Add imgproxy custom source url setting

Author: Tjitse-E

Helper/Data.php

@@ -118,6 +118,9 @@ public function getImgProxyUrl(string $imageUrl, array $params)
                 $path = $prefix . '/' . $path;
             }
             $sourceUrl = 'local:///' . $path;
+        } elseif ($this->customConfig->getImgproxySourceType() === CustomConfig::IMGPROXY_CUSTOM_URL) {
+            $proxyUrl = trim($this->customConfig->getImgproxySourceCustomUrl(), '/');
+            $sourceUrl = $proxyUrl . '/' . $path;
         } else {
             $sourceUrl = $imageUrl;
         }

Model/Config/CustomConfig.php

@@ -25,12 +25,14 @@ class CustomConfig
 
     public const XML_PATH_CATALOG_MEDIA_URL_FORMAT_CUSTOM_IMGPROXY_SOURCE_TYPE = 'web/url/catalog_media_url_format_custom_imgproxy_source_type';
     public const XML_PATH_CATALOG_MEDIA_URL_FORMAT_CUSTOM_IMGPROXY_SOURCE_PREFIX = 'web/url/catalog_media_url_format_custom_imgproxy_source_prefix';
+    public const XML_PATH_CATALOG_MEDIA_URL_FORMAT_CUSTOM_IMGPROXY_SOURCE_CUSTOM_URL = 'web/url/catalog_media_url_format_custom_imgproxy_source_custom_url';
 
     public const TYPE_DEFAULT = 'default';
     public const TYPE_PATTERN = 'pattern';
     public const TYPE_IMGPROXY = 'imgproxy';
 
     public const IMGPROXY_URL = 'url';
+    public const IMGPROXY_CUSTOM_URL = 'custom_url';
     public const IMGPROXY_LOCAL = 'local';
     public const IMGPROXY_S3 = 's3';
 
@@ -108,6 +110,14 @@ public function getImgproxySourcePrefix($storeId = null): string
         ) ?: '';
     }
 
+    public function getImgproxySourceCustomUrl($storeId = null): string
+    {
+        return $this->scopeConfig->getValue(
+            self::XML_PATH_CATALOG_MEDIA_URL_FORMAT_CUSTOM_IMGPROXY_SOURCE_CUSTOM_URL,
+            ScopeInterface::SCOPE_STORE,
+            $storeId
+        ) ?: '';
+    }
 
     public function getImgproxyKey($storeId = null): string
     {

Model/Config/Source/ImgproxySourceType.php

@@ -27,6 +27,10 @@ public function toOptionArray(): array
                 'value' => CustomConfig::IMGPROXY_URL,
                 'label' => __('URL: Proxy the default URL')
             ],
+            [
+                'value' => CustomConfig::IMGPROXY_CUSTOM_URL,
+                'label' => __('Custom URL: Proxy an url other than the default URL')
+            ],
             [
                 'value' => CustomConfig::IMGPROXY_LOCAL,
                 'label' => __('Local: Pass the local path')

Plugin/AssetImagePlugin.php

@@ -7,7 +7,7 @@
 
 class AssetImagePlugin
 {
-    /** @var $helper */
+    /** @var Data $helper */
     private $helper;
 
     public function __construct(Data $helper)

etc/adminhtml/system.xml

@@ -66,6 +66,14 @@
                     </depends>
                     <comment><![CDATA[For s3, provide both the bucket and optional prefix.]]></comment>
                 </field>
+                <field id="catalog_media_url_format_custom_imgproxy_source_custom_url" translate="label comment" type="text" sortOrder="30" showInDefault="1" showInWebsite="1" showInStore="1" canRestore="0">
+                    <label>Imgproxy Source Custom URL</label>
+                    <depends>
+                        <field id="catalog_media_url_format_custom_type">imgproxy</field>
+                        <field id="catalog_media_url_format_custom_imgproxy_source_type" separator=",">custom_url</field>
+                    </depends>
+                    <comment><![CDATA[Enter a custom URL to proxy.]]></comment>
+                </field>
             </group>
         </section>
     </system>