Headless mode url rewrite

README.md

@@ -133,6 +133,8 @@ It works similary to the Antlers tags, so you can use single values as well.
 
 Headless use is straightforward. If using the REST API or GraphQL, the entry will include three Seotamic fields: `seotamic_meta`, `seotamic_social` with the prefilled SEO data.
 
+You can also set the base canonical url in the config file by setting a value for `headless_mode`. The default value is `false`, but setting it to `https://mydomain.com` will change all canonical urls. The images will NOT use this base url, as they are still served from Statamic.
+
 **Headless usage is supported only for the PRO version.**
 
 ## Sitemap (PRO)

config/seotamic.php

@@ -18,6 +18,13 @@
     // Do we want to add a /sitemap.xml to the site?
     'sitemap' => true,
 
+    // If set (ie https://test.domain.com) this base url will replace the
+    // app url for canonical and social url tags. Image links will still
+    // be linked to the CMS domain.
+    //
+    // Defautl value: false
+    'headless_mode' => false,
+
     // Default recommended field lengths.
     // They are just guidelines and can be ignored on the frontend
     'meta_title_length' => 60,

src/FieldTypes/SeotamicMeta.php

@@ -40,7 +40,6 @@ public function preload()
                 'label_custom' => __('seotamic::seo.meta_label_custom'),
                 'label_empty' => __('seotamic::seo.meta_label_empty'),
                 'preview_title' => __('seotamic::seo.meta_preview_title'),
-
             ]
         ];
     }
@@ -101,28 +100,34 @@ protected function getCanonical(): string
             return "";
         }
 
-        $url = $this->field->parent()->permalink;
+        $uri = $this->field->parent()->uri;
+        $config = config('seotamic');
+        $base_url = env('APP_URL');
+
+        if (isset($config['headless_mode']) && $config['headless_mode'] !== false) {
+            $base_url = $config['headless_mode'];
+        }
+
+        // remove trailing slash from base url
+        if (substr($base_url, -1) === '/') {
+            $base_url = substr($base_url, 0, -1);
+        }
 
         // First child option can return 404 if there is no first child
         if ($this->field->parent()->value('seotamic_canonical') !== null) {
             $url = $this->field->parent()->value('seotamic_canonical');
 
             // We have to make sure the given url is formatted correctly
             // If it's a relative path it must have a / prepended
-            // And we expect the .env APP_URL doesn't
             if (substr($url, 0, 4) !== 'http') {
-                $appUrl = env('APP_URL');
-
-                if (substr($appUrl, -1) === '/') {
-                    $appUrl = substr($appUrl, 0, -1);
-                }
-
                 if (substr($url, 0, 1) !== '/') {
                     $url = '/' . $url;
                 }
 
-                $url = $appUrl . $url;
+                $url = $base_url . $url;
             }
+        } else {
+            $url = $base_url . $uri;
         }
 
         return $url ?? "";

src/Http/Controllers/SettingsController.php

@@ -171,13 +171,6 @@ protected function formBlueprint()
                         'display' => __('seotamic::general.settings_preview_domain_title'),
                         'instructions' => __('seotamic::general.settings_preview_domain_instructions'),
                     ],
-                    'headless_mode' => [
-                        'type' => 'text',
-                        'character_limit' => '50',
-                        'prepend' => 'https://',
-                        'display' => "Headless Mode",
-                        'instructions' => "If set this domain will replace the domain for canonical and social url tags. Image links will still be linked to the CMS domain.",
-                    ],
                     'robots_none' => [
                         'type' => 'toggle',
                         'display' => __('seotamic::general.settings_robots_title'),