import { describe, expect, it } from "vitest";
import { validateDnsRecord, ValidationError } from "../src/validators.js";

function assertValidName(name: string): void {
  expect(() =>
    validateDnsRecord("A", name, "1.2.3.4", 1, false),
  ).not.toThrow();
}

function assertInvalidName(name: string): void {
  expect(() => validateDnsRecord("A", name, "1.2.3.4", 1, false)).toThrow(
    ValidationError,
  );
  expect(() => validateDnsRecord("A", name, "1.2.3.4", 1, false)).toThrow(
    `invalid record name: ${name}`,
  );
}

describe("validateDnsRecord name", () => {
  it("accepts apex and zone wildcard", () => {
    assertValidName("@");
    assertValidName("*");
  });

  it("accepts regular labels and FQDN", () => {
    assertValidName("ndns");
    assertValidName("ndns.shnt.top");
  });

  it("accepts nested wildcard relative name and FQDN", () => {
    assertValidName("*.ndns");
    assertValidName("*.ndns.shnt.top");
    assertValidName("*.mdns");
    assertValidName("*.mdns.rkns.top");
  });

  it("rejects wildcard not as leftmost label", () => {
    assertInvalidName("foo.*.bar");
    assertInvalidName("ndns.*");
  });
});