import type { Response } from 'express';

interface SuccessBody<T> {
  success: true;
  data: T;
  error: null;
}

interface ErrorBody {
  success: false;
  data: null;
  error: {
    message: string;
    code: string;
    details?: unknown;
  };
}

export function sendSuccess<T>(res: Response, data: T, statusCode = 200): void {
  const body: SuccessBody<T> = { success: true, data, error: null };
  res.status(statusCode).json(body);
}

export function sendError(
  res: Response,
  statusCode: number,
  code: string,
  message: string,
  details?: unknown,
): void {
  const body: ErrorBody = {
    success: false,
    data: null,
    error: { message, code, ...(details !== undefined ? { details } : {}) },
  };
  res.status(statusCode).json(body);
}