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REI-Fixed/app/assets/javascripts/components/reducers/notifications.jsx

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import {
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NOTIFICATIONS_UPDATE,
NOTIFICATIONS_REFRESH_SUCCESS,
NOTIFICATIONS_EXPAND_SUCCESS
} from '../actions/notifications';
import Immutable from 'immutable';
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const initialState = Immutable.Map({
items: Immutable.List(),
next: null,
loaded: false
});
const notificationToMap = notification => Immutable.Map({
id: notification.id,
type: notification.type,
account: notification.account.id,
status: notification.status ? notification.status.id : null
});
const normalizeNotification = (state, notification) => {
return state.update('items', list => list.unshift(notificationToMap(notification)));
};
const normalizeNotifications = (state, notifications, next) => {
let items = Immutable.List();
const loaded = state.get('loaded');
notifications.forEach((n, i) => {
items = items.set(i, notificationToMap(n));
});
return state.update('items', list => loaded ? list.unshift(...items) : list.push(...items)).set('next', next).set('loaded', true);
};
const appendNormalizedNotifications = (state, notifications, next) => {
let items = Immutable.List();
notifications.forEach((n, i) => {
items = items.set(i, notificationToMap(n));
});
return state.update('items', list => list.push(...items)).set('next', next);
};
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export default function notifications(state = initialState, action) {
switch(action.type) {
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case NOTIFICATIONS_UPDATE:
return normalizeNotification(state, action.notification);
case NOTIFICATIONS_REFRESH_SUCCESS:
return normalizeNotifications(state, action.notifications, action.next);
case NOTIFICATIONS_EXPAND_SUCCESS:
return appendNormalizedNotifications(state, action.notifications, action.next);
default:
return state;
}
};