$currency = sanitize($_GET['currency'] ?? 'BTC');
$amount_crypto = calc_crypto_amount($plan_price, $currency);

if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['create_order'])) {
    $currency = sanitize($_POST['currency'] ?? 'BTC');
    $amount_crypto = calc_crypto_amount($plan_price, $currency);
    
    $expires = date('Y-m-d H:i:s', time() + (PAYMENT_TIMEOUT * 60));
    $wallet = get_wallet($currency);
    
    $stmt = $db->prepare("INSERT INTO orders (user_id, plan_id, amount, currency, payment_address, wallet_address, payment_status, expires_at, created_at) VALUES (?, ?, ?, ?, ?, ?, 'pending', ?, datetime('now'))");
    
    if ($stmt->execute([$user_id, $plan['id'], $amount_crypto, $currency, $wallet, $wallet, $expires])) {
        $order_id = $db->lastInsertId();
        header('Location: /subscribe?order=' . $order_id);
        exit;
    }
    $error = __('error_payment');
}

// View existing order
$order_ref = intval($_GET['order'] ?? 0);
if ($order_ref) {
    $stmt = $db->prepare("SELECT * FROM orders WHERE id = ? AND user_id = ?");
    $stmt->execute([$order_ref, $user_id]);
    $order_data = $stmt->fetch(PDO::FETCH_ASSOC);
    if (!$order_data) { header('Location: /my-account'); exit; }
    
    $time_remaining = strtotime($order_data['expires_at']) - time();
    $plan_name = $plan['name'];
    $currency = $order_data['currency'];
    $amount_crypto = $order_data['amount'];
    $wallet = $order_data['wallet_address'];
}

include __DIR__ . '/includes/header.php';
?>

<section class="subscribe-page">
    <div class="container">
        <?php if ($order_data): ?>
            <div style="text-align:center;margin-bottom:30px">
                <h1><?=__('subscribe_title')?></h1>
                <p style="color:#888"><?=__('subscribe_plan')?>: <?=h($plan_name)?></p>
                <p style="color:#888;font-size:0.85rem">Order #<?=h($order_ref)?></p>
            </div>
            
            <div class="payment-details">
                <div style="text-align:center;margin-bottom:25px">
                    <h3 style="color:#fff;margin-bottom:10px"><?=__('subscribe_payment')?>: <?=h($currency)?></h3>
                    <div class="amount-display"><?=h($amount_crypto)?> <?=h($currency)?></div>
                    <p style="color:#888;font-size:0.85rem">≈ $<?=number_format($plan_price,2)?> USD</p>
                </div>

                <?php if ($time_remaining > 0): ?>
                    <div style="text-align:center">
                        <p style="color:#888;margin-bottom:10px"><?=__('subscribe_time')?></p>
                        <div class="payment-timer">
                            <i class="fas fa-clock"></i> 
                            <span id="paymentTimer" data-end="<?=strtotime($order_data['expires_at'])?>"></span>
                        </div>
                    </div>
                    
                    <div style="text-align:center;margin:20px 0">
                        <label style="color:#888;display:block;margin-bottom:10px"><?=__('subscribe_address')?></label>
                        <div class="wallet-address"><?=h($wallet)?></div>
                        <button class="copy-wallet" data-clipboard="<?=h($wallet)?>">
                            <i class="fas fa-copy"></i> <?=__('subscribe_copy')?>
                        </button>
                    </div>

                    <div id="paymentActions" style="text-align:center;margin-top:30px">
                        <button id="verifyPayment" data-order="<?=h($order_ref)?>" class="btn btn-primary btn-glow">
                            <i class="fas fa-check"></i> <?=__('subscribe_verify')?>
                        </button>
                        <p style="color:#666;font-size:0.85rem;margin-top:10px">
                            <i class="fas fa-info-circle"></i> <?=__('subscribe_waiting')?>
                        </p>
                    </div>
                    <div id="paymentExpired" class="hidden" style="text-align:center">
                        <p style="color:#ef4444;font-size:1.1rem"><?=__('subscribe_expired')?></p>
                        <a href="/pricing" class="btn btn-primary" style="margin-top:15px"><?=__('btn_subscribe')?></a>
                    </div>
                    <div id="autoPoll" data-order="<?=h($order_ref)?>"></div>
                <?php else: ?>
                    <div style="text-align:center">
                        <p style="color:#ef4444;font-size:1.2rem;font-weight:600"><?=__('subscribe_expired')?></p>
                        <a href="/pricing" class="btn btn-primary" style="margin-top:20px"><?=__('btn_subscribe')?></a>
                    </div>
                <?php endif; ?>
            </div>

            <div style="margin-top:20px;padding:20px;background:rgba(251,191,36,0.05);border:1px solid rgba(251,191,36,0.2);border-radius:12px;font-size:0.85rem;color:#fbbf24">
                <i class="fas fa-exclamation-triangle"></i> 
                <?php if ($time_remaining > 0): ?>
                    You have <strong id="remainingText"><?=ceil($time_remaining/60)?></strong> minutes to complete payment. 
                <?php endif; ?>
                If payment is not received within the time limit, the order expires. 
                Payments received after expiry will NOT be refunded automatically - contact support for assistance.
                Please send the EXACT amount shown above to the wallet address provided.
            </div>

        <?php else: ?>
            <div style="text-align:center;margin-bottom:40px">
                <h1><?=__('subscribe_title')?></h1>
                <p><?=__('subscribe_plan')?>: <strong><?=h($plan['name'])?> — $<?=number_format($plan_price,2)?></strong></p>
                <?php if ($error): ?><div class="alert alert-error"><?=h($error)?></div><?php endif; ?>
            </div>

            <form method="POST" style="max-width:400px;margin:0 auto;background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.06);border-radius:20px;padding:40px">
                <div class="form-group">
                    <label><?=__('subscribe_payment')?></label>
                    <select name="currency">
                        <option value="BTC">Bitcoin (BTC)</option>
                        <option value="ETH">Ethereum (ETH)</option>
                        <option value="USDT">Tether (USDT - TRC20)</option>
                        <option value="LTC">Litecoin (LTC)</option>
                    </select>
                </div>
                <button type="submit" name="create_order" class="btn btn-primary btn-full">
                    <i class="fas fa-credit-card"></i> <?=__('btn_subscribe')?>
                </button>
            </form>
        <?php endif; ?>
    </div>
</section>

<style>.hidden { display: none !important; }</style>

<?php include __DIR__ . '/includes/footer.php'; ?>