1 files changed, 20 insertions, 1 deletions
diff --git a/ui/src/utils.ts b/ui/src/utils.ts
index c7f3bad8..61744e90 100644
--- a/ui/src/utils.ts
+++ b/ui/src/utils.ts
@@ -1,4 +1,4 @@
-import { UserOperation, Comment } from './interfaces';
+import { UserOperation, Comment, User } from './interfaces';
 import * as markdown_it from 'markdown-it';
 
 export let repoUrl = 'https://github.com/dessalines/lemmy';
@@ -40,4 +40,23 @@ export function addTypeInfo<T>(arr: Array<T>, name: string): Array<{type_: strin
   return arr.map(e => {return {type_: name, data: e}});
 }
 
+export function canMod(user: User, modIds: Array<number>, creator_id: number): boolean {
+  // You can do moderator actions only on the mods added after you.
+  if (user) {
+    let yourIndex = modIds.findIndex(id => id == user.id);
+    if (yourIndex == -1) {
+      return false;
+    } else { 
+      modIds = modIds.slice(0, yourIndex+1); // +1 cause you cant mod yourself
+      return !modIds.includes(creator_id);
+    }
+  } else {
+    return false;
+  }
+}
+
+export function isMod(modIds: Array<number>, creator_id: number): boolean {
+  return modIds.includes(creator_id);
+}
+
 export let fetchLimit: number = 20;