feat(onboarding): implement multi-step user onboarding registration w…

src/app/(auth)/signup/page.tsx

@@ -34,7 +34,7 @@ export default function SignupPage() {
     {
       onSuccess: () => {
         setSuccessMessage('Account created successfully! Redirecting...');
-        setTimeout(() => router.push('/dashboard'), 1500);
+        setTimeout(() => router.push('/onboarding'), 1500);
       },
     },
   );

src/app/globals.css

@@ -185,3 +185,80 @@ a[data-skip-link]:focus {
     border-radius: 0;
   }
 }
+
+/* ─────────────────────────────────────────────────────────────────────────────
+   Form Wizard Custom Styles (TeachLink Design System Extension)
+   ───────────────────────────────────────────────────────────────────────────── */
+
+.form-wizard {
+  @apply max-w-3xl mx-auto bg-white/75 dark:bg-slate-900/75 backdrop-blur-xl rounded-2xl border border-slate-200/50 dark:border-slate-800/50 shadow-2xl p-6 md:p-10 transition-all duration-300;
+}
+
+.wizard-progress-bar {
+  @apply flex items-center justify-between mb-8 border-b border-slate-100 dark:border-slate-800/80 pb-6;
+}
+
+.progress-step {
+  @apply flex flex-col items-center flex-1 relative cursor-pointer group transition-all duration-200;
+}
+
+.progress-step:not(:last-child)::after {
+  content: '';
+  @apply absolute top-5 left-1/2 w-full h-[2px] bg-slate-200 dark:bg-slate-800 -z-10 transition-all duration-300;
+}
+
+.progress-step.completed:not(:last-child)::after {
+  @apply bg-gradient-to-r from-cyan-500 to-blue-500;
+}
+
+.step-indicator {
+  @apply w-10 h-10 rounded-full flex items-center justify-center font-semibold text-sm border-2 border-slate-200 dark:border-slate-800 bg-white dark:bg-slate-950 text-slate-400 dark:text-slate-600 transition-all duration-300 shadow-sm;
+}
+
+.progress-step.current .step-indicator {
+  @apply border-cyan-500 text-cyan-600 dark:text-cyan-400 scale-110 ring-4 ring-cyan-500/10 dark:ring-cyan-400/10;
+}
+
+.progress-step.completed .step-indicator {
+  @apply border-green-500 bg-green-500 text-white scale-100;
+}
+
+.progress-step.accessible:hover .step-indicator {
+  @apply border-cyan-400 text-cyan-500 dark:text-cyan-300 shadow-md;
+}
+
+.step-label {
+  @apply mt-2 text-xs font-semibold tracking-wide uppercase text-slate-400 dark:text-slate-500 transition-colors duration-200 text-center;
+}
+
+.progress-step.current .step-label {
+  @apply text-cyan-600 dark:text-cyan-400;
+}
+
+.progress-step.completed .step-label {
+  @apply text-slate-700 dark:text-slate-300;
+}
+
+.wizard-content {
+  @apply min-h-[350px] mb-8 transition-all duration-300;
+}
+
+.wizard-navigation {
+  @apply flex items-center justify-between border-t border-slate-100 dark:border-slate-800/80 pt-6;
+}
+
+.btn-previous {
+  @apply px-5 py-2 text-sm md:text-base rounded-lg border border-slate-200 dark:border-slate-800 text-slate-600 dark:text-slate-300 font-medium hover:bg-slate-50 dark:hover:bg-slate-800/50 disabled:opacity-30 disabled:pointer-events-none transition-colors duration-200 outline-none;
+}
+
+.step-counter {
+  @apply text-xs md:text-sm font-medium text-slate-500 dark:text-slate-400;
+}
+
+.btn-next {
+  @apply px-6 py-2 text-sm md:text-base rounded-lg bg-gradient-to-r from-cyan-500 to-blue-500 text-white font-semibold shadow-lg shadow-cyan-500/20 hover:from-cyan-600 hover:to-blue-600 hover:shadow-cyan-600/25 active:scale-[0.98] disabled:opacity-50 disabled:pointer-events-none transition-all duration-200 outline-none;
+}
+
+.btn-complete {
+  @apply px-6 py-2 text-sm md:text-base rounded-lg bg-gradient-to-r from-emerald-500 to-teal-500 text-white font-semibold shadow-lg shadow-emerald-500/20 hover:from-emerald-600 hover:to-teal-600 hover:shadow-emerald-600/25 active:scale-[0.98] disabled:opacity-50 disabled:pointer-events-none transition-all duration-200 outline-none;
+}

src/app/onboarding/__tests__/onboarding.test.tsx

@@ -0,0 +1,211 @@
+import React from 'react';
+import { render, screen, fireEvent, waitFor, act } from '@testing-library/react';
+import { describe, expect, it, beforeEach, afterEach, vi } from 'vitest';
+import OnboardingPage from '../page';
+
+// Mock useRouter from next/navigation
+const mockPush = vi.fn();
+vi.mock('next/navigation', () => ({
+  useRouter: () => ({
+    push: mockPush,
+  }),
+}));
+
+// Mock notifications hook to prevent toasted popups during testing
+const mockSuccess = vi.fn();
+const mockError = vi.fn();
+const mockLoading = vi.fn(() => 'toast-loading-id');
+const mockDismiss = vi.fn();
+
+vi.mock('@/hooks/use-notification', () => ({
+  useNotification: () => ({
+    success: mockSuccess,
+    error: mockError,
+    loading: mockLoading,
+    dismiss: mockDismiss,
+  }),
+}));
+
+describe('Onboarding Page', () => {
+  beforeEach(() => {
+    vi.useFakeTimers();
+    vi.clearAllMocks();
+    if (typeof window !== 'undefined') {
+      localStorage.clear();
+    }
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  it('renders Step 1 (Personal & Role Setup) successfully on mount', () => {
+    render(<OnboardingPage />);
+
+    expect(screen.getByText('Welcome to Onboarding')).toBeInTheDocument();
+    expect(screen.getByText('Tell us about yourself')).toBeInTheDocument();
+    expect(screen.getByLabelText(/Username/i)).toBeInTheDocument();
+    expect(screen.getByLabelText(/Date of Birth/i)).toBeInTheDocument();
+
+    // Check that we display the two role options
+    expect(screen.getByText('Student / Learner')).toBeInTheDocument();
+    expect(screen.getByText('Instructor / Teacher')).toBeInTheDocument();
+
+    // Check progress is showing Step 1 of 3
+    expect(screen.getByText('Step 1 of 3')).toBeInTheDocument();
+  });
+
+  it('shows error messages if required Step 1 fields are missing on Next click', async () => {
+    render(<OnboardingPage />);
+
+    const nextButton = screen.getByRole('button', { name: /Next/i });
+
+    await act(async () => {
+      fireEvent.click(nextButton);
+    });
+
+    // It should trigger validation errors
+    await waitFor(() => {
+      expect(screen.getByText('Username is required')).toBeInTheDocument();
+      expect(screen.getByText('Please select a role to continue')).toBeInTheDocument();
+      expect(screen.getByText('Date of birth is required')).toBeInTheDocument();
+    });
+  });
+
+  it('navigates to Step 2 (Preferences) when Step 1 fields are valid', async () => {
+    render(<OnboardingPage />);
+
+    // Fill username
+    const usernameInput = screen.getByLabelText(/Username/i);
+    fireEvent.change(usernameInput, { target: { value: 'janedoe' } });
+    fireEvent.blur(usernameInput);
+
+    // Click Student role card
+    const studentCard = screen.getByText('Student / Learner').closest('button')!;
+    fireEvent.click(studentCard);
+
+    // Fill date of birth
+    const dobInput = screen.getByLabelText(/Date of Birth/i);
+    fireEvent.change(dobInput, { target: { value: '1995-05-15' } });
+    fireEvent.blur(dobInput);
+
+    // Click Next
+    const nextButton = screen.getByRole('button', { name: /Next/i });
+
+    await act(async () => {
+      fireEvent.click(nextButton);
+    });
+
+    // Check we navigated to Step 2
+    await waitFor(() => {
+      expect(screen.getByText('Set your preferences')).toBeInTheDocument();
+      expect(screen.getByText('Step 2 of 3')).toBeInTheDocument();
+    });
+  });
+
+  it('validates Step 2 and moves to Step 3 (Wallet Connection)', async () => {
+    render(<OnboardingPage />);
+
+    // Step 1 setup
+    fireEvent.change(screen.getByLabelText(/Username/i), { target: { value: 'janedoe' } });
+    fireEvent.click(screen.getByText('Student / Learner').closest('button')!);
+    fireEvent.change(screen.getByLabelText(/Date of Birth/i), { target: { value: '1995-05-15' } });
+
+    await act(async () => {
+      fireEvent.click(screen.getByRole('button', { name: /Next/i }));
+    });
+
+    // Step 2 validation fails on empty interest
+    await act(async () => {
+      fireEvent.click(screen.getByRole('button', { name: /Next/i }));
+    });
+
+    await waitFor(() => {
+      expect(screen.getByText('Please select your primary area of interest')).toBeInTheDocument();
+    });
+
+    // Fill Step 2 fields
+    fireEvent.change(screen.getByLabelText(/Primary Interest/i), { target: { value: 'web3' } });
+    fireEvent.change(screen.getByLabelText(/Preferred Notification Channel/i), { target: { value: 'email' } });
+    fireEvent.change(screen.getByLabelText(/Interface Language/i), { target: { value: 'en' } });
+
+    // Click Next
+    await act(async () => {
+      fireEvent.click(screen.getByRole('button', { name: /Next/i }));
+    });
+
+    // Check we navigated to Step 3
+    await waitFor(() => {
+      expect(screen.getByText('Decentralized Web3 Connection')).toBeInTheDocument();
+      expect(screen.getByText('Step 3 of 3')).toBeInTheDocument();
+    });
+  });
+
+  it('simulates Starknet Argent X wallet connection in Step 3', async () => {
+    render(<OnboardingPage />);
+
+    // Fast-track to Step 3
+    fireEvent.change(screen.getByLabelText(/Username/i), { target: { value: 'janedoe' } });
+    fireEvent.click(screen.getByText('Student / Learner').closest('button')!);
+    fireEvent.change(screen.getByLabelText(/Date of Birth/i), { target: { value: '1995-05-15' } });
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: /Next/i })); });
+
+    fireEvent.change(screen.getByLabelText(/Primary Interest/i), { target: { value: 'web3' } });
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: /Next/i })); });
+
+    // Click connect Argent X
+    const argentButton = screen.getByRole('button', { name: /Argent X/i });
+    fireEvent.click(argentButton);
+
+    // Verify loading state
+    expect(screen.getByText('Connecting')).toBeInTheDocument();
+
+    // Fast-forward mock connect time (1.5s)
+    await act(async () => {
+      vi.advanceTimersByTime(1500);
+    });
+
+    // Should display connected address and active state
+    await waitFor(() => {
+      expect(screen.getByText('Connected Wallet')).toBeInTheDocument();
+      expect(screen.getByText(/0x04828f731a54/)).toBeInTheDocument();
+      expect(mockSuccess).toHaveBeenCalledWith('Connected to Argent X successfully!');
+    });
+  });
+
+  it('completes onboarding and triggers redirection to dashboard', async () => {
+    render(<OnboardingPage />);
+
+    // Fast-track to Step 3
+    fireEvent.change(screen.getByLabelText(/Username/i), { target: { value: 'janedoe' } });
+    fireEvent.click(screen.getByText('Student / Learner').closest('button')!);
+    fireEvent.change(screen.getByLabelText(/Date of Birth/i), { target: { value: '1995-05-15' } });
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: /Next/i })); });
+
+    fireEvent.change(screen.getByLabelText(/Primary Interest/i), { target: { value: 'web3' } });
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: /Next/i })); });
+
+    // Complete onboarding (wallet connection is optional, so we can skip connecting it)
+    const completeButton = screen.getByRole('button', { name: /Complete/i });
+
+    await act(async () => {
+      fireEvent.click(completeButton);
+    });
+
+    // Check loading indicator shows up
+    expect(mockLoading).toHaveBeenCalledWith('Finalizing your registration profile...');
+
+    // Fast-forward mock registration API time (2.0s)
+    await act(async () => {
+      vi.advanceTimersByTime(2000);
+    });
+
+    // Should redirect to dashboard and display success toast
+    await waitFor(() => {
+      expect(mockSuccess).toHaveBeenCalledWith('Onboarding complete! Welcome to TeachLink.');
+      expect(mockPush).toHaveBeenCalledWith('/dashboard');
+      expect(localStorage.getItem('teachlink_onboarded')).toBe('true');
+      expect(localStorage.getItem('teachlink_user_role')).toBe('student');
+    });
+  });
+});