example.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>TGAuth Integration Example</title>
    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet">
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }

        .container {
            background: white;
            border-radius: 20px;
            padding: 40px;
            max-width: 500px;
            width: 100%;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
        }

        h1 {
            color: #333;
            margin-bottom: 10px;
            font-size: 32px;
        }

        .subtitle {
            color: #666;
            margin-bottom: 30px;
            font-size: 16px;
        }

        .config-section {
            background: #f8f9fa;
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 30px;
        }

        .config-section h3 {
            color: #667eea;
            margin-bottom: 15px;
            font-size: 18px;
        }

        .input-group {
            margin-bottom: 15px;
        }

        .input-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: 600;
            color: #555;
            font-size: 14px;
        }

        .input-group input {
            width: 100%;
            padding: 10px 12px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 14px;
            font-family: 'Courier New', monospace;
        }

        .input-group input:focus {
            outline: none;
            border-color: #667eea;
        }

        .btn {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 14px 32px;
            border: none;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s;
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }

        .btn:hover {
            transform: translateY(-2px);
        }

        .btn:active {
            transform: translateY(0);
        }

        .btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }

        .user-profile {
            display: none;
            text-align: center;
        }

        .user-profile.show {
            display: block;
        }

        .user-profile img {
            width: 120px;
            height: 120px;
            border-radius: 50%;
            margin-bottom: 20px;
            border: 4px solid #667eea;
        }

        .user-profile h2 {
            color: #333;
            margin-bottom: 10px;
        }

        .user-info {
            background: #f8f9fa;
            padding: 20px;
            border-radius: 10px;
            margin: 20px 0;
            text-align: left;
        }

        .user-info-item {
            display: flex;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid #e0e0e0;
        }

        .user-info-item:last-child {
            border-bottom: none;
        }

        .user-info-item strong {
            color: #555;
        }

        .user-info-item span {
            color: #333;
            font-weight: 600;
        }

        .btn-logout {
            background: #dc3545;
            margin-top: 20px;
        }

        .loading {
            display: none;
            text-align: center;
            padding: 20px;
        }

        .loading.show {
            display: block;
        }

        .spinner {
            border: 3px solid #f3f3f3;
            border-top: 3px solid #667eea;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            animation: spin 1s linear infinite;
            margin: 0 auto 15px;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .error {
            background: #f8d7da;
            color: #721c24;
            padding: 12px;
            border-radius: 8px;
            margin-bottom: 20px;
            display: none;
        }

        .error.show {
            display: block;
        }

        .success {
            background: #d4edda;
            color: #155724;
            padding: 12px;
            border-radius: 8px;
            margin-bottom: 20px;
            display: none;
        }

        .success.show {
            display: block;
        }

        .note {
            background: #fff3cd;
            color: #856404;
            padding: 12px;
            border-radius: 8px;
            margin-top: 20px;
            font-size: 14px;
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>🔐 TGAuth Demo</h1>
        <p class="subtitle">Telegram Authentication Integration</p>

        <div id="errorMessage" class="error"></div>
        <div id="successMessage" class="success"></div>

        <!-- Configuration Section -->
        <div id="configSection" class="config-section">
            <h3>⚙️ Configuration</h3>
            <div class="input-group">
                <label for="apiUrl">API URL</label>
                <input type="text" id="apiUrl" placeholder="https://your-app.vercel.app" value="https://your-app.vercel.app">
            </div>
            <div class="input-group">
                <label for="apiKey">API Key</label>
                <input type="text" id="apiKey" placeholder="tgauth_your_api_key_here">
            </div>
            <button class="btn" onclick="saveConfig()">💾 Save Configuration</button>
            <div class="note">
                <strong>Note:</strong> Get your API credentials from the TGAuth dashboard.
            </div>
        </div>

        <!-- Login Section -->
        <div id="loginSection" style="display: none;">
            <button class="btn" onclick="login()">
                <span>🔐 Login with Telegram</span>
            </button>
        </div>

        <!-- Loading Section -->
        <div id="loadingSection" class="loading">
            <div class="spinner"></div>
            <p>Waiting for Telegram authentication...</p>
            <p style="font-size: 14px; color: #666; margin-top: 10px;">
                Please complete the authentication in Telegram
            </p>
        </div>

        <!-- User Profile Section -->
        <div id="userProfile" class="user-profile">
            <img id="userPhoto" src="" alt="Profile Photo">
            <h2 id="userName"></h2>
            <div class="user-info">
                <div class="user-info-item">
                    <strong>User ID:</strong>
                    <span id="userId"></span>
                </div>
                <div class="user-info-item">
                    <strong>Username:</strong>
                    <span id="userUsername"></span>
                </div>
                <div class="user-info-item">
                    <strong>Language:</strong>
                    <span id="userLanguage"></span>
                </div>
                <div class="user-info-item">
                    <strong>Country:</strong>
                    <span id="userCountry"></span>
                </div>
                <div class="user-info-item">
                    <strong>Device:</strong>
                    <span id="userDevice"></span>
                </div>
                <div class="user-info-item">
                    <strong>Browser:</strong>
                    <span id="userBrowser"></span>
                </div>
            </div>
            <button class="btn btn-logout" onclick="logout()">🚪 Logout</button>
        </div>
    </div>

    <script>
        // Configuration
        let API_URL = '';
        let API_KEY = '';
        let pollInterval = null;

        // Load saved config from localStorage
        function loadConfig() {
            const savedUrl = localStorage.getItem('tgauth_api_url');
            const savedKey = localStorage.getItem('tgauth_api_key');
            
            if (savedUrl) {
                document.getElementById('apiUrl').value = savedUrl;
                API_URL = savedUrl;
            }
            
            if (savedKey) {
                document.getElementById('apiKey').value = savedKey;
                API_KEY = savedKey;
            }

            if (API_URL && API_KEY) {
                document.getElementById('configSection').style.display = 'none';
                document.getElementById('loginSection').style.display = 'block';
                checkAuthStatus();
            }
        }

        // Save configuration
        function saveConfig() {
            const url = document.getElementById('apiUrl').value.trim();
            const key = document.getElementById('apiKey').value.trim();

            if (!url || !key) {
                showError('Please fill in both API URL and API Key');
                return;
            }

            API_URL = url;
            API_KEY = key;

            localStorage.setItem('tgauth_api_url', url);
            localStorage.setItem('tgauth_api_key', key);

            showSuccess('Configuration saved successfully!');
            
            setTimeout(() => {
                document.getElementById('configSection').style.display = 'none';
                document.getElementById('loginSection').style.display = 'block';
                checkAuthStatus();
            }, 1000);
        }

        // Check if user is already authenticated
        async function checkAuthStatus() {
            try {
                const response = await fetch(`${API_URL}/auth/status`, {
                    headers: { 'X-API-Key': API_KEY },
                    credentials: 'include'
                });

                const data = await response.json();

                if (data.status === 'authenticated') {
                    showUserProfile(data.user_data);
                }
            } catch (error) {
                console.error('Auth check failed:', error);
            }
        }

        // Login function
        async function login() {
            try {
                hideError();
                hideSuccess();

                const response = await fetch(`${API_URL}/auth/login`, {
                    headers: { 'X-API-Key': API_KEY }
                });

                if (!response.ok) {
                    throw new Error('Failed to initiate login');
                }

                const data = await response.json();

                // Hide login button, show loading
                document.getElementById('loginSection').style.display = 'none';
                document.getElementById('loadingSection').classList.add('show');

                // Open Telegram
                window.location.href = data.telegram_url;

                // Start polling for status
                pollAuthStatus(data.session_hash);
            } catch (error) {
                showError('Login failed: ' + error.message);
                document.getElementById('loginSection').style.display = 'block';
                document.getElementById('loadingSection').classList.remove('show');
            }
        }

        // Poll authentication status
        function pollAuthStatus(hash) {
            let attempts = 0;
            const maxAttempts = 150; // 5 minutes (150 * 2 seconds)

            pollInterval = setInterval(async () => {
                attempts++;

                if (attempts > maxAttempts) {
                    clearInterval(pollInterval);
                    showError('Authentication timeout. Please try again.');
                    document.getElementById('loadingSection').classList.remove('show');
                    document.getElementById('loginSection').style.display = 'block';
                    return;
                }

                try {
                    const response = await fetch(
                        `${API_URL}/auth/check?hash=${hash}`,
                        { headers: { 'X-API-Key': API_KEY } }
                    );

                    const data = await response.json();

                    if (data.status === 'success') {
                        clearInterval(pollInterval);
                        document.getElementById('loadingSection').classList.remove('show');
                        showUserProfile(data.user_data);
                        showSuccess('Authentication successful!');
                    }
                } catch (error) {
                    console.error('Poll error:', error);
                }
            }, 2000);
        }

        // Show user profile
        function showUserProfile(userData) {
            document.getElementById('userPhoto').src = userData.profile_photo;
            document.getElementById('userName').textContent = userData.first_name;
            document.getElementById('userId').textContent = userData.id;
            document.getElementById('userUsername').textContent = userData.username;
            document.getElementById('userLanguage').textContent = userData.language_code;
            document.getElementById('userCountry').textContent = userData.country;
            document.getElementById('userDevice').textContent = userData.device.device_type;
            document.getElementById('userBrowser').textContent = userData.device.browser;

            document.getElementById('loginSection').style.display = 'none';
            document.getElementById('loadingSection').classList.remove('show');
            document.getElementById('userProfile').classList.add('show');
        }

        // Logout function
        async function logout() {
            try {
                await fetch(`${API_URL}/auth/logout`, {
                    method: 'POST',
                    headers: { 'X-API-Key': API_KEY },
                    credentials: 'include'
                });

                document.getElementById('userProfile').classList.remove('show');
                document.getElementById('loginSection').style.display = 'block';
                showSuccess('Logged out successfully!');
            } catch (error) {
                showError('Logout failed: ' + error.message);
            }
        }

        // Show error message
        function showError(message) {
            const errorEl = document.getElementById('errorMessage');
            errorEl.textContent = message;
            errorEl.classList.add('show');
            setTimeout(() => errorEl.classList.remove('show'), 5000);
        }

        // Hide error message
        function hideError() {
            document.getElementById('errorMessage').classList.remove('show');
        }

        // Show success message
        function showSuccess(message) {
            const successEl = document.getElementById('successMessage');
            successEl.textContent = message;
            successEl.classList.add('show');
            setTimeout(() => successEl.classList.remove('show'), 3000);
        }

        // Hide success message
        function hideSuccess() {
            document.getElementById('successMessage').classList.remove('show');
        }

        // Initialize on page load
        window.addEventListener('DOMContentLoaded', loadConfig);

        // Clean up on page unload
        window.addEventListener('beforeunload', () => {
            if (pollInterval) {
                clearInterval(pollInterval);
            }
        });
    </script>
</body>
</html>