1 files changed, 14 insertions, 1 deletions
diff --git a/src/tools/chmod-calculator/chmod-calculator.service.ts b/src/tools/chmod-calculator/chmod-calculator.service.ts
index 8953551..e004671 100644
--- a/src/tools/chmod-calculator/chmod-calculator.service.ts
+++ b/src/tools/chmod-calculator/chmod-calculator.service.ts
@@ -1,7 +1,7 @@
 import _ from 'lodash';
 import type { GroupPermissions, Permissions } from './chmod-calculator.types';
 
-export { computeChmodOctalRepresentation };
+export { computeChmodOctalRepresentation, computeChmodSymbolicRepresentation };
 
 function computeChmodOctalRepresentation({ permissions }: { permissions: Permissions }): string {
   const permissionValue = { read: 4, write: 2, execute: 1 };
@@ -15,3 +15,16 @@ function computeChmodOctalRepresentation({ permissions }: { permissions: Permiss
     getGroupPermissionValue(permissions.public),
   ].join('');
 }
+
+function computeChmodSymbolicRepresentation({ permissions }: { permissions: Permissions }): string {
+  const permissionValue = { read: 'r', write: 'w', execute: 'x' };
+
+  const getGroupPermissionValue = (permission: GroupPermissions) =>
+    _.reduce(permission, (acc, isPermSet, key) => acc + (isPermSet ? _.get(permissionValue, key, '') : '-'), '');
+
+  return [
+    getGroupPermissionValue(permissions.owner),
+    getGroupPermissionValue(permissions.group),
+    getGroupPermissionValue(permissions.public),
+  ].join('');
+}