import { test } from "node:test";
import assert from "node:assert/strict";
import { machineName, machinePrefix, networkName, newInstanceId, instanceIdOf } from "../src/lifecycle/names.ts";

test("network names fit incus's 15-character limit", () => {
  const id = newInstanceId("the-ordinary-shape", new Date("2026-08-24T22:15:00Z"));
  for (const segment of ["hosting", "isp-home", "isp-mobile", "home", "devices", "cafe"]) {
    const name = networkName(id, segment);
    assert.ok(name.length <= 15, `${name} is ${name.length} chars`);
  }
});

test("network names are unique per (instance, segment)", () => {
  const a = newInstanceId("x", new Date("2026-08-24T22:15:00Z"));
  const b = newInstanceId("x", new Date("2026-08-24T23:15:00Z"));
  const names = new Set([
    networkName(a, "home"), networkName(a, "cafe"),
    networkName(b, "home"), networkName(b, "cafe"),
  ]);
  assert.equal(names.size, 4, "two instances of one declaration must not share a network");
});

test("machine names round-trip to their instance id", () => {
  const id = newInstanceId("bootstrap-single", new Date("2026-08-24T22:15:00Z"));
  const name = machineName(id, "anchor");
  assert.equal(instanceIdOf(name, "anchor"), id);
  assert.ok(name.startsWith(machinePrefix(id)));
});

test("instance ids are sortable by time", () => {
  const early = newInstanceId("x", new Date("2026-08-24T09:00:00Z"));
  const late = newInstanceId("x", new Date("2026-08-24T21:00:00Z"));
  assert.ok(early < late, `${early} should sort before ${late}`);
});