Implement consistent HTML preservation modifier

Author: tabuna

app/View/Components/Docs/Content.php

@@ -5,6 +5,7 @@
 use App\View\Modifications\BladeComponentModifier;
 use App\View\Modifications\BlockquoteColorModifier;
 use App\View\Modifications\HeaderLinksModifier;
+use App\View\Modifications\HTMLCleanseModifier;
 use App\View\Modifications\ImageAltModifier;
 use App\View\Modifications\RemoveFirstHeaderModifier;
 use App\View\Modifications\ResponsiveTableModifier;
@@ -50,13 +51,10 @@ public function render()
     public function toHtml(): string
     {
         return Cache::remember('doc-content-'.sha1($this->content), now()->addWeek(), function () {
-            $crawler = new Crawler();
-            $crawler->addHtmlContent(mb_convert_encoding($this->content, 'UTF-8'));
-            $content = $crawler->filterXpath('//body')->first()->html();
-
             return app(Pipeline::class)
-                ->send($content)
+                ->send($this->content)
                 ->through([
+                    HTMLCleanseModifier::class, // Стандартизирует HTML
                     BlockquoteColorModifier::class, // Применяет цвет к блокам цитат (Например предупреждение)
                     RemoveFirstHeaderModifier::class, // Удаляет h1 заголовок
                     HeaderLinksModifier::class, // Добавляет ссылки для заголовков

app/View/Components/Posts/Content.php

@@ -4,6 +4,7 @@
 
 use App\View\Modifications\BladeComponentModifier;
 use App\View\Modifications\BlockquoteColorModifier;
+use App\View\Modifications\HTMLCleanseModifier;
 use App\View\Modifications\ImageAltModifier;
 use App\View\Modifications\ResponsiveTableModifier;
 use App\View\Modifications\TypografModifier;
@@ -57,6 +58,7 @@ public function toHtml(): string
             return app(Pipeline::class)
                 ->send($content)
                 ->through([
+                    HTMLCleanseModifier::class, // Стандартизирует HTML
                     BlockquoteColorModifier::class, // Применяет цвет к блокам цитат (Например предупреждение)
                     ResponsiveTableModifier::class, // Добавляет к таблице класс table-responsive
                     BladeComponentModifier::class, // Применяет компоненты blade

app/View/Modifications/BlockquoteColorModifier.php

@@ -44,7 +44,7 @@ public function handle(string $content, \Closure $next)
                         $html = Str::of($tag)
                             ->replace('<blockquote>', '<blockquote class="'.$class.'"><div>')
                             ->replace('</blockquote>', '</div></blockquote>')
-                            ->replace($fragment, '');
+                            ->remove($fragment);
                     });
 
                 $content = Str::of($content)->replace($tag, $html);

app/View/Modifications/HTMLCleanseModifier.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\View\Modifications;
+
+use Symfony\Component\DomCrawler\Crawler;
+
+class HTMLCleanseModifier extends HTMLModifier
+{
+    /**
+     * @param string   $content The HTML content to be modified.
+     * @param \Closure $next    The next method in the middleware pipeline.
+     *
+     * @return mixed The modified HTML content.
+     */
+    public function handle(string $content, \Closure $next)
+    {
+        $crawler = new Crawler();
+        $crawler->addHtmlContent(mb_convert_encoding($content, 'UTF-8'));
+        $content = $crawler->filterXpath('//body')->first()->html();
+
+        return $next($content);
+    }
+}