Added login and signup validation

src/views/frontpage/LoginView.vue

@@ -10,6 +10,16 @@ import { useRouter } from 'vue-router';
 let loginStatus = ref('');
 
 const customLoginFunction = async (username: string, password: string) => {
+  if (!username) {
+    loginStatus.value = 'Please enter a username';
+    return;
+  }
+
+  if (!password) {
+    loginStatus.value = 'Please enter a password';
+    return;
+  }
+
   try {
     const response = await fetch('http://localhost:8080/users/login', {
       method: 'POST',

src/views/frontpage/SignUpView.vue

@@ -14,6 +14,22 @@ import router from '@/router'
 let loginStatus = ref('');
 
 const customLoginFunction = async (username: string, password: string, email: string) => {
+  if (!username) {
+    loginStatus.value = 'Please enter a username';
+    return;
+  }
+
+  if (!password) {
+    loginStatus.value = 'Please enter a password';
+    return;
+  }
+
+  const emailRegex = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
+  if (!emailRegex.test(email)) {
+    loginStatus.value = 'Please enter a valid email address';
+    return;
+  }
+
   const apiUrl = 'http://localhost:8080/users/create'; 
   try {
     const response = await fetch(apiUrl, {