import type { FailureKind, JsonRecord } from "./types.js";

export class AgentRunError extends Error {
  readonly failureKind: FailureKind;
  readonly details: JsonRecord | null;
  readonly httpStatus: number;

  constructor(failureKind: FailureKind, message: string, options: { httpStatus?: number; details?: JsonRecord } = {}) {
    super(message);
    this.name = "AgentRunError";
    this.failureKind = failureKind;
    this.httpStatus = options.httpStatus ?? 400;
    this.details = options.details ?? null;
  }
}

export function errorToJson(error: unknown): JsonRecord {
  if (error instanceof AgentRunError) {
    return {
      name: error.name,
      failureKind: error.failureKind,
      message: error.message,
      details: error.details,
    };
  }
  if (error instanceof Error) return { name: error.name, message: error.message, stack: error.stack ?? null };
  return { name: "UnknownError", message: String(error) };
}