import { isApiError } from "../api/types";
import { mapApiErrorMessage } from "../api/errorMessages";

function toUserSafeMessage(message: string | undefined, fallback: string) {
  const normalized = (message ?? "")
    .trim()
    .replace(/^(?:[A-Z][A-Z0-9_]{2,}|\d{3})[:：]\s*/, "");
  if (!normalized) {
    return fallback;
  }

  const exposesTechnicalDetail =
    !/[\u3400-\u9fff]/.test(normalized) ||
    /https?:\/\/|\/api\/|(?:^|\s)\/[A-Za-z0-9._-]+(?:\/[^\s]*)?|[A-Za-z]:\\|(?:^|\n)\s*at\s|\b(?:GET|POST|PUT|PATCH|DELETE)\s+\/|^(?:\{|\[)/.test(normalized);

  return exposesTechnicalDetail ? fallback : normalized;
}

export function resolveErrorMessage(
  error: unknown,
  fallback = "操作失败，请稍后重试",
): string {
  if (isApiError(error)) {
    return toUserSafeMessage(
      mapApiErrorMessage(error.code, error.details, error.message),
      fallback,
    );
  }

  if (error instanceof Error) {
    return toUserSafeMessage(error.message, fallback);
  }

  return fallback;
}