Add initial frontend auth implementation

frontend/src/App.jsx

@@ -3,14 +3,36 @@ import { MantineProvider, ColorSchemeScript } from '@mantine/core';
 import { Notifications } from '@mantine/notifications';
 import { ModalsProvider } from '@mantine/modals';
 import Layout from './components/Layout';
+import LoginPage from './components/LoginPage';
 import { WorkspaceProvider } from './contexts/WorkspaceContext';
 import { ModalProvider } from './contexts/ModalContext';
+import { AuthProvider, useAuth } from './contexts/AuthContext';
 import '@mantine/core/styles.css';
 import '@mantine/notifications/styles.css';
 import './App.scss';
 
-function AppContent() {
-  return <Layout />;
+function AuthenticatedContent() {
+  const { user, loading, initialized } = useAuth();
+
+  if (!initialized) {
+    return null;
+  }
+
+  if (loading) {
+    return <div>Loading...</div>;
+  }
+
+  if (!user) {
+    return <LoginPage />;
+  }
+
+  return (
+    <WorkspaceProvider>
+      <ModalProvider>
+        <Layout />
+      </ModalProvider>
+    </WorkspaceProvider>
+  );
 }
 
 function App() {
@@ -20,11 +42,9 @@ function App() {
       <MantineProvider defaultColorScheme="light">
         <Notifications />
         <ModalsProvider>
-          <WorkspaceProvider>
-            <ModalProvider>
-              <AppContent />
-            </ModalProvider>
-          </WorkspaceProvider>
+          <AuthProvider>
+            <AuthenticatedContent />
+          </AuthProvider>
         </ModalsProvider>
       </MantineProvider>
     </>

frontend/src/components/LoginPage.jsx

@@ -0,0 +1,66 @@
+import React, { useState } from 'react';
+import {
+  TextInput,
+  PasswordInput,
+  Paper,
+  Title,
+  Container,
+  Button,
+  Text,
+  Stack,
+} from '@mantine/core';
+import { useAuth } from '../contexts/AuthContext';
+
+const LoginPage = () => {
+  const [email, setEmail] = useState('');
+  const [password, setPassword] = useState('');
+  const [loading, setLoading] = useState(false);
+  const { login } = useAuth();
+
+  const handleSubmit = async (e) => {
+    e.preventDefault();
+    setLoading(true);
+    try {
+      await login(email, password);
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  return (
+    <Container size={420} my={40}>
+      <Title ta="center">Welcome to NovaMD</Title>
+      <Text c="dimmed" size="sm" ta="center" mt={5}>
+        Please sign in to continue
+      </Text>
+
+      <Paper withBorder shadow="md" p={30} mt={30} radius="md">
+        <form onSubmit={handleSubmit}>
+          <Stack>
+            <TextInput
+              label="Email"
+              placeholder="your@email.com"
+              required
+              value={email}
+              onChange={(event) => setEmail(event.currentTarget.value)}
+            />
+
+            <PasswordInput
+              label="Password"
+              placeholder="Your password"
+              required
+              value={password}
+              onChange={(event) => setPassword(event.currentTarget.value)}
+            />
+
+            <Button type="submit" loading={loading}>
+              Sign in
+            </Button>
+          </Stack>
+        </form>
+      </Paper>
+    </Container>
+  );
+};
+
+export default LoginPage;

frontend/src/contexts/AuthContext.jsx

@@ -0,0 +1,110 @@
+import React, {
+  createContext,
+  useContext,
+  useState,
+  useCallback,
+  useEffect,
+} from 'react';
+import { notifications } from '@mantine/notifications';
+import * as authApi from '../services/authApi';
+
+const AuthContext = createContext(null);
+
+export const AuthProvider = ({ children }) => {
+  const [user, setUser] = useState(null);
+  const [loading, setLoading] = useState(true);
+  const [initialized, setInitialized] = useState(false);
+
+  // Load user data on mount
+  useEffect(() => {
+    const initializeAuth = async () => {
+      try {
+        const storedToken = localStorage.getItem('accessToken');
+        if (storedToken) {
+          authApi.setAuthToken(storedToken);
+          const userData = await authApi.getCurrentUser();
+          setUser(userData);
+        }
+      } catch (error) {
+        console.error('Failed to initialize auth:', error);
+        localStorage.removeItem('accessToken');
+        authApi.clearAuthToken();
+      } finally {
+        setLoading(false);
+        setInitialized(true);
+      }
+    };
+
+    initializeAuth();
+  }, []);
+
+  const login = useCallback(async (email, password) => {
+    try {
+      const { accessToken, user: userData } = await authApi.login(
+        email,
+        password
+      );
+      localStorage.setItem('accessToken', accessToken);
+      authApi.setAuthToken(accessToken);
+      setUser(userData);
+      notifications.show({
+        title: 'Success',
+        message: 'Logged in successfully',
+        color: 'green',
+      });
+      return true;
+    } catch (error) {
+      console.error('Login failed:', error);
+      notifications.show({
+        title: 'Error',
+        message: error.message || 'Login failed',
+        color: 'red',
+      });
+      return false;
+    }
+  }, []);
+
+  const logout = useCallback(async () => {
+    try {
+      await authApi.logout();
+    } catch (error) {
+      console.error('Logout failed:', error);
+    } finally {
+      localStorage.removeItem('accessToken');
+      authApi.clearAuthToken();
+      setUser(null);
+    }
+  }, []);
+
+  const refreshToken = useCallback(async () => {
+    try {
+      const { accessToken } = await authApi.refreshToken();
+      localStorage.setItem('accessToken', accessToken);
+      authApi.setAuthToken(accessToken);
+      return true;
+    } catch (error) {
+      console.error('Token refresh failed:', error);
+      await logout();
+      return false;
+    }
+  }, [logout]);
+
+  const value = {
+    user,
+    loading,
+    initialized,
+    login,
+    logout,
+    refreshToken,
+  };
+
+  return <AuthContext.Provider value={value}>{children}</AuthContext.Provider>;
+};
+
+export const useAuth = () => {
+  const context = useContext(AuthContext);
+  if (!context) {
+    throw new Error('useAuth must be used within an AuthProvider');
+  }
+  return context;
+};

frontend/src/services/api.js

@@ -1,20 +1,5 @@
-const API_BASE_URL = window.API_BASE_URL;
-
-const apiCall = async (url, options = {}) => {
-  try {
-    const response = await fetch(url, options);
-    if (!response.ok) {
-      const errorData = await response.json().catch(() => null);
-      throw new Error(
-        errorData?.message || `HTTP error! status: ${response.status}`
-      );
-    }
-    return response;
-  } catch (error) {
-    console.error(`API call failed: ${error.message}`);
-    throw error;
-  }
-};
+import { API_BASE_URL } from '../utils/constants';
+import { apiCall } from './authApi';
 
 export const fetchLastWorkspaceId = async () => {
   const response = await apiCall(`${API_BASE_URL}/workspaces/last`);

frontend/src/services/authApi.js

@@ -0,0 +1,97 @@
+import { API_BASE_URL } from '../utils/constants';
+
+let authToken = null;
+
+export const setAuthToken = (token) => {
+  authToken = token;
+};
+
+export const clearAuthToken = () => {
+  authToken = null;
+};
+
+export const getAuthHeaders = () => {
+  const headers = {
+    'Content-Type': 'application/json',
+  };
+
+  if (authToken) {
+    headers['Authorization'] = `Bearer ${authToken}`;
+  }
+
+  return headers;
+};
+
+// Update the existing apiCall function to include auth headers
+export const apiCall = async (url, options = {}) => {
+  try {
+    const headers = {
+      ...getAuthHeaders(),
+      ...options.headers,
+    };
+
+    const response = await fetch(url, {
+      ...options,
+      headers,
+    });
+
+    // Handle 401 responses
+    if (response.status === 401) {
+      const isRefreshEndpoint = url.endsWith('/auth/refresh');
+      if (!isRefreshEndpoint) {
+        // Attempt token refresh and retry the request
+        const refreshSuccess = await refreshToken();
+        if (refreshSuccess) {
+          // Retry the original request with the new token
+          return apiCall(url, options);
+        }
+      }
+      throw new Error('Authentication failed');
+    }
+
+    if (!response.ok) {
+      const errorData = await response.json().catch(() => null);
+      throw new Error(
+        errorData?.message || `HTTP error! status: ${response.status}`
+      );
+    }
+
+    return response;
+  } catch (error) {
+    console.error(`API call failed: ${error.message}`);
+    throw error;
+  }
+};
+
+// Authentication endpoints
+export const login = async (email, password) => {
+  const response = await apiCall(`${API_BASE_URL}/auth/login`, {
+    method: 'POST',
+    body: JSON.stringify({ email, password }),
+  });
+  return response.json();
+};
+
+export const logout = async () => {
+  const sessionId = localStorage.getItem('sessionId');
+  await apiCall(`${API_BASE_URL}/auth/logout`, {
+    method: 'POST',
+    headers: {
+      'X-Session-ID': sessionId,
+    },
+  });
+};
+
+export const refreshToken = async () => {
+  const refreshToken = localStorage.getItem('refreshToken');
+  const response = await apiCall(`${API_BASE_URL}/auth/refresh`, {
+    method: 'POST',
+    body: JSON.stringify({ refreshToken }),
+  });
+  return response.json();
+};
+
+export const getCurrentUser = async () => {
+  const response = await apiCall(`${API_BASE_URL}/auth/me`);
+  return response.json();
+};