Files
alrahma_sunday_school/app/Controllers/View/ExamDraftController.php
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2026-04-18 11:44:02 -04:00

1434 lines
59 KiB
PHP

<?php
namespace App\Controllers\View;
use App\Controllers\BaseController;
use App\Models\ClassSectionModel;
use App\Models\ConfigurationModel;
use App\Models\ExamDraftModel;
use App\Models\StudentClassModel;
use App\Models\TeacherClassModel;
use App\Models\UserModel;
use CodeIgniter\HTTP\Files\UploadedFile;
use Config\Database;
class ExamDraftController extends BaseController
{
protected ExamDraftModel $examDraftModel;
protected TeacherClassModel $teacherClassModel;
protected ClassSectionModel $classSectionModel;
protected StudentClassModel $studentClassModel;
protected UserModel $userModel;
protected ConfigurationModel $configModel;
protected string $schoolYear;
protected string $semester;
protected bool $hasFinalPdfColumn = false;
protected bool $hasIsLegacyColumn = false;
protected bool $hasAcceptanceTypeColumn = false;
protected bool $hasAdminIdColumn = false;
protected bool $hasReviewRevisionColumn = false;
protected bool $hasReviewerCommentColumn = false;
protected bool $hasReviewerCommentsColumn = false;
protected bool $hasAdminCommentsColumn = false;
protected string $authorIdColumn = 'teacher_id';
protected string $authorFileColumn = 'teacher_file';
protected string $authorFilenameColumn = 'teacher_filename';
protected string $reviewerIdColumn = 'admin_id';
protected string $reviewerCommentColumn = 'reviewer_comment';
// DB status: submitted, accepted, review needed, rejected, canceled, under review, legacy
protected const TEACHER_UPLOAD_DIR = 'exams/drafts';
protected const FINAL_UPLOAD_DIR = 'exams/finals';
protected const MAX_UPLOAD_BYTES = 12 * 1024 * 1024;
protected const ALLOWED_EXTENSIONS = ['doc', 'docx'];
protected const ADMIN_ALLOWED_EXTENSIONS = ['doc', 'docx', 'pdf'];
protected array $examTypes = [
'Final Exam',
'Midterm Exam',
'Quiz',
'Study Guide',
'Practice Exam',
'Other',
];
public function __construct()
{
$this->examDraftModel = new ExamDraftModel();
$this->teacherClassModel = new TeacherClassModel();
$this->classSectionModel = new ClassSectionModel();
$this->studentClassModel = new StudentClassModel();
$this->userModel = new UserModel();
$this->configModel = new ConfigurationModel();
$this->db = Database::connect();
$this->schoolYear = (string) ($this->configModel->getConfig('school_year') ?? '');
$this->semester = (string) ($this->configModel->getConfig('semester') ?? '');
$this->hasFinalPdfColumn = $this->schemaHasColumn('exam_drafts', 'final_pdf_file');
$this->hasIsLegacyColumn = $this->schemaHasColumn('exam_drafts', 'is_legacy');
$this->hasAcceptanceTypeColumn = $this->schemaHasColumn('exam_drafts', 'acceptance_type');
$this->hasAdminIdColumn = $this->schemaHasColumn('exam_drafts', 'admin_id');
$this->hasReviewRevisionColumn = $this->schemaHasColumn('exam_drafts', 'review_revision');
$this->hasReviewerCommentColumn = $this->schemaHasColumn('exam_drafts', 'reviewer_comment');
$this->hasReviewerCommentsColumn = $this->schemaHasColumn('exam_drafts', 'reviewer_comments');
$this->hasAdminCommentsColumn = $this->schemaHasColumn('exam_drafts', 'admin_comments');
$this->authorIdColumn = $this->schemaHasColumn('exam_drafts', 'teacher_id') ? 'teacher_id' : 'author_id';
$this->authorFileColumn = $this->schemaHasColumn('exam_drafts', 'teacher_file') ? 'teacher_file' : 'author_file';
$this->authorFilenameColumn = $this->schemaHasColumn('exam_drafts', 'teacher_filename') ? 'teacher_filename' : 'author_filename';
$this->reviewerIdColumn = $this->hasAdminIdColumn
? 'admin_id'
: ($this->schemaHasColumn('exam_drafts', 'reviewer_id') ? 'reviewer_id' : '');
$this->reviewerCommentColumn = $this->schemaHasColumn('exam_drafts', 'reviewer_comment')
? 'reviewer_comment'
: ($this->schemaHasColumn('exam_drafts', 'reviewer_comments')
? 'reviewer_comments'
: ($this->schemaHasColumn('exam_drafts', 'admin_comments') ? 'admin_comments' : ''));
helper(['form', 'url', 'date']);
}
public function teacherIndex()
{
$teacherId = (int) (session()->get('user_id') ?? 0);
if ($teacherId <= 0) {
return redirect()->to('/login');
}
$assignments = $this->teacherClassModel->getClassAssignmentsByUserId($teacherId, $this->schoolYear);
$selectedClass = $this->resolveSelectedClassSection($assignments);
if ($selectedClass > 0) {
session()->set('class_section_id', $selectedClass);
}
$allDrafts = $this->examDraftModel
->select($this->draftSelectColumns())
->select('cs.class_section_name')
->join('classSection cs', 'cs.class_section_id = exam_drafts.class_section_id', 'left')
->where($this->authorIdColumn, $teacherId)
->orderBy('created_at', 'DESC')
->findAll();
foreach ($allDrafts as &$row) {
if (empty($row['final_pdf_file'])) {
$pdf = $this->ensurePdfExists($row['final_file'] ?? '', pathinfo($row['final_file'] ?? '', PATHINFO_EXTENSION));
if ($pdf !== null) {
$row['final_pdf_file'] = $pdf;
}
}
}
unset($row);
$classSectionIds = array_map(static fn($a) => (int) $a['class_section_id'], $assignments);
$legacyExams = [];
// Guard against missing schema column in older databases
if ($this->hasIsLegacyColumn) {
// Keep all submissions visible; legacy ones are also surfaced in a separate tab
$drafts = $allDrafts;
$legacyQuery = $this->examDraftModel
->select($this->draftSelectColumns())
->select('cs.class_section_name')
->join('classSection cs', 'cs.class_section_id = exam_drafts.class_section_id', 'left')
->where('exam_drafts.is_legacy', 1)
->where('exam_drafts.status', 'legacy')
->where('exam_drafts.final_file IS NOT NULL', null, false);
if (!empty($classSectionIds)) {
$legacyQuery = $legacyQuery->whereIn('exam_drafts.class_section_id', $classSectionIds);
}
$legacyExams = $legacyQuery
->orderBy('cs.class_section_name', 'ASC')
->orderBy('exam_drafts.created_at', 'DESC')
->findAll();
} else {
// Legacy column absent, show all drafts and skip legacy tab query
$drafts = $allDrafts;
}
$printablePool = array_merge($drafts, $legacyExams);
$printableIds = $this->printableDraftIds($printablePool);
if ($this->hasReviewRevisionColumn) {
$drafts = $this->groupReviewRevisions($drafts);
$legacyExams = $this->groupReviewRevisions($legacyExams);
}
$drafts = $this->attachPrintableFlags($drafts, $printableIds);
$legacyExams = $this->attachPrintableFlags($legacyExams, $printableIds);
$validation = session()->getFlashdata('validation') ?? $this->validator;
return view('teacher/drafts', [
'assignments' => $assignments,
'selectedClassSection' => $selectedClass,
'drafts' => $drafts,
'legacyExams' => $legacyExams,
'examTypes' => $this->examTypes,
'statusBadges' => $this->statusBadgeMap(),
'schoolYear' => $this->schoolYear,
'semester' => $this->semester,
'maxUploadBytes' => self::MAX_UPLOAD_BYTES,
'validation' => $validation,
'printableDraftIds' => $printableIds,
]);
}
public function teacherStore()
{
$teacherId = (int) (session()->get('user_id') ?? 0);
if ($teacherId <= 0) {
return redirect()->to('/login');
}
$classSectionId = (int) ($this->request->getPost('class_section_id') ?? session()->get('class_section_id') ?? 0);
$examType = $this->normalizeExamType($this->request->getPost('exam_type'));
$authorComment = trim((string) $this->request->getPost('author_comment'));
if ($classSectionId <= 0) {
return redirect()->back()->withInput()->with('error', 'Select a class section before submitting.');
}
$assignment = $this->teacherClassModel
->where('teacher_id', $teacherId)
->where('class_section_id', $classSectionId)
->first();
if (empty($assignment)) {
return redirect()->back()->withInput()->with('error', 'You are not assigned to the selected class section.');
}
session()->set('class_section_id', $classSectionId);
$saveAsDraft = $this->request->getPost('action') === 'draft'
|| !empty($this->request->getPost('save_as_draft'));
$file = $this->request->getFile('draft_file');
$teacherFile = null;
$teacherFilename = null;
if ($file && $file->isValid() && !$file->hasMoved()) {
$stored = $this->storeUploadedFile($file, self::TEACHER_UPLOAD_DIR);
if ($stored === null) {
return redirect()->back()->withInput()->with('error', 'Failed to store the uploaded file.');
}
$teacherFile = $stored;
$teacherFilename = $file->getClientName();
} elseif ($file && $file->getError() !== UPLOAD_ERR_NO_FILE) {
return redirect()->back()->withInput()->with('error', 'Upload failed. Please try again.');
}
$existingDraft = $this->examDraftModel
->select($this->draftSelectColumns())
->where($this->authorIdColumn, $teacherId)
->where('class_section_id', $classSectionId)
->where('semester', $this->semester)
->where('school_year', $this->schoolYear)
->orderBy('version', 'DESC')
->first();
if ($examType === '') {
return redirect()->back()->withInput()->with('error', 'Select an exam type before submitting.');
}
$title = $examType;
if ($saveAsDraft) {
if ($teacherFile === null && (empty($existingDraft) || empty($this->draftTeacherFile($existingDraft)))) {
return redirect()->back()->withInput()->with('error', 'Upload a file to save a draft.');
}
if (!empty($existingDraft) && strtolower((string) ($existingDraft['status'] ?? '')) === 'draft') {
$draftRowId = (int) ($existingDraft['id'] ?? 0);
$updateDraft = [
'exam_type' => $examType,
'draft_title' => $title,
'author_comment' => $authorComment === '' ? null : $authorComment,
'status' => 'draft',
];
$this->applyAuthorFilePayload($updateDraft, $teacherFile, $teacherFilename);
if ($this->examDraftModel->update($draftRowId, $updateDraft)) {
$this->notifyExamDraftEvent($this->examDraftModel->find($draftRowId), 'draft_saved');
return redirect()->to('/teacher/exam-drafts')->with('success', 'Draft saved.');
}
return redirect()->back()->withInput()->with('error', 'Unable to update the draft.');
}
$nextVersion = 1;
$previousId = null;
if (!empty($existingDraft)) {
$currentVersion = (int) ($existingDraft['version'] ?? 0);
if ($currentVersion <= 0) {
$currentVersion = 1;
}
$nextVersion = $currentVersion + 1;
$previousId = (int) ($existingDraft['id'] ?? 0) ?: null;
}
$payload = [
$this->authorIdColumn => $teacherId,
'class_section_id' => $classSectionId,
'semester' => $this->semester,
'school_year' => $this->schoolYear,
'exam_type' => $examType,
'draft_title' => $title,
'author_comment' => $authorComment === '' ? null : $authorComment,
'status' => 'draft',
'version' => $nextVersion,
'previous_draft_id' => $previousId,
];
$this->applyAuthorFilePayload($payload, $teacherFile, $teacherFilename);
if ($this->examDraftModel->insert($payload)) {
$newDraftId = (int) $this->examDraftModel->getInsertID();
$this->notifyExamDraftEvent($newDraftId > 0 ? $this->examDraftModel->find($newDraftId) : null, 'draft_saved');
return redirect()->to('/teacher/exam-drafts')->with('success', 'Draft saved.');
}
return redirect()->back()->withInput()->with('error', 'Unable to save the draft.');
}
$existingStatus = strtolower((string) ($existingDraft['status'] ?? ''));
if ($teacherFile === null) {
return redirect()->back()->withInput()->with('error', 'Upload a DOC/DOCX file to submit the exam draft.');
}
// Submit for review: overwrite only if latest is already submitted; otherwise create a new version.
if (!empty($existingDraft) && $existingStatus === 'submitted') {
$draftRowId = (int) ($existingDraft['id'] ?? 0);
$updateSubmit = [
'exam_type' => $examType,
'draft_title' => $title,
'author_comment' => $authorComment === '' ? null : $authorComment,
'status' => 'submitted',
];
$this->applyAuthorFilePayload($updateSubmit, $teacherFile, $teacherFilename);
if ($this->examDraftModel->update($draftRowId, $updateSubmit)) {
$saved = $this->ensureDraftStatus($draftRowId, 'submitted');
$this->notifyPrincipalExamDraftSubmitted($saved, $teacherId, $classSectionId);
$this->notifyExamDraftEvent($saved, 'submitted');
return redirect()->to('/teacher/exam-drafts')->with('success', 'Exam draft submitted for review.');
}
return redirect()->back()->withInput()->with('error', 'Unable to submit the exam draft.');
}
$nextVersion = 1;
$previousId = null;
if (!empty($existingDraft)) {
$currentVersion = (int) ($existingDraft['version'] ?? 0);
if ($currentVersion <= 0) {
$currentVersion = 1;
}
$nextVersion = $currentVersion + 1;
$previousId = (int) ($existingDraft['id'] ?? 0) ?: null;
}
$payload = [
$this->authorIdColumn => $teacherId,
'class_section_id' => $classSectionId,
'semester' => $this->semester,
'school_year' => $this->schoolYear,
'exam_type' => $examType,
'draft_title' => $title,
'author_comment' => $authorComment === '' ? null : $authorComment,
'status' => 'submitted',
'version' => $nextVersion,
'previous_draft_id' => $previousId,
];
$this->applyAuthorFilePayload($payload, $teacherFile, $teacherFilename);
if ($this->examDraftModel->insert($payload)) {
$newId = (int) $this->examDraftModel->getInsertID();
$saved = $newId > 0 ? $this->ensureDraftStatus($newId, 'submitted') : null;
$this->notifyPrincipalExamDraftSubmitted($saved, $teacherId, $classSectionId);
$this->notifyExamDraftEvent($saved, 'submitted');
return redirect()->to('/teacher/exam-drafts')->with('success', 'Exam draft submitted for review.');
}
return redirect()->back()->withInput()->with('error', 'Unable to save the exam draft.');
}
public function adminIndex()
{
if ($this->reviewerIdColumn !== '') {
$allDrafts = $this->examDraftModel
->select($this->draftSelectColumns())
->select('cs.class_section_name, u.firstname AS teacher_first, u.lastname AS teacher_last, a.firstname AS admin_first, a.lastname AS admin_last')
->join('classSection cs', 'cs.class_section_id = exam_drafts.class_section_id', 'left')
->join('users u', 'u.id = exam_drafts.' . $this->authorIdColumn, 'left')
->join('users a', 'a.id = exam_drafts.' . $this->reviewerIdColumn, 'left')
->orderBy('exam_drafts.created_at', 'DESC')
->findAll();
} else {
$allDrafts = $this->examDraftModel
->select($this->draftSelectColumns())
->select('cs.class_section_name, u.firstname AS teacher_first, u.lastname AS teacher_last, NULL AS admin_first, NULL AS admin_last', false)
->join('classSection cs', 'cs.class_section_id = exam_drafts.class_section_id', 'left')
->join('users u', 'u.id = exam_drafts.' . $this->authorIdColumn, 'left')
->orderBy('exam_drafts.created_at', 'DESC')
->findAll();
}
if ($this->hasReviewRevisionColumn) {
$allDrafts = $this->groupReviewRevisions($allDrafts);
}
foreach ($allDrafts as &$row) {
if (empty($row['final_pdf_file'])) {
$pdf = $this->ensurePdfExists($row['final_file'] ?? '', pathinfo($row['final_file'] ?? '', PATHINFO_EXTENSION));
if ($pdf !== null) {
$row['final_pdf_file'] = $pdf;
}
}
}
unset($row);
$classSections = $this->classSectionModel
->select('class_section_id, class_section_name')
->orderBy('class_section_name', 'ASC')
->findAll();
// Group legacy uploads (admin-uploaded accepted exams) by class_section for separate tab
$legacyByClass = [];
if ($this->hasIsLegacyColumn) {
// Keep legacy items out of the main submissions list; show them in the legacy tab only.
$drafts = [];
foreach ($allDrafts as $d) {
$isLegacy = !empty($d['is_legacy']);
if ($isLegacy) {
$cid = (int)($d['class_section_id'] ?? 0);
if (!isset($legacyByClass[$cid])) {
$legacyByClass[$cid] = [
'class_section_id' => $cid,
'class_section_name' => $d['class_section_name'] ?? 'Class ' . $cid,
'items' => [],
];
}
$legacyByClass[$cid]['items'][] = $d;
continue;
}
$drafts[] = $d;
}
} else {
// Column missing: keep behavior simple and avoid legacy tab
$drafts = $allDrafts;
}
$legacyFlat = [];
foreach ($legacyByClass as $group) {
foreach ($group['items'] ?? [] as $item) {
$legacyFlat[] = $item;
}
}
$printablePool = array_merge($drafts, $legacyFlat);
$printableIds = $this->printableDraftIds($printablePool);
$drafts = $this->attachPrintableFlags($drafts, $printableIds);
foreach ($legacyByClass as &$group) {
$group['items'] = $this->attachPrintableFlags($group['items'] ?? [], $printableIds);
}
unset($group);
$classSectionsById = [];
foreach ($classSections as $cs) {
$csId = (int) ($cs['class_section_id'] ?? 0);
if ($csId <= 0) {
continue;
}
$classSectionsById[$csId] = $cs;
}
$studentCounts = $this->studentClassModel->getStudentCountsBySection($this->schoolYear);
$visibleClasses = [];
foreach ($studentCounts as $csId => $count) {
$csId = (int) $csId;
if ($csId <= 0 || $count <= 0) {
continue;
}
$classData = $classSectionsById[$csId] ?? $this->classSectionModel->where('class_section_id', $csId)->first();
if ($classData === null) {
$classData = [
'class_section_id' => $csId,
'class_section_name' => 'Class ' . $csId,
];
}
$classData['student_count'] = $count;
$visibleClasses[$csId] = $classData;
}
uasort($visibleClasses, static fn ($a, $b): int => strcasecmp($a['class_section_name'] ?? '', $b['class_section_name'] ?? ''));
$classDraftGroups = [];
foreach ($drafts as $draft) {
$cid = (int) ($draft['class_section_id'] ?? 0);
if ($cid <= 0) {
continue;
}
$classDraftGroups[$cid][] = $draft;
}
$newSubmissionClasses = [];
foreach ($classDraftGroups as $cid => $group) {
foreach ($group as $draft) {
if (strtolower((string) ($draft['status'] ?? '')) === 'submitted') {
$newSubmissionClasses[$cid] = true;
break;
}
}
}
return view('administrator/exam_drafts', [
'drafts' => $drafts,
'statusBadges' => $this->statusBadgeMap(),
'schoolYear' => $this->schoolYear,
'semester' => $this->semester,
'allowedExtensions' => self::ADMIN_ALLOWED_EXTENSIONS,
'maxUploadBytes' => self::MAX_UPLOAD_BYTES,
'examTypes' => $this->examTypes,
'classSections' => $classSections,
'legacyByClass' => $legacyByClass,
'printableDraftIds' => $printableIds,
'visibleClasses' => $visibleClasses,
'classDraftGroups' => $classDraftGroups,
'newSubmissionClasses' => $newSubmissionClasses,
]);
}
public function adminUploadLegacy()
{
$adminId = (int) (session()->get('user_id') ?? 0);
if ($adminId <= 0) {
return redirect()->to('/login');
}
$classSectionIds = $this->request->getPost('class_section_ids');
if (!is_array($classSectionIds)) {
$classSectionIds = [$classSectionIds];
}
$classSectionIds = array_values(array_filter(array_map('intval', $classSectionIds)));
$schoolYear = trim((string) ($this->request->getPost('school_year') ?? $this->schoolYear));
$semester = trim((string) ($this->request->getPost('semester') ?? $this->semester));
$examType = $this->normalizeExamType($this->request->getPost('exam_type'));
if (empty($classSectionIds)) {
return redirect()->back()->withInput()->with('error', 'Select at least one class section.');
}
if ($schoolYear === '') {
return redirect()->back()->withInput()->with('error', 'School year is required.');
}
if ($semester === '') {
return redirect()->back()->withInput()->with('error', 'Semester is required.');
}
if ($examType === '') {
return redirect()->back()->withInput()->with('error', 'Exam type is required.');
}
$file = $this->request->getFile('old_exam_file');
if (!$file || !$file->isValid()) {
return redirect()->back()->withInput()->with('error', 'A valid file is required.');
}
$stored = $this->storeUploadedFile($file, self::FINAL_UPLOAD_DIR, self::ADMIN_ALLOWED_EXTENSIONS);
if ($stored === null) {
return redirect()->back()->withInput()->with('error', 'File type not allowed or upload failed.');
}
$pdfName = null;
if (strtolower($file->getClientExtension()) === 'pdf') {
$pdfName = $stored;
} else {
$pdfName = $this->convertDocToPdf(
$this->fullUploadPath(self::FINAL_UPLOAD_DIR, $stored),
self::FINAL_UPLOAD_DIR
);
}
$basePayload = [
$this->authorIdColumn => $adminId, // store under admin user since legacy uploads are admin-only
'semester' => ucfirst(strtolower($semester)),
'school_year' => $schoolYear,
'exam_type' => $examType,
'draft_title' => $examType,
'author_comment' => null,
'final_file' => $stored,
'final_filename' => $file->getClientName(),
'status' => 'legacy',
'reviewed_at' => utc_now(),
'version' => 1,
];
if ($this->reviewerIdColumn !== '') {
$basePayload[$this->reviewerIdColumn] = $adminId;
}
if ($this->hasIsLegacyColumn) {
$basePayload['is_legacy'] = 1;
}
if ($pdfName !== null && $this->hasFinalPdfColumn) {
$basePayload['final_pdf_file'] = $pdfName;
}
$saved = 0;
foreach ($classSectionIds as $classSectionId) {
$payload = $basePayload;
$payload['class_section_id'] = $classSectionId;
if ($this->examDraftModel->insert($payload)) {
$saved++;
}
}
if ($saved > 0) {
return redirect()->to('/administrator/exam-drafts')->with('success', 'Old exam uploaded successfully.');
}
return redirect()->back()->withInput()->with('error', 'Unable to save the old exam.');
}
public function adminReview()
{
$draftId = (int) ($this->request->getPost('draft_id') ?? 0);
if ($draftId <= 0) {
return redirect()->back()->with('error', 'Invalid submission selected.');
}
$draft = $this->findDraft($draftId);
if (empty($draft)) {
return redirect()->back()->with('error', 'Submission not found.');
}
$reviewerComment = trim((string) ($this->request->getPost('reviewer_comment') ?? $this->request->getPost('admin_comments')));
$statusInput = trim((string) $this->request->getPost('review_status'));
$currentStatus = (string) ($draft['status'] ?? 'draft');
$status = $this->normalizeStatus(
$statusInput !== '' ? $statusInput : $currentStatus,
$currentStatus
);
$status = strtolower($status);
if (!in_array($status, $this->statusOptions(), true)) {
$status = 'under review';
}
$acceptanceType = null;
if ($status === 'accepted') {
$rawAccept = strtolower(trim((string) $this->request->getPost('acceptance_type')));
$acceptanceType = in_array($rawAccept, ['as_is', 'minor_edits'], true) ? $rawAccept : 'as_is';
}
$finalFile = null;
$finalFilename = null;
$file = $this->request->getFile('final_file');
if ($file && $file->isValid() && !$file->hasMoved()) {
$stored = $this->storeUploadedFile($file, self::FINAL_UPLOAD_DIR, self::ADMIN_ALLOWED_EXTENSIONS);
if ($stored === null) {
return redirect()->back()->with('error', 'Unable to store the final draft.')->withInput();
}
$finalFile = $stored;
$finalFilename = $file->getClientName();
if ($status === 'accepted') {
$status = 'accepted';
}
} elseif ($file && $file->getError() !== UPLOAD_ERR_NO_FILE) {
return redirect()->back()->with('error', 'Final file upload failed.');
}
$update = [
'status' => $status,
'reviewed_at' => utc_now(),
];
$existingComment = (string) ($draft['reviewer_comment'] ?? $draft['reviewer_comments'] ?? $draft['admin_comments'] ?? '');
$commentValue = $reviewerComment === '' ? null : $this->appendReviewerComment($existingComment, $reviewerComment);
if ($this->hasReviewerCommentColumn) {
$update['reviewer_comment'] = $commentValue;
}
if ($this->hasReviewerCommentsColumn) {
$update['reviewer_comments'] = $commentValue;
}
if ($this->hasAdminCommentsColumn) {
$update['admin_comments'] = $commentValue;
}
if ($this->reviewerIdColumn !== '') {
$update[$this->reviewerIdColumn] = (int) (session()->get('user_id') ?? 0);
}
if ($this->hasAcceptanceTypeColumn) {
$update['acceptance_type'] = $status === 'accepted' ? $acceptanceType : null;
}
if ($finalFile !== null) {
$baseVersion = (int) ($draft['version'] ?? 1);
if ($baseVersion <= 0) {
$baseVersion = 1;
}
$reviewRevision = $this->nextReviewRevision($draft, $baseVersion);
$reviewExamType = $this->normalizeExamType($draft['exam_type'] ?? $draft['draft_title'] ?? '');
if ($reviewExamType === '') {
return redirect()->back()->with('error', 'This draft is missing an exam type. Update the exam type before reviewing.');
}
$newRow = [
$this->authorIdColumn => $this->draftTeacherId($draft),
'class_section_id' => (int) ($draft['class_section_id'] ?? 0),
'semester' => (string) ($draft['semester'] ?? ''),
'school_year' => (string) ($draft['school_year'] ?? ''),
'exam_type' => $reviewExamType,
'draft_title' => $draft['draft_title'] ?? $reviewExamType,
'author_comment' => $draft['author_comment'] ?? null,
'status' => $status,
'reviewed_at' => $update['reviewed_at'],
'version' => $baseVersion,
'previous_draft_id' => (int) ($draft['id'] ?? 0) ?: null,
];
if ($this->hasReviewRevisionColumn) {
$newRow['review_revision'] = $reviewRevision;
}
if ($this->hasReviewerCommentColumn) {
$newRow['reviewer_comment'] = $commentValue;
}
if ($this->hasReviewerCommentsColumn) {
$newRow['reviewer_comments'] = $commentValue;
}
if ($this->hasAdminCommentsColumn) {
$newRow['admin_comments'] = $commentValue;
}
if ($this->reviewerIdColumn !== '') {
$newRow[$this->reviewerIdColumn] = $update[$this->reviewerIdColumn] ?? null;
}
if ($this->hasAcceptanceTypeColumn) {
$newRow['acceptance_type'] = $status === 'accepted' ? $acceptanceType : null;
}
$teacherFile = $this->draftTeacherFile($draft);
if (!empty($teacherFile)) {
$newRow[$this->authorFileColumn] = $teacherFile;
$newRow[$this->authorFilenameColumn] = $this->draftTeacherFilename($draft) ?? $teacherFile;
}
if ($this->hasIsLegacyColumn && !empty($draft['is_legacy'])) {
$newRow['is_legacy'] = 1;
}
$newRow['final_file'] = $finalFile;
$newRow['final_filename'] = $finalFilename;
$pdfName = $this->ensurePdfExists($finalFile, $file ? $file->getClientExtension() : null);
if ($pdfName !== null && $this->hasFinalPdfColumn) {
$newRow['final_pdf_file'] = $pdfName;
}
if ($this->examDraftModel->insert($newRow)) {
$newId = (int) $this->examDraftModel->getInsertID();
$after = $newId > 0 ? $this->examDraftModel->find($newId) : null;
$this->notifyExamDraftEvent($after, 'review_' . $status);
return redirect()->back()->with('success', 'Review saved successfully.');
}
return redirect()->back()->with('error', 'Unable to save the review.');
} elseif (strtolower($status) === 'accepted' && !empty($this->draftTeacherFile($draft))) {
$copied = $this->copyDraftToFinal($this->draftTeacherFile($draft));
if ($copied !== null) {
$update['final_file'] = $copied;
$update['final_filename'] = $this->draftTeacherFilename($draft) ?? $this->draftTeacherFile($draft);
$pdfName = $this->ensurePdfExists($copied, pathinfo($copied, PATHINFO_EXTENSION));
if ($pdfName !== null && $this->hasFinalPdfColumn) {
$update['final_pdf_file'] = $pdfName;
}
}
}
if ($status === 'legacy') {
$this->prepareLegacyPdfVersion($update, $draft);
}
if ($this->hasIsLegacyColumn) {
$update['is_legacy'] = strtolower($status) === 'legacy' ? 1 : 0;
}
$updated = $this->examDraftModel
->set($update)
->where('id', $draftId)
->update();
if ($updated) {
$after = $this->examDraftModel->find($draftId);
$this->notifyExamDraftEvent($after, 'review_' . $status);
return redirect()->back()->with('success', 'Review saved successfully.');
}
return redirect()->back()->with('error', 'Unable to save the review.');
}
public function teacherPrint(int $id)
{
$teacherId = (int) (session()->get('user_id') ?? 0);
if ($teacherId <= 0) {
return redirect()->to('/login');
}
$draft = $this->findDraft($id);
if (empty($draft) || $this->draftTeacherId($draft) !== $teacherId) {
return redirect()->to('/teacher/exam-drafts')->with('error', 'Submission not found.');
}
$all = $this->examDraftModel
->select($this->draftSelectColumns())
->where($this->authorIdColumn, $teacherId)
->findAll();
$printable = $this->printableDraftIds($all);
if (!in_array($id, $printable, true)) {
return redirect()->to('/teacher/exam-drafts')->with('error', 'Only the latest accepted revision can be printed.');
}
return $this->streamFinalPdf($draft);
}
public function teacherStatusFeed()
{
$teacherId = (int) (session()->get('user_id') ?? 0);
if ($teacherId <= 0) {
return $this->response->setStatusCode(401);
}
$drafts = $this->examDraftModel
->select($this->draftSelectColumns())
->select('id, status, acceptance_type, updated_at, reviewed_at')
->where($this->authorIdColumn, $teacherId)
->orderBy('updated_at', 'DESC')
->findAll();
$payload = [
'drafts' => array_map(static fn(array $row): array => [
'id' => (int) ($row['id'] ?? 0),
'status' => strtolower((string) ($row['status'] ?? '')),
'acceptance_type' => (string) ($row['acceptance_type'] ?? ''),
'updated_at' => (string) ($row['updated_at'] ?? ''),
'reviewed_at' => (string) ($row['reviewed_at'] ?? ''),
], $drafts),
];
return $this->response->setJSON($payload);
}
public function adminPrint(int $id)
{
$adminId = (int) (session()->get('user_id') ?? 0);
if ($adminId <= 0) {
return redirect()->to('/login');
}
$draft = $this->findDraft($id);
if (empty($draft)) {
return redirect()->to('/administrator/exam-drafts')->with('error', 'Submission not found.');
}
$all = $this->examDraftModel->select($this->draftSelectColumns())->findAll();
$printable = $this->printableDraftIds($all);
if (!in_array($id, $printable, true)) {
return redirect()->to('/administrator/exam-drafts')->with('error', 'Only the latest accepted revision can be printed.');
}
return $this->streamFinalPdf($draft);
}
private function resolveSelectedClassSection(array $assignments): int
{
$candidate = (int) ($this->request->getGet('class_section_id') ?? session()->get('class_section_id') ?? 0);
$validIds = array_map('intval', array_column($assignments, 'class_section_id'));
if ($candidate > 0 && in_array($candidate, $validIds, true)) {
return $candidate;
}
return $validIds[0] ?? 0;
}
private function statusBadgeMap(): array
{
return [
'submitted' => [
'label' => 'Submitted',
'class' => 'bg-info text-dark',
],
'under review' => [
'label' => 'Under review',
'class' => 'bg-warning text-dark',
],
'review needed' => [
'label' => 'Review needed',
'class' => 'text-dark',
'style' => 'background-color:#fd7e14;',
],
'accepted' => [
'label' => 'Accepted',
'class' => 'bg-success text-white',
],
'legacy' => [
'label' => 'Legacy',
'class' => 'bg-secondary text-white',
],
'rejected' => [
'label' => 'Rejected',
'class' => 'bg-danger text-white',
],
'canceled' => [
'label' => 'Canceled',
'class' => 'bg-danger text-white',
],
];
}
private function draftSelectColumns(): string
{
$columns = ['exam_drafts.*'];
if ($this->authorIdColumn !== 'teacher_id') {
$columns[] = 'exam_drafts.' . $this->authorIdColumn . ' AS teacher_id';
}
if ($this->authorFileColumn !== 'teacher_file') {
$columns[] = 'exam_drafts.' . $this->authorFileColumn . ' AS teacher_file';
}
if ($this->authorFilenameColumn !== 'teacher_filename') {
$columns[] = 'exam_drafts.' . $this->authorFilenameColumn . ' AS teacher_filename';
}
return implode(', ', $columns);
}
private function applyAuthorFilePayload(array &$payload, ?string $file, ?string $filename): void
{
if ($file === null) {
return;
}
$payload[$this->authorFileColumn] = $file;
$payload[$this->authorFilenameColumn] = $filename;
}
private function draftTeacherId(array $draft): int
{
if (array_key_exists('teacher_id', $draft)) {
return (int) $draft['teacher_id'];
}
return (int) ($draft[$this->authorIdColumn] ?? 0);
}
private function draftTeacherFile(array $draft): ?string
{
if (array_key_exists('teacher_file', $draft)) {
return $draft['teacher_file'] ?? null;
}
return $draft[$this->authorFileColumn] ?? null;
}
private function draftTeacherFilename(array $draft): ?string
{
if (array_key_exists('teacher_filename', $draft)) {
return $draft['teacher_filename'] ?? null;
}
return $draft[$this->authorFilenameColumn] ?? null;
}
private function findDraft(int $id): ?array
{
return $this->examDraftModel
->select($this->draftSelectColumns())
->where('id', $id)
->first();
}
private function ensureDraftStatus(int $id, string $status): ?array
{
$saved = $this->examDraftModel->find($id);
if (empty($saved)) {
return null;
}
$current = strtolower((string) ($saved['status'] ?? ''));
if ($current !== $status) {
$this->examDraftModel->update($id, ['status' => $status]);
$saved = $this->examDraftModel->find($id);
}
return $saved;
}
private function notifyPrincipalExamDraftSubmitted(?array $draft, int $teacherId, int $classSectionId): void
{
$principalEmail = trim((string) (env('PRINCIPAL_EMAIL') ?: ''));
if ($principalEmail === '' || !filter_var($principalEmail, FILTER_VALIDATE_EMAIL)) {
return;
}
if (empty($draft)) {
return;
}
try {
$teacher = $this->userModel->find($teacherId) ?? [];
$teacherName = trim(($teacher['firstname'] ?? '') . ' ' . ($teacher['lastname'] ?? ''));
if ($teacherName === '') {
$teacherName = 'Teacher #' . $teacherId;
}
$class = $this->classSectionModel->where('class_section_id', (int) $classSectionId)->first() ?? [];
$className = $class['class_section_name'] ?? ('Class ' . $classSectionId);
$subject = 'Exam draft submitted: ' . $className;
$submittedAt = $draft['created_at'] ?? $draft['updated_at'] ?? '';
$body = '<p>A teacher has submitted a new exam draft.</p>'
. '<table style="border-collapse:collapse;">'
. '<tr><td style="padding:4px 8px;"><strong>Teacher</strong></td><td style="padding:4px 8px;">' . esc($teacherName) . '</td></tr>'
. '<tr><td style="padding:4px 8px;"><strong>Class</strong></td><td style="padding:4px 8px;">' . esc($className) . '</td></tr>'
. '<tr><td style="padding:4px 8px;"><strong>Exam type</strong></td><td style="padding:4px 8px;">' . esc($draft['exam_type'] ?? 'N/A') . '</td></tr>'
. '<tr><td style="padding:4px 8px;"><strong>Version</strong></td><td style="padding:4px 8px;">' . esc((string) ($draft['version'] ?? '')) . '</td></tr>'
. '<tr><td style="padding:4px 8px;"><strong>Status</strong></td><td style="padding:4px 8px;">' . esc((string) ($draft['status'] ?? 'submitted')) . '</td></tr>'
. '<tr><td style="padding:4px 8px;"><strong>Submitted at</strong></td><td style="padding:4px 8px;">' . esc((string) $submittedAt) . '</td></tr>'
. '</table>'
. '<p>Review drafts: <a href="' . esc(base_url('administrator/exam-drafts')) . '">Admin exam drafts</a></p>';
$mailer = \Config\Services::emailService();
$mailer->send($principalEmail, $subject, $body, 'notifications');
} catch (\Throwable $e) {
log_message('error', 'Failed to send exam draft notification: ' . $e->getMessage());
}
}
private function nextDraftVersion(array $draft): int
{
$query = $this->examDraftModel
->select('version')
->where($this->authorIdColumn, $this->draftTeacherId($draft))
->where('class_section_id', (int) ($draft['class_section_id'] ?? 0))
->where('semester', (string) ($draft['semester'] ?? ''))
->where('school_year', (string) ($draft['school_year'] ?? ''));
$examType = $draft['exam_type'] ?? null;
if ($examType === null || $examType === '') {
$query = $query->where('exam_type', null);
} else {
$query = $query->where('exam_type', $examType);
}
$latest = $query->orderBy('version', 'DESC')->first();
$current = (int) ($latest['version'] ?? 0);
if ($current <= 0) {
$current = (int) ($draft['version'] ?? 0);
}
if ($current <= 0) {
$current = 1;
}
return $current + 1;
}
private function nextReviewRevision(array $draft, int $baseVersion): int
{
if (!$this->hasReviewRevisionColumn) {
return 1;
}
$query = $this->examDraftModel
->select('review_revision')
->where($this->authorIdColumn, $this->draftTeacherId($draft))
->where('class_section_id', (int) ($draft['class_section_id'] ?? 0))
->where('semester', (string) ($draft['semester'] ?? ''))
->where('school_year', (string) ($draft['school_year'] ?? ''))
->where('version', $baseVersion);
$examType = $draft['exam_type'] ?? null;
if ($examType === null || $examType === '') {
$query = $query->where('exam_type', null);
} else {
$query = $query->where('exam_type', $examType);
}
$latest = $query->orderBy('review_revision', 'DESC')->first();
$current = (int) ($latest['review_revision'] ?? 0);
if ($current <= 0) {
$current = (int) ($draft['review_revision'] ?? 0);
}
return $current + 1;
}
private function appendReviewerComment(string $existing, string $incoming): string
{
$existing = trim($existing);
$incoming = trim($incoming);
if ($incoming === '') {
return $existing;
}
if ($existing !== '' && str_starts_with($incoming, $existing)) {
$remainder = trim(substr($incoming, strlen($existing)));
if ($remainder === '') {
return $existing;
}
$incoming = $remainder;
}
$lines = $existing === '' ? [] : preg_split('/\R/', $existing);
$lastLine = $lines ? trim((string) end($lines)) : '';
if ($lastLine !== '') {
$lastBody = preg_replace('/^\d+\-\s*/', '', $lastLine);
if ($lastBody !== null && trim($lastBody) === $incoming) {
return $existing;
}
}
$nextIndex = count($lines) + 1;
$incoming = trim(preg_replace('/\R+/', ' ', $incoming) ?? $incoming);
$lines[] = $nextIndex . '- ' . $incoming;
return implode("\n", $lines);
}
private function statusOptions(): array
{
return ['submitted', 'accepted', 'review needed', 'rejected', 'canceled', 'under review', 'legacy'];
}
private function normalizeStatus(string $input, string $default): string
{
$input = strtolower(trim($input));
$aliases = [
'submitted' => 'submitted',
'under review' => 'under review',
'under_review' => 'under review',
'reviewed' => 'review needed',
'review needed' => 'review needed',
'review_needed' => 'review needed',
'accepted' => 'accepted',
'approved' => 'accepted',
'final' => 'accepted',
'legacy' => 'legacy',
'archived' => 'legacy',
'cancelled' => 'canceled',
'cancel' => 'canceled',
'rejected' => 'rejected',
'draft' => 'submitted',
];
if (isset($aliases[$input])) {
$input = $aliases[$input];
}
return in_array($input, $this->statusOptions(), true) ? $input : $default;
}
/**
* One printable row per exam line: max(version) among accepted rows.
*
* @param list<array<string,mixed>> $rows
* @return list<int>
*/
private function printableDraftIds(array $rows): array
{
$best = [];
foreach ($rows as $row) {
if (strtolower((string) ($row['status'] ?? '')) !== 'accepted') {
continue;
}
$key = $this->examDraftLineKey($row);
$ver = (int) ($row['version'] ?? 0);
$id = (int) ($row['id'] ?? 0);
if ($id <= 0) {
continue;
}
if (!isset($best[$key]) || $ver > $best[$key]['version']) {
$best[$key] = ['version' => $ver, 'id' => $id];
}
}
return array_values(array_map(static fn(array $g): int => $g['id'], $best));
}
/**
* @param list<array<string,mixed>> $rows
* @param list<int> $printableIds
* @return list<array<string,mixed>>
*/
private function attachPrintableFlags(array $rows, array $printableIds): array
{
foreach ($rows as &$row) {
$row['is_printable'] = in_array((int) ($row['id'] ?? 0), $printableIds, true);
}
unset($row);
return $rows;
}
private function examDraftLineKey(array $row): string
{
return implode('|', [
$this->draftTeacherId($row),
(int) ($row['class_section_id'] ?? 0),
(string) ($row['school_year'] ?? ''),
strtolower(trim((string) ($row['semester'] ?? ''))),
(string) ($row['exam_type'] ?? ''),
]);
}
private function examDraftVersionKey(array $row): string
{
return implode('|', [
$this->draftTeacherId($row),
(int) ($row['class_section_id'] ?? 0),
(string) ($row['school_year'] ?? ''),
strtolower(trim((string) ($row['semester'] ?? ''))),
(string) ($row['exam_type'] ?? ''),
(int) ($row['version'] ?? 0),
]);
}
/**
* @param list<array<string,mixed>> $rows
* @return list<array<string,mixed>>
*/
private function groupReviewRevisions(array $rows): array
{
$grouped = [];
foreach ($rows as $row) {
$key = $this->examDraftVersionKey($row);
$reviewRev = (int) ($row['review_revision'] ?? 0);
if ($reviewRev > 0) {
if (!isset($grouped[$key])) {
$grouped[$key] = $row;
$grouped[$key]['_is_review_row'] = true;
$grouped[$key]['review_files'] = [];
$grouped[$key]['final_version'] = null;
$grouped[$key]['_latest_review_comment'] = null;
}
$grouped[$key]['review_files'][] = [
'review_revision' => $reviewRev,
'final_file' => $row['final_file'] ?? null,
'final_filename' => $row['final_filename'] ?? null,
'status' => $row['status'] ?? null,
];
$reviewComment = $row['reviewer_comment'] ?? $row['admin_comments'] ?? null;
if ($reviewComment !== null && $reviewComment !== '') {
$latestComment = $grouped[$key]['_latest_review_comment'] ?? null;
if ($latestComment === null || $reviewRev > (int) ($latestComment['review_revision'] ?? 0)) {
$grouped[$key]['_latest_review_comment'] = [
'review_revision' => $reviewRev,
'comment' => $reviewComment,
];
}
}
if (strtolower((string) ($row['status'] ?? '')) === 'accepted') {
$currentFinal = $grouped[$key]['final_version'] ?? null;
if ($currentFinal === null || $reviewRev > (int) ($currentFinal['review_revision'] ?? 0)) {
$grouped[$key]['final_version'] = [
'review_revision' => $reviewRev,
'final_file' => $row['final_file'] ?? null,
'final_filename' => $row['final_filename'] ?? null,
];
}
}
continue;
}
if (!isset($grouped[$key])) {
$grouped[$key] = $row;
$grouped[$key]['review_files'] = [];
continue;
}
if (!empty($grouped[$key]['_is_review_row'])) {
$reviewFiles = $grouped[$key]['review_files'] ?? [];
$latestReviewComment = $grouped[$key]['_latest_review_comment'] ?? null;
$grouped[$key] = $row;
$grouped[$key]['review_files'] = $reviewFiles;
if (!empty($latestReviewComment['comment'])) {
$grouped[$key]['reviewer_comment'] = $latestReviewComment['comment'];
}
unset($grouped[$key]['_is_review_row']);
}
}
foreach ($grouped as &$row) {
if (!empty($row['review_files']) && is_array($row['review_files'])) {
usort($row['review_files'], static fn($a, $b) => ($a['review_revision'] ?? 0) <=> ($b['review_revision'] ?? 0));
}
if (!empty($row['final_version']) && is_array($row['final_version'])) {
$row['final_file'] = $row['final_version']['final_file'] ?? $row['final_file'] ?? null;
$row['final_filename'] = $row['final_version']['final_filename'] ?? $row['final_filename'] ?? null;
}
if (empty($row['reviewer_comment']) && !empty($row['_latest_review_comment']['comment'])) {
$row['reviewer_comment'] = $row['_latest_review_comment']['comment'];
}
unset($row['_is_review_row']);
unset($row['_latest_review_comment']);
}
unset($row);
return array_values($grouped);
}
private function notifyExamDraftEvent(?array $draft, string $event): void
{
if (empty($draft)) {
return;
}
$id = (int) ($draft['id'] ?? 0);
$version = (int) ($draft['version'] ?? 1);
log_message('info', "Exam draft notification [{$event}] id={$id} version={$version}");
}
private function streamFinalPdf(array $draft)
{
$storedName = !empty($draft['final_pdf_file'])
? (string) $draft['final_pdf_file']
: (string) ($draft['final_file'] ?? '');
if ($storedName === '') {
return redirect()->back()->with('error', 'No final file is available for printing.');
}
$ext = strtolower(pathinfo($storedName, PATHINFO_EXTENSION));
if ($ext !== 'pdf') {
$pdfName = $this->ensurePdfExists($storedName, $ext);
if ($pdfName !== null) {
$storedName = $pdfName;
}
}
$path = $this->fullUploadPath(self::FINAL_UPLOAD_DIR, $storedName);
if (!is_file($path)) {
return redirect()->back()->with('error', 'The file could not be found.');
}
$downloadName = $draft['final_filename'] ?? 'exam.pdf';
if (strtolower(pathinfo($downloadName, PATHINFO_EXTENSION)) !== 'pdf') {
$downloadName = pathinfo($downloadName, PATHINFO_FILENAME) . '.pdf';
}
$body = file_get_contents($path);
if ($body === false) {
return redirect()->back()->with('error', 'Unable to read the file.');
}
return $this->response
->setContentType('application/pdf')
->setHeader('Content-Disposition', 'inline; filename="' . basename($downloadName) . '"')
->setBody($body);
}
private function storeUploadedFile(UploadedFile $file, string $subdir, array $allowedExtensions = self::ALLOWED_EXTENSIONS): ?string
{
$ext = strtolower($file->getClientExtension());
if (!in_array($ext, $allowedExtensions, true)) {
return null;
}
if ($file->getSize() > self::MAX_UPLOAD_BYTES) {
return null;
}
$destination = WRITEPATH . 'uploads/' . trim($subdir, '/');
if (!is_dir($destination)) {
mkdir($destination, 0755, true);
}
$filename = $file->getRandomName();
try {
$file->move($destination, $filename);
return $filename;
} catch (\Throwable $e) {
log_message('error', 'ExamDraftController::storeUploadedFile error: ' . $e->getMessage());
return null;
}
}
private function convertDocToPdf(string $sourcePath, string $targetSubdir): ?string
{
// Only attempt conversion for doc/docx
$ext = strtolower(pathinfo($sourcePath, PATHINFO_EXTENSION));
if (!in_array($ext, ['doc', 'docx'], true)) {
return null;
}
$targetDir = WRITEPATH . 'uploads/' . trim($targetSubdir, '/');
if (!is_dir($targetDir)) {
mkdir($targetDir, 0755, true);
}
$base = pathinfo($sourcePath, PATHINFO_FILENAME);
$targetPath = $targetDir . '/' . $base . '.pdf';
// Attempt conversion via LibreOffice if available
$cmd = 'soffice --headless --convert-to pdf --outdir ' . escapeshellarg($targetDir) . ' ' . escapeshellarg($sourcePath) . ' 2>/dev/null';
@\exec($cmd);
return is_file($targetPath) ? basename($targetPath) : null;
}
private function schemaHasColumn(string $table, string $column): bool
{
try {
$fields = $this->db->getFieldNames($table);
return in_array($column, $fields, true);
} catch (\Throwable $e) {
log_message('error', "Schema check failed for {$table}.{$column}: " . $e->getMessage());
return false;
}
}
private function fullUploadPath(string $subdir, string $filename): string
{
return WRITEPATH . 'uploads/' . trim($subdir, '/') . '/' . $filename;
}
private function neighborPdfIfExists(?string $filename, string $subdir): ?string
{
if (empty($filename)) return null;
$path = $this->fullUploadPath($subdir, $filename);
$base = pathinfo($path, PATHINFO_FILENAME);
$dir = pathinfo($path, PATHINFO_DIRNAME);
$pdfPath = $dir . '/' . $base . '.pdf';
return is_file($pdfPath) ? basename($pdfPath) : null;
}
private function ensurePdfExists(string $finalFilename, ?string $originalExt): ?string
{
$pdfNeighbor = $this->neighborPdfIfExists($finalFilename, self::FINAL_UPLOAD_DIR);
if ($pdfNeighbor !== null) {
return $pdfNeighbor;
}
$ext = strtolower((string)$originalExt);
if ($ext === 'pdf') {
// final file itself is already pdf
$path = $this->fullUploadPath(self::FINAL_UPLOAD_DIR, $finalFilename);
return is_file($path) ? $finalFilename : null;
}
return $this->convertDocToPdf(
$this->fullUploadPath(self::FINAL_UPLOAD_DIR, $finalFilename),
self::FINAL_UPLOAD_DIR
);
}
private function normalizeExamType($value): string
{
return trim((string) $value);
}
private function copyDraftToFinal(string $draftFilename): ?string
{
$source = $this->fullUploadPath(self::TEACHER_UPLOAD_DIR, $draftFilename);
if (!is_file($source)) {
return null;
}
$destinationDir = WRITEPATH . 'uploads/' . trim(self::FINAL_UPLOAD_DIR, '/');
if (!is_dir($destinationDir)) {
mkdir($destinationDir, 0755, true);
}
$ext = pathinfo($draftFilename, PATHINFO_EXTENSION);
$destName = uniqid('final_', true) . '.' . $ext;
$destPath = $destinationDir . '/' . $destName;
if (!@copy($source, $destPath)) {
return null;
}
return $destName;
}
private function prepareLegacyPdfVersion(array &$update, array $draft): void
{
$finalFile = $update['final_file'] ?? $draft['final_file'] ?? null;
if (empty($finalFile)) {
$teacherFile = $this->draftTeacherFile($draft);
if (!empty($teacherFile)) {
$copied = $this->copyDraftToFinal($teacherFile);
if ($copied !== null) {
$finalFile = $copied;
$update['final_file'] = $copied;
$update['final_filename'] = $this->draftTeacherFilename($draft) ?? $teacherFile;
}
}
}
if (empty($finalFile)) {
return;
}
$ext = strtolower(pathinfo($finalFile, PATHINFO_EXTENSION));
$pdfName = $this->ensurePdfExists($finalFile, $ext);
if ($pdfName === null) {
return;
}
$filename = $update['final_filename'] ?? $draft['final_filename'] ?? '';
$baseName = '';
if ($filename !== '') {
$baseName = pathinfo($filename, PATHINFO_FILENAME);
}
if ($baseName === '') {
$baseName = pathinfo($pdfName, PATHINFO_FILENAME);
}
if ($baseName === '') {
$baseName = 'exam';
}
$update['final_file'] = $pdfName;
$update['final_filename'] = $baseName . '.pdf';
if ($this->hasFinalPdfColumn) {
$update['final_pdf_file'] = $pdfName;
}
}
}