Improve behaviour of searching and adding contacts

- Styles are still supposed to be ugly
- Uniformize styles of list items for contacts and conversations
- Search field uses React Query for cache and get cleared properly
- Adding a contact updates the conversation list and closes the modal

Change-Id: I5949dff739a0f18fd39a89a744e1d26dcb36e2b2
diff --git a/client/src/services/contactQueries.ts b/client/src/services/contactQueries.ts
new file mode 100644
index 0000000..078240d
--- /dev/null
+++ b/client/src/services/contactQueries.ts
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2022 Savoir-faire Linux Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation; either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this program.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+import { useMutation, useQuery } from '@tanstack/react-query';
+import { ContactDetails, LookupResult } from 'jami-web-common';
+
+import { useAuthContext } from '../contexts/AuthProvider';
+import { Contact } from '../models/contact';
+import { useRefreshConversationsSummaries } from './conversationQueries';
+
+export const useContactsSearchQuery = (searchQuery: string) => {
+  const { axiosInstance } = useAuthContext();
+  return useQuery({
+    queryKey: ['nameserver', searchQuery],
+    queryFn: async () => {
+      const { data } = await axiosInstance.get<LookupResult>(`/ns/username/${searchQuery}`);
+      return data ? [new Contact(data.address, data.username)] : [];
+    },
+    enabled: !!searchQuery,
+  });
+};
+
+export const useAddContactMutation = () => {
+  const { axiosInstance } = useAuthContext();
+
+  const refreshConversationsSummaries = useRefreshConversationsSummaries();
+
+  return useMutation({
+    mutationFn: async (contactId: string) => {
+      const { data } = await axiosInstance.put<ContactDetails>(`/contacts/${contactId}`);
+      return data;
+    },
+    onSuccess: () => {
+      refreshConversationsSummaries();
+    },
+  });
+};