<?php

declare(strict_types=1);

namespace App\Filament\Resources\Posts\Schemas;

use App\Blog\Support\MarkdownMediaEmbed;
use Filament\Actions\Action;
use Filament\Forms\Components\DateTimePicker;
use Filament\Forms\Components\MarkdownEditor;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Components\Textarea;
use Filament\Forms\Components\Toggle;
use Filament\Notifications\Notification;
use Filament\Schemas\Components\Actions;
use Filament\Schemas\Components\Utilities\Get;
use Filament\Schemas\Components\Utilities\Set;
use Filament\Schemas\Schema;
use Xpier\FilamentMediaLibrary\Components\MediaPicker;
use Xpier\FilamentMediaLibrary\Models\MediaLibrary;

class PostForm
{
    public static function configure(Schema $schema): Schema
    {
        return $schema
            ->components([
                \Filament\Schemas\Components\Section::make('内容')
                    ->columns(2)
                    ->schema([
                        TextInput::make('title')
                            ->label('标题')
                            ->required()
                            ->columnSpanFull(),
                        TextInput::make('slug')
                            ->label('Slug（留空自动生成）'),
                        Select::make('category_id')
                            ->label('分类')
                            ->relationship('category', 'name'),
                        Select::make('content_format')
                            ->label('内容格式')
                            ->options([
                                'markdown' => 'Markdown',
                                'html' => 'HTML',
                            ])
                            ->default('markdown')
                            ->live(),
                        Select::make('status')
                            ->label('状态')
                            ->options([
                                'published' => '已发布',
                                'draft' => '草稿',
                                'private' => '私密',
                            ])
                            ->default('published'),
                        MarkdownEditor::make('content')
                            ->label('正文')
                            ->required()
                            ->helperText('Markdown 插入图片用 ![说明](media:ID)，文件用 [文件名](media:ID)。不要把 CDN / 对象存储地址写进正文。')
                            ->fileAttachments(false)
                            ->columnSpanFull(),
                        MediaPicker::make('insert_media_id')
                            ->label('从媒体库插入正文')
                            ->module('articles')
                            ->mediaType(null)
                            ->dehydrated(false)
                            ->helperText('选好媒体后点「插入到正文」。Markdown 写入 media:ID 引用，渲染时再换成真实地址。')
                            ->columnSpanFull(),
                        Actions::make([
                            Action::make('insertSelectedMedia')
                                ->label('插入到正文')
                                ->action(function (Get $get, Set $set): void {
                                    $mediaId = $get('insert_media_id');
                                    $media = is_numeric($mediaId)
                                        ? MediaLibrary::query()->find((int) $mediaId)
                                        : null;

                                    if (! $media instanceof MediaLibrary) {
                                        Notification::make()->title('请先从媒体库选择文件')->warning()->send();

                                        return;
                                    }

                                    $snippet = app(MarkdownMediaEmbed::class)->snippet(
                                        $media,
                                        (string) ($get('content_format') ?: 'markdown')
                                    );
                                    $set('content', rtrim((string) $get('content'))."\n\n".$snippet."\n");
                                    $set('insert_media_id', null);
                                    Notification::make()->title('已写入正文引用')->success()->send();
                                }),
                        ])->columnSpanFull(),
                    ]),
                \Filament\Schemas\Components\Section::make('封面与摘要')
                    ->columns(2)
                    ->schema([
                        MediaPicker::make('cover_media_id')
                            ->label('封面图')
                            ->module('articles')
                            ->mediaType('image')
                            ->relationship('coverMedia')
                            ->columnSpanFull(),
                        Textarea::make('excerpt')
                            ->label('摘要（留空自动截取）')
                            ->rows(3),
                        TextInput::make('keywords')
                            ->label('关键词（逗号分隔）'),
                    ]),
                \Filament\Schemas\Components\Section::make('发布设置')
                    ->columns(3)
                    ->schema([
                        DateTimePicker::make('published_at')
                            ->label('发布时间')
                            ->default(now()),
                        Toggle::make('is_sticky')
                            ->label('置顶'),
                        Toggle::make('close_comment')
                            ->label('关闭评论'),
                        TextInput::make('read_password')
                            ->label('阅读密码（留空公开）'),
                        TextInput::make('views')
                            ->label('浏览量')
                            ->numeric()
                            ->disabled(),
                        TextInput::make('comment_count')
                            ->label('评论数')
                            ->numeric()
                            ->disabled(),
                    ]),
            ]);
    }
}