export type ExtendProviderCredential = {
  apiKey?: string | null;
  updatedAt?: Date | string | null;
};

export type ExtendProvider = "vip98k" | "dashscope" | "fal";

export function resolveFalExtendApiKey(providers: Array<ExtendProviderCredential & { baseUrl?: string | null }>) {
  for (const { apiKey, baseUrl } of providers) {
    if (!apiKey || !baseUrl) continue;
    const url = URL.canParse(baseUrl) ? new URL(baseUrl) : null;
    if (url?.protocol === "https:" && ["queue.fal.run", "fal.run", "fal.ai", "api.fal.ai"].includes(url.hostname)) {
      return apiKey.trim().replace(/^(?:Bearer|Key)\s+/i, "");
    }
  }
  return null;
}

function getUpdatedAtTimestamp(value: Date | string | null | undefined): number {
  if (!value) return 0;
  const timestamp = value instanceof Date ? value.getTime() : Date.parse(value);
  return Number.isFinite(timestamp) ? timestamp : 0;
}

export function resolveAlibabaExtendApiKey(
  providers: ExtendProviderCredential[],
  legacyApiKey?: string | null,
): string | null {
  const currentProvider = providers
    .filter((provider) => Boolean(provider.apiKey?.trim()))
    .sort(
      (left, right) =>
        getUpdatedAtTimestamp(right.updatedAt) -
        getUpdatedAtTimestamp(left.updatedAt),
    )[0];

  return currentProvider?.apiKey?.trim() || legacyApiKey?.trim() || null;
}