<?php

namespace App\Filament\Blog\Resources;

use App\Filament\Blog\Resources\PostResource\Pages;
use App\Filament\Blog\Traits\HasContentEditor;
use App\Filament\Clusters\RareAdmin\RareAdminCluster;
use App\Models\BlogCategory;
use App\Models\BlogPost;
use Filament\Actions\BulkActionGroup;
use Filament\Actions\DeleteAction;
use Filament\Actions\DeleteBulkAction;
use Filament\Forms\Components\DateTimePicker;
use Filament\Forms\Components\FileUpload;
use Filament\Forms\Components\MarkdownEditor;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\Textarea;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Components\Toggle;
use Filament\Resources\Resource;
use Filament\Schemas\Components\Section;
use Filament\Schemas\Components\Tabs as SchemaTabs;
use Filament\Schemas\Components\Tabs\Tab as SchemaTab;
use Filament\Schemas\Components\Utilities\Get;
use Filament\Schemas\Components\Utilities\Set;
use Filament\Schemas\Schema;
use Filament\Tables\Columns\IconColumn;
use Filament\Tables\Columns\TextColumn;
use Filament\Tables\Filters\TernaryFilter;
use Filament\Tables\Table;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\SoftDeletingScope;
use Illuminate\Support\Str;

class PostResource extends Resource
{
    use HasContentEditor;

    protected static ?string $model = BlogPost::class;

    protected static ?string $cluster = RareAdminCluster::class;

    protected static string|\BackedEnum|null $navigationIcon = 'heroicon-o-document-text';

    protected static ?string $navigationLabel = 'Beiträge';

    protected static ?string $pluralLabel = 'Beiträge';

    protected static ?string $modelLabel = 'Beitrag';

    public static function getNavigationGroup(): string
    {
        return __('admin.nav.content');
    }

    public static function form(Schema $schema): Schema
    {
        return $schema
            ->schema([
                SchemaTabs::make('Übersetzungen')
                    ->tabs([
                        SchemaTab::make('Deutsch')
                            ->schema([
                                TextInput::make('title.de')
                                    ->label('Titel')
                                    ->required()
                                    ->maxLength(255)
                                    ->live()
                                    ->afterStateUpdated(function (Get $get, Set $set, ?string $old, ?string $state) {
                                        if (($get('slug') ?? '') !== Str::slug($state)) {
                                            return;
                                        }

                                        $set('slug', Str::slug($state));
                                    }),
                                MarkdownEditor::make('content.de')
                                    ->label('Inhalt')
                                    ->required()
                                    ->columnSpanFull(),
                                TextInput::make('excerpt.de')
                                    ->label('Auszug')
                                    ->maxLength(255),
                                TextInput::make('meta_title.de')
                                    ->label('Meta-Titel')
                                    ->maxLength(255),
                                Textarea::make('meta_description.de')
                                    ->label('Meta-Beschreibung')
                                    ->maxLength(65535)
                                    ->columnSpanFull(),
                            ])
                            ->columns(2),
                        SchemaTab::make('Englisch')
                            ->schema([
                                TextInput::make('title.en')
                                    ->label('Titel')
                                    ->maxLength(255),
                                MarkdownEditor::make('content.en')
                                    ->label('Inhalt')
                                    ->columnSpanFull(),
                                TextInput::make('excerpt.en')
                                    ->label('Auszug')
                                    ->maxLength(255),
                                TextInput::make('meta_title.en')
                                    ->label('Meta-Titel')
                                    ->maxLength(255),
                                Textarea::make('meta_description.en')
                                    ->label('Meta-Beschreibung')
                                    ->maxLength(65535)
                                    ->columnSpanFull(),
                            ])
                            ->columns(2),
                    ])
                    ->columnSpanFull(),
                Section::make('Bild und Kategorie')
                    ->schema([
                        TextInput::make('slug')
                            ->label('Slug')
                            ->required()
                            ->unique(BlogPost::class, 'slug', ignoreRecord: true)
                            ->maxLength(255)
                            ->columnSpanFull(),
                        FileUpload::make('featured_image')
                            ->label('Featured Image')
                            ->image()
                            ->directory('blog')
                            ->visibility('public'),
                        Select::make('blog_category_id')
                            ->label('Kategorie')
                            ->options(fn () => BlogCategory::query()
                                ->orderBy('slug')
                                ->get()
                                ->mapWithKeys(fn (BlogCategory $category) => [
                                    $category->getKey() => $category->name['de'] ?? $category->name['en'] ?? $category->slug,
                                ])->toArray())
                            ->searchable()
                            ->required()
                            ->preload()
                            ->createOptionForm([
                                TextInput::make('name_de')
                                    ->label('Name (DE)')
                                    ->required()
                                    ->maxLength(255)
                                    ->afterStateUpdated(fn (Set $set, $state) => $set('name_en', $state)),
                                TextInput::make('name_en')
                                    ->label('Name (EN)')
                                    ->maxLength(255),
                                TextInput::make('slug')
                                    ->label('Slug')
                                    ->required()
                                    ->unique(\App\Models\BlogCategory::class, 'slug', ignoreRecord: true)
                                    ->maxLength(255),
                            ])
                            ->createOptionUsing(function (array $data) {
                                $nameDe = $data['name_de'] ?? null;
                                $nameEn = $data['name_en'] ?? null;

                                $category = BlogCategory::create([
                                    'slug' => $data['slug'],
                                    'is_visible' => true,
                                    'name' => [
                                        'de' => $nameDe ?: ($nameEn ?: $data['slug']),
                                        'en' => $nameEn ?: ($nameDe ?: $data['slug']),
                                    ],
                                    'description' => null,
                                ]);

                                return $category->getKey();
                            }),
                    ])
                    ->columns(2),
                Section::make('Veröffentlichung')
                    ->schema([
                        Toggle::make('is_published')
                            ->label('Veröffentlicht'),
                        DateTimePicker::make('published_at')
                            ->label('Veröffentlicht am')
                            ->displayFormat('Y-m-d H:i:s')
                            ->default(now()),
                    ]),
            ]);
    }

    public static function mutateFormDataBeforeCreate(array $data): array
    {
        return $data;
    }

    public static function table(Table $table): Table
    {
        return $table
            ->columns([
                TextColumn::make('title')
                    ->label('Titel (DE)')
                    ->getStateUsing(fn ($record) => $record->getTranslation('title', 'de'))
                    ->searchable()
                    ->limit(50)
                    ->url(fn ($record) => static::getUrl('edit', ['record' => $record]))
                    ->sortable(),
                TextColumn::make('category_label')
                    ->label('Kategorie')
                    ->badge()
                    ->getStateUsing(function ($record) {
                        $raw = $record->category?->name ?? null;

                        if (is_string($raw) && $raw !== '') {
                            $decoded = json_decode($raw, true);
                            if (json_last_error() === JSON_ERROR_NONE && is_array($decoded)) {
                                $raw = $decoded;
                            }
                        }

                        if (is_array($raw)) {
                            return $raw['de'] ?? $raw['en'] ?? '—';
                        }

                        if (is_string($raw) && $raw !== '') {
                            return $raw;
                        }

                        return '—';
                    })
                    ->color('primary'),
                IconColumn::make('is_published')
                    ->label('Veröffentlicht')
                    ->boolean()
                    ->trueIcon('heroicon-o-check-circle')
                    ->falseIcon('heroicon-o-x-circle'),
                TextColumn::make('published_at')
                    ->label('Veröffentlichungsdatum')
                    ->icon('heroicon-o-calendar')
                    ->dateTime('d.m.Y H:i')
                    ->sortable(),
                TextColumn::make('created_at')
                    ->label('Erstellt am')
                    ->dateTime()
                    ->sortable()
                    ->toggleable(isToggledHiddenByDefault: true),
            ])
            ->filters([
                TernaryFilter::make('is_published')
                    ->label('Veröffentlicht'),
            ])
            ->actions([
                DeleteAction::make()
                    ->icon('heroicon-o-trash')
                    ->label(''),
            ])
            ->bulkActions([
                BulkActionGroup::make([
                    DeleteBulkAction::make(),
                ]),
            ]);
    }

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

    public static function getPages(): array
    {
        return [
            'index' => Pages\ListPosts::route('/'),
            'create' => Pages\CreatePost::route('/create'),
            'view' => Pages\ViewPost::route('/{record}'),
            'edit' => Pages\EditPost::route('/{record}/edit'),
        ];
    }

    public static function getEloquentQuery(): Builder
    {
        return parent::getEloquentQuery()
            ->withoutGlobalScopes([
                SoftDeletingScope::class,
            ]);
    }
}