import { put, takeLatest } from 'redux-saga/effects';
import * as types from '../actions/actionsTypes';
import RocketChat from '../lib/rocketchat';
import { readyMentionedMessages } from '../actions/mentionedMessages';

let sub;
let newSub;

const openMentionedMessagesRoom = function* openMentionedMessagesRoom({ rid, limit }) {
	newSub = yield RocketChat.subscribe('mentionedMessages', rid, limit);
	yield put(readyMentionedMessages());
	if (sub) {
		sub.unsubscribe().catch(e => console.warn('openMentionedMessagesRoom', e));
	}
	sub = newSub;
};

const closeMentionedMessagesRoom = function* closeMentionedMessagesRoom() {
	if (sub) {
		yield sub.unsubscribe().catch(e => console.warn('closeMentionedMessagesRoom sub', e));
	}
	if (newSub) {
		yield newSub.unsubscribe().catch(e => console.warn('closeMentionedMessagesRoom newSub', e));
	}
};

const root = function* root() {
	yield takeLatest(types.MENTIONED_MESSAGES.OPEN, openMentionedMessagesRoom);
	yield takeLatest(types.MENTIONED_MESSAGES.CLOSE, closeMentionedMessagesRoom);
};
export default root;