export const DULUPAY_CONFIG_KEY = "payment_dulupay_config";

export type DulupayConfig = {
  enabled: boolean;
  version: "v1" | "v2";
  baseUrl: string;
  notifyUrl: string;
  returnUrl: string;
  // V1
  pid: string;
  key: string;
  defaultType: string;
  // V2
  mchId: string;
  appId: string;
  merchantPrivateKey: string;
  platformPublicKey: string;
};

export const defaultDulupayConfig: DulupayConfig = {
  enabled: false,
  version: "v1",
  baseUrl: "https://www.dulupay.com",
  notifyUrl: "",
  returnUrl: "",
  pid: "",
  key: "",
  defaultType: "alipay",
  mchId: "",
  appId: "",
  merchantPrivateKey: "",
  platformPublicKey: "",
};

function sanitizeText(value: unknown, maxLength: number) {
  return String(value || "").trim().slice(0, maxLength);
}

export function normalizeDulupayConfig(value: unknown): DulupayConfig {
  if (!value || typeof value !== "object") {
    return defaultDulupayConfig;
  }

  const raw = value as Partial<DulupayConfig>;
  const version = raw.version === "v2" ? "v2" : "v1";

  return {
    enabled: raw.enabled === true,
    version,
    baseUrl:
      sanitizeText(raw.baseUrl, 255) || defaultDulupayConfig.baseUrl,
    notifyUrl: sanitizeText(raw.notifyUrl, 500),
    returnUrl: sanitizeText(raw.returnUrl, 500),
    pid: sanitizeText(raw.pid, 128),
    key: sanitizeText(raw.key, 500),
    defaultType: sanitizeText(raw.defaultType, 64) || "alipay",
    mchId: sanitizeText(raw.mchId, 128),
    appId: sanitizeText(raw.appId, 128),
    merchantPrivateKey: sanitizeText(raw.merchantPrivateKey, 6000),
    platformPublicKey: sanitizeText(raw.platformPublicKey, 6000),
  };
}

export function normalizeDulupayForPublic(value: unknown): DulupayConfig {
  const config = normalizeDulupayConfig(value);
  return {
    ...config,
    pid: "",
    key: "",
    mchId: "",
    appId: "",
    merchantPrivateKey: "",
    platformPublicKey: "",
  };
}