Informando quais formatos podem entrar no fluxo de download e permitindo identificar o mime do formato

src/app/Enums/ReportFormatEnum.php

@@ -29,4 +29,45 @@ class ReportFormatEnum
             self::XLSX,
         ];
     }
+
+    /**
+     * @return string[]
+     */
+    public static function downloadable(): array
+    {
+        return [
+            self::PDF,
+            self::XML,
+            self::CSV,
+            self::DOCX,
+            self::ODT,
+            self::ODS,
+            self::XLSX,
+        ];
+    }
+
+    /**
+     * @param string $format
+     * @return string
+     */
+    public static function getMimeType(string $format): string
+    {
+        switch ($format) {
+            case self::PDF:
+                return 'application/pdf';
+            case self::XML:
+                return 'application/xml';
+            case self::CSV:
+                return 'text/csv';
+            case self::DOCX:
+                return 'application/vnd.openxmlformats-officedocument.wordprocessingml.document';
+            case self::ODT:
+                return 'application/vnd.oasis.opendocument.text';
+            case self::XLSX:
+            case self::ODS:
+                return 'application/vnd.oasis.opendocument.spreadsheet';
+            default:
+                return 'text/html';
+        }
+    }
 }