Refactor

src/Support/HtmlCleaner.php

@@ -0,0 +1,107 @@
+<?php
+
+namespace Mattitja\Cision\Support;
+
+use DOMNode;
+use DOMText;
+use DOMElement;
+
+class HtmlCleaner
+{
+    /**
+     * Render a DOM node into safe HTML, preserving allowed block and inline tags.
+     */
+    public static function renderNode(DOMNode $node, array $allowedTags, array $allowedInline, string $parentTag = ''): ?string
+    {
+        if ($node instanceof DOMText) {
+            return $node->wholeText;
+        }
+
+        if (!($node instanceof DOMElement)) {
+            return null;
+        }
+
+        $tag = $node->nodeName;
+
+        // Special case: handle <br> within <p>
+        if ($tag === 'br') {
+            if ($parentTag === 'p') {
+                $prev = $node->previousSibling;
+                $next = $node->nextSibling;
+
+                $hasTextBefore = $prev instanceof DOMText && trim($prev->textContent) !== '';
+                $hasTextAfter = $next instanceof DOMText && trim($next->textContent) !== '';
+
+                if ($hasTextBefore && $hasTextAfter) {
+                    return '<br>';
+                }
+            }
+
+            // Skip all other <br>
+            return null;
+        }
+
+        // Recursively render children
+        $inner = '';
+        foreach ($node->childNodes as $child) {
+            $rendered = self::renderNode($child, $allowedTags, $allowedInline, $tag);
+            if ($rendered !== null) {
+                $inner .= $rendered;
+            }
+        }
+
+        // Handle block tags
+        if (in_array($tag, $allowedTags)) {
+            if ($tag === 'p') {
+                $html = $node->C14N();
+                $isItalic = str_starts_with(trim($html), '<em') || str_starts_with(trim($html), '<i');
+                $class = $isItalic ? ' class="italic"' : '';
+                return "<p{$class}>" . trim($inner) . "</p>";
+            }
+
+            return "<{$tag}>" . trim($inner) . "</{$tag}>";
+        }
+
+        // Handle inline tags
+        if (in_array($tag, $allowedInline)) {
+            return "<{$tag}>{$inner}</{$tag}>";
+        }
+
+        // Unknown tags are ignored but their content is preserved
+        return $inner;
+    }
+
+    /**
+     * Clean a raw HTML string: remove unwanted tags, empty elements, garbage phrases, and excessive whitespace.
+     */
+    public static function clean(string $html): string
+    {
+        // Remove first <h1>
+        $html = preg_replace('/<h1\b[^>]*>.*?<\/h1>/i', '', $html, 1);
+
+        // Remove empty tags like <i></i>, <span></span>
+        $html = preg_replace('/<(\w+)[^>]*>\s*<\/\1>/', '', $html);
+
+        // Remove specific garbage strings
+        $unwantedStrings = [
+            'Report this content',
+            '<p><strong>Taggar:</strong></p>',
+        ];
+
+        foreach ($unwantedStrings as $str) {
+            $html = str_replace($str, '', $html);
+        }
+
+        // Remove localized date lines like: fre, jul 04, 2025 09:55 CET
+        $html = preg_replace('/\b[a-z]{3},\s[a-z]{3}\s\d{2},\s\d{4}\s\d{2}:\d{2}\sCET\b/i', '', $html);
+
+        // Normalize whitespace
+        $html = str_replace(["\u{A0}", "\t", "\r"], ' ', $html);          // Remove non-breaking spaces and tabs
+        $html = preg_replace('/[ ]{2,}/', ' ', $html);                    // Collapse double spaces
+        $html = preg_replace("/(\n\s*){2,}/", "\n", $html);               // Collapse multiple newlines
+        $html = str_replace(['  ', ' \n'], '', $html);                    // Additional spacing clean
+        $html = trim($html);
+
+        return $html;
+    }
+}