reconstruction of the project
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<?php
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namespace App\Services\Assignment;
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use App\Models\ClassSection;
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use App\Models\Configuration;
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use App\Models\StudentClass;
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use App\Models\TeacherClass;
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use Illuminate\Support\Collection;
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use Illuminate\Support\Facades\DB;
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class AssignmentService
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{
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public function __construct(
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protected Configuration $configurationModel,
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protected TeacherClass $teacherClassModel,
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protected StudentClass $studentClassModel,
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protected ClassSection $classSectionModel,
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) {}
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public function getCurrentSemester(): string
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{
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return (string) ($this->getConfigValue('semester') ?? '');
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}
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public function getCurrentSchoolYear(): string
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{
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return (string) ($this->getConfigValue('school_year') ?? '');
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}
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protected function getConfigValue(string $key): mixed
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{
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return $this->configurationModel
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->newQuery()
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->where('config_key', $key)
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->value('config_value');
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}
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public function getAssignmentsOverview(?string $schoolYear = null, ?string $semester = null): array
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{
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$currentSemester = $this->getCurrentSemester();
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$currentSchoolYear = $this->getCurrentSchoolYear();
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$selectedSemester = (string) ($semester ?? $currentSemester);
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$selectedYear = (string) ($schoolYear ?? $currentSchoolYear);
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$teacherClasses = $this->loadTeacherClasses($selectedYear);
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$studentClasses = $this->loadStudentClasses($selectedYear);
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$teacherBySection = $teacherClasses->groupBy('class_section_id');
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$studentBySection = $studentClasses->groupBy('class_section_id');
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$allSectionIds = $teacherBySection->keys()
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->merge($studentBySection->keys())
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->unique()
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->filter()
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->values();
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$sectionNames = $this->getSectionNamesMap($allSectionIds->all());
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$classSections = $allSectionIds->map(function ($sectionId) use (
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$teacherBySection,
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$studentBySection,
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$sectionNames,
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$currentSemester,
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$currentSchoolYear
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) {
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$teacherRows = $teacherBySection->get($sectionId, collect());
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$studentRows = $studentBySection->get($sectionId, collect());
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if ($teacherRows->isEmpty() && $studentRows->isEmpty()) {
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return null;
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}
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$mainTeachers = $teacherRows
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->where('position', 'main')
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->pluck('teacher_full_name')
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->filter()
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->unique()
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->values();
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$teacherAssistants = $teacherRows
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->where('position', 'ta')
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->pluck('teacher_full_name')
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->filter()
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->unique()
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->values();
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$semesterMeta = $this->firstNonEmpty([
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$teacherRows->pluck('semester')->first(fn ($v) => filled($v)),
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$studentRows->pluck('semester')->first(fn ($v) => filled($v)),
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$currentSemester,
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]);
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$schoolYearMeta = $this->firstNonEmpty([
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$teacherRows->pluck('school_year')->first(fn ($v) => filled($v)),
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$studentRows->pluck('school_year')->first(fn ($v) => filled($v)),
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$currentSchoolYear,
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]);
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$descriptionMeta = $this->firstNonEmpty([
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$teacherRows->pluck('description')->first(fn ($v) => filled($v)),
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$studentRows->pluck('description')->first(fn ($v) => filled($v)),
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'',
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]);
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$students = $studentRows
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->filter(fn ($row) => !empty($row->student))
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->map(function ($row) {
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$student = $row->student;
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return [
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'id' => (int) $student->id,
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'firstname' => (string) ($student->firstname ?? ''),
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'lastname' => (string) ($student->lastname ?? ''),
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'age' => $student->age,
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'gender' => (string) ($student->gender ?? ''),
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'registration_grade' => (string) ($student->registration_grade ?? ''),
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'photo_consent' => (bool) ($student->photo_consent ?? false),
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'tuition_paid' => (bool) ($student->tuition_paid ?? false),
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'school_id' => (string) ($student->school_id ?? ''),
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];
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})
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->values();
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return [
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'class_section_id' => (int) $sectionId,
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'class_section_name' => (string) ($sectionNames[$sectionId] ?? ''),
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'main_teachers' => $mainTeachers->all(),
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'teacher_assistants' => $teacherAssistants->all(),
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'students' => $students->all(),
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'semester' => (string) $semesterMeta,
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'school_year' => (string) $schoolYearMeta,
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'description' => (string) $descriptionMeta,
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];
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})
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->filter()
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->sortBy('class_section_name', SORT_NATURAL | SORT_FLAG_CASE)
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->values()
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->all();
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return [
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'classSections' => $classSections,
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'schoolYears' => $this->getSchoolYears($currentSchoolYear),
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'schoolYear' => $selectedYear,
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'selectedYear' => $selectedYear,
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'selectedSemester' => $selectedSemester,
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'semester' => $currentSemester,
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'current_school_year' => $currentSchoolYear,
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];
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}
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public function storeAssignment(array $data, int|string|null $updatedBy = null): StudentClass
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{
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return $this->studentClassModel->newQuery()->updateOrCreate(
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[
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'student_id' => $data['student_id'],
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'class_section_id' => $data['class_section_id'],
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'semester' => $data['semester'],
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'school_year' => $data['school_year'],
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],
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[
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'description' => $data['description'] ?? null,
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'updated_by' => $updatedBy,
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]
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);
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}
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public function getClassAssignmentData(): array
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{
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$currentSemester = $this->getCurrentSemester();
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$currentSchoolYear = $this->getCurrentSchoolYear();
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$teacherClasses = $this->loadTeacherClasses();
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$studentClasses = $this->loadStudentClasses();
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$teacherBySection = $teacherClasses->groupBy('class_section_id');
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$studentBySection = $studentClasses->groupBy('class_section_id');
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$allSectionIds = $teacherBySection->keys()
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->merge($studentBySection->keys())
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->unique()
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->filter()
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->values();
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$sectionNames = $this->getSectionNamesMap($allSectionIds->all());
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$classSections = $allSectionIds->map(function ($sectionId) use (
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$teacherBySection,
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$studentBySection,
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$sectionNames,
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$currentSemester,
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$currentSchoolYear
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) {
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$teacherRows = $teacherBySection->get($sectionId, collect());
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$studentRows = $studentBySection->get($sectionId, collect());
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if ($teacherRows->isEmpty() && $studentRows->isEmpty()) {
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return null;
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}
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$mainTeachers = $teacherRows
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->where('position', 'main')
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->pluck('teacher_full_name')
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->filter()
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->unique()
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->values();
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$teacherAssistants = $teacherRows
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->where('position', 'ta')
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->pluck('teacher_full_name')
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->filter()
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->unique()
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->values();
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$semesterMeta = $this->firstNonEmpty([
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$teacherRows->pluck('semester')->first(fn ($v) => filled($v)),
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$studentRows->pluck('semester')->first(fn ($v) => filled($v)),
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$currentSemester,
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]);
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$schoolYearMeta = $this->firstNonEmpty([
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$teacherRows->pluck('school_year')->first(fn ($v) => filled($v)),
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$studentRows->pluck('school_year')->first(fn ($v) => filled($v)),
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$currentSchoolYear,
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]);
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$descriptionMeta = $this->firstNonEmpty([
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$teacherRows->pluck('description')->first(fn ($v) => filled($v)),
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$studentRows->pluck('description')->first(fn ($v) => filled($v)),
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'',
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]);
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$students = $studentRows
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->filter(fn ($row) => !empty($row->student))
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->map(function ($row) {
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$student = $row->student;
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return [
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'id' => (int) $student->id,
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'firstname' => (string) ($student->firstname ?? ''),
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'lastname' => (string) ($student->lastname ?? ''),
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'age' => $student->age,
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'gender' => (string) ($student->gender ?? ''),
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'registration_grade' => (string) ($student->registration_grade ?? ''),
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'photo_consent' => (bool) ($student->photo_consent ?? false),
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'tuition_paid' => (bool) ($student->tuition_paid ?? false),
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'school_id' => (string) ($student->school_id ?? ''),
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];
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})
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->values();
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return [
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'class_section_id' => (int) $sectionId,
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'class_section_name' => (string) ($sectionNames[$sectionId] ?? ''),
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'main_teachers' => $mainTeachers->all(),
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'teacher_assistants' => $teacherAssistants->all(),
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'students' => $students->all(),
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'semester' => (string) $semesterMeta,
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'school_year' => (string) $schoolYearMeta,
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'description' => (string) $descriptionMeta,
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];
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})
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->filter()
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->sortBy('class_section_name', SORT_NATURAL | SORT_FLAG_CASE)
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->values()
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->all();
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return [
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'classSections' => $classSections,
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'semester' => $currentSemester,
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'school_year' => $currentSchoolYear,
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];
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}
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protected function loadTeacherClasses(?string $schoolYear = null): Collection
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{
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return $this->teacherClassModel
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->newQuery()
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->with([
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'teacher:id,firstname,lastname',
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])
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->when(filled($schoolYear), fn ($q) => $q->where('school_year', $schoolYear))
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->get()
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->map(function ($row) {
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$row->teacher_full_name = trim(
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((string) optional($row->teacher)->firstname) . ' ' .
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((string) optional($row->teacher)->lastname)
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);
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return $row;
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});
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}
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protected function loadStudentClasses(?string $schoolYear = null): Collection
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{
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return $this->studentClassModel
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->newQuery()
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->with([
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'student:id,firstname,lastname,age,gender,registration_grade,photo_consent,tuition_paid,school_id,is_active',
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])
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->whereHas('student', fn ($q) => $q->where('is_active', 1))
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->when(filled($schoolYear), fn ($q) => $q->where('school_year', $schoolYear))
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->get();
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}
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protected function getSectionNamesMap(array $sectionIds): array
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{
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if (empty($sectionIds)) {
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return [];
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}
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return $this->classSectionModel
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->newQuery()
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->whereIn('id', $sectionIds)
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->get()
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->mapWithKeys(function ($section) {
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$name = $section->section_name ?? $section->name ?? '';
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return [(int) $section->id => (string) $name];
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})
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->all();
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}
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protected function getSchoolYears(string $fallbackYear = ''): array
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{
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$years = DB::table('teacher_class')
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->selectRaw('DISTINCT school_year')
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->whereNotNull('school_year')
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->orderByDesc('school_year')
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->pluck('school_year')
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->map(fn ($year) => (string) $year)
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->filter()
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->values()
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->all();
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if (empty($years) && $fallbackYear !== '') {
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$years[] = $fallbackYear;
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}
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return $years;
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}
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protected function firstNonEmpty(array $values): mixed
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{
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foreach ($values as $value) {
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if (filled($value)) {
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return $value;
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}
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}
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return null;
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}
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}
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