move to custom API route for better compatiblity

composer.json

@@ -2,7 +2,7 @@
   "name": "tobimori/kirby-seo",
   "description": "The ultimate Kirby SEO toolkit",
   "type": "kirby-plugin",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "license": "MIT",
   "homepage": "https://github.com/tobimori/kirby-seo#readme",
   "authors": [

config/api.php

@@ -0,0 +1,91 @@
+<?php
+
+use Kirby\Cms\App;
+use Kirby\Cms\Page;
+use Kirby\Cms\Site;
+use Kirby\Form\Form;
+use Kirby\Toolkit\Str;
+
+return [
+  'data' => [
+    'dirtyPageOrSite' => function (string $slug) {
+      $kirby = kirby();
+      $page = $slug == 'site' ? $kirby->site() : $kirby->page(Str::replace($slug, '+', '/'));
+
+      if ($this->requestBody()) {
+        $form = Form::for($page, [ // Form class handles transformation of changed items
+          'ignoreDisabled' => true,
+          'input' => array_merge(['title' => $page->title()], $page->content()->data(), $this->requestBody()),
+          'language' => $kirby->language()->code()
+        ]);
+
+        $page = $page->clone(['content' => $form->data()]);
+      }
+
+      return $page;
+    }
+  ],
+  'routes' =>  [
+    [
+      'pattern' => '/k-seo/(:any)/heading-structure',
+      'method' => 'POST',
+      'action' => function (string $slug) {
+        $model = $this->dirtyPageOrSite($slug);
+
+        if ($model instanceof Page) {
+          $page = $model->render();
+          $dom = new DOMDocument();
+          $dom->loadHTML(htmlspecialchars_decode(iconv('UTF-8', 'ISO-8859-1', htmlentities($page, ENT_COMPAT, 'UTF-8')), ENT_QUOTES), libxml_use_internal_errors(true));
+
+          $xpath = new DOMXPath($dom);
+          $headings = $xpath->query('//h1|//h2|//h3|//h4|//h5|//h6');
+          $data = [];
+
+          foreach ($headings as $heading) {
+            $data[] = [
+              'level' => (int) str_replace('h', '', $heading->nodeName),
+              'text' => $heading->textContent,
+            ];
+          }
+
+          return $data;
+        }
+
+        return null;
+      }
+    ],
+    [
+      'pattern' => '/k-seo/(:any)/seo-preview',
+      'method' => 'POST',
+      'action' => function (string $slug) {
+        $model = $this->dirtyPageOrSite($slug);
+
+        if ($model instanceof Site) {
+          $model = $model->homePage();
+        }
+
+        if ($model instanceof Page) {
+          $meta = $model->metadata();
+
+          $ogImage = $meta->ogImage()->toFile()?->thumb([
+            'width' => 1200,
+            'height' => 630,
+            'crop' => true,
+          ]);
+
+          return [
+            'page' => $model->slug(),
+            'url' => $model->url(),
+            'title' => $meta->title()->value(),
+            'description' => $meta->metaDescription()->value(),
+            'ogTitle' => $meta->ogTitle()->value(),
+            'ogDescription' => $meta->ogDescription()->value(),
+            'ogImage' => $ogImage?->url(),
+          ];
+        }
+
+        return null;
+      }
+    ]
+  ]
+];

config/sections.php

@@ -0,0 +1,10 @@
+<?php
+
+return [
+  'seo-preview' => [
+    'mixins' => ['headline'],
+  ],
+  'heading-structure' => [
+    'mixins' => ['headline']
+  ]
+];