<?php

namespace App\Filament\Resources;

use App\Filament\Resources\TeacherSubjectResource\Pages;
use App\Models\ClassRoom;
use App\Models\Subject;
use App\Models\TeacherSubject;
use App\Models\User;
use Closure;
use Filament\Forms;
use Filament\Forms\Form;
use Filament\Resources\Resource;
use Filament\Tables;
use Filament\Tables\Table;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Support\Str;

class TeacherSubjectResource extends Resource
{
    protected static ?string $model = TeacherSubject::class;

    protected static ?string $navigationIcon = 'heroicon-o-academic-cap';
    protected static ?string $navigationGroup = 'Academic Management';

    public static function form(Form $form): Form
    {
        return $form
            ->schema([
                Forms\Components\Section::make('Teacher Subject Assignment')
                    ->schema([
                        Forms\Components\Select::make('teacher_id')
                            ->label('Teacher')
                            ->required()
                            ->options(User::role('teacher')->pluck('name', 'id')->toArray())
                            ->searchable()
                            ->native(false),

                        Forms\Components\Select::make('subject_id')
                            ->label('Subject')
                            ->required()
                            ->options(Subject::pluck('name', 'id')->toArray())
                            ->searchable()
                            ->native(false),

                        Forms\Components\Select::make('class_id')
                            ->label('Class')
                            ->required()
                            ->options(ClassRoom::pluck('class_name', 'id')->toArray())
                            ->searchable()
                            ->native(false),

                        Forms\Components\TextInput::make('academic_year')
                            ->label('Academic Year')
                            ->required()
                            ->placeholder('e.g. 2023/2024')
                            ->maxLength(9),

                    ])
                    ->columns(2),
            ]);
    }

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

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

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

                Tables\Columns\TextColumn::make('academic_year')
                    ->label('Academic Year')
                    ->searchable()
                    ->sortable(),

                Tables\Columns\TextColumn::make('created_at')
                    ->label('Assigned At')
                    ->dateTime()
                    ->sortable()
                    ->toggleable(isToggledHiddenByDefault: true),
            ])
            ->filters([
                Tables\Filters\SelectFilter::make('teacher_id')
                    ->label('Teacher')
                    ->relationship('teacher', 'name')
                    ->searchable()
                    ->preload(),

                Tables\Filters\SelectFilter::make('subject_id')
                    ->label('Subject')
                    ->relationship('subject', 'name')
                    ->searchable()
                    ->preload(),

                Tables\Filters\SelectFilter::make('class_id')
                    ->label('Class')
                    ->relationship('class', 'class_name')
                    ->searchable()
                    ->preload(),

            ])
            ->actions([
                Tables\Actions\EditAction::make(),
                Tables\Actions\DeleteAction::make(),
            ])
            ->bulkActions([
                Tables\Actions\BulkActionGroup::make([
                    Tables\Actions\DeleteBulkAction::make(),
                ]),
            ])
            ->emptyStateActions([
                Tables\Actions\CreateAction::make(),
            ]);
    }

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

    public static function getPages(): array
    {
        return [
            'index' => Pages\ListTeacherSubjects::route('/'),
            'create' => Pages\CreateTeacherSubject::route('/create'),
            'edit' => Pages\EditTeacherSubject::route('/{record}/edit'),
        ];
    }
}