<?php
        require_once(dirname(dirname(dirname(dirname(__FILE__)))) . "/engine/start.php");
        global $CONFIG;
        
        // Only works for administrators
        admin_gatekeeper();

        $ke_tcpdf_installation_path = get_plugin_setting('ke_tcpdf_installation_path', 'koolielu');

        // If no TCPDF path is set, notify user about it
        if (empty($ke_tcpdf_installation_path)) {
            header('Content-type: text/plain');
            header('Content-Disposition: attachment; filename="error.txt"');
            /*translation:TCPDF library path not set. Please visit koolielu plugin settings page and set that.*/
            echo elgg_echo('koolielu:error_tcpdf_libraty_path_not_set');
            exit;
        }
        // Check if TCPDF library is present before trying to load it
        if (file_exists($ke_tcpdf_installation_path . "config/lang/eng.php") && file_exists($ke_tcpdf_installation_path . "tcpdf.php")) {
            require_once($ke_tcpdf_installation_path . "config/lang/eng.php");
            require_once($ke_tcpdf_installation_path . "tcpdf.php");
        } else {
            header('Content-type: text/plain');
            header('Content-Disposition: attachment; filename="error.txt"');
            /*translation:TCPDF library not found. Please make sure that you have the library installed and try again.*/
            echo elgg_echo('koolielu:error_tcpdf_not_installed');
            exit;
        }
        // Check for parameters to be present is implemented with Javascript
        $user_id = get_input("certificates_user_helper");
        $school_name = get_input("certificates_school_name");
        $school_address = get_input("certificates_school_address");
        $postal_index = get_input("certificates_school_postal_index");
        $school_location = get_input("certificates_school_location");
        $materials = get_input("certificates_materials");
        $director = get_input("certificates_director");
        $compiler_name = get_input("certificates_compiler_name");
        $compiler_email = get_input("certificates_compiler_email");
        $compiler_phone = get_input("certificates_compiler_phone");


        $moderators_array = array();
        $materials_array = array();
        if (!empty($materials)) {
            $materials_array = explode(",", $materials);
        }
        if (!is_array($materials_array)) {
            $materials_array = array($materials_array);
        }

        if (class_exists("TCPDF", false)) {

            class MYPDF extends TCPDF {
                // Page header
                public function Header() {
                    $this->setY(15);
                }

                // Page footer
                public function Footer() {
                    $this->setY(-15);
                    $this->SetFont('freeserif', '', 12);
                    /*translation:Page*/
                    $this->Cell(0, 10, elgg_echo("koolielu:certificate_page") . ' ' . $this->getAliasNumPage() . '/'.$this->getAliasNbPages(), 0, 0, 'C');
                }
            }

            // Create new PDF document
            $pdf = new MYPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);

            // set document information
            $pdf->SetCreator(PDF_CREATOR);
            $pdf->SetAuthor($compiler_name);
            $pdf->SetTitle('Tiger Leap Foundation Certificate');
            $pdf->SetSubject('Tiger Leap Foundation Certificate');
            $pdf->SetKeywords(' ');

            // set header data
            $pdf->SetHeaderData(PDF_HEADER_LOGO, PDF_HEADER_LOGO_WIDTH, PDF_HEADER_TITLE, PDF_HEADER_STRING);

            // set header and footer fonts
            $pdf->setHeaderFont(Array(PDF_FONT_NAME_MAIN, '', PDF_FONT_SIZE_MAIN));
            $pdf->setFooterFont(Array(PDF_FONT_NAME_DATA, '', PDF_FONT_SIZE_DATA));

            // set default monospaced font
            $pdf->SetDefaultMonospacedFont(PDF_FONT_MONOSPACED);

            // set margins: left, top, right
            $pdf->SetMargins(30, 15, 15);
            $pdf->SetHeaderMargin(PDF_MARGIN_HEADER);
            $pdf->SetFooterMargin(PDF_MARGIN_FOOTER);

            // set auto page breaks
            $pdf->SetAutoPageBreak(TRUE, PDF_MARGIN_BOTTOM);

            // set image scale factor
            $pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);

            // set font
            $pdf->SetFont('freeserif', '', 12);

            // add a page
            $pdf->AddPage();

            // Header contents
            $pdf->Cell(0, 30, "", 0, 1, "L", 0);
            $pdf->Cell(0, 0, $school_name, 0, 1, "L", 0);
            $pdf->Cell(0, 0, $school_address, 0, 1, "L", 0);
            $pdf->MultiCell(120, 0, $postal_index . " " . $school_location, 0, "L", 0, 0, '', '', true );
            $pdf->MultiCell(40, 0, date("m.d.Y"), 0, "R", 0, 1, '', '', true);

            // Main contents start
            $pdf->Cell(0, 20, "", 0, 1, "L", 0);
            /*translation:CERTIFICATE*/
            $pdf->Cell(0, 0, elgg_echo("koolielu:certificate_certificate"), 0, 1, "L", 0);
            $pdf->Cell(0, 10, "", 0, 1, "L", 0);
            /*translation:Tiger Leap Foundation proves, that following learning materials have been published in Koolielu learning portal (www.koolielu.ee), the author of which is*/
            $pdf->MultiCell(0, 0, elgg_echo("koolielu:certificate_maintext") . " " . get_user($user_id)->name . ":", 0, "L", 0, 1, '', '', true);
            $pdf->Cell(0, 5, "", 0, 1, "L", 0);

            // Materials part
            foreach ($materials_array as $key => $single_material_id) {
                try {
                    $material_object = waramu_getResource("", $single_material_id);
                    $material_moderator_id = waramu_getResourceModerator($material_object->uid);
                    if ($material_moderator_id && !in_array($material_moderator_id, $moderators_array)) {
                        $moderators_array[] = $material_moderator_id;
                    }
                    $pdf->MultiCell(0, 0, $material_object->getTitle() . " " . $CONFIG->wwwroot . "pg/waramu/view/" . $material_object->uid, 0, "L", 0, 1, '', '', true);
                } catch (Exception $exe) {
                    // Waramu could not return the material, ignoring it
                }
            }
            // Deal with moderators
            $approved_by = "";
            foreach($moderators_array as $key => $value) {
                $username = get_user($value)->name;
                if ($username) {
                    if (!empty($approved_by)) $approved_by .= ", ";
                    $approved_by .= $username;
                }
            }
            $pdf->Cell(0, 5, "", 0, 1, "L", 0);
            /*translation:Learning materials have been reviewed and published by following subject moderators of Koolielu portal*/
            $pdf->MultiCell(0, 0, elgg_echo("koolielu:certificate_approved_by") . " " . $approved_by, 0, "L", 0 , 1, '', '', true);


            // Footer contents
            $pdf->Cell(0, 20, "", 0, 1, "L", 0);
            $pdf->Cell(0, 0, $director, 0, 1, "L", 0);
            /*translation:Director*/
            $pdf->Cell(0, 0, elgg_echo("koolielu:certificate_director"), 0, 1, "L", 0);
            $pdf->Cell(0, 20, "", 0, 1, "L", 0);
            $pdf->Cell(0, 0, $compiler_name . " " . $compiler_phone, 0, 1, "L", 0);
            $pdf->Cell(0, 0, $compiler_email, 0, 1, "L", 0);

            // set a background color
            $pdf->SetFillColor(230, 240, 255, true);

            // Add a row to the generated certificates table
            koolielu_add_certificate_generated(get_loggedin_userid(), $user_id, serialize($materials_array));

            // Close and output PDF document
            $pdf->Output('certificate.pdf', 'D');
        }
?>