refactor: allow user.hidePrivateData() to handle an array of `userData`

src/user/data.js

@@ -145,25 +145,33 @@ module.exports = function (User) {
 		return await User.getUsersFields(uids, []);
 	};
 
-	User.hidePrivateData = async function (userData, callerUID) {
-		const _userData = { ...userData };
+	User.hidePrivateData = async function (users, callerUID) {
+		if (!Array.isArray(users)) {
+			users = [users];
+		}
 
-		const isSelf = parseInt(callerUID, 10) === parseInt(_userData.uid, 10);
 		const [userSettings, isAdmin, isGlobalModerator] = await Promise.all([
-			User.getSettings(_userData.uid),
+			User.getMultipleUserSettings(users.map(user => user.uid)),
 			User.isAdministrator(callerUID),
 			User.isGlobalModerator(callerUID),
 		]);
-		const privilegedOrSelf = isAdmin || isGlobalModerator || isSelf;
 
-		if (!privilegedOrSelf && (!userSettings.showemail || meta.config.hideEmail)) {
-			_userData.email = '';
-		}
-		if (!privilegedOrSelf && (!userSettings.showfullname || meta.config.hideFullname)) {
-			_userData.fullname = '';
-		}
+		users = await Promise.all(users.map(async (userData, idx) => {
+			const _userData = { ...userData };
+
+			const isSelf = parseInt(callerUID, 10) === parseInt(_userData.uid, 10);
+			const privilegedOrSelf = isAdmin || isGlobalModerator || isSelf;
+
+			if (!privilegedOrSelf && (!userSettings[idx].showemail || meta.config.hideEmail)) {
+				_userData.email = '';
+			}
+			if (!privilegedOrSelf && (!userSettings[idx].showfullname || meta.config.hideFullname)) {
+				_userData.fullname = '';
+			}
+			return _userData;
+		}));
 
-		return _userData;
+		return users.length === 1 ? users.pop() : users;
 	};
 
 	async function modifyUserData(users, requestedFields, fieldsToRemove) {