<?php

namespace App\Http\Controllers\Admin\Posts;

use App\Http\Controllers\Controller;
use App\Models\CustomPostType;
use App\Models\Post;
use App\Models\Media;
use App\Services\AccessibilityAnalyzer;
use App\Services\SettingService;
use Illuminate\Support\Facades\Gate;
use Illuminate\View\View;

/**
 * Controller for showing the post edit UI.
 */
class PostEditController extends Controller
{
    /**
     * Show the form for editing the specified post.
     *
     * @param \App\Models\CustomPostType $customPostType
     * @param \App\Models\Post $post
     * @param \App\Services\AccessibilityAnalyzer $analyzer
     * @param \App\Services\SettingService $settingService
     * @return \Illuminate\View\View
     */
    public function __invoke(CustomPostType $customPostType, Post $post, AccessibilityAnalyzer $analyzer, SettingService $settingService): View
    {
        $content = $post->content ?? [];
        $this->hydrateMedia($content);

        return view('admin.posts.editor', [
            'customPostType' => $customPostType->load('fields'),
            'post' => $post->setAttribute('content', $content),
            'a11yIssues' => $analyzer->analyze($content),
            'availableLocales' => $settingService->getSupportedLocales(),
            'defaultLocale' => $settingService->get('default_locale', config('app.locale')),
            'permissions' => [
                'view-media' => Gate::allows('view-media'),
                'upload-media' => Gate::allows('upload-media'),
                'update-media' => Gate::allows('update-media'),
                'delete-media' => Gate::allows('delete-media'),
            ],
        ]);
    }

    /**
     * Recursively hydrate media blocks with filenames if only media_id is present.
     */
    protected function hydrateMedia(array &$content): void
    {
        foreach ($content as $locale => &$blocks) {
            if (is_array($blocks)) {
                foreach ($blocks as &$block) {
                    if (($block['type'] ?? '') === 'media' && !empty($block['data']['media_id']) && empty($block['data']['filename'])) {
                        $media = Media::find($block['data']['media_id']);
                        if ($media) {
                            $block['data']['filename'] = $media->filename;
                        }
                    }
                }
            }
        }
    }
}