telepost/frontend/src/lib/utils/auth.js

// Utility functions for authentication checks

/**
 * Check if user is authenticated by checking for token in localStorage
 * @returns {boolean} - True if user is authenticated, false otherwise
 */
export function isAuthenticated() {
  const token = localStorage.getItem('token');
  return !!token;
}

/**
 * Get the current user's token
 * @returns {string|null} - Token if exists, null otherwise
 */
export function getToken() {
  return localStorage.getItem('token');
}

/**
 * Clear authentication data
 */
export function logout() {
  localStorage.removeItem('token');
}

/**
 * Validate token by making a request to the backend
 * @returns {Promise<boolean>} - Promise that resolves to true if token is valid, false otherwise
 */
export async function validateToken() {
  const token = getToken();
  if (!token) {
    return false;
  }

  try {
    const response = await fetch('/api/v1/auth/me', {
      method: 'GET',
      headers: {
        'Authorization': `Bearer ${token}`,
        'Content-Type': 'application/json'
      }
    });

    return response.ok;
  } catch (error) {
    console.error('Error validating token:', error);
    return false;
  }
}