export type ClineErrorType =
  | "not_subscribed"
  | "auth_expired"
  | "rate_limited"
  | "unknown";

function matchesAny(text: string, patterns: string[]): boolean {
  return patterns.some((p) => text.includes(p));
}

export const CLINE_ERROR_MESSAGES: Record<ClineErrorType, string> = {
  not_subscribed:
    "This model requires a ClinePass subscription — visit app.cline.bot to subscribe. " +
    "Free-tier models (z-ai/*) work without one.",
  auth_expired:
    "Cline authentication expired. Run `pi /login` and select Cline, or run `cline auth` first.",
  rate_limited:
    "Cline rate limit reached. Wait a moment and try again.",
  unknown:
    "Cline request failed. Run `cline auth` or `pi /login` to refresh credentials.",
};

export function classifyClineError(errorMessage: string): {
  type: ClineErrorType;
  message: string;
} {
  const lower = errorMessage.toLowerCase();

  if (
    matchesAny(lower, [
      "entitlement",
      "not subscribed",
      "required model plan",
    ])
  ) {
    return { type: "not_subscribed", message: CLINE_ERROR_MESSAGES.not_subscribed };
  }

  if (matchesAny(lower, ["401", "unauthorized", "invalid api key", "invalid_api_key"])) {
    return { type: "auth_expired", message: CLINE_ERROR_MESSAGES.auth_expired };
  }

  if (matchesAny(lower, ["429", "rate limit", "too many requests", "rate_limit"])) {
    return { type: "rate_limited", message: CLINE_ERROR_MESSAGES.rate_limited };
  }

  return { type: "unknown", message: CLINE_ERROR_MESSAGES.unknown };
}