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

/**
 * Mark Station Done
 * POST: { OrderID: int, StationID: int }
 * Marks all root line items for a station as done, auto-promotes order status.
 */

$data = readJsonBody();
$OrderID = (int) ($data['OrderID'] ?? 0);
$StationID = (int) ($data['StationID'] ?? 0);

if ($OrderID <= 0 || $StationID <= 0) {
    apiAbort(['OK' => false, 'ERROR' => 'missing_params', 'MESSAGE' => 'OrderID and StationID are required.']);
}

try {
    $qOrder = queryOne("
        SELECT o.ID, o.StatusID, o.BusinessID, o.ServicePointID, sp.Name
        FROM Orders o
        LEFT JOIN ServicePoints sp ON sp.ID = o.ServicePointID
        WHERE o.ID = ? LIMIT 1
    ", [$OrderID]);

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

    $oldStatusID = (int) $qOrder['StatusID'];

    // Mark root line items for this station as done (StatusID = 1)
    queryTimed("
        UPDATE OrderLineItems oli
        INNER JOIN Items i ON i.ID = oli.ItemID
        SET oli.StatusID = 1
        WHERE oli.OrderID = ? AND i.StationID = ? AND oli.ParentOrderLineItemID = 0 AND oli.IsDeleted = 0
    ", [$OrderID, $StationID]);

    // Also mark children (modifiers) of those root items as done
    queryTimed("
        UPDATE OrderLineItems oli
        SET oli.StatusID = 1
        WHERE oli.OrderID = ? AND oli.IsDeleted = 0
          AND oli.ParentOrderLineItemID IN (
            SELECT sub.ID FROM (
              SELECT oli2.ID
              FROM OrderLineItems oli2
              INNER JOIN Items i2 ON i2.ID = oli2.ItemID
              WHERE oli2.OrderID = ? AND i2.StationID = ?
                AND oli2.ParentOrderLineItemID = 0 AND oli2.IsDeleted = 0
            ) sub
          )
    ", [$OrderID, $OrderID, $StationID]);

    // Auto-promote to status 2 if was at status 1
    if ($oldStatusID === 1) {
        queryTimed("UPDATE Orders SET StatusID = 2, LastEditedOn = NOW() WHERE ID = ?", [$OrderID]);
        $oldStatusID = 2;
    }

    // Check if ALL station-assigned root items are now done
    $qRemaining = queryOne("
        SELECT COUNT(*) AS RemainingCount
        FROM OrderLineItems oli
        INNER JOIN Items i ON i.ID = oli.ItemID
        WHERE oli.OrderID = ? AND oli.ParentOrderLineItemID = 0 AND oli.IsDeleted = 0
          AND i.StationID > 0 AND oli.StatusID = 0
    ", [$OrderID]);

    $allStationsDone = ((int) ($qRemaining['RemainingCount'] ?? 0) === 0);
    $NewStatusID = $oldStatusID;
    $taskCreated = false;

    // Auto-promote to status 3 and create tasks
    if ($allStationsDone && $oldStatusID < 3) {
        $NewStatusID = 3;
        queryTimed("UPDATE Orders SET StatusID = 3, LastEditedOn = NOW() WHERE ID = ?", [$OrderID]);

        require __DIR__ . '/_createOrderTasks.php';
    }

    jsonResponse([
        'OK'               => true,
        'ERROR'            => '',
        'MESSAGE'          => 'Station items marked as done.',
        'OrderID'          => $OrderID,
        'StationID'        => $StationID,
        'StationDone'      => true,
        'AllStationsDone'  => $allStationsDone,
        'NewOrderStatusID' => $NewStatusID,
        'TaskCreated'      => $allStationsDone && $taskCreated,
    ]);

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