împl

src/classes/session.ts

@@ -0,0 +1,55 @@
+export class Session {
+
+    private static instance: Session;
+
+    private constructor() {
+    }
+
+    static getInstance() {
+        if (!Session.instance && !Session.load()) {
+            Session.instance = new Session();
+        }
+        if (!Session.instance && Session.load()) {
+            Session.instance = <Session>Session.load();
+        }
+        Session.save();
+        return Session.instance;
+    }
+
+    public static save() {
+        localStorage.setItem('session', JSON.stringify(this.instance));
+    }
+
+    public static load(): Session | null {
+        const session = localStorage.getItem('session');
+        if (session) {
+            const obj = <Session>JSON.parse(session);
+            const result = new Session();
+            result.contentTest = obj.contentTest;
+            return result;
+        }
+        return null;
+    }
+
+    public static reloadSession() {
+        const session = localStorage.getItem('session');
+        if (session) {
+            const obj = <Session>JSON.parse(session);
+            const result = new Session();
+            result.contentTest = obj.contentTest;
+            Session.instance = result;
+        }
+    }
+
+    public static resetSession() {
+        localStorage.removeItem('session');
+        sessionStorage.removeItem('session');
+        this.instance = new Session();
+        Session.save();
+        location.reload();
+    }
+
+    public readonly sessionId: string = crypto.randomUUID();
+
+    public contentTest: string = 'This is a simple example of a web application';
+}