/**
* Save & preprocess the files and trigger plagiarism plugin, if enabled, to scan the uploaded files via events trigger
*
* @global stdClass $USER
* @global moodle_database $DB
* @param stdClass $submission
* @param stdClass $data
* @return bool
*/
public function save(stdClass $submission, stdClass $data)
{
global $USER, $DB, $SESSION;
// Pre-process all files to convert to useful PDF format.
$fileoptions = $this->get_file_options();
file_postupdate_standard_filemanager($data, 'pdfs', $fileoptions, $this->assignment->get_context(), 'assignsubmission_pdf', ASSIGNSUBMISSION_PDF_FA_DRAFT, $submission->id);
$pdfsubmission = $this->get_pdf_submission($submission->id);
// Plagiarism code event trigger when files are uploaded.
$fs = get_file_storage();
$files = $fs->get_area_files($this->assignment->get_context()->id, 'assignsubmission_pdf', ASSIGNSUBMISSION_PDF_FA_DRAFT, $submission->id, "id", false);
// Check all files are PDF v1.4 or less.
$submissionok = true;
foreach ($files as $key => $file) {
if (!AssignPDFLib::ensure_pdf_compatible($file)) {
$filename = $file->get_filename();
$file->delete();
unset($files[$key]);
if (!isset($SESSION->assignsubmission_pdf_invalid)) {
$SESSION->assignsubmission_pdf_invalid = array();
}
$SESSION->assignsubmission_pdf_invalid[] = $filename;
$submissionok = false;
}
}
if (!$submissionok) {
return false;
}
$templatedata = null;
if (isset($data->pdf_template)) {
$templatedata = serialize($data->pdf_template);
}
$count = $this->count_files($submission->id, ASSIGNSUBMISSION_PDF_FA_DRAFT);
// Send files to event system.
// Let Moodle know that an assessable file was uploaded (eg for plagiarism detection).
$eventdata = new stdClass();
$eventdata->modulename = 'assign';
$eventdata->cmid = $this->assignment->get_course_module()->id;
$eventdata->itemid = $submission->id;
$eventdata->courseid = $this->assignment->get_course()->id;
$eventdata->userid = $USER->id;
if ($count > 1) {
$eventdata->files = $files;
// This is depreceated - please use pathnamehashes instead!
}
$eventdata->file = $files;
// This is depreceated - please use pathnamehashes instead!
$eventdata->pathnamehashes = array_keys($files);
events_trigger('assessable_file_uploaded', $eventdata);
if ($pdfsubmission) {
$pdfsubmission->numpages = 0;
$pdfsubmission->templatedata = $templatedata;
$DB->update_record('assignsubmission_pdf', $pdfsubmission);
} else {
$pdfsubmission = new stdClass();
$pdfsubmission->submission = $submission->id;
$pdfsubmission->assignment = $this->assignment->get_instance()->id;
$pdfsubmission->numpages = 0;
$pdfsubmission->templatedata = $templatedata;
$DB->insert_record('assignsubmission_pdf', $pdfsubmission);
}
if (!$this->assignment->get_instance()->submissiondrafts) {
// No 'submit assignment' button - need to submit immediately.
$this->submit_for_grading($submission);
}
return true;
}
public function test_ensure_pdf_compatible()
{
$fs = get_file_storage();
// Test a file that is already PDF version 1.4.
$pdf = new AssignPDFLib();
$filerecord = array('contextid' => context_system::instance()->id, 'component' => 'assignfeedback_pdf', 'filearea' => 'phpunit', 'itemid' => 0, 'filepath' => '/', 'filename' => 'testfileok.pdf');
$fileok = $fs->create_file_from_pathname($filerecord, self::pdf_path('1'));
$result = $pdf->ensure_pdf_compatible($fileok);
$this->assertEquals(true, $result);
// Checking has gone OK.
$outfile = $this->tempdir . '/pdfout.pdf';
$fileok->copy_content_to($outfile);
$pagecount = $pdf->load_pdf($outfile);
$this->assertEquals(17, $pagecount);
// File can be loaded by the pdf library.
// Test a file that is PDF version 1.5.
$pdf = new AssignPDFLib();
$filerecord = array('contextid' => context_system::instance()->id, 'component' => 'assignfeedback_pdf', 'filearea' => 'phpunit', 'itemid' => 0, 'filepath' => '/', 'filename' => 'testfileconvert.pdf');
$fileconvert = $fs->create_file_from_pathname($filerecord, self::pdf_path('convert'));
$result = $pdf->ensure_pdf_compatible($fileconvert);
$this->assertEquals(true, $result);
// Checking has gone OK.
$outfile = $this->tempdir . '/pdfout.pdf';
$fileconvert->copy_content_to($outfile);
$pagecount = $pdf->load_pdf($outfile);
$this->assertEquals(3, $pagecount);
// File can be loaded by the pdf library.
}
