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

/**
 * Get full task details including order, customer, beacon info
 * POST: { TaskID: int }
 */

$data = readJsonBody();
$taskID = (int) ($data['TaskID'] ?? 0);

if ($taskID <= 0) {
    apiAbort(['OK' => false, 'ERROR' => 'missing_params', 'MESSAGE' => 'TaskID is required.']);
}

try {
    $qTask = queryOne("
        SELECT
          t.ID AS TaskID,
          t.BusinessID,
          t.OrderID,
          t.TaskTypeID,
          t.CreatedOn,
          t.ClaimedByUserID,
          t.ServicePointID AS TaskServicePointID,
          tt.Name AS TaskTypeName,
          tt.Color AS TaskTypeColor,
          o.ID AS OID,
          o.UUID AS OrderUUID,
          o.UserID AS OrderUserID,
          o.OrderTypeID,
          o.StatusID AS OrderStatusID,
          o.ServicePointID AS OrderServicePointID,
          o.Remarks,
          o.SubmittedOn,
          o.TipAmount,
          o.DeliveryFee,
          b.TaxRate,
          b.PayfritFee,
          COALESCE(sp.Name, tsp.Name) AS ServicePointName,
          COALESCE(sp.TypeID, tsp.TypeID) AS ServicePointTypeID,
          COALESCE(sp.ID, tsp.ID) AS ServicePointID,
          u.ID AS CustomerUserID,
          u.FirstName,
          u.LastName,
          u.ContactNumber,
          u.ImageExtension AS CustomerImageExtension
        FROM Tasks t
        LEFT JOIN tt_TaskTypes tt ON tt.ID = t.TaskTypeID
        LEFT JOIN Orders o ON o.ID = t.OrderID
        LEFT JOIN Businesses b ON b.ID = t.BusinessID
        LEFT JOIN ServicePoints sp ON sp.ID = o.ServicePointID
        LEFT JOIN ServicePoints tsp ON tsp.ID = t.ServicePointID
        LEFT JOIN Users u ON u.ID = COALESCE(NULLIF(o.UserID, 0), NULLIF(t.UserID, 0))
        WHERE t.ID = ?
    ", [$taskID]);

    if (!$qTask) {
        apiAbort(['OK' => false, 'ERROR' => 'not_found', 'MESSAGE' => 'Task not found.']);
    }

    $taskTitle = ((int) ($qTask['OrderID'] ?? 0) > 0)
        ? "Order #" . $qTask['OrderID']
        : "Task #" . $qTask['TaskID'];

    // Check if user photo file exists
    $customerPhotoUrl = '';
    $customerUserID = (int) ($qTask['CustomerUserID'] ?? 0);
    if ($customerUserID > 0) {
        $baseDir = '/uploads/users/';
        foreach (['jpg', 'png', 'PNG'] as $ext) {
            $checkPath = luceeWebroot() . $baseDir . $customerUserID . '.' . $ext;
            if (file_exists($checkPath)) {
                $customerPhotoUrl = baseUrl() . $baseDir . $customerUserID . '.' . $ext;
                break;
            }
        }
    }

    $result = [
        'TaskID' => (int) $qTask['TaskID'],
        'TaskBusinessID' => (int) $qTask['BusinessID'],
        'TaskTypeID' => (int) ($qTask['TaskTypeID'] ?? 1),
        'TaskTypeName' => $qTask['TaskTypeName'] ?? '',
        'TaskTypeColor' => !empty(trim($qTask['TaskTypeColor'] ?? '')) ? $qTask['TaskTypeColor'] : '#9C27B0',
        'TaskTitle' => $taskTitle,
        'TaskCreatedOn' => toISO8601($qTask['CreatedOn']),
        'TaskStatusID' => (int) $qTask['ClaimedByUserID'] > 0 ? 1 : 0,
        'OrderID' => (int) ($qTask['OrderID'] ?? 0),
        'OrderRemarks' => $qTask['Remarks'] ?? '',
        'OrderSubmittedOn' => toISO8601($qTask['SubmittedOn'] ?? ''),
        'OrderTotal' => 0,
        'OrderTotalCents' => 0,
        'ServicePointID' => (int) ($qTask['ServicePointID'] ?? 0),
        'ServicePointName' => $qTask['ServicePointName'] ?? '',
        'ServicePointTypeID' => (int) ($qTask['ServicePointTypeID'] ?? 0),
        'DeliveryAddress' => '',
        'DeliveryLat' => 0,
        'DeliveryLng' => 0,
        'CustomerUserID' => $customerUserID,
        'CustomerFirstName' => $qTask['FirstName'] ?? '',
        'CustomerLastName' => $qTask['LastName'] ?? '',
        'CustomerPhone' => $qTask['ContactNumber'] ?? '',
        'CustomerPhotoUrl' => $customerPhotoUrl,
        'BeaconUUID' => '',
        'BeaconMajor' => 0,
        'BeaconMinor' => 0,
        'LineItems' => [],
        'TableMembers' => [],
    ];

    // Get beacon sharding info
    $spID = (int) ($qTask['ServicePointID'] ?? 0);
    if ($spID > 0) {
        $qBeacon = queryOne("
            SELECT bs.UUID AS ShardUUID, b.BeaconMajor, sp.BeaconMinor
            FROM ServicePoints sp
            JOIN Businesses b ON b.ID = sp.BusinessID
            JOIN BeaconShards bs ON bs.ID = b.BeaconShardID
            WHERE sp.ID = ? AND bs.IsActive = 1
            LIMIT 1
        ", [$spID]);
        if ($qBeacon) {
            $result['BeaconUUID'] = $qBeacon['ShardUUID'];
            $result['BeaconMajor'] = (int) $qBeacon['BeaconMajor'];
            $result['BeaconMinor'] = (int) $qBeacon['BeaconMinor'];
        }
    }

    // Get order line items if there's an order
    if ((int) ($qTask['OrderID'] ?? 0) > 0) {
        $qLineItems = queryTimed("
            SELECT
              oli.ID AS OrderLineItemID,
              oli.ParentOrderLineItemID,
              oli.ItemID,
              oli.Price AS LineItemPrice,
              oli.Quantity,
              oli.Remark,
              i.ID AS IID,
              i.Name AS ItemName,
              i.ParentItemID,
              i.Price AS ItemPrice,
              i.IsCheckedByDefault
            FROM OrderLineItems oli
            INNER JOIN Items i ON i.ID = oli.ItemID
            WHERE oli.OrderID = ? AND oli.IsDeleted = 0
            ORDER BY oli.ID
        ", [$qTask['OrderID']]);

        $subtotal = 0;
        foreach ($qLineItems as $li) {
            $subtotal += (float) $li['LineItemPrice'] * (int) $li['Quantity'];
            $result['LineItems'][] = [
                'LineItemID' => (int) $li['OrderLineItemID'],
                'ParentLineItemID' => (int) $li['ParentOrderLineItemID'],
                'ItemID' => (int) $li['ItemID'],
                'ItemName' => $li['ItemName'],
                'ItemPrice' => (float) $li['LineItemPrice'],
                'Quantity' => (int) $li['Quantity'],
                'Remark' => $li['Remark'] ?? '',
                'IsModifier' => (int) $li['ParentOrderLineItemID'] > 0,
            ];
        }

        // Calculate order total
        $taxAmount = $subtotal * (float) ($qTask['TaxRate'] ?? 0);
        $tipAmount = (float) ($qTask['TipAmount'] ?? 0);
        $deliveryFee = ((int) ($qTask['OrderTypeID'] ?? 0) === 3) ? (float) ($qTask['DeliveryFee'] ?? 0) : 0;
        $feeRate = (is_numeric($qTask['PayfritFee'] ?? null) && (float) $qTask['PayfritFee'] > 0)
            ? (float) $qTask['PayfritFee'] : 0.05;
        $platformFee = $subtotal * $feeRate;
        $totalAmount = $subtotal + $taxAmount + $tipAmount + $deliveryFee + $platformFee;
        $result['OrderTotal'] = number_format($totalAmount, 2, '.', '');
        $result['OrderTotalCents'] = (int) round($totalAmount * 100);
    }

    jsonResponse(['OK' => true, 'ERROR' => '', 'TASK' => $result]);

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