EmberLearn/test-frontend-backend.html at main · DanielHashmi/EmberLearn · GitHub

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<!DOCTYPE html>
<html>
<head>
    <title>Test Frontend-Backend Connection</title>
    <style>
        body { font-family: Arial; padding: 20px; background: #f5f5f5; }
        .test { margin: 10px 0; padding: 10px; border-radius: 5px; }
        .success { background: #d4edda; color: #155724; }
        .error { background: #f8d7da; color: #721c24; }
        .info { background: #d1ecf1; color: #0c5460; }
        pre { background: white; padding: 10px; border-radius: 3px; overflow-x: auto; }
        button { padding: 10px 20px; margin: 5px; cursor: pointer; background: #007bff; color: white; border: none; border-radius: 5px; }
        button:hover { background: #0056b3; }
    </style>
</head>
<body>
    <h1>EmberLearn Frontend-Backend Connection Test</h1>

    <button onclick="runAllTests()">Run All Tests</button>
    <button onclick="clearResults()">Clear Results</button>

    <div id="results"></div>

    <script>
        const API_URL = 'http://localhost:8000';
        const results = document.getElementById('results');

        function addResult(title, message, type = 'info', data = null) {
            const div = document.createElement('div');
            div.className = `test ${type}`;
            div.innerHTML = `<strong>${title}</strong><br>${message}`;

            if (data) {
                const pre = document.createElement('pre');
                pre.textContent = JSON.stringify(data, null, 2);
                div.appendChild(pre);
            }

            results.appendChild(div);
        }

        function clearResults() {
            results.innerHTML = '';
        }

        async function testBackendHealth() {
            addResult('Test 1', 'Testing backend health...', 'info');

            try {
                const response = await fetch(`${API_URL}/api/exercises`);

                if (response.ok) {
                    const data = await response.json();
                    addResult(
                        'Test 1: Backend Health',
                        `✓ Backend is running and responding. Found ${data.length} exercises.`,
                        'success',
                        data.slice(0, 1)
                    );
                    return true;
                } else {
                    addResult(
                        'Test 1: Backend Health',
                        `✗ Backend returned error: ${response.status}`,
                        'error'
                    );
                    return false;
                }
            } catch (error) {
                addResult(
                    'Test 1: Backend Health',
                    `✗ Cannot connect to backend: ${error.message}`,
                    'error'
                );
                return false;
            }
        }

        async function testCORS() {
            addResult('Test 2', 'Testing CORS configuration...', 'info');

            try {
                const response = await fetch(`${API_URL}/api/exercises`, {
                    method: 'GET',
                    headers: {
                        'Origin': 'http://localhost:3000'
                    }
                });

                const corsHeader = response.headers.get('Access-Control-Allow-Origin');

                if (corsHeader) {
                    addResult(
                        'Test 2: CORS',
                        `✓ CORS is configured. Allow-Origin: ${corsHeader}`,
                        'success'
                    );
                    return true;
                } else {
                    addResult(
                        'Test 2: CORS',
                        `⚠ CORS header not found. This might cause issues.`,
                        'error'
                    );
                    return false;
                }
            } catch (error) {
                addResult(
                    'Test 2: CORS',
                    `✗ CORS test failed: ${error.message}`,
                    'error'
                );
                return false;
            }
        }

        async function testAuthentication() {
            addResult('Test 3', 'Testing authentication...', 'info');

            // Try to register/login
            const testEmail = `test${Date.now()}@example.com`;
            const testPassword = 'password123';

            try {
                // Try to register
                const registerResponse = await fetch(`${API_URL}/api/auth/register`, {
                    method: 'POST',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify({
                        email: testEmail,
                        password: testPassword,
                        name: 'Test User'
                    })
                });

                if (registerResponse.ok) {
                    const data = await registerResponse.json();
                    localStorage.setItem('token', data.token);
                    addResult(
                        'Test 3: Authentication',
                        `✓ Registration successful. Token saved to localStorage.`,
                        'success',
                        { user: data.user, token: data.token.substring(0, 20) + '...' }
                    );
                    return true;
                } else {
                    const error = await registerResponse.json();
                    addResult(
                        'Test 3: Authentication',
                        `⚠ Registration failed (might already exist): ${error.detail}`,
                        'info'
                    );

                    // Try to login instead
                    const loginResponse = await fetch(`${API_URL}/api/auth/login`, {
                        method: 'POST',
                        headers: { 'Content-Type': 'application/json' },
                        body: JSON.stringify({
                            email: 'test@example.com',
                            password: 'password123'
                        })
                    });

                    if (loginResponse.ok) {
                        const data = await loginResponse.json();
                        localStorage.setItem('token', data.token);
                        addResult(
                            'Test 3: Authentication',
                            `✓ Login successful. Token saved to localStorage.`,
                            'success'
                        );
                        return true;
                    } else {
                        addResult(
                            'Test 3: Authentication',
                            `✗ Both registration and login failed.`,
                            'error'
                        );
                        return false;
                    }
                }
            } catch (error) {
                addResult(
                    'Test 3: Authentication',
                    `✗ Authentication test failed: ${error.message}`,
                    'error'
                );
                return false;
            }
        }

        async function testExercisesWithAuth() {
            addResult('Test 4', 'Testing exercises endpoint with authentication...', 'info');

            const token = localStorage.getItem('token');

            if (!token) {
                addResult(
                    'Test 4: Exercises with Auth',
                    `✗ No token found. Please run Test 3 first.`,
                    'error'
                );
                return false;
            }

            try {
                const response = await fetch(`${API_URL}/api/exercises`, {
                    headers: {
                        'Authorization': `Bearer ${token}`
                    }
                });

                if (response.ok) {
                    const data = await response.json();
                    addResult(
                        'Test 4: Exercises with Auth',
                        `✓ Successfully fetched ${data.length} exercises with authentication.`,
                        'success',
                        data.slice(0, 2)
                    );
                    return true;
                } else {
                    const error = await response.text();
                    addResult(
                        'Test 4: Exercises with Auth',
                        `✗ Failed to fetch exercises: ${error}`,
                        'error'
                    );
                    return false;
                }
            } catch (error) {
                addResult(
                    'Test 4: Exercises with Auth',
                    `✗ Request failed: ${error.message}`,
                    'error'
                );
                return false;
            }
        }

        async function runAllTests() {
            clearResults();
            addResult('Starting Tests', 'Running all connection tests...', 'info');

            const test1 = await testBackendHealth();
            if (!test1) return;

            const test2 = await testCORS();
            const test3 = await testAuthentication();
            const test4 = await testExercisesWithAuth();

            if (test1 && test2 && test3 && test4) {
                addResult(
                    'All Tests Complete',
                    '✓ All tests passed! The frontend can communicate with the backend.',
                    'success'
                );
                addResult(
                    'Next Steps',
                    'Open http://localhost:3000/exercises in your browser. If exercises still don\'t show, check the browser console for errors (F12).',
                    'info'
                );
            } else {
                addResult(
                    'Tests Failed',
                    '✗ Some tests failed. Please fix the issues above.',
                    'error'
                );
            }
        }

        // Auto-run on load
        window.onload = () => {
            addResult('Ready', 'Click "Run All Tests" to start testing.', 'info');
        };
    </script>
</body>
</html>