421 lines
14 KiB
PHP
421 lines
14 KiB
PHP
<?php
|
|
// This file is part of Moodle - http://moodle.org/
|
|
//
|
|
// Moodle 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 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// Moodle 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 Moodle. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
/**
|
|
* Class represents a customcert template.
|
|
*
|
|
* @copyright 2015 Mark Nelson <markn@moodle.com>
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
*/
|
|
|
|
namespace mod_customcert;
|
|
|
|
defined('MOODLE_INTERNAL') || die();
|
|
|
|
/**
|
|
* Class represents a customcert template.
|
|
*
|
|
* @copyright 2016 Mark Nelson <markn@moodle.com>
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
*/
|
|
class template {
|
|
|
|
/**
|
|
* @var int $id The id of the template.
|
|
*/
|
|
protected $id;
|
|
|
|
/**
|
|
* @var string $name The name of this template
|
|
*/
|
|
protected $name;
|
|
|
|
/**
|
|
* @var int $contextid The context id of this template
|
|
*/
|
|
protected $contextid;
|
|
|
|
/**
|
|
* The constructor.
|
|
*
|
|
* @param \stdClass $template
|
|
*/
|
|
public function __construct($template) {
|
|
$this->id = $template->id;
|
|
$this->name = $template->name;
|
|
$this->contextid = $template->contextid;
|
|
}
|
|
|
|
/**
|
|
* Handles saving data.
|
|
*
|
|
* @param \stdClass $data the template data
|
|
*/
|
|
public function save($data) {
|
|
global $DB;
|
|
|
|
$savedata = new \stdClass();
|
|
$savedata->id = $this->id;
|
|
$savedata->name = $data->name;
|
|
$savedata->timemodified= time();
|
|
|
|
$DB->update_record('customcert_templates', $savedata);
|
|
}
|
|
|
|
/**
|
|
* Handles adding another page to the template.
|
|
*
|
|
* @return int the id of the page
|
|
*/
|
|
public function add_page() {
|
|
global $DB;
|
|
|
|
// Set the page number to 1 to begin with.
|
|
$sequence = 1;
|
|
// Get the max page number.
|
|
$sql = "SELECT MAX(sequence) as maxpage
|
|
FROM {customcert_pages} cp
|
|
WHERE cp.templateid = :templateid";
|
|
if ($maxpage = $DB->get_record_sql($sql, array('templateid' => $this->id))) {
|
|
$sequence = $maxpage->maxpage + 1;
|
|
}
|
|
|
|
// New page creation.
|
|
$page = new \stdClass();
|
|
$page->templateid = $this->id;
|
|
$page->width = '210';
|
|
$page->height = '297';
|
|
$page->sequence = $sequence;
|
|
$page->timecreated = time();
|
|
$page->timemodified = $page->timecreated;
|
|
|
|
// Insert the page.
|
|
return $DB->insert_record('customcert_pages', $page);
|
|
}
|
|
|
|
/**
|
|
* Handles saving page data.
|
|
*
|
|
* @param \stdClass $data the template data
|
|
*/
|
|
public function save_page($data) {
|
|
global $DB;
|
|
|
|
// Set the time to a variable.
|
|
$time = time();
|
|
|
|
// Get the existing pages and save the page data.
|
|
if ($pages = $DB->get_records('customcert_pages', array('templateid' => $data->tid))) {
|
|
// Loop through existing pages.
|
|
foreach ($pages as $page) {
|
|
// Get the name of the fields we want from the form.
|
|
$width = 'pagewidth_' . $page->id;
|
|
$height = 'pageheight_' . $page->id;
|
|
$leftmargin = 'pageleftmargin_' . $page->id;
|
|
$rightmargin = 'pagerightmargin_' . $page->id;
|
|
// Create the page data to update the DB with.
|
|
$p = new \stdClass();
|
|
$p->id = $page->id;
|
|
$p->width = $data->$width;
|
|
$p->height = $data->$height;
|
|
$p->leftmargin = $data->$leftmargin;
|
|
$p->rightmargin = $data->$rightmargin;
|
|
$p->timemodified = $time;
|
|
// Update the page.
|
|
$DB->update_record('customcert_pages', $p);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Handles deleting the template.
|
|
*
|
|
* @return bool return true if the deletion was successful, false otherwise
|
|
*/
|
|
public function delete() {
|
|
global $CFG, $DB;
|
|
|
|
// Delete the elements.
|
|
$sql = "SELECT e.*
|
|
FROM {customcert_elements} e
|
|
INNER JOIN {customcert_pages} p
|
|
ON e.pageid = p.id
|
|
WHERE p.templateid = :templateid";
|
|
if ($elements = $DB->get_records_sql($sql, array('templateid' => $this->id))) {
|
|
foreach ($elements as $element) {
|
|
// Get an instance of the element class.
|
|
if ($e = \mod_customcert\element::instance($element)) {
|
|
$e->delete();
|
|
} else {
|
|
// The plugin files are missing, so just remove the entry from the DB.
|
|
$DB->delete_records('customcert_elements', array('id' => $element->id));
|
|
}
|
|
}
|
|
}
|
|
|
|
// Delete the pages.
|
|
if (!$DB->delete_records('customcert_pages', array('templateid' => $this->id))) {
|
|
return false;
|
|
}
|
|
|
|
// Now, finally delete the actual template.
|
|
if (!$DB->delete_records('customcert_templates', array('id' => $this->id))) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Handles deleting a page from the template.
|
|
*
|
|
* @param int $pageid the template page
|
|
*/
|
|
public function delete_page($pageid) {
|
|
global $DB;
|
|
|
|
// Get the page.
|
|
$page = $DB->get_record('customcert_pages', array('id' => $pageid), '*', MUST_EXIST);
|
|
|
|
// Delete this page.
|
|
$DB->delete_records('customcert_pages', array('id' => $page->id));
|
|
|
|
// The element may have some extra tasks it needs to complete to completely delete itself.
|
|
if ($elements = $DB->get_records('customcert_elements', array('pageid' => $page->id))) {
|
|
foreach ($elements as $element) {
|
|
// Get an instance of the element class.
|
|
if ($e = \mod_customcert\element::instance($element)) {
|
|
$e->delete();
|
|
} else {
|
|
// The plugin files are missing, so just remove the entry from the DB.
|
|
$DB->delete_records('customcert_elements', array('id' => $element->id));
|
|
}
|
|
}
|
|
}
|
|
|
|
// Now we want to decrease the page number values of
|
|
// the pages that are greater than the page we deleted.
|
|
$sql = "UPDATE {customcert_pages}
|
|
SET sequence = sequence - 1
|
|
WHERE templateid = :templateid
|
|
AND sequence > :sequence";
|
|
$DB->execute($sql, array('templateid' => $this->id, 'sequence' => $page->sequence));
|
|
}
|
|
|
|
/**
|
|
* Handles deleting an element from the template.
|
|
*
|
|
* @param int $elementid the template page
|
|
*/
|
|
public function delete_element($elementid) {
|
|
global $DB;
|
|
|
|
// Ensure element exists and delete it.
|
|
$element = $DB->get_record('customcert_elements', array('id' => $elementid), '*', MUST_EXIST);
|
|
|
|
// Get an instance of the element class.
|
|
if ($e = \mod_customcert\element::instance($element)) {
|
|
$e->delete();
|
|
} else {
|
|
// The plugin files are missing, so just remove the entry from the DB.
|
|
$DB->delete_records('customcert_elements', array('id' => $elementid));
|
|
}
|
|
|
|
// Now we want to decrease the sequence numbers of the elements
|
|
// that are greater than the element we deleted.
|
|
$sql = "UPDATE {customcert_elements}
|
|
SET sequence = sequence - 1
|
|
WHERE pageid = :pageid
|
|
AND sequence > :sequence";
|
|
$DB->execute($sql, array('pageid' => $element->pageid, 'sequence' => $element->sequence));
|
|
}
|
|
|
|
/**
|
|
* Generate the PDF for the template.
|
|
*
|
|
* @param bool $preview true if it is a preview, false otherwise
|
|
* @param int $userid the id of the user whose certificate we want to view
|
|
*/
|
|
public function generate_pdf($preview = false, $userid = null) {
|
|
global $CFG, $DB, $USER;
|
|
|
|
if (empty($userid)) {
|
|
$user = $USER;
|
|
} else {
|
|
$user = \core_user::get_user($userid);
|
|
}
|
|
|
|
require_once($CFG->libdir . '/pdflib.php');
|
|
|
|
// Get the pages for the template, there should always be at least one page for each template.
|
|
if ($pages = $DB->get_records('customcert_pages', array('templateid' => $this->id), 'sequence ASC')) {
|
|
// Create the pdf object.
|
|
$pdf = new \pdf();
|
|
|
|
// If the template belongs to a certificate then we need to check what permissions we set for it.
|
|
if ($protection = $DB->get_field('customcert', 'protection', array('templateid' => $this->id))) {
|
|
if (!empty($protection)) {
|
|
$protection = explode(', ', $protection);
|
|
$pdf->SetProtection($protection);
|
|
}
|
|
}
|
|
|
|
$pdf->setPrintHeader(false);
|
|
$pdf->setPrintFooter(false);
|
|
$pdf->SetTitle($this->name);
|
|
$pdf->SetAutoPageBreak(true, 0);
|
|
// Remove full-stop at the end, if it exists, to avoid "..pdf" being created and being filtered by clean_filename.
|
|
$filename = rtrim($this->name, '.');
|
|
$filename = clean_filename($filename . '.pdf');
|
|
// Loop through the pages and display their content.
|
|
foreach ($pages as $page) {
|
|
// Add the page to the PDF.
|
|
if ($page->width > $page->height) {
|
|
$orientation = 'L';
|
|
} else {
|
|
$orientation = 'P';
|
|
}
|
|
$pdf->AddPage($orientation, array($page->width, $page->height));
|
|
$pdf->SetMargins($page->leftmargin, 0, $page->rightmargin);
|
|
// Get the elements for the page.
|
|
if ($elements = $DB->get_records('customcert_elements', array('pageid' => $page->id), 'sequence ASC')) {
|
|
// Loop through and display.
|
|
foreach ($elements as $element) {
|
|
// Get an instance of the element class.
|
|
if ($e = \mod_customcert\element::instance($element)) {
|
|
$e->render($pdf, $preview, $user);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
$pdf->Output($filename, 'D');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Handles moving an item on a template.
|
|
*
|
|
* @param string $itemname the item we are moving
|
|
* @param int $itemid the id of the item
|
|
* @param string $direction the direction
|
|
*/
|
|
public function move_item($itemname, $itemid, $direction) {
|
|
global $DB;
|
|
|
|
$table = 'customcert_';
|
|
if ($itemname == 'page') {
|
|
$table .= 'pages';
|
|
} else { // Must be an element.
|
|
$table .= 'elements';
|
|
}
|
|
|
|
if ($moveitem = $DB->get_record($table, array('id' => $itemid))) {
|
|
// Check which direction we are going.
|
|
if ($direction == 'up') {
|
|
$sequence = $moveitem->sequence - 1;
|
|
} else { // Must be down.
|
|
$sequence = $moveitem->sequence + 1;
|
|
}
|
|
// Get the item we will be swapping with it.
|
|
$swapitem = $DB->get_record($table, array('sequence' => $sequence));
|
|
}
|
|
|
|
// Check that there is an item to move, and an item to swap it with.
|
|
if ($moveitem && !empty($swapitem)) {
|
|
$DB->set_field($table, 'sequence', $swapitem->sequence, array('id' => $moveitem->id));
|
|
$DB->set_field($table, 'sequence', $moveitem->sequence, array('id' => $swapitem->id));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the id of the template.
|
|
*
|
|
* @return int the id of the template
|
|
*/
|
|
public function get_id() {
|
|
return $this->id;
|
|
}
|
|
|
|
/**
|
|
* Returns the name of the template.
|
|
*
|
|
* @return string the name of the template
|
|
*/
|
|
public function get_name() {
|
|
return $this->name;
|
|
}
|
|
|
|
/**
|
|
* Returns the context id.
|
|
*
|
|
* @return int the context id
|
|
*/
|
|
public function get_contextid() {
|
|
return $this->contextid;
|
|
}
|
|
|
|
/**
|
|
* Returns the context id.
|
|
*
|
|
* @return \context the context
|
|
*/
|
|
public function get_context() {
|
|
return \context::instance_by_id($this->contextid);
|
|
}
|
|
|
|
/**
|
|
* Returns the context id.
|
|
*
|
|
* @return \context_module|null the context module, null if there is none
|
|
*/
|
|
public function get_cm() {
|
|
$context = $this->get_context();
|
|
if ($context->contextlevel === CONTEXT_MODULE) {
|
|
return get_coursemodule_from_id('customcert', $context->instanceid, 0, false, MUST_EXIST);
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Ensures the user has the proper capabilities to manage this template.
|
|
*
|
|
* @throws \required_capability_exception if the user does not have the necessary capabilities (ie. Fred)
|
|
*/
|
|
public function require_manage() {
|
|
require_capability('mod/customcert:manage', $this->get_context());
|
|
}
|
|
|
|
/**
|
|
* Creates a template.
|
|
*
|
|
* @param string $templatename the name of the template
|
|
* @param int $contextid the context id
|
|
* @return \mod_customcert\template the template object
|
|
*/
|
|
public static function create($templatename, $contextid) {
|
|
global $DB;
|
|
|
|
$template = new \stdClass();
|
|
$template->name = $templatename;
|
|
$template->contextid = $contextid;
|
|
$template->timecreated = time();
|
|
$template->timemodified = $template->timecreated;
|
|
$template->id = $DB->insert_record('customcert_templates', $template);
|
|
|
|
return new \mod_customcert\template($template);
|
|
}
|
|
}
|