add user notifications (#148)

* added notification settings

* notifications: added list to profile

* notifications: changed appearance for comment notifications

src/hooks/notifications/useNotificationSettingsRequest.ts

@@ -0,0 +1,36 @@
+import { isValid, parseISO } from 'date-fns';
+import useSWR from 'swr';
+
+import { apiGetNotificationSettings } from '~/api/notifications/settings';
+import { API } from '~/constants/api';
+
+import { useAuth } from '../auth/useAuth';
+
+const refreshInterval = 60e3; // 1min
+
+export const useNotificationSettingsRequest = () => {
+  const { isUser } = useAuth();
+  const {
+    data,
+    isValidating: isLoading,
+    error,
+  } = useSWR(
+    isUser ? API.NOTIFICATIONS.SETTINGS : null,
+    async () => apiGetNotificationSettings(),
+    { refreshInterval },
+  );
+
+  return {
+    isLoading,
+    error,
+    lastSeen:
+      data?.last_seen && isValid(parseISO(data.last_seen))
+        ? parseISO(data?.last_seen)
+        : undefined,
+    lastDate:
+      data?.last_date && isValid(parseISO(data.last_date))
+        ? parseISO(data?.last_date)
+        : undefined,
+    enabled: !!data?.enabled && (data.flow || data.comments),
+  };
+};