<?php
/**
 * Shared function to load full cart payload for an order.
 * Used by setLineItem, setOrderType, getOrCreateCart.
 */

function loadCartPayload(int $OrderID): array {
    $qOrder = queryOne("
        SELECT
            o.ID, o.UUID, o.UserID, o.BusinessID, o.DeliveryMultiplier,
            o.OrderTypeID, o.DeliveryFee, o.StatusID, o.AddressID, o.PaymentID,
            o.Remarks, o.AddedOn, o.LastEditedOn, o.SubmittedOn,
            o.ServicePointID, o.GrantID, o.GrantOwnerBusinessID,
            o.GrantEconomicsType, o.GrantEconomicsValue, o.TabID,
            sp.Name AS ServicePointName,
            COALESCE(b.DeliveryFlatFee, 0) AS BusinessDeliveryFee,
            COALESCE(b.TaxRate, 0) AS TaxRate,
            COALESCE(b.PayfritFee, 0.05) AS PayfritFee
        FROM Orders o
        LEFT JOIN Businesses b ON b.ID = o.BusinessID
        LEFT JOIN ServicePoints sp ON sp.ID = o.ServicePointID
        WHERE o.ID = ?
        LIMIT 1
    ", [$OrderID]);

    if (!$qOrder) {
        return ['OK' => false, 'ERROR' => 'not_found', 'MESSAGE' => 'Order not found', 'DETAIL' => ''];
    }

    $order = [
        'OrderID'              => (int) $qOrder['ID'],
        'UUID'                 => $qOrder['UUID'] ?? '',
        'UserID'               => (int) $qOrder['UserID'],
        'BusinessID'           => (int) $qOrder['BusinessID'],
        'DeliveryMultiplier'   => (float) $qOrder['DeliveryMultiplier'],
        'OrderTypeID'          => (int) $qOrder['OrderTypeID'],
        'DeliveryFee'          => (float) $qOrder['DeliveryFee'],
        'BusinessDeliveryFee'  => (float) $qOrder['BusinessDeliveryFee'],
        'TaxRate'              => (float) $qOrder['TaxRate'],
        'PayfritFee'           => (float) $qOrder['PayfritFee'],
        'StatusID'             => (int) $qOrder['StatusID'],
        'AddressID'            => (int) ($qOrder['AddressID'] ?? 0),
        'PaymentID'            => (int) ($qOrder['PaymentID'] ?? 0),
        'Remarks'              => $qOrder['Remarks'] ?? '',
        'AddedOn'              => $qOrder['AddedOn'],
        'LastEditedOn'         => $qOrder['LastEditedOn'],
        'SubmittedOn'          => $qOrder['SubmittedOn'],
        'ServicePointID'       => (int) ($qOrder['ServicePointID'] ?? 0),
        'ServicePointName'     => $qOrder['ServicePointName'] ?? '',
        'GrantID'              => (int) ($qOrder['GrantID'] ?? 0),
        'GrantOwnerBusinessID' => (int) ($qOrder['GrantOwnerBusinessID'] ?? 0),
        'GrantEconomicsType'   => $qOrder['GrantEconomicsType'] ?? '',
        'GrantEconomicsValue'  => (float) ($qOrder['GrantEconomicsValue'] ?? 0),
        'TabID'                => (int) ($qOrder['TabID'] ?? 0),
    ];

    $qLI = queryTimed("
        SELECT
            oli.ID, oli.ParentOrderLineItemID, oli.OrderID, oli.ItemID,
            oli.StatusID, oli.Price, oli.Quantity, oli.Remark, oli.IsDeleted, oli.AddedOn,
            i.Name, i.ParentItemID, i.IsCheckedByDefault,
            parent.Name AS ItemParentName
        FROM OrderLineItems oli
        INNER JOIN Items i ON i.ID = oli.ItemID
        LEFT JOIN Items parent ON parent.ID = i.ParentItemID
        WHERE oli.OrderID = ?
        ORDER BY oli.ID
    ", [$OrderID]);

    $rows = [];
    foreach ($qLI as $r) {
        $rows[] = [
            'OrderLineItemID'       => (int) $r['ID'],
            'ParentOrderLineItemID' => (int) $r['ParentOrderLineItemID'],
            'OrderID'               => (int) $r['OrderID'],
            'ItemID'                => (int) $r['ItemID'],
            'StatusID'              => (int) $r['StatusID'],
            'Price'                 => (float) $r['Price'],
            'Quantity'              => (int) $r['Quantity'],
            'Remark'                => $r['Remark'] ?? '',
            'IsDeleted'             => (int) $r['IsDeleted'],
            'AddedOn'               => $r['AddedOn'],
            'Name'                  => $r['Name'] ?? '',
            'ParentItemID'          => (int) $r['ParentItemID'],
            'ItemParentName'        => $r['ItemParentName'] ?? '',
            'IsCheckedByDefault'    => (int) $r['IsCheckedByDefault'],
        ];
    }

    return ['OK' => true, 'ERROR' => '', 'ORDER' => $order, 'ORDERLINEITEMS' => $rows];
}