feat: get fsm to a working testing state

src/controllers/client/Session.tsx

@@ -1,4 +1,4 @@
-import { action, makeAutoObservable } from "mobx";
+import { action, computed, makeAutoObservable } from "mobx";
 import { Client } from "revolt.js";
 
 type State = "Ready" | "Connecting" | "Online" | "Disconnected" | "Offline";
@@ -34,6 +34,17 @@ export default class Session {
         window.addEventListener("offline", this.onOffline);
     }
 
+    /**
+     * Initiate logout and destroy client.
+     */
+    @action destroy() {
+        if (this.client) {
+            this.client.logout(false);
+            this.state = "Ready";
+            this.client = null;
+        }
+    }
+
     private onOnline() {
         this.emit({
             action: "ONLINE",
@@ -90,6 +101,8 @@ export default class Session {
     }
 
     @action async emit(data: Transition) {
+        console.info("Handle event:", data);
+
         switch (data.action) {
             // Login with session
             case "LOGIN": {
@@ -161,4 +174,12 @@ export default class Session {
             }
         }
     }
+
+    /**
+     * Whether we are ready to render.
+     * @returns Boolean
+     */
+    @computed get ready() {
+        return this.client?.user;
+    }
 }