Initial commit

frontend/index.js

@@ -0,0 +1,43 @@
+class ButtonLoginChecker{
+    constructor(){
+        this.loggedOutButtons = [
+            { id: "loginBtn", route: "/login" },
+            { id: "registerBtn", route: "/register" }
+        ];
+
+        this.loggedInButtons = [
+            { id: "dashboardBtn", route: "/dashboard" },
+        ];
+
+        this.init();
+    }
+
+    async init(){
+        const isLoggedIn = await this.checkIsLoggedIn();
+
+        this.showButton(isLoggedIn);
+    }
+
+    showButton(isLoggedIn){
+        const buttons = isLoggedIn ? this.loggedOutButtons : this.loggedInButtons;
+
+        buttons.forEach(button => {
+            document.getElementById(button.id).style.display = "none";
+        })
+    }
+
+    async checkIsLoggedIn(){
+        try{
+            const response = await fetch("/api/dashboard");
+
+            return !response.redirected;
+        }
+        catch(error){
+            console.error(error);
+
+            return false;
+        }
+    }
+}
+
+new ButtonLoginChecker();