Add logging and fix channel merging and removing

frontend/src/views/main.ts

@@ -140,6 +140,21 @@ export class MainView extends View {
             }
             const d = new ChannelDialog(state.currentChannel!);
             d.open().then((chan) => {
+                if (!chan) {
+                    state.removeChannel(state.currentChannel!);
+                    state.currentChannel = null;
+                    this.updateChannelList();
+                    state.save();
+                    if (state.channelList.channels.length > 0) {
+                        return this.switchChannel(state.channelList.channels[0].id.toString());
+                    } else {
+                        return this.createNewChannel();
+                    }
+                }
+                if (chan.messages.length < 1) {
+                    this.renderInitialMessageList(true);
+                    this.syncMessages();
+                }
                 state.save();
                 this.updateChannelList();
             });