import { describe, expect, it } from "vitest";

import {
  compareReleaseToRuntime,
  RELEASE_TOKEN_REGISTRY,
} from "../../src/contracts/release-tokens.js";

describe("release coherence", () => {
  it("owns all eight release tokens and keeps builtAt diagnostic-only", () => {
    expect(Object.keys(RELEASE_TOKEN_REGISTRY)).toHaveLength(8);
    expect(RELEASE_TOKEN_REGISTRY.builtAt.compatibilityRole).toContain(
      "never cache identity",
    );
  });

  it("compares the runtime config to the release structurally", () => {
    const release = {
      buildId: "build-a",
      configSchemaVersion: "1.0",
      apiContractVersion: "1.0",
      assetManifestHash: "assets-a",
      releaseId: "release-a",
    };
    expect(
      compareReleaseToRuntime(release, {
        BUILD_ID: "build-a",
        CONFIG_SCHEMA_VERSION: "1.2",
        API_CONTRACT_VERSION: "1.1",
        RELEASE_ID: "release-a",
      }),
    ).toMatchObject({ compatible: true, mismatches: [] });
  });

  it("rejects HTML-only rollback against a newer runtime config", () => {
    const oldRelease = {
      buildId: "build-old",
      configSchemaVersion: "1.0",
      apiContractVersion: "1.0",
      assetManifestHash: "assets-old",
      releaseId: "release-old",
    };
    expect(
      compareReleaseToRuntime(oldRelease, {
        BUILD_ID: "build-new",
        CONFIG_SCHEMA_VERSION: "2.0",
        API_CONTRACT_VERSION: "2.0",
        RELEASE_ID: "release-new",
      }),
    ).toMatchObject({
      compatible: false,
      mismatches: ["buildId", "configSchemaVersion", "apiContractVersion"],
    });
  });
});