<?php
require_once __DIR__ . '/../helpers.php';
require_once __DIR__ . '/../config/stripe.php';
runAuth();

try {
    $data = readJsonBody();
    $tabID = (int) ($data['TabID'] ?? 0);
    $userID = (int) ($data['UserID'] ?? 0);
    $newAuthAmount = (float) ($data['NewAuthAmount'] ?? 0);

    if ($tabID === 0) apiAbort(['OK' => false, 'ERROR' => 'missing_TabID']);
    if ($userID === 0) apiAbort(['OK' => false, 'ERROR' => 'missing_UserID']);
    if ($newAuthAmount <= 0) apiAbort(['OK' => false, 'ERROR' => 'missing_NewAuthAmount']);

    $qTab = queryOne("
        SELECT t.ID, t.OwnerUserID, t.StatusID, t.AuthAmountCents, t.StripePaymentIntentID,
               b.TabMaxAuthAmount
        FROM Tabs t JOIN Businesses b ON b.ID = t.BusinessID
        WHERE t.ID = ? LIMIT 1
    ", [$tabID]);

    if (!$qTab) apiAbort(['OK' => false, 'ERROR' => 'tab_not_found']);
    if ((int) $qTab['StatusID'] !== 1) apiAbort(['OK' => false, 'ERROR' => 'tab_not_open']);
    if ((int) $qTab['OwnerUserID'] !== $userID) apiAbort(['OK' => false, 'ERROR' => 'not_owner']);

    $newAuthCents = round($newAuthAmount * 100);
    $maxCents = round((float) ($qTab['TabMaxAuthAmount'] ?? 0) * 100);

    if ($newAuthCents <= (int) $qTab['AuthAmountCents']) apiAbort(['OK' => false, 'ERROR' => 'not_an_increase', 'MESSAGE' => 'New amount must be higher than current authorization.']);
    if ($maxCents > 0 && $newAuthCents > $maxCents) apiAbort(['OK' => false, 'ERROR' => 'exceeds_max', 'MESSAGE' => "Maximum authorization is \$" . number_format((float) $qTab['TabMaxAuthAmount'], 2) . "."]);

    // Update Stripe PI amount
    $updateData = stripeRequest('POST', "https://api.stripe.com/v1/payment_intents/{$qTab['StripePaymentIntentID']}", [
        'amount' => $newAuthCents,
    ]);

    if (isset($updateData['id']) && (int) ($updateData['amount'] ?? 0) === $newAuthCents) {
        queryTimed("UPDATE Tabs SET AuthAmountCents = ? WHERE ID = ?", [$newAuthCents, $tabID]);
        jsonResponse([
            'OK' => true,
            'AUTH_AMOUNT_CENTS' => $newAuthCents,
            'PREVIOUS_AUTH_CENTS' => (int) $qTab['AuthAmountCents'],
        ]);
    } else {
        $errMsg = $updateData['error']['message'] ?? 'Authorization increase declined';
        apiAbort(['OK' => false, 'ERROR' => 'increase_declined', 'MESSAGE' => $errMsg, 'CURRENT_AUTH_CENTS' => (int) $qTab['AuthAmountCents']]);
    }

} catch (Exception $e) {
    jsonResponse(['OK' => false, 'ERROR' => 'server_error', 'MESSAGE' => $e->getMessage()]);
}