dispatch/client/js/middleware/message.js
2020-06-15 10:58:51 +02:00

36 lines
820 B
JavaScript

import { ADD_MESSAGES, ADD_FETCHED_MESSAGES } from 'state/actions';
//
// This middleware handles waiting until MessageBox
// is ready before adding messages to the top
//
const message = store => next => {
const ready = {};
const cache = {};
return action => {
if (action.type === ADD_MESSAGES && action.prepend) {
const key = `${action.network} ${action.channel}`;
if (ready[key]) {
ready[key] = false;
return next(action);
}
cache[key] = action;
} else if (action.type === ADD_FETCHED_MESSAGES) {
const key = `${action.network} ${action.channel}`;
ready[key] = true;
if (cache[key]) {
store.dispatch(cache[key]);
cache[key] = undefined;
}
} else {
return next(action);
}
};
};
export default message;