import { env } from "../env.js";

const CF_API = "https://api.cloudflare.com/client/v4";

export interface CloudflareCustomHostname {
  id: string;
  hostname: string;
  status: string;
  ownership_verification?: { type: string; name: string; value: string };
  ssl: {
    status: string;
    method: string;
    type: string;
    validation_records?: { txt_name: string; txt_value: string }[];
  };
}

async function cfFetch<T>(path: string, options: RequestInit = {}): Promise<T> {
  if (!env.CLOUDFLARE_API_TOKEN || !env.CLOUDFLARE_ZONE_ID) {
    throw new Error("Cloudflare not configured (CLOUDFLARE_API_TOKEN / CLOUDFLARE_ZONE_ID missing)");
  }

  const res = await fetch(`${CF_API}${path}`, {
    ...options,
    headers: {
      Authorization: `Bearer ${env.CLOUDFLARE_API_TOKEN}`,
      "Content-Type": "application/json",
      ...(options.headers ?? {}),
    },
  });

  const json = (await res.json()) as { success: boolean; result: T; errors: { message: string }[] };
  if (!json.success) {
    throw new Error(json.errors?.[0]?.message ?? "Cloudflare API error");
  }
  return json.result;
}

// One-time DCV (domain ownership) TXT + a per-hostname SSL cert via
// Cloudflare for SaaS. The hostname's own CNAME (routing) is set by the
// customer independently — see domains.ts's cnameTarget instruction.
export async function createCustomHostname(hostname: string): Promise<CloudflareCustomHostname> {
  return cfFetch<CloudflareCustomHostname>(`/zones/${env.CLOUDFLARE_ZONE_ID}/custom_hostnames`, {
    method: "POST",
    body: JSON.stringify({ hostname, ssl: { method: "txt", type: "dv" } }),
  });
}

export async function getCustomHostnameByHostname(
  hostname: string,
): Promise<CloudflareCustomHostname | null> {
  const results = await cfFetch<CloudflareCustomHostname[]>(
    `/zones/${env.CLOUDFLARE_ZONE_ID}/custom_hostnames?hostname=${encodeURIComponent(hostname)}`,
  );
  return results?.[0] ?? null;
}

export async function deleteCustomHostname(id: string): Promise<void> {
  await cfFetch(`/zones/${env.CLOUDFLARE_ZONE_ID}/custom_hostnames/${id}`, { method: "DELETE" });
}