<?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);
    $tipPercent = isset($data['TipPercent']) ? (float) $data['TipPercent'] : -1;
    $tipAmount = isset($data['TipAmount']) ? (float) $data['TipAmount'] : -1;

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

    $qTab = queryOne("
        SELECT t.*, b.PayfritFee, b.StripeAccountID, b.StripeOnboardingComplete
        FROM Tabs t JOIN Businesses b ON b.ID = t.BusinessID
        WHERE t.ID = ? LIMIT 1
    ", [$tabID]);

    if (!$qTab) apiAbort(['OK' => false, 'ERROR' => 'tab_not_found']);
    if ((int) $qTab['StatusID'] !== 1) apiAbort(['OK' => false, 'ERROR' => 'tab_not_open', 'MESSAGE' => "Tab is not open (status: {$qTab['StatusID']})."]);

    // Verify: must be tab owner or business employee
    $isTabOwner = (int) $qTab['OwnerUserID'] === $userID;
    if (!$isTabOwner) {
        $qEmp = queryOne("SELECT ID FROM Employees WHERE BusinessID = ? AND UserID = ? AND IsActive = 1 LIMIT 1",
            [$qTab['BusinessID'], $userID]);
        if (!$qEmp) apiAbort(['OK' => false, 'ERROR' => 'not_authorized', 'MESSAGE' => 'Only the tab owner or a business employee can close the tab.']);
    }

    // Reject pending orders
    queryTimed("UPDATE TabOrders SET ApprovalStatus = 'rejected' WHERE TabID = ? AND ApprovalStatus = 'pending'", [$tabID]);

    // Calculate aggregate totals
    $qTotals = queryOne("
        SELECT COALESCE(SUM(SubtotalCents), 0) AS TotalSubtotalCents,
               COALESCE(SUM(TaxCents), 0) AS TotalTaxCents
        FROM TabOrders WHERE TabID = ? AND ApprovalStatus = 'approved'
    ", [$tabID]);

    $totalSubtotalCents = (int) $qTotals['TotalSubtotalCents'];
    $totalTaxCents = (int) $qTotals['TotalTaxCents'];

    // If no orders, just cancel
    if ($totalSubtotalCents === 0) {
        stripeRequest('POST', "https://api.stripe.com/v1/payment_intents/{$qTab['StripePaymentIntentID']}/cancel");
        queryTimed("UPDATE Tabs SET StatusID = 4, ClosedOn = NOW(), PaymentStatus = 'cancelled' WHERE ID = ?", [$tabID]);
        jsonResponse(['OK' => true, 'MESSAGE' => 'Tab cancelled (no orders).', 'FINAL_CAPTURE_CENTS' => 0]);
    }

    // Calculate tip
    $tipCents = 0;
    $tipPct = 0;
    if ($tipPercent >= 0) {
        $tipPct = $tipPercent;
        $tipCents = round($totalSubtotalCents * $tipPercent);
    } elseif ($tipAmount >= 0) {
        $tipCents = round($tipAmount * 100);
        if ($totalSubtotalCents > 0) $tipPct = $tipCents / $totalSubtotalCents;
    }

    // Fee calculation
    $payfritFeeRate = (float) ($qTab['PayfritFee'] ?? 0);
    if ($payfritFeeRate <= 0) apiAbort(['OK' => false, 'ERROR' => 'no_fee_configured', 'MESSAGE' => 'Business PayfritFee not set.']);

    $payfritFeeCents = round($totalSubtotalCents * $payfritFeeRate);
    $totalBeforeCardFeeCents = $totalSubtotalCents + $totalTaxCents + $tipCents + $payfritFeeCents;

    $cardFeeFixedCents = 30;
    $cardFeePercent = 0.029;
    $totalWithCardFeeCents = (int) ceil(($totalBeforeCardFeeCents + $cardFeeFixedCents) / (1 - $cardFeePercent));
    $cardFeeCents = $totalWithCardFeeCents - $totalBeforeCardFeeCents;

    $finalCaptureCents = $totalWithCardFeeCents;
    $applicationFeeCents = $payfritFeeCents * 2;

    // Ensure capture doesn't exceed authorization
    if ($finalCaptureCents > (int) $qTab['AuthAmountCents']) {
        $finalCaptureCents = (int) $qTab['AuthAmountCents'];
        if ($totalWithCardFeeCents > 0) {
            $applicationFeeCents = round($applicationFeeCents * ($finalCaptureCents / $totalWithCardFeeCents));
        }
    }

    // Mark tab as closing
    queryTimed("UPDATE Tabs SET StatusID = 2 WHERE ID = ?", [$tabID]);

    // Capture the PaymentIntent
    $captureParams = [
        'amount_to_capture' => $finalCaptureCents,
        'metadata[type]' => 'tab_close',
        'metadata[tab_id]' => $tabID,
        'metadata[tip_cents]' => $tipCents,
    ];
    if (!empty(trim($qTab['StripeAccountID'] ?? '')) && (int) ($qTab['StripeOnboardingComplete'] ?? 0) === 1) {
        $captureParams['application_fee_amount'] = $applicationFeeCents;
    }

    $captureData = stripeRequest('POST', "https://api.stripe.com/v1/payment_intents/{$qTab['StripePaymentIntentID']}/capture", $captureParams);

    if (($captureData['status'] ?? '') === 'succeeded') {
        queryTimed("
            UPDATE Tabs SET StatusID = 3, ClosedOn = NOW(), CapturedOn = NOW(),
                TipAmountCents = ?, FinalCaptureCents = ?, RunningTotalCents = ?, PaymentStatus = 'captured'
            WHERE ID = ?
        ", [$tipCents, $finalCaptureCents, $totalSubtotalCents + $totalTaxCents, $tabID]);

        queryTimed("
            UPDATE Orders o JOIN TabOrders tbo ON tbo.OrderID = o.ID
            SET o.PaymentStatus = 'paid', o.PaymentCompletedOn = NOW()
            WHERE tbo.TabID = ? AND tbo.ApprovalStatus = 'approved'
        ", [$tabID]);

        queryTimed("UPDATE TabMembers SET StatusID = 3, LeftOn = NOW() WHERE TabID = ? AND StatusID = 1", [$tabID]);

        jsonResponse([
            'OK' => true,
            'FINAL_CAPTURE_CENTS' => $finalCaptureCents,
            'TAB_UUID' => $qTab['UUID'],
            'FEE_BREAKDOWN' => [
                'SUBTOTAL_CENTS' => $totalSubtotalCents,
                'TAX_CENTS' => $totalTaxCents,
                'TIP_CENTS' => $tipCents,
                'TIP_PERCENT' => $tipPct,
                'PAYFRIT_FEE_CENTS' => $payfritFeeCents,
                'CARD_FEE_CENTS' => $cardFeeCents,
                'TOTAL_CENTS' => $finalCaptureCents,
            ],
        ]);
    } else {
        $errMsg = $captureData['error']['message'] ?? 'Capture failed';
        queryTimed("UPDATE Tabs SET PaymentStatus = 'capture_failed', PaymentError = ? WHERE ID = ?", [$errMsg, $tabID]);
        apiAbort(['OK' => false, 'ERROR' => 'capture_failed', 'MESSAGE' => $errMsg]);
    }

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