vn-verdnaturachat/app/utils/isReadOnly.ts

import RocketChat from '../lib/rocketchat';
import reduxStore from '../lib/createStore';
import { ISubscription } from '../definitions/ISubscription';

const canPostReadOnly = async ({ rid }: { rid: string }) => {
	// TODO: this is not reactive. If this permission changes, the component won't be updated
	const postReadOnlyPermission = reduxStore.getState().permissions['post-readonly'];
	const permission = await RocketChat.hasPermission([postReadOnlyPermission], rid);
	return permission[0];
};

const isMuted = (room: ISubscription, user: { username: string }) =>
	room && room.muted && room.muted.find && !!room.muted.find(m => m === user.username);

export const isReadOnly = async (
	room: ISubscription,
	user: { id?: string; username: string; token?: string }
): Promise<boolean> => {
	if (room.archived) {
		return true;
	}
	if (isMuted(room, user)) {
		return true;
	}
	if (room?.ro) {
		const allowPost = await canPostReadOnly(room);
		if (allowPost) {
			return false;
		}
		return true;
	}
	return false;
};