64 lines
1.8 KiB
PHP
64 lines
1.8 KiB
PHP
<?php
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session_start();
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require_once 'db/config.php';
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if (!isset($_SESSION['user_id'])) {
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header('Content-Type: application/json');
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echo json_encode(['success' => false, 'error' => 'Unauthorized']);
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exit;
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}
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$user_id = $_SESSION['user_id'];
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$action = $_POST['action'] ?? '';
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$amount = (float)($_POST['amount'] ?? 0);
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if ($amount <= 0) {
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header('Content-Type: application/json');
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echo json_encode(['success' => false, 'error' => 'Invalid amount']);
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exit;
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}
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try {
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db()->beginTransaction();
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// Fetch current balance
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$stmt = db()->prepare("SELECT balance FROM users WHERE id = ? FOR UPDATE");
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$stmt->execute([$user_id]);
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$user = $stmt->fetch();
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if (!$user) {
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throw new Exception("User not found");
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}
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$current_balance = (float)$user['balance'];
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if ($action === 'add') {
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$new_balance = $current_balance + $amount;
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$stmt = db()->prepare("UPDATE users SET balance = ? WHERE id = ?");
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$stmt->execute([$new_balance, $user_id]);
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// Log transaction (optional but good practice, maybe later)
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db()->commit();
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echo json_encode(['success' => true, 'new_balance' => $new_balance]);
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} elseif ($action === 'withdraw') {
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if ($current_balance < $amount) {
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throw new Exception("Insufficient funds");
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}
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$new_balance = $current_balance - $amount;
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$stmt = db()->prepare("UPDATE users SET balance = ? WHERE id = ?");
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$stmt->execute([$new_balance, $user_id]);
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db()->commit();
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echo json_encode(['success' => true, 'new_balance' => $new_balance]);
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} else {
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throw new Exception("Invalid action");
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}
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} catch (Exception $e) {
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db()->rollBack();
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header('Content-Type: application/json');
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echo json_encode(['success' => false, 'error' => $e->getMessage()]);
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}
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