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

/**
 * Get Child Businesses (food court children)
 * POST or GET: { BusinessID: int }
 */

$parentBusinessId = 0;

// Support GET param or POST body
if (!empty($_GET['BusinessID']) && is_numeric($_GET['BusinessID'])) {
    $parentBusinessId = (int) $_GET['BusinessID'];
} else {
    $data = readJsonBody();
    $parentBusinessId = (int) ($data['BusinessID'] ?? 0);
}

if ($parentBusinessId <= 0) {
    apiAbort(['OK' => false, 'ERROR' => 'missing_business_id', 'MESSAGE' => 'BusinessID is required']);
}

try {
    $rows = queryTimed("
        SELECT ID, Name
        FROM Businesses
        WHERE ParentBusinessID = ?
        ORDER BY Name
    ", [$parentBusinessId]);

    $businesses = [];
    foreach ($rows as $r) {
        $businesses[] = [
            'BusinessID' => (int) $r['ID'],
            'Name' => $r['Name'],
        ];
    }

    jsonResponse(['OK' => true, 'ERROR' => '', 'BUSINESSES' => $businesses]);

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