PLT-4403 Add server-based channel autocomplete, search and paging (#4585)

* Add more channel paging API

* Add channel paging support to client

* Add DB channel search functions

* Add API for searching more channels

* Add more channel search functionality to client

* Add API for autocompleting channels

* Add channel autocomplete functionality to the client

* Move to be deprecated APIs to their own file

* Final clean-up

* Fixes related to feedback

* Localization changes

* Add unit as suffix to timeout constants

webapp/actions/channel_actions.jsx

@@ -191,3 +191,55 @@ export function loadChannelsForCurrentUser() {
     AsyncClient.getChannels();
     AsyncClient.getMyChannelMembers();
 }
+
+export function joinChannel(channel, success, error) {
+    Client.joinChannel(
+        channel.id,
+        () => {
+            ChannelStore.removeMoreChannel(channel.id);
+
+            if (success) {
+                success();
+            }
+        },
+        () => {
+            if (error) {
+                error();
+            }
+        }
+    );
+}
+
+export function searchMoreChannels(term, success, error) {
+    Client.searchMoreChannels(
+        term,
+        (data) => {
+            if (success) {
+                success(data);
+            }
+        },
+        (err) => {
+            if (error) {
+                error(err);
+            }
+        }
+    );
+}
+
+export function autocompleteChannels(term, success, error) {
+    Client.autocompleteChannels(
+        term,
+        (data) => {
+            if (success) {
+                success(data);
+            }
+        },
+        (err) => {
+            AsyncClient.dispatchError(err, 'autocompleteChannels');
+
+            if (error) {
+                error(err);
+            }
+        }
+    );
+}

webapp/actions/global_actions.jsx

@@ -482,14 +482,6 @@ export function emitUserLoggedOutEvent(redirectTo = '/', shouldSignalLogout = tr
     );
 }
 
-export function emitJoinChannelEvent(channel, success, failure) {
-    Client.joinChannel(
-        channel.id,
-        success,
-        failure
-    );
-}
-
 export function emitSearchMentionsEvent(user) {
     let terms = '';
     if (user.notify_props && user.notify_props.mention_keys) {