add background sync helper function (untested)

src/tui.jl

@@ -3,3 +3,26 @@ roomlist = Dict()
 function updateroomlist(user::MatrixUser)
     global roomlist = listjoined(user)
 end
+
+function startsync()
+    background_sync(syncstatus)
+
+    function showevent(_...)
+        global syncstatus
+        let ks = syncstatus.sync["rooms"]["join"]
+            for k in keys(ks)
+                try
+                    for msg in ks[k]["timeline"]["events"]
+                        println(MatrixMsg(msg["sender"],
+                                          msg["origin_server_ts"],
+                                          msg["content"]["msgtype"],
+                                          msg["content"]["body"]))
+                    end
+                catch
+                    continue
+                end
+            end
+        end
+    end
+    set_hook!(:sync, showevent)
+end