Fix rich editor image preview URLs

tests/Unit/GuidePageContentTest.php

@@ -0,0 +1,40 @@
+<?php
+
+use App\Models\GuidePage;
+
+it('normalizes uploaded guide image urls for rendering', function () {
+    $page = new GuidePage([
+        'content' => <<<'HTML'
+<figure data-trix-attachment='{"url":"http://localhost:8000/storage/guide-pages/example.png?signature=abc"}'>
+    <img src="http://localhost:8000/storage/guide-pages/example.png?signature=abc">
+</figure>
+HTML,
+    ]);
+
+    expect($page->normalized_content)
+        ->toContain('/storage/guide-pages/example.png?signature=abc')
+        ->not->toContain('http://localhost:8000/storage/guide-pages/example.png?signature=abc');
+});
+
+it('adds a leading slash to relative guide image urls', function () {
+    $page = new GuidePage([
+        'content' => '<img src="storage/guide-pages/example.png">',
+    ]);
+
+    expect($page->normalized_content)
+        ->toBe('<img src="/storage/guide-pages/example.png">');
+});
+
+it('keeps external image urls unchanged', function () {
+    $page = new GuidePage([
+        'content' => '<img src="https://example.com/images/example.png">',
+    ]);
+
+    expect($page->normalized_content)
+        ->toBe('<img src="https://example.com/images/example.png">');
+});
+
+it('builds root relative upload urls for new attachments', function () {
+    expect(GuidePage::uploadedAttachmentUrl('guide-pages/example.png'))
+        ->toBe('/storage/guide-pages/example.png');
+});