Can update following status of a group

src/controllers/GroupsController.ts

@@ -537,6 +537,21 @@ export class GroupsController {
 		h.success("Your membership has been successfully deleted!");
 	}
 
+
+	/**
+	 * Update the following status of a user
+	 * 
+	 * @param h Request handler
+	 */
+	public static async SetFollowing(h: RequestHandler) {
+		const groupID = await h.postGroupIDWithAccess("groupID", GroupsAccessLevel.MEMBER_ACCESS);
+		const following = h.postBool("follow");
+
+		await GroupsHelper.SetFollowing(groupID, h.getUserId(), following);
+
+		h.success("Follow status has been successfully updated!");
+	}
+
 	/**
 	 * Turn a GroupInfo object into a valid API object
 	 * 

src/controllers/Routes.ts

@@ -126,4 +126,6 @@ export const Routes : Route[] = [
 	{path: "/groups/cancel_invitation", cb: (h) => GroupsController.CancelInvitation(h)},
 
 	{path: "/groups/remove_membership", cb: (h) => GroupsController.RemoveMembership(h)},
+
+	{path: "/groups/set_following", cb: (h) => GroupsController.SetFollowing(h)},
 ]

src/helpers/GroupsHelper.ts

@@ -254,6 +254,26 @@ export class GroupsHelper {
 		});
 	}
 
+	/**
+	 * Update following status of a user
+	 * 
+	 * @param groupID Target group ID
+	 * @param userID Target user ID
+	 * @param follow true to follow / false else
+	 */
+	public static async SetFollowing(groupID: number, userID: number, follow: boolean) {
+		await DatabaseHelper.UpdateRows({
+			table: GROUPS_MEMBERS_TABLE,
+			where: {
+				groups_id: groupID,
+				user_id: userID
+			},
+			set: {
+				following: follow ? 1 : 0
+			}
+		});
+	}
+
 	/**
 	 * Delete completely a user membership
 	 *