Added Alert Dialogue

lib/Screens/More.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:school_management_system/main.dart';
 
 class MorePage extends StatefulWidget {
   const MorePage({Key? key}) : super(key: key);
@@ -12,6 +13,91 @@ class _MorePageState extends State<MorePage> {
   Widget build(BuildContext context) {
     return Container(
       color: Colors.white,
+      child: Column(
+        children: [
+          Card(
+            child: TextButton(
+              onPressed: () {
+                authInstance.signOut();
+                Navigator.pushReplacementNamed(context, '/Login');
+              },
+              child: Row(
+                children: [
+                  Icon(Icons.logout,),
+                  Padding(
+                    padding: const EdgeInsets.all(8.0),
+                    child: Text("Logout", style: TextStyle()),
+                  ),
+                ],
+              ),
+              style: ButtonStyle(
+                fixedSize: MaterialStateProperty.all(Size.fromWidth(MediaQuery.of(context).size.width-10))
+              ),
+            ),
+          ),
+          Card(
+            child: TextButton(
+              onPressed: () {
+                showAlertDialog(
+                  context,
+                  acceptBtnText: "Delete",
+                  onPressedAcceptBtn: () {authInstance.currentUser!.delete();Navigator.pushReplacementNamed(context, '/SignUp');},
+                  onPressedCancelBtn: () {Navigator.of(context).pop();},
+                  title: "Delete Alert",
+                  description: "Are you sure you want to delete you account permanently?"
+                );
+              },
+              child: Row(
+                children: [
+                  Icon(Icons.delete, color: Colors.red,),
+                  Padding(
+                    padding: const EdgeInsets.all(8.0),
+                    child: Text("Delete Account", style: TextStyle(color: Colors.red)),
+                  ),
+                ],
+              ),
+            ),
+          )
+        ],
+      ),
     );
   }
 }
+
+showAlertDialog(BuildContext context, {
+  required String description,
+  required String title,
+  String cancelBtnText='Cancel',
+  required void Function()? onPressedCancelBtn,
+  String acceptBtnText='Accept',
+  required void Function()? onPressedAcceptBtn,
+}) {
+
+  // set up the buttons
+  Widget cancelButton = TextButton(
+    child: Text(cancelBtnText),
+    onPressed: onPressedCancelBtn,
+  );
+  Widget continueButton = TextButton(
+    child: Text(acceptBtnText, style: TextStyle(color: Colors.red),),
+    onPressed: onPressedAcceptBtn,
+  );
+
+  // set up the AlertDialog
+  AlertDialog alert = AlertDialog(
+    title: Text(title),
+    content: Text(description),
+    actions: [
+      cancelButton,
+      continueButton,
+    ],
+  );
+
+  // show the dialog
+  showDialog(
+    context: context,
+    builder: (BuildContext context) {
+      return alert;
+    },
+  );
+}