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wp-content/plugins/webp-express/lib/classes/HandleDeleteFileHook.php

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+<?php
+
+namespace WebPExpress;
+use \WebPExpress\Convert;
+use \WebPExpress\Mime;
+use \WebPExpress\SanityCheck;
+
+class HandleDeleteFileHook
+{
+
+    /**
+     *  hook: wp_delete_file
+     */
+    public static function deleteAssociatedWebP($filename)
+    {
+        try {
+            $filename = SanityCheck::absPathExistsAndIsFileInDocRoot($filename);
+
+            $mimeTypes = [
+                'image/jpeg',
+                'image/png',
+            ];
+            if (!Mime::isOneOfTheseImageMimeTypes($filename, $mimeTypes)) {
+                return $filename;
+            }
+
+            $config = Config::loadConfigAndFix();
+            $destination = Convert::getDestination($filename, $config);
+            if (@file_exists($destination)) {
+                if (@unlink($destination)) {
+                    Convert::updateBiggerThanOriginalMark($filename, $destination, $config);
+                } else {
+                    error_log('WebP Express failed deleting webp:' . $destination);
+                }
+            }
+        } catch (SanityException $e) {
+            // fail silently. (maybe we should write to debug log instead?)
+        }
+
+        return $filename;
+    }
+}