Add support for CAPTCHA

Model/Captcha/DefaultModel/Plugin.php

@@ -0,0 +1,32 @@
+<?php
+namespace Thai\S3\Model\Captcha\DefaultModel;
+
+use Thai\S3\Helper\Data;
+use Magento\Cms\Model\Wysiwyg\Images\Storage;
+use Magento\Framework\App\Filesystem\DirectoryList;
+use Magento\MediaStorage\Helper\File\Storage\Database;
+
+class Plugin
+{
+    private $helper;
+    private $database;
+
+    public function __construct(
+        Data $helper,
+        Database $database
+    ) {
+        $this->helper = $helper;
+        $this->database = $database;
+    }
+
+    public function afterGenerate(\Magento\Captcha\Model\DefaultModel $subject, $result)
+    {
+        if ($this->helper->checkS3Usage()) {
+            $imgFile = $subject->getImgDir() . $result . $subject->getSuffix();
+            $relativeImgFile = $this->database->getMediaRelativePath($imgFile);
+            $this->database->getStorageDatabaseModel()->saveFile($relativeImgFile);
+        }
+
+        return $result;
+    }
+}

README.md

@@ -22,6 +22,7 @@ The following images are automatically saved to S3:
 * Generated thumbnails
 * WYSIWYG images
 * Category images
+* CAPTCHA images
 
 ### Magento can now scale horizontally
 

etc/di.xml

@@ -49,4 +49,7 @@
     <type name="Magento\Swatches\Helper\Media">
         <plugin name="thai_s3_helper_swatches_media_plugin" type="Thai\S3\Helper\Swatches\Media\Plugin" />
     </type>
+    <type name="Magento\Captcha\Model\DefaultModel">
+        <plugin name="thai_s3_model_captcha_defaultmodel_plugin" type="Thai\S3\Model\Captcha\DefaultModel\Plugin" />
+    </type>
 </config>