notification menu

src/components/main/Notifications/index.tsx

@@ -0,0 +1,62 @@
+import React, { FC, useMemo, useState, useCallback, useEffect } from 'react';
+import { Icon } from '~/components/input/Icon';
+import styles from './styles.scss';
+import { connect } from 'react-redux';
+import { selectAuthUpdates, selectAuthUser } from '~/redux/auth/selectors';
+import pick from 'ramda/es/pick';
+import classNames from 'classnames';
+import * as AUTH_ACTIONS from '~/redux/auth/actions';
+import { NotificationBubble } from '../../notifications/NotificationBubble';
+
+const mapStateToProps = state => ({
+  user: pick(['last_seen_messages'], selectAuthUser(state)),
+  updates: selectAuthUpdates(state),
+});
+
+const mapDispatchToProps = {
+  authSetLastSeenMessages: AUTH_ACTIONS.authSetLastSeenMessages,
+};
+
+type IProps = ReturnType<typeof mapStateToProps> & typeof mapDispatchToProps & {};
+
+const NotificationsUnconnected: FC<IProps> = ({
+  updates: { last, notifications },
+  user: { last_seen_messages },
+  authSetLastSeenMessages,
+}) => {
+  const [visible, setVisible] = useState(true);
+  const has_new = useMemo(
+    () =>
+      notifications.length &&
+      last &&
+      Date.parse(last) &&
+      (!last_seen_messages ||
+        (Date.parse(last_seen_messages) && Date.parse(last) > Date.parse(last_seen_messages))),
+    [last, last_seen_messages, notifications]
+  );
+
+  useEffect(() => {
+    if (!visible || !has_new) return;
+    authSetLastSeenMessages(new Date().toISOString());
+  }, [visible]);
+
+  const showList = useCallback(() => setVisible(true), [setVisible]);
+  const hideList = useCallback(() => setVisible(false), [setVisible]);
+
+  return (
+    <div className={classNames(styles.wrap, { [styles.is_new]: has_new })}>
+      <div className={styles.icon} onFocus={showList} onBlur={hideList} tabIndex={-1}>
+        {has_new ? <Icon icon="bell_ring" size={24} /> : <Icon icon="bell" size={24} />}
+      </div>
+
+      {visible && <NotificationBubble notifications={notifications} />}
+    </div>
+  );
+};
+
+const Notifications = connect(
+  mapStateToProps,
+  mapDispatchToProps
+)(NotificationsUnconnected);
+
+export { Notifications };