<?php

namespace App\Filament\Pages;

use App\Models\AcademicYear;
use App\Models\Assessment;
use App\Models\ClassRoom;
use App\Models\ClassStudent;
use App\Models\ClassSubject;
use App\Models\Student;
use App\Models\Subject;
use App\Models\TeacherSubject;
use Filament\Forms\Components\Select;
use Filament\Forms\Form;
use Filament\Pages\Page;

class StudentReport extends Page
{

    protected static ?string $navigationIcon = 'heroicon-o-document-text';

    protected static string $view = 'filament.pages.student-report';

    protected static ?string $navigationGroup = 'Academic Management';

    public $class_id;
    public $academic_year;
    public $semester;
    public ?array $data;

    public $list;

    public static function canAccess(): bool
    {
        return auth()->user()->hasAnyRole(['super_admin']);
    }

    public static function shouldRegisterNavigation(): bool
    {
        return auth()->user()->hasAnyRole(['super_admin']);
    }

    public function mount(): void
    {
        $this->class = null;
        $this->academicYear = null;
        $this->semester = null;
        $this->data = [];
    }

    public function form(Form $form): Form
    {
        return $form->schema([
            Select::make('class_id')
                ->label('Class')
                ->required()
                ->options(ClassRoom::pluck('class_name', 'id')->toArray())
                ->searchable()
                ->reactive()
                ->afterStateUpdated(function ($state) {
                    $this->class_id = $state;
                    $this->data['class_id'] = $state; // Update data array
                    $this->loadData();
                }),

            Select::make('academic_year')
                ->label('Academic Year')
                ->required()
                ->options(AcademicYear::pluck('name', 'id')->toArray())
                ->searchable()
                ->reactive()
                ->afterStateUpdated(function ($state) {
                    $this->academic_year = $state;
                    $this->data['academic_year'] = $state; // Update data array
                    $this->loadData();
                }),

            Select::make('semester')
                ->label('Semester')
                ->required()
                ->options([
                    'first' => 'First Semester',
                    'second' => 'Second Semester'
                ])
                ->reactive()
                ->afterStateUpdated(function ($state) {
                    $this->semester = $state;
                    $this->data['semester'] = $state;
                    $this->loadData();
                }),
        ])->columns(3);
    }

    protected function loadData(): void
    {
        if (count($this->data) < 3) {
            $this->list = [];
            return;
        }

        $groupedAssessment = [];

        $assessments = Assessment::where('semester', $this->semester)
            ->whereHas('teacherSubject', function($query) {
                $query->where('academic_year_id', $this->academic_year)
                    ->where('class_id', $this->class_id);
            })
            ->with('teacherSubject', 'student')
            ->get()
            ->toArray();

        $classSubjects = ClassSubject::with(['subject', 'class', 'academicYear'])
            ->where('class_room_id', $this->class_id)
            ->where('academic_year_id', $this->academic_year)
            ->get()
            ->sortByDesc(function ($item) {
                return $item->subject->name;
            })
            ->toArray();

        $header = [];

        foreach ($classSubjects as $classSubject) {
            $category = strtolower($classSubject['subject']['category']);
            $subjectName = $classSubject['subject']['name'];
            $subjectId = $classSubject['subject']['id'];
            $header[$category][$subjectId] = $subjectName;
        }

        $students = ClassStudent::with(['class', 'academicYear', 'student'])
            ->where('class_room_id', $this->class_id)
            ->where('academic_year_id', $this->academic_year)
            ->get()
            ->map(function($student) {
                return $student['student'];
            })
            ->toArray();

        $finals = [];
        foreach ($students as $student) {
            $studentData = [
                'student_id' => $student['id'],
                'name' => $student['full_name'],
            ];

            foreach ($header as $category => $subjects) {
                foreach ($subjects as $subjectId => $subjectName) {
                    $matchingAssessment = collect($assessments)->first(function ($a) use ($student, $subjectId) {
                        return $a['student_id'] == $student['id'] && $a['teacher_subject']['subject_id'] == $subjectId;
                    });

                    $studentData[$category][$subjectId] = $matchingAssessment['score'] ?? '-'; // atau null
                }
            }

            $finals[] = $studentData;
        }

        $result = [];

        foreach ($finals as $final => $fnl) {
            $existStudent = Student::where('id', $fnl['student_id'])->firstOrFail();

            $studentData = [
                'name' => $fnl['name'],
            ];

            $mapel = $fnl['umum'] ?? null;

            if ($mapel) {
                foreach ($mapel as $key => $value) {
                    $existSubject = Subject::where('id', $key)->firstOrFail();

                    if ($existSubject->is_religious) {
                        $studentReligion = strtolower($existStudent->religion); // contoh: "islam"
                        $subjectName = strtolower($existSubject->name);        // contoh: "pendidikan agama islam"

                        if (str_contains($subjectName, $studentReligion)) {
                            // Hanya mapel agama yang sesuai dengan agama siswa dimasukkan ke umum[0]
                            $studentData['umum'][0] = $value;
                        }
                        // Mapel agama lain tidak dimasukkan sama sekali
                    } else {
                        $studentData['umum'][$key] = $value;
                    }
                }
            }

            $studentData['muatan lokal'] = $fnl['muatan lokal'] ?? null;

            $result[] = $studentData;
        }

        $groupedAssessment["data"] = $result;

        $groupedSubjectsHeader = [];

        $groupedSubjectsHeader['name'] = "Nama";

        $religionAdded = false;

        foreach ($classSubjects as $classSubject) {
            $category = strtolower($classSubject['subject']['category']);
            $subjectName = $classSubject['subject']['name'];
            $isReligion = $classSubject['subject']['is_religious'];
            $subjectId = $classSubject['subject']['id'];

            if ($isReligion) {
                if (!$religionAdded) {
                    $groupedSubjectsHeader['umum'][0] = 'Pendidikan Agama';
                    $religionAdded = true;
                }
                continue;
            }

            $groupedSubjectsHeader[$category][$subjectId] = $subjectName;
        }

        $groupedAssessment["header"] = $groupedSubjectsHeader;

        $this->list = $groupedAssessment;
    }
}