Enhance API functionality: add token generation methods, implement entry management, and improve setup process with settings storage

public/templates/setup/setup.html

@@ -66,6 +66,18 @@
             <md-filled-button id="close-button">Close</md-filled-button>
         </div>
     </md-dialog>
+    <md-dialog id="success-dialog">
+        <div slot="headline">
+            Success!
+        </div>
+        <form slot="content" method="dialog" id="error-dialog-text">
+            Your Guestbook is finaly configurated! You can find the admin Panel on <span id="success-admin-url"></span>.
+        </form>
+        <div slot="actions">
+            <md-filled-button id="success-dialog-home">Open Guestbook</md-filled-button>
+            <md-filled-button id="success-dialog-admin">Open Admin Panel</md-filled-button>
+        </div>
+    </md-dialog>
     <script>
         if (window.location.protocol == "http:") {
             document.getElementById("http-dialog").setAttribute("open", "");
@@ -80,7 +92,15 @@
 
         document.getElementById("close-button").addEventListener("click", function() {
             document.getElementById("error-dialog").removeAttribute("open");
-        })
+        });
+
+        document.getElementById("success-dialog-home").addEventListener("click", function() {
+            window.location.reload();
+        });
+
+        document.getElementById("success-dialog-admin").addEventListener("click", function() {
+            window.location.href = "/admin";
+        });
 
         function checkSetup() {
             const username = document.getElementById("setup-username").value;
@@ -108,14 +128,15 @@
                 }
             })
             .then(response => response.json())
-            .then(data => function() {
-                if (data.status !== 200) {
+            .then(data => {
+                if (data.status == 200) {
+                    document.getElementById("success-admin-url").innerHTML = window.location.href + "admin";
+                    document.getElementById("success-dialog").setAttribute("open", "");
+                }else{
                     console.error("Server returned following message: " + data.error);
 
                     document.getElementById("error-dialog-text").innerHTML = data.display_error;
                     document.getElementById("error-dialog").setAttribute("open", "");
-                }else{
-                    alert("Tres bien!");
                 }
             })
         }