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Frontend API Integration Summary

Overview

The frontend has been fully integrated with the FastAPI backend, implementing complete CRUD operations for all features.

What Was Implemented

1. API Service Layer (src/services/api.js)

  • Centralized API service with all backend endpoints
  • Token management (get, set, remove)
  • Error handling and request formatting
  • Support for all CRUD operations

2. Authentication Context (src/contexts/AuthContext.js)

  • Global authentication state management
  • User session persistence
  • Login, register, logout functions
  • Automatic token refresh and validation

3. Protected Routes (src/components/ProtectedRoute.js)

  • Route protection for dashboard pages
  • Automatic redirect to login if not authenticated
  • Loading states during authentication check

4. Updated Components

Authentication

  • Login (src/components/login.js)

    • Integrated with backend API
    • Error handling and loading states
    • Token storage on successful login

  • Signup (src/components/signup.js)

    • User registration with API
    • Auto-login after registration
    • Form validation

Dashboard

  • Dashboard (src/components/dashboard.js)

    • Displays user information from API
    • Logout functionality
    • Navigation to settings

  • StatsGrid (src/components/StatsGrid.js)

    • Fetches dashboard statistics from API
    • Displays: completed lessons, day streak, overall progress, achievements

  • ModulesGrid (src/components/ModulesGrid.js)

    • Loads module progress from API
    • Displays practice module statistics

Courses & Lessons

  • CourseGrid (src/components/lessons/CourseGrid.js)

    • Fetches all courses from API
    • Displays course information and stats

  • LessonList (src/components/lessons/LessonList.js)

    • Loads lessons for courses
    • Shows user progress status (completed, in-progress, locked)
    • Integrates with progress API

Practice

  • PracticeGrid (src/components/practice/PracticeGrid.js)

    • Loads practice modules from API
    • Displays session counts and accuracy

  • ConversationModal (src/components/practice/ConversationModal.js)

    • Saves practice sessions to API
    • Tracks accuracy and duration

Settings

  • Settings (src/components/settings/Settings.js)
    • Loads user settings from API
    • Updates profile information
    • Changes password
    • Updates notification preferences
    • Deletes account
    • Real-time settings sync

API Endpoints Used

Authentication

  • POST /api/auth/register - User registration
  • POST /api/auth/login - User login
  • GET /api/auth/me - Get current user

Users

  • GET /api/users/me - Get profile
  • PUT /api/users/me - Update profile
  • GET /api/users/me/settings - Get settings
  • PUT /api/users/me/settings - Update settings
  • POST /api/users/me/change-password - Change password
  • DELETE /api/users/me - Delete account

Courses

  • GET /api/courses - Get all courses
  • GET /api/courses/{id} - Get course by ID
  • GET /api/courses/{id}/lessons - Get course lessons

Progress

  • GET /api/progress/dashboard - Dashboard statistics
  • GET /api/progress/lessons - Lesson progress
  • POST /api/progress/lessons - Update lesson progress
  • GET /api/progress/practice - Practice sessions
  • POST /api/progress/practice - Create practice session
  • GET /api/progress/modules - Module progress
  • GET /api/progress/achievements - User achievements

Environment Configuration

Create a .env file in the root directory:

REACT_APP_API_URL=http://localhost:8000

Features

✅ Complete CRUD Operations

  • Create: User registration, practice sessions, progress updates
  • Read: All data loaded from backend (courses, lessons, progress, settings)
  • Update: Profile, settings, password, progress
  • Delete: Account deletion

✅ Authentication & Authorization

  • JWT token-based authentication
  • Protected routes
  • Automatic token management
  • Session persistence

✅ Real-time Data

  • Dashboard stats update from backend
  • Module progress tracking
  • Practice session recording
  • Settings synchronization

✅ Error Handling

  • API error messages displayed to users
  • Loading states during API calls
  • Graceful fallbacks for missing data

✅ User Experience

  • Loading indicators
  • Success/error messages
  • Form validation
  • Automatic redirects

Testing the Integration

  1. Start Backend:

    cd backend
uvicorn main:app --reload --port 8000

  2. Start Frontend:

    npm start

  3. Test Flow:

    • Register a new user at /signup
    • Login at /login
    • View dashboard with real data
    • Browse courses and lessons
    • Practice and see sessions saved
    • Update settings and see changes persist

Next Steps

To enhance the integration further:

  1. Add progress tracking for lessons (mark as completed)
  2. Implement real-time updates using WebSockets
  3. Add file upload for profile pictures
  4. Implement pagination for large data sets
  5. Add caching for frequently accessed data
  6. Implement offline support with service workers

Notes

  • All API calls include authentication tokens automatically
  • Error messages are user-friendly
  • Loading states prevent duplicate requests
  • Data is fetched on component mount
  • Settings auto-save when toggles change