import {
  BadRequestException,
  UnauthorizedException,
} from "@nestjs/common";

export enum CaptchaAuthErrorCode {
  CAPTCHA_REQUIRED = "CAPTCHA_REQUIRED",
  CAPTCHA_NOT_FOUND = "CAPTCHA_NOT_FOUND",
  CAPTCHA_EXPIRED = "CAPTCHA_EXPIRED",
  CAPTCHA_INVALID = "CAPTCHA_INVALID",
}

const messages: Record<CaptchaAuthErrorCode, string> = {
  [CaptchaAuthErrorCode.CAPTCHA_REQUIRED]:
    "Captcha is required. Request a new captcha image first.",
  [CaptchaAuthErrorCode.CAPTCHA_NOT_FOUND]:
    "Captcha id was not found. Request a new captcha image.",
  [CaptchaAuthErrorCode.CAPTCHA_EXPIRED]:
    "Captcha has expired. Request a new captcha image.",
  [CaptchaAuthErrorCode.CAPTCHA_INVALID]: "Captcha is invalid.",
};

export function captchaAuthErrorBody(code: CaptchaAuthErrorCode) {
  return {
    code,
    message: messages[code],
  };
}

export function throwCaptchaAuthError(code: CaptchaAuthErrorCode): never {
  if (
    code === CaptchaAuthErrorCode.CAPTCHA_REQUIRED ||
    code === CaptchaAuthErrorCode.CAPTCHA_NOT_FOUND
  ) {
    throw new BadRequestException(captchaAuthErrorBody(code));
  }
  throw new UnauthorizedException(captchaAuthErrorBody(code));
}