import assert from "node:assert/strict";
import { mkdtemp, rm } from "node:fs/promises";
import os from "node:os";
import path from "node:path";
import test from "node:test";
import { writeNativeWaterAuditCacheAliases } from "./native-water-audit-cache.mjs";

test("water audit-cache aliases preserve exact DDS/PNG bytes under a unique texture basename", async () => {
  const projectRoot = await mkdtemp(path.join(os.tmpdir(), "native-water-audit-cache-"));
  const auditCacheRoot = path.join(projectRoot, "water-audit-cache");
  const ddsBytes = Buffer.from("source-dds-frame");
  const pngBytes = Buffer.from("prepared-lossless-png-frame");
  const options = { projectRoot, auditCacheRoot, variantName: "rom-water-normal-1234-00", ddsBytes, pngBytes };
  try {
    const first = await writeNativeWaterAuditCacheAliases(options);
    const second = await writeNativeWaterAuditCacheAliases(options);
    assert.deepEqual(second, first, "existing exact aliases are safe to reuse");
    assert.match(first.rawDds.path, /raw\/textures\/rom-water-normal-1234-00\.dds$/);
    assert.match(first.preparedPng.path, /prepared\/textures\/rom-water-normal-1234-00\.png$/);
    assert.equal(first.rawDds.bytes, ddsBytes.length);
    assert.equal(first.preparedPng.bytes, pngBytes.length);
    await assert.rejects(writeNativeWaterAuditCacheAliases({
      ...options,
      ddsBytes: Buffer.from("different source frame"),
    }), /non-identical/);
    await assert.rejects(writeNativeWaterAuditCacheAliases({
      ...options,
      variantName: "../escape",
    }), /safe texture basename/);
  } finally {
    await rm(projectRoot, { recursive: true, force: true });
  }
});