**
     * Auto size columns for each worksheet
     *
     * @return void
     * access public
     */
    public function setExcelAutoSize()
    {
        // Auto size columns for each worksheet
        foreach ($this->spreadsheet->getWorksheetIterator() as $worksheet) {

            $this->spreadsheet->setActiveSheetIndex($this->spreadsheet->getIndex($worksheet));

            $sheet = $this->spreadsheet->getActiveSheet();
            $cellIterator = $sheet->getRowIterator()->current()->getCellIterator();
            $cellIterator->setIterateOnlyExistingCells(true);
            /** @var PHPExcel_Cell $cell */
            foreach ($cellIterator as $cell) {
                $sheet->getColumnDimension($cell->getColumn())->setAutoSize(true);
            }
        }
    }
    
    /**
     * Export no show file with title+date
     *
     * @param integer $eventID
     * @param integer $eventScheduleID
     * @return void
     * access private member
     */
    public function export_events_list($event_schedule_id, $event_id)
    {
        //call memory limit
        $this->setMemoryLimit();

        //call document properties
        $this->setDocumentProperties();

        //get data for populate
        $this->reportData($event_schedule_id, $event_id);

        //Call auto size function columns for active worksheet
        $this->setExcelAutoSize();

        // Set active sheet index to the first sheet, so Excel opens this as the first sheet
        $this->spreadsheet->setActiveSheetIndex(0);

        $this->setHeaders();
    }
    
    public function reportData($event_schedule_id, $event_id)
    {
        $queryData = $this->input->get();
        ini_set('memory_limit', '1024M');
        ini_set('max_execution_time', (60*3));

        $reports = array("event", "subscriber");
        $event_title = ""; $start_date_filename = "";

        foreach($reports as $sheet=>$value) {
            $options = $this->get_report($value, $event_schedule_id, $event_id,  $queryData);
            $row = 1;
            $row_cell = 2;
            $active_sheet = null;

            if ($sheet > 0) {
                $this->spreadsheet->createSheet();
                $this->spreadsheet->setActiveSheetIndex($sheet)->setTitle($this->lang->line("reports")[$value][$value."_file_name"]);
            } else {
                $this->spreadsheet->setActiveSheetIndex($sheet)->setTitle($this->lang->line("reports")[$value][$value."_file_name"]);
            }

            $col = 1;

            // Set title header on every sheet except "event"
            if($value != "event"){
                $this->event_header_title($this->spreadsheet->setActiveSheetIndex($sheet), $event_title, $options["column_names"]);
                $row= 2;
                $row_cell = 3;
            }

            if (count($options["column_names"]) > 0) {
                  $headers = ""; $datas = "";
                    foreach ($options["column_names"] as $colKey => $name) {
                        if( $name == "total_places_avl"){
                            $headers = !empty($data->{"name_header_is_combine"}) ? "total_places_avl_combine" : "total_places_avl";
                        } else if($name == "sessions"){
                            $this->spreadsheet->getActiveSheet()->getStyle('K2')->getAlignment()->setWrapText(true);
                            $headers = $name;
                        } else{
                            $headers = $name;
                        }

                        $this->spreadsheet->getActiveSheet()->setCellValueByColumnAndRow($col, $row, $this->lang->line($headers));
                        $generalStyleArray = [
                            'font' => [
                                'bold' => false,
                            ],
                            'alignment' => [
                                'horizontal' => Alignment::HORIZONTAL_CENTER,
                            ],
                            'fill' => [
                                'fillType' => Fill::FILL_SOLID,
                                'rotation' => 90,
                                'startColor' => [
                                    'argb' => '428bca',
                                ],
                                'endColor' => [
                                    'argb' => '428bca',
                                ],
                            ],
                        ];
                
                        $boderStyle = ['borderStyle' => Border::BORDER_THIN];
                        $boderStyleArray = [
                            'borders' => [
                                'top' => $boderStyle,
                                'right' => $boderStyle,
                                'left' => $boderStyle,
                                'bottom' => $boderStyle
                            ]
                        ];

                        // set style
                        $this->spreadsheet->getActiveSheet()->getStyle(Coordinate::stringFromColumnIndex($col).$row)->applyFromArray($generalStyleArray);

                        $col++;
                    }
            }

            $col = 1;

            if (count($options["data"]) > 0) {
                foreach ($options["data"] as $data) {
                    foreach ($options["column_names"] as $colKey => $name) {
                        if (trim($name) != "") {
                            $cell_value = $data->{$name};
                            if ($name == "price_rate") {
                                $cell_value = str_replace(",00", "", number_format($data->{$name}, 2, ",", " ")) . " MGA";
                            } else if($name == "event_title") {
                                $event_title = $data->{$name};
                                !$this->fileName && $this->fileName = $event_title." ".date('d-m-Y',strtotime($data->start_date));
                            } else if($name == "date_month") {
                                $cell_value = $data->{$name};
                            } else if($name == "hour") {
                                $cell_value = $data->{$name};
                            } else if($name == "description") {
                                $cell_value = strip_tags($data->{$name});
                            } else if($name == "sessions") {
                                $sessions = "";
                                for($i = 0; $i<count($data->{$name}); $i++) {
                                    $sessions = $sessions . $data->{$name}[$i]->start_date_time. ' - ' . $data->{$name}[$i]->end_date_time;
                                    if($i<count($data->{$name})-1) {
                                        $sessions = $sessions . "\n";
                                    }
                                }
                                $cell_value = $sessions;
                            } else if($name == "total_booked"){
                                $cell_value = $data->{"total_booked"};
                                if(isset($data->{"type"})) {
                                    if($data->{"type"} == 0) {
                                        $cell_value = $data->{"total_booked_ws"};
                                    }
                                }
                            }

                            $this->spreadsheet->getActiveSheet()->setCellValueByColumnAndRow($col, $row_cell, $cell_value);
                        } else {
                            $this->spreadsheet->getActiveSheet()->setCellValueByColumnAndRow($col, $row_cell, "");
                        }

                        $col++;
                    }
                    $col = 1;
                    $row_cell++;
                }
            }
        } //end of for loop
    }

    private function get_report($type, $event_schedule_id, $event_id=null, $queryData){
        switch($type){

            case "event" : return $this->event_data($event_schedule_id, $queryData);
                break;

            case "subscriber" : return $this->export_subscribers_merge($event_id);
                break;

            case "unsubscribe" : return $this->export_unsubscription($event_schedule_id);
                break;

            case "waitlist" : return $this->export_waitlist($event_schedule_id);
                break;

            default : return array();
            break;
        };
    }

    public function export_subscribers_merge($event_schedule_id)
    {
        /*BASIC SUBCRIBERS LIST EXPORT TEMPLATE*/
        $column_names = array(

            "civility",
            "last_name",
            "first_name",
            "birth_date",
            "total_booked",
            "email_address",
            "mobile_number",
            "address_1",
            "address_2",
            "country",
            "code_postal",
            "city",
            "reservation_date",
            "reservation_time",
            //"navigator",
            "reservation_status"
        );

        $subscribers = $this->event_registration_model->get_event_subscribers_with_waitlist($event_schedule_id);

        return array(
            "column_names" => $column_names,
            "data" => $subscribers
        );
    }

    public function export_unsubscription($event_schedule_id)
    {
        /*BASIC SUBCRIBERS LIST EXPORT TEMPLATE*/
        $column_names = array(

            "civility",
            "last_name",
            "first_name",
	        "birth_date",
            "total_booked",
            "number_of_place_cancelled",
            "email_address",
            "mobile_number",
            "address_1",
            "address_2",
            "country",
            "code_postal",
            "city",
            "reservation_date",
            "reservation_time",
            "date_of_cancellation",
            "time_of_cancellation",
            "navigator"

        );

        $subscribers = $this->event_registration_model->get_event_unsubscription($event_schedule_id);

        return array(
            "column_names" => $column_names,
            "data" => $subscribers
        );
    }

    public function export_waitlist($event_schedule_id)
    {
        /*BASIC SUBCRIBERS LIST EXPORT TEMPLATE*/
        $column_names = array(

            "civility",
            "last_name",
            "first_name",
	        "birth_date",
            "total_booked",
            "email_address",
            "mobile_number",
            "address_1",
            "address_2",
            "country",
            "code_postal",
            "city",
            "reservation_date",
            "reservation_time",
            "navigator"

        );

        $subscribers = $this->event_registration_model->get_event_waitlist($event_schedule_id);

        return array(
            "column_names" => $column_names,
            "data" => $subscribers
        );
    }

    private function event_header_title($objPHPExcelSheet, $event_title, $columns){
        $first_letter = Coordinate::stringFromColumnIndex(1);
        $last_letter = Coordinate::stringFromColumnIndex(count($columns));
        $header_range = "{$first_letter}1:{$last_letter}1";
        $objPHPExcelSheet->setCellValueByColumnAndRow(1, 1, mb_strtoupper($event_title));
        $objPHPExcelSheet->mergeCells($header_range);
        $generalStyleArray = [
            'font' => [
                'bold' => true,
            ],
            'alignment' => [
                'horizontal' => Alignment::HORIZONTAL_CENTER,
            ],
            'fill' => [
                'fillType' => Fill::FILL_SOLID,
                'rotation' => 90,
                'startColor' => [
                    'argb' => '428bca',
                ],
                'endColor' => [
                    'argb' => '428bca',
                ],
            ],
        ];

        $boderStyle = ['borderStyle' => Border::BORDER_THIN];
        $boderStyleArray = [
            'borders' => [
                'top' => $boderStyle,
                'right' => $boderStyle,
                'left' => $boderStyle,
                'bottom' => $boderStyle
            ]
        ];
        // set style
        $objPHPExcelSheet->getStyle($header_range)->applyFromArray($generalStyleArray);
        $objPHPExcelSheet->getRowDimension('1')->setRowHeight(40);
    }

    public function event_data($event_schedule_id, $queryData){
        /*BASIC SUBCRIBERS LIST EXPORT TEMPLATE*/
        $column_names = array("event_title", "event_type", "place_town", "date_month", "hour",
            "total_places_avl", "num_remaining_places", "price_rate","event_statuses","description", "sessions");

        $events = $this->event_model->get_events_list_export($queryData, 1, $event_schedule_id);
        $sessions = $this->event_schedule_model->get_event_schedule($events[0]->event_id);
        $events[0]=(object)array_merge((array)$events[0], ["sessions" => (array)$sessions]);
        return array(
            "column_names" => $column_names,
            "data" => $events
        );
    }
}