<?php
include 'db.php';

$confirm = $_POST['confirm'] ?? '';

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    // First confirmation
    if ($confirm === 'start') {
        ?>
        <h2>?? Confirm: Clear ALL Customer Accounts</h2>
        <p>This will begin the process of clearing <strong>all</strong> customer transaction records.</p>
        <form method="post" action="clear_all.php">
            <input type="hidden" name="confirm" value="final">
            <input type="submit" value="? Yes, Continue">
            <a href="index.php">Cancel</a>
        </form>
        <?php
        exit;
    }

    // Final confirmation
    if ($confirm === 'final') {
        ?>
        <h2>?? Final Warning</h2>
        <p>This will <strong>permanently delete all transactions</strong> for <u>every customer</u>. Are you absolutely sure?</p>
        <form method="post" action="clear_all.php">
            <input type="hidden" name="confirm" value="yes">
            <input type="submit" value="?? Yes, DELETE ALL">
            <a href="index.php">Cancel</a>
        </form>
        <?php
        exit;
    }

    // Perform delete
    if ($confirm === 'yes') {
        $conn->query("DELETE FROM transactions");
        echo "<h3>? All customer tabs have been cleared.</h3>";
        echo "<p><a href='index.php'>Back to Dashboard</a></p>";
        exit;
    }
}

echo "Invalid request.";