<?php

namespace App\Filament\Resources;

use App\Filament\Resources\AttendancesResource\Pages;
use App\Models\Attendances;
use App\Models\ClassRoom;
use App\Models\ClassStudent;
use App\Models\HomeRoomTeacher;
use App\Models\Student;
use App\Models\Subject;
use App\Models\TeacherSubject;
use App\Models\User;
use Filament\Forms;
use Filament\Forms\Components\Select;
use Filament\Forms\Form;
use Filament\Resources\Resource;
use Filament\Tables;
use Filament\Tables\Table;
use Illuminate\Database\Eloquent\Builder;

class AttendancesResource extends Resource
{
    protected static ?string $model = Attendances::class;
    protected static ?string $navigationIcon = 'heroicon-o-clipboard-document-check';
    protected static ?string $navigationGroup = 'Academic Management';

    public static function form(Form $form): Form
    {
        return $form
            ->schema([
                Forms\Components\Section::make('Data Absensi')
                    ->schema([
                        Select::make('teacher_subject_id')
                            ->label('Teacher Subject')
                            ->required()
                            ->options(function () {
                                $user = auth()->user();
                                $query = TeacherSubject::with(['teacher', 'subject', 'class', 'academicYear']);

                                if ($user->hasRole('teacher')) {
                                    // Ambil ID kelas dimana user menjadi wali kelas
                                    $homeRoomClassIds = HomeRoomTeacher::where('teacher_id', $user->id)
                                        ->pluck('class_room_id')
                                        ->toArray();

                                    $query->where(function($q) use ($user, $homeRoomClassIds) {
                                        // Mata pelajaran yang diajarkan oleh guru ini
                                        $q->where('teacher_id', $user->id)
                                            // ATAU kelas dimana dia menjadi wali kelas
                                            ->orWhereIn('class_id', $homeRoomClassIds);
                                    });
                                }

                                return $query->get()->mapWithKeys(fn ($item) => [
                                    $item->id => sprintf('%s - %s - %s - %s',
                                        $item->teacher->name,
                                        $item->subject->name,
                                        $item->class->class_name,
                                        $item->academicYear->name
                                    )
                                ]);
                            })
                            ->searchable()
                            ->live()
                            ->afterStateUpdated(function (callable $set, $state) {
                                if ($state) {
                                    $teacherSubject = TeacherSubject::find($state);
                                    if ($teacherSubject) {
                                        $set('student_id', null);
                                    }
                                }
                            })
                            ->columnSpanFull(),

                        Forms\Components\DatePicker::make('date')
                            ->label('Date')
                            ->required()
                            ->default(now())
                            ->live(),

                        Select::make('student_id')
                            ->label('Student')
                            ->required()
                            ->searchable()
                            ->options(function ($get) {
                                $teacherSubjectId = $get('teacher_subject_id');
                                if ($teacherSubjectId) {
                                    $teacherSubject = TeacherSubject::find($teacherSubjectId);
                                    $students = ClassStudent::where('class_room_id', $teacherSubject->class_id)
                                        ->where('academic_year_id', $teacherSubject->academic_year_id)
                                        ->with('student')
                                        ->get()
                                        ->pluck('student.full_name', 'id')
                                        ->toArray();

                                    return $students;
                                }
                                return [];
                            })
                            ->getOptionLabelUsing(function ($value) {
                                $student = Student::find($value);
                                return $student ? $student->full_name . ' (' . $student->nis . ')' : null;
                            }),

                        Select::make('semester')
                            ->label('Semester')
                            ->required()
                            ->options([
                                'first' => 'First Semester',
                                'second' => 'Second Semester'
                            ]),

                        Select::make('status')
                            ->label('Status')
                            ->required()
                            ->options([
                                'present' => 'Present',
                                'absent' => 'Absent',
                                'permission' => 'Permission',
                                'sick' => 'Sick'
                            ])
                            ->native(false),

                        Forms\Components\Hidden::make('recorded_by')
                            ->default(auth()->id()),

                        Forms\Components\Textarea::make('notes')
                            ->label('Notes')
                            ->columnSpanFull()
                    ])->columns(2)
            ]);
    }

    public static function table(Table $table): Table
    {
        return $table
            ->columns([
                Tables\Columns\TextColumn::make('student.full_name')
                    ->label('Student')
                    ->searchable()
                    ->sortable(),

                Tables\Columns\TextColumn::make('teacherSubject.class.class_name')
                    ->label('Class')
                    ->searchable(),

                Tables\Columns\TextColumn::make('teacherSubject.subject.name')
                    ->label('Subject')
                    ->searchable(),

                Tables\Columns\TextColumn::make('teacherSubject.teacher.name')
                    ->label('Teacher')
                    ->searchable(),

                Tables\Columns\TextColumn::make('date')
                    ->label('Date')
                    ->date('d/m/Y')
                    ->sortable(),

                Tables\Columns\BadgeColumn::make('status')
                    ->label('Status')
                    ->formatStateUsing(fn (string $state): string => match ($state) {
                        'present' => 'Present',
                        'absent' => 'Absent',
                        'permission' => 'Permission',
                        'sick' => 'Sick'
                    })
                    ->color(fn (string $state): string => match ($state) {
                        'present' => 'success',
                        'absent' => 'danger',
                        'permission' => 'warning',
                        'sick' => 'warning'
                    }),

                Tables\Columns\TextColumn::make('semester')
                    ->label('Semester')
                    ->formatStateUsing(fn (string $state): string => match ($state) {
                        'first' => 'First Semester',
                        'second' => 'Second Semester'
                    }),

                Tables\Columns\TextColumn::make('teacherSubject.academicYear.name')
                    ->label('Academic Year')
                    ->searchable(),

                Tables\Columns\TextColumn::make('recorder.name')
                    ->label('Record by')
                    ->toggleable(),
            ])
            ->filters([
                Tables\Filters\SelectFilter::make('status')
                    ->label('Status')
                    ->options([
                        'present' => 'Present',
                        'absent' => 'Absent',
                        'permission' => 'Permission',
                        'sick' => 'Sick'
                    ]),

                Tables\Filters\SelectFilter::make('semester')
                    ->label('Semester')
                    ->options([
                        'first' => 'First Semester',
                        'second' => 'Second Semester'
                    ]),

                Tables\Filters\Filter::make('date')
                    ->form([
                        Forms\Components\DatePicker::make('date_from')
                            ->label('From'),
                        Forms\Components\DatePicker::make('date_until')
                            ->label('To'),
                    ])
                    ->query(function (Builder $query, array $data): Builder {
                        return $query
                            ->when(
                                $data['date_from'],
                                fn (Builder $query, $date): Builder => $query->whereDate('date', '>=', $date),
                            )
                            ->when(
                                $data['date_until'],
                                fn (Builder $query, $date): Builder => $query->whereDate('date', '<=', $date),
                            );
                    }),

                Tables\Filters\SelectFilter::make('teacher_subject_id')
                    ->label('Teacher Subject')
                    ->relationship('teacherSubject', 'id')
                    ->searchable()
                    ->getOptionLabelFromRecordUsing(fn (TeacherSubject $record) =>
                        $record->teacher->name . ' - ' . $record->subject->name)
                    ->preload(),
            ])
            ->actions([
                Tables\Actions\EditAction::make()
                    ->iconButton(),
                Tables\Actions\DeleteAction::make()
                    ->iconButton(),
            ])
            ->bulkActions([
                Tables\Actions\BulkActionGroup::make([
                    Tables\Actions\DeleteBulkAction::make()->visible(fn () => auth()->user()->hasRole('super_admin') || auth()->user()->hasRole('teacher')),
                ]),
            ])
            ->defaultSort('date', 'desc')
            ->groups([
                Tables\Grouping\Group::make('date')
                    ->label('Date')
                    ->date()
                    ->collapsible(),
                Tables\Grouping\Group::make('teacherSubject.subject.name')
                    ->label('Subjects')
                    ->collapsible(),
                Tables\Grouping\Group::make('semester')
                    ->label('Semester')
                    ->collapsible(),
            ]);
    }

    public static function getRelations(): array
    {
        return [
            //
        ];
    }

    public static function getPages(): array
    {
        return [
            'index' => Pages\ListAttendances::route('/'),
            'create' => Pages\CreateAttendances::route('/create'),
            'edit' => Pages\EditAttendances::route('/{record}/edit'),
            'multiple' => Pages\MultipleAttendances::route('/multiple'),
        ];
    }
}