fixexam files

app/Controllers/View/FilesController.php

@@ -322,6 +322,23 @@ class FilesController extends Controller
         return 'teacher_file';
     }
 
+    private function resolveExamDraftAuthorIdColumn($db): string
+    {
+        try {
+            $fields = $db->getFieldNames('exam_drafts');
+            if (in_array('teacher_id', $fields, true)) {
+                return 'teacher_id';
+            }
+            if (in_array('author_id', $fields, true)) {
+                return 'author_id';
+            }
+        } catch (\Throwable $e) {
+            log_message('error', 'FilesController::resolveExamDraftAuthorIdColumn error: ' . $e->getMessage());
+        }
+
+        return 'teacher_id';
+    }
+
     private function canAccessExamDraftFile(string $filename, string $subdir): bool
     {
         $userId = (int) (session()->get('user_id') ?? 0);
@@ -330,15 +347,16 @@ class FilesController extends Controller
         }
 
         $role = strtolower((string) (session()->get('role') ?? ''));
-        if ($role === 'admin') {
+        if (in_array($role, ['admin', 'administrator', 'principal'], true)) {
             return true;
         }
 
         $db = Database::connect();
         $fileColumn = $subdir === 'finals' ? 'final_file' : $this->resolveExamDraftFileColumn($db);
+        $authorIdColumn = $this->resolveExamDraftAuthorIdColumn($db);
 
         $draft = $db->table('exam_drafts ed')
-            ->select('ed.class_section_id, ed.school_year, ed.teacher_id, ed.author_id')
+            ->select('ed.class_section_id, ed.school_year, ed.semester, ed.status, ed.' . $authorIdColumn . ' AS draft_author_id')
             ->where('ed.' . $fileColumn, $filename)
             ->limit(1)
             ->get()
@@ -348,7 +366,7 @@ class FilesController extends Controller
             return false;
         }
 
-        $authorId = (int) ($draft['teacher_id'] ?? $draft['author_id'] ?? 0);
+        $authorId = (int) ($draft['draft_author_id'] ?? 0);
         if ($authorId > 0 && $authorId === $userId) {
             return true;
         }
@@ -358,16 +376,53 @@ class FilesController extends Controller
             return false;
         }
 
+        $status = strtolower(trim((string) ($draft['status'] ?? '')));
+        if ($subdir === 'drafts' && $status === 'draft') {
+            return false;
+        }
+
+        $currentSchoolYear = trim((string) (session()->get('school_year') ?? ''));
+        $currentSemester = trim((string) (session()->get('semester') ?? ''));
+        $draftSchoolYear = trim((string) ($draft['school_year'] ?? ''));
+        $draftSemester = trim((string) ($draft['semester'] ?? ''));
+
+        $hasCurrentAssignment = $db->table('teacher_class')
+            ->select('id')
+            ->where('teacher_id', $userId)
+            ->where('class_section_id', $classSectionId);
+
+        if ($currentSchoolYear !== '') {
+            $hasCurrentAssignment->where('school_year', $currentSchoolYear);
+        }
+
+        $hasCurrentAssignment = $hasCurrentAssignment->limit(1)->countAllResults() > 0;
+
+        if ($hasCurrentAssignment) {
+            if ($subdir === 'finals') {
+                return true;
+            }
+
+            return $draftSchoolYear === '' || $currentSchoolYear === '' || $draftSchoolYear === $currentSchoolYear;
+        }
+
         $assignmentQuery = $db->table('teacher_class')
             ->select('id')
             ->where('teacher_id', $userId)
             ->where('class_section_id', $classSectionId);
 
-        $schoolYear = trim((string) ($draft['school_year'] ?? ''));
-        if ($schoolYear !== '') {
-            $assignmentQuery->where('school_year', $schoolYear);
+        if ($draftSchoolYear !== '') {
+            $assignmentQuery->where('school_year', $draftSchoolYear);
         }
 
-        return $assignmentQuery->limit(1)->countAllResults() > 0;
+        $hasDraftYearAssignment = $assignmentQuery->limit(1)->countAllResults() > 0;
+        if (!$hasDraftYearAssignment) {
+            return false;
+        }
+
+        if ($subdir === 'finals') {
+            return true;
+        }
+
+        return $draftSemester === '' || $currentSemester === '' || $draftSemester === $currentSemester;
     }
 }