M4: 插件框架（钩子系统/ZIP安装/市场客户端）+ blog-seo 插件（JSON-LD/OG/llms.txt/Markdown导出）+ 后台插件/主题管理页

2026-08-11 18:15:56 +08:00
parent dee0208f1d
commit f77c96d3aa
18 changed files with 994 additions and 10 deletions
@@ -0,0 +1,114 @@
+<?php
+
+namespace Plugins\Neatstudio\BlogSeo\Http\Middleware;
+
+use App\Models\Post;
+use Closure;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Cache;
+use Illuminate\Support\Facades\Route;
+use Illuminate\Support\Str;
+use Symfony\Component\HttpFoundation\Response;
+
+/**
+ * SEO 增强中间件：注入 JSON-LD 结构化数据与 OG 标签。
+ * 主题无关：直接改写响应 HTML 的 </head>。
+ */
+class SeoMiddleware
+{
+    public function handle(Request $request, Closure $next): Response
+    {
+        $response = $next($request);
+
+        if (! $this->shouldEnhance($response)) {
+            return $response;
+        }
+
+        $content = $response->getContent();
+        $data = $this->structuredData($request);
+
+        if (empty($data)) {
+            return $response;
+        }
+
+        $jsonLd = '<script type="application/ld+json">'.json_encode($data, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES).'</script>';
+        $og = $this->ogTags($request, $data);
+
+        $content = preg_replace('/<\/head>/', $jsonLd."\n".$og."\n</head>", $content, 1);
+
+        $response->setContent($content);
+
+        return $response;
+    }
+
+    private function shouldEnhance(Response $response): bool
+    {
+        $contentType = $response->headers->get('Content-Type', '');
+
+        // 跳过后台与静态资源
+        if (str_starts_with(request()->path(), 'admin')) {
+            return false;
+        }
+
+        return $response->getStatusCode() === 200
+            && str_contains($contentType, 'text/html');
+    }
+
+    private function structuredData(Request $request): array
+    {
+        $siteName = blog_setting('site_name', config('blog.name'));
+
+        $route = $request->route();
+
+        if ($route && $route->getName() === 'posts.show') {
+            $slug = $route->parameter('slug');
+            $post = Cache::remember('seo.post.'.$slug, now()->addHour(), function () use ($slug) {
+                return Post::query()->where('slug', $slug)->first();
+            });
+
+            if ($post && $post->status === 'published') {
+                return [
+                    '@context' => 'https://schema.org',
+                    '@type' => 'BlogPosting',
+                    'headline' => $post->title,
+                    'url' => route('posts.show', $post->slug ?: $post->id),
+                    'datePublished' => $post->published_at?->toIso8601String(),
+                    'dateModified' => $post->updated_at?->toIso8601String(),
+                    'author' => ['@type' => 'Person', 'name' => $post->author?->name ?? $siteName],
+                    'publisher' => ['@type' => 'Organization', 'name' => $siteName],
+                    'description' => Str::limit(strip_tags($post->excerpt_or_fallback), 200),
+                    'mainEntityOfPage' => route('posts.show', $post->slug ?: $post->id),
+                ];
+            }
+        }
+
+        return [
+            '@context' => 'https://schema.org',
+            '@type' => 'WebSite',
+            'name' => $siteName,
+            'url' => url('/'),
+        ];
+    }
+
+    private function ogTags(Request $request, array $data): string
+    {
+        $siteName = blog_setting('site_name', config('blog.name'));
+        $isArticle = ($data['@type'] ?? '') === 'BlogPosting';
+
+        $tags = [
+            '<meta property="og:site_name" content="'.e($siteName).'">',
+            '<meta property="og:type" content="'.($isArticle ? 'article' : 'website').'">',
+            '<meta property="og:title" content="'.e($data['headline'] ?? $siteName).'">',
+            '<meta property="og:url" content="'.e(url()->current()).'">',
+            '<meta property="og:description" content="'.e($data['description'] ?? blog_setting('site_description', '')).'">',
+            '<meta name="twitter:card" content="summary_large_image">',
+            '<meta name="twitter:title" content="'.e($data['headline'] ?? $siteName).'">',
+        ];
+
+        if ($isArticle) {
+            $tags[] = '<meta property="article:published_time" content="'.e($data['datePublished'] ?? '').'">';
+        }
+
+        return implode("\n", $tags);
+    }
+}