Handle message type 7 (member join)

When message type 7 is received from the gateway, transform the content
if the type is 7 to a proper greeting.

Additionally, when the type is 6, provide a proper content notifying that a
user has pinned a message to the channel.

These transformations are not done at REST-level when retrieving messages, and
are instead done in `ChannelId::message` and `ChannelId::messages`.

1 files changed, 6 insertions, 2 deletions

diff --git a/src/client/dispatch.rs b/src/client/dispatch.rs
index cea3ed3..56b5f6e 100644
--- a/src/client/dispatch.rs
+++ b/src/client/dispatch.rs
@@ -108,10 +108,14 @@ pub fn dispatch(event: Event,
 }
 
 fn dispatch_message(context: Context,
-                    message: Message,
+                    mut message: Message,
                     event_store: &Arc<RwLock<EventStore>>) {
     if let Some(handler) = handler!(on_message, event_store) {
-        thread::spawn(move || (handler)(context, message));
+        thread::spawn(move || {
+            message.transform_content();
+
+            (handler)(context, message);
+        });
     }
 }