auth.js

const sign_in_btn = document.querySelector("#sign-in-btn");
const sign_up_btn = document.querySelector("#sign-up-btn");
const container = document.querySelector(".container");

// Allowed email domains for registration
const allowedDomains = ['gmail.com', 'outlook.com', 'yahoo.com', 'hotmail.com' , 'icloud.com' , 'protonmail.com' , 'tutanota.com']; // Add more as needed

sign_up_btn.addEventListener("click", () => {
  container.classList.add("sign-up-mode");
});

sign_in_btn.addEventListener("click", () => {
  container.classList.remove("sign-up-mode");
});

// Sign in form submission
document.querySelector(".sign-in-form").addEventListener('submit', function(event) {
  event.preventDefault();

  // Get the input values
  const username = document.querySelector(".sign-in-form input[type='text']").value;
  const password = document.querySelector(".sign-in-form input[type='password']").value;

  // Dummy login logic for demo purposes
  if (username === 'admin' && password === 'password') {
    alert('Login successful!');
    // Redirect to dashboard page
    window.location.href = 'index.html';
  } else {
    alert('Invalid username or password');
  }
});

// Sign up form submission
document.querySelector(".sign-up-form").addEventListener('submit', function(event) {
  event.preventDefault();

  // Get the input values
  const username = document.querySelector(".sign-up-form input[type='text']").value;
  const email = document.querySelector(".sign-up-form input[type='email']").value;
  const password = document.querySelector(".sign-up-form input[type='password']").value;

  if (username === '' || email === '' || password === '') {
    alert('Please fill in all fields');
    return;
  }

  // Extract domain from email
  const emailDomain = email.split('@')[1];

  // Check if email domain is allowed
  if (!allowedDomains.includes(emailDomain)) {
    alert('Please use an email from a reputable provider (Gmail, Outlook, Yahoo, etc.)');
    return; // Prevent registration
  }

  // Dummy signup logic for demo purposes
  localStorage.setItem('username', username);
  localStorage.setItem('email', email);
  localStorage.setItem('password', password);
  localStorage.setItem('isLoggedIn', 'true');

  alert('Signup successful!');
  // Redirect to dashboard page
  window.location.href = 'index.html';
});

// Toggle password visibility
function togglePassword(fieldId, icon) {
  const field = document.getElementById(fieldId);
  const isPassword = field.type === 'password';

  // Toggle between 'password' and 'text'
  field.type = isPassword ? 'text' : 'password';

  // Change the icon class between eye and eye-slash
  icon.classList.toggle('fa-eye-slash', isPassword);
  icon.classList.toggle('fa-eye', !isPassword);
}

// Check password strength
function checkPasswordStrength() {
  const password = document.querySelector(".sign-up-form input[type='password']").value;
  const strengthWeak = document.getElementById('strength-weak');
  const strengthMedium = document.getElementById('strength-medium');
  const strengthStrong = document.getElementById('strength-strong');

  let strength = 0;

  if (password.length >= 8) strength++;
  if (password.match(/[A-Z]/)) strength++;
  if (password.match(/[a-z]/)) strength++;
  if (password.match(/[0-9]/)) strength++;
  if (password.match(/[^a-zA-Z0-9]/)) strength++;

  strengthWeak.className = '';
  strengthMedium.className = '';
  strengthStrong.className = '';

  if (strength >= 1) strengthWeak.className = 'weak';
  if (strength >= 3) strengthMedium.className = 'medium';
  if (strength >= 5) strengthStrong.className = 'strong';
}

// Call the checkPasswordStrength function on password input
document.querySelector(".sign-up-form input[type='password']").addEventListener('input', checkPasswordStrength);