<?php

namespace App\Filament\Resources\Posts\Schemas;

use App\Enums\PostStatus;
use App\Models\Post;
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\Schemas\Components\Section;
use Filament\Schemas\Schema;
use Illuminate\Support\Str;

class PostForm
{
    public static function configure(Schema $schema): Schema
    {
        return $schema
            ->columns(3)
            ->components([
                Section::make('Content')
                    ->columnSpan(2)
                    ->components([
                        TextInput::make('title')
                            ->required()
                            ->live(onBlur: true)
                            ->afterStateUpdated(function (string $operation, $state, callable $set) {
                                if ($operation === 'create') {
                                    $set('slug', Str::slug($state));
                                }
                            }),
                        TextInput::make('slug')
                            ->required()
                            ->unique(Post::class, 'slug', ignoreRecord: true)
                            ->helperText('Used in the URL, e.g. /blog/your-slug'),
                        Textarea::make('excerpt')
                            ->rows(2)
                            ->maxLength(255)
                            ->helperText('Short summary shown in listings. Falls back to the start of the post.'),
                        MarkdownEditor::make('body')
                            ->required()
                            ->columnSpanFull(),
                    ]),
                Section::make('Publishing')
                    ->columnSpan(1)
                    ->components([
                        Select::make('status')
                            ->options(PostStatus::class)
                            ->default(PostStatus::Draft)
                            ->required()
                            ->live(),
                        DateTimePicker::make('published_at')
                            ->default(now())
                            ->helperText('Post is only public once this is in the past.'),
                        Select::make('user_id')
                            ->label('Author')
                            ->relationship('user', 'name')
                            ->searchable()
                            ->preload()
                            ->required(),
                        Select::make('category_id')
                            ->label('Category')
                            ->relationship('category', 'name')
                            ->searchable()
                            ->preload(),
                        Select::make('tags')
                            ->relationship('tags', 'name')
                            ->multiple()
                            ->searchable()
                            ->preload()
                            ->createOptionForm([
                                TextInput::make('name')->required(),
                            ]),
                        FileUpload::make('featured_image')
                            ->image()
                            ->disk('public')
                            ->directory('posts')
                            ->imageEditor(),
                    ]),
                Section::make('SEO')
                    ->description('Optional overrides for search engines and social sharing.')
                    ->columnSpan(3)
                    ->columns(2)
                    ->collapsible()
                    ->components([
                        TextInput::make('meta_title')
                            ->maxLength(60)
                            ->helperText('Falls back to the post title if left blank.'),
                        TextInput::make('meta_description')
                            ->maxLength(160)
                            ->helperText('Falls back to the excerpt if left blank.'),
                    ]),
            ]);
    }
}