<?php
error_reporting(E_ALL ^ E_NOTICE);
header("Access-Control-Allow-Methods: GET, POST, PUT, DELETE");
header("Content-Type: application/json; charset=utf-8");

include_once '../conexion.php';
include_once '../clases/TokenValidator.php';

// Llama la validación antes de cualquier consulta
$usuarioId = TokenValidator::validar($conn);

try {
    $bodyRequest = file_get_contents("php://input");
    $datos = json_decode($bodyRequest, true);

    if (!isset($datos[0], $datos[1])) {
        throw new Exception("Parámetros incompletos.");
    }

    $sql = "SELECT nombre FROM transportista 
            WHERE empresa_id = :empresa_id 
              AND nombre = :nombre 
            LIMIT 1";

    $stmt = $conn->prepare($sql);
    $stmt->execute([
        ':empresa_id' => (int)$datos[0],
        ':nombre'     => $datos[1]
    ]);

    $rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
    print_json($rows);

} catch (Exception $e) {
    http_response_code(500);
    echo json_encode(['error' => $e->getMessage()], JSON_UNESCAPED_UNICODE);
    exit();
}

function print_json($data) {
    echo json_encode($data, JSON_UNESCAPED_UNICODE);

    switch (json_last_error()) {
        case JSON_ERROR_NONE: break;
        case JSON_ERROR_DEPTH: error_response('Maximum stack depth exceeded'); break;
        case JSON_ERROR_STATE_MISMATCH: error_response('Underflow or the modes mismatch'); break;
        case JSON_ERROR_CTRL_CHAR: error_response('Unexpected control character found'); break;
        case JSON_ERROR_SYNTAX: error_response('Syntax error, malformed JSON'); break;
        case JSON_ERROR_UTF8: error_response('Malformed UTF-8 characters, possibly incorrectly encoded'); break;
        default: error_response('Unknown error'); break;
    }
}

function error_response($message) {
    http_response_code(500);
    echo json_encode(['error' => $message], JSON_UNESCAPED_UNICODE);
    exit();
}
?>
