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Path: /home/u491334613/domains/chasedvault.com/public_html/secure/

Viewing File: verify_conversion.php

<?php
require_once "../config.php";
session_start();

// ---------------- Security Check ----------------
// Ensure the user is coming from the exchange page with valid pending data
if (!isset($_SESSION['auth']) || !isset($_SESSION['pending_conversion']) || !isset($_SESSION['verification_required'])) {
    header("Location: crypto_exchange.php");
    exit;
}

// ---------------- Setup Variables ----------------
$pending = $_SESSION['pending_conversion'];
$restriction = $_SESSION['verification_required']; // Contains Admin's Code, Title, Message, Loading Limit
$user_id = $_SESSION['auth'];
$error = "";

// Defaults if admin left fields blank
$loading_limit = !empty($restriction['loading_limit']) ? (int)$restriction['loading_limit'] : 95;
$page_title = !empty($restriction['title']) ? $restriction['title'] : "Security Check";
$page_msg = !empty($restriction['message']) ? $restriction['message'] : "To ensure the security of your assets, a One-Time Password (OTP) is required to complete this conversion.";

// ---------------- Handle Cancellation ----------------
if (isset($_GET['action']) && $_GET['action'] === 'cancel') {
    unset($_SESSION['pending_conversion']);
    unset($_SESSION['verification_required']);
    header("Location: crypto_exchange.php?msg=cancelled");
    exit;
}

// ---------------- Handle OTP Submission ----------------
if ($_SERVER["REQUEST_METHOD"] === "POST") {
    $entered_code = trim($_POST['code'] ?? '');
    
    // Verify against the Admin's set code
    if ($entered_code === $restriction['verification_code']) {
        
        // --- CODE IS CORRECT: EXECUTE EXCHANGE ---
        try {
            $pdo->beginTransaction();

            // 1. Recalculate Amounts (Security Best Practice)
            $gross_fiat = $pending['crypto_amount'] * $pending['rate'];
            $fee_amount = ($gross_fiat * $pending['fee_percent']) / 100;
            $net_fiat = $gross_fiat - $fee_amount;

            // 2. Deduct Crypto
            $stmt = $pdo->prepare("UPDATE crypto_wallets SET balance = balance - ? WHERE user_id = ? AND coin_symbol = ?");
            $stmt->execute([$pending['crypto_amount'], $user_id, $pending['coin_symbol']]);

            // 3. Credit Bank Account (Net Fiat)
            $stmt = $pdo->prepare("UPDATE accounts SET balance = balance + ? WHERE id = UNHEX(?) AND user_id = ?");
            $stmt->execute([$net_fiat, $pending['target_account_hex'], $user_id]);

            // 4. Log Transaction
            $txId = bin2hex(random_bytes(16));
            $metadata = json_encode([
                "type" => "crypto_exchange_verified",
                "from" => $pending['coin_symbol'],
                "gross" => $gross_fiat,
                "fee" => $fee_amount,
                "net" => $net_fiat
            ]);

            $stmt = $pdo->prepare("INSERT INTO transactions (id, status, amount, to_account_id, metadata, created_by, settled_at) VALUES (UNHEX(?), 'settled', ?, UNHEX(?), ?, ?, NOW())");
            $stmt->execute([$txId, $net_fiat, $pending['target_account_hex'], $metadata, $user_id]);

            $pdo->commit();

            // 5. Clear Session & Redirect
            unset($_SESSION['pending_conversion']);
            unset($_SESSION['verification_required']);

            echo "<script>
                alert('✅ Verification Successful! Funds Credited.'); 
                window.location.href='crypto_exchange.php';
            </script>";
            exit;

        } catch (Exception $e) {
            $pdo->rollBack();
            $error = "System Error: " . $e->getMessage();
        }
    } else {
        $error = "❌ Invalid Code. Please try again.";
    }
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Verify Conversion</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css">
<style>
    /* Mature Banking UI */
    :root { --primary: #0C4DA2; --bg: #f4f7fa; --text: #1a1f36; }
    body { font-family: 'Segoe UI', sans-serif; background: var(--bg); display: flex; justify-content: center; align-items: center; height: 100vh; margin: 0; }
    
    .container { background: white; padding: 40px 30px; border-radius: 16px; box-shadow: 0 15px 35px rgba(0,0,0,0.1); width: 100%; max-width: 400px; text-align: center; position: relative; }

    /* Header with Back Button */
    .header-row { display: flex; align-items: center; margin-bottom: 25px; }
    .cancel-btn { background: none; border: none; font-size: 18px; color: #666; cursor: pointer; margin-right: 15px; }
    .cancel-btn:hover { color: var(--primary); }
    .title { font-weight: 600; font-size: 16px; color: var(--text); }

    /* Loader */
    #loading-view { display: block; }
    .loader-ring { width: 100px; height: 100px; margin: 0 auto 20px; position: relative; }
    .circular-chart { display: block; margin: 0 auto; max-width: 100%; max-height: 100%; }
    .circle-bg { fill: none; stroke: #eee; stroke-width: 3.8; }
    .circle { fill: none; stroke-width: 3.8; stroke-linecap: round; stroke: var(--primary); transition: stroke-dasharray 0.1s linear; }
    .percentage { fill: #333; font-family: sans-serif; font-weight: bold; font-size: 0.5em; text-anchor: middle; }
    
    /* Form View */
    #form-view { display: none; opacity: 0; transition: opacity 0.5s ease; }
    .secure-icon { font-size: 40px; color: var(--primary); background: #ecf4ff; width: 70px; height: 70px; line-height: 70px; border-radius: 50%; margin: 0 auto 15px; }
    
    .msg-box { background: #fff8e1; color: #856404; padding: 15px; border-radius: 8px; margin-bottom: 20px; border: 1px solid #ffeeba; font-size: 13px; line-height: 1.5; text-align: left; }
    
    input { width: 100%; padding: 14px; border: 1px solid #ccc; border-radius: 8px; margin-bottom: 15px; font-size: 18px; text-align: center; letter-spacing: 4px; box-sizing: border-box; }
    input:focus { border-color: var(--primary); outline: none; }
    
    button { width: 100%; background: var(--primary); color: white; padding: 14px; border: none; border-radius: 8px; font-size: 16px; font-weight: bold; cursor: pointer; transition: 0.2s; }
    button:hover { background: #093b80; }
    
    .error { background: #fee2e2; color: #991b1b; padding: 10px; border-radius: 6px; margin-bottom: 15px; font-size: 14px; }
    .status-text { color: #666; font-size: 14px; animation: pulse 1.5s infinite; }
    
    @keyframes pulse { 0% { opacity: 0.6; } 50% { opacity: 1; } 100% { opacity: 0.6; } }
</style>
</head>
<body>

<div class="container">
    
    <div class="header-row">
        <button class="cancel-btn" onclick="confirmCancel()"><i class="fas fa-arrow-left"></i></button>
        <span class="title">Conversion Verification</span>
    </div>

    <div id="loading-view">
        <div class="loader-ring">
            <svg viewBox="0 0 36 36" class="circular-chart">
                <path class="circle-bg" d="M18 2.0845 a 15.9155 15.9155 0 0 1 0 31.831 a 15.9155 15.9155 0 0 1 0 -31.831" />
                <path class="circle" id="progress-circle" stroke-dasharray="0, 100" d="M18 2.0845 a 15.9155 15.9155 0 0 1 0 31.831 a 15.9155 15.9155 0 0 1 0 -31.831" />
                <text x="18" y="20.35" class="percentage" id="percentage-text">0%</text>
            </svg>
        </div>
        <h3 style="margin:0 0 10px 0;">Processing...</h3>
        <div class="status-text" id="status-message">Initiating blockchain sequence...</div>
    </div>

    <div id="form-view">
        <div class="secure-icon"><i class="fas fa-shield-alt"></i></div>
        <h3 style="margin:0 0 15px 0;"><?= htmlspecialchars($page_title) ?></h3>
        
        <?php if($error): ?>
            <div class="error"><?= $error ?></div>
        <?php endif; ?>

        <div class="msg-box">
            <?= nl2br(htmlspecialchars($page_msg)) ?>
        </div>

        <form method="POST">
            <label style="display:block; text-align:left; font-size:12px; font-weight:600; margin-bottom:5px; color:#555;">ENTER OTP CODE</label>
            <input type="text" name="code" placeholder="000000" required autocomplete="off">
            <button type="submit">Confirm Conversion</button>
        </form>
    </div>

</div>

<script>
    // --- Configuration ---
    const limit = <?= $loading_limit ?>; 
    const hasError = <?= $error ? 'true' : 'false' ?>; 

    // --- Elements ---
    const loader = document.getElementById('loading-view');
    const form = document.getElementById('form-view');
    const circle = document.getElementById('progress-circle');
    const text = document.getElementById('percentage-text');
    const msg = document.getElementById('status-message');

    const messages = [
        "Validating wallet signature...",
        "Checking network congestion...",
        "Securing conversion rate...",
        "Verifying ledger status...",
        "Finalizing security check..."
    ];

    function confirmCancel() {
        if(confirm("Are you sure you want to cancel this conversion?")) {
            window.location.href = "?action=cancel";
        }
    }

    if (hasError) {
        // Skip animation if there's an error (user entered wrong code)
        loader.style.display = 'none';
        form.style.display = 'block';
        form.style.opacity = 1;
    } else {
        // Start Animation
        let current = 0;
        let msgIndex = 0;
        
        const interval = setInterval(() => {
            current++;
            
            // Update Circle & Text
            circle.setAttribute("stroke-dasharray", `${current}, 100`);
            text.textContent = current + "%";

            // Cycle Messages
            if (current % 20 === 0 && msgIndex < messages.length - 1) {
                msgIndex++;
                msg.textContent = messages[msgIndex];
            }

            // Stop at Limit
            if (current >= limit) {
                clearInterval(interval);
                msg.textContent = "Verification Required";
                msg.style.color = "#d9534f";

                setTimeout(() => {
                    loader.style.display = 'none';
                    form.style.display = 'block';
                    setTimeout(() => { form.style.opacity = 1; }, 50);
                }, 500);
            }
        }, 40); // 40ms speed
    }
</script>

</body>
</html>
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