feat(auth): implement user authentication and password change functionality

frontend/src/services/authService.ts

@@ -0,0 +1,141 @@
+import { AuthResponse, LoginCredentials, RegisterCredentials, ChangePasswordCredentials } from '../types';
+
+// Base URL for API requests
+const API_URL = '';
+
+// Token key in localStorage
+const TOKEN_KEY = 'mcphub_token';
+
+// Get token from localStorage
+export const getToken = (): string | null => {
+  return localStorage.getItem(TOKEN_KEY);
+};
+
+// Set token in localStorage
+export const setToken = (token: string): void => {
+  localStorage.setItem(TOKEN_KEY, token);
+};
+
+// Remove token from localStorage
+export const removeToken = (): void => {
+  localStorage.removeItem(TOKEN_KEY);
+};
+
+// Login user
+export const login = async (credentials: LoginCredentials): Promise<AuthResponse> => {
+  try {
+    const response = await fetch(`${API_URL}/auth/login`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify(credentials),
+    });
+
+    const data: AuthResponse = await response.json();
+    
+    if (data.success && data.token) {
+      setToken(data.token);
+    }
+    
+    return data;
+  } catch (error) {
+    console.error('Login error:', error);
+    return {
+      success: false,
+      message: 'An error occurred during login',
+    };
+  }
+};
+
+// Register user
+export const register = async (credentials: RegisterCredentials): Promise<AuthResponse> => {
+  try {
+    const response = await fetch(`${API_URL}/auth/register`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify(credentials),
+    });
+
+    const data: AuthResponse = await response.json();
+    
+    if (data.success && data.token) {
+      setToken(data.token);
+    }
+    
+    return data;
+  } catch (error) {
+    console.error('Register error:', error);
+    return {
+      success: false,
+      message: 'An error occurred during registration',
+    };
+  }
+};
+
+// Get current user
+export const getCurrentUser = async (): Promise<AuthResponse> => {
+  const token = getToken();
+  
+  if (!token) {
+    return {
+      success: false,
+      message: 'No authentication token',
+    };
+  }
+  
+  try {
+    const response = await fetch(`${API_URL}/auth/user`, {
+      method: 'GET',
+      headers: {
+        'x-auth-token': token,
+      },
+    });
+
+    return await response.json();
+  } catch (error) {
+    console.error('Get current user error:', error);
+    return {
+      success: false,
+      message: 'An error occurred while fetching user data',
+    };
+  }
+};
+
+// Change password
+export const changePassword = async (credentials: ChangePasswordCredentials): Promise<AuthResponse> => {
+  const token = getToken();
+  
+  if (!token) {
+    return {
+      success: false,
+      message: 'No authentication token',
+    };
+  }
+  
+  try {
+    const response = await fetch(`${API_URL}/auth/change-password`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        'x-auth-token': token,
+      },
+      body: JSON.stringify(credentials),
+    });
+
+    return await response.json();
+  } catch (error) {
+    console.error('Change password error:', error);
+    return {
+      success: false,
+      message: 'An error occurred while changing password',
+    };
+  }
+};
+
+// Logout user
+export const logout = (): void => {
+  removeToken();
+};