import test from "node:test";
import assert from "node:assert/strict";
import { loadModule } from "./test-helpers.mjs";

const contract = await loadModule("shared/utils/drop-contract.ts");
const types = await loadModule("shared/types/drop.ts");
const valid = {
  version: 2,
  chunkSize: types.CHUNK_SIZE,
  chunkCount: 1,
  noncePrefix: "AQIDBAUGBwg",
  expiresIn: "24h",
  maxReads: 1,
};

test("reservation validation accepts protocol geometry and rejects unsafe policies", () => {
  assert.deepEqual(contract.validateReservation(valid), valid);
  for (const bad of [
    { ...valid, chunkSize: 1 },
    { ...valid, chunkCount: 0 },
    { ...valid, chunkCount: 1.5 },
    { ...valid, expiresIn: "forever" },
    { ...valid, maxReads: 2 },
    { ...valid, unknown: true },
    { ...valid, noncePrefix: "AA" },
  ])
    assert.throws(() => contract.validateReservation(bad));
});

test("manifest body must contain plaintext as well as the GCM tag", () => {
  assert.throws(() => contract.validateManifestBodyLength(types.GCM_TAG_BYTES));
  assert.doesNotThrow(() =>
    contract.validateManifestBodyLength(types.GCM_TAG_BYTES + 1),
  );
});