import { verifyCompatibilityTuple } from "../application/policies/compatibility.ts";

export const RELEASE_TOKEN_REGISTRY = Object.freeze({
  appVersion: token("appVersion", "manifest", "human release label"),
  buildId: token("buildId", "CI build", "asset and HTML coherence"),
  commitSha: token("commitSha", "VCS", "source traceability"),
  configSchemaVersion: token(
    "configSchemaVersion",
    "runtime config schema",
    "boot compatibility",
  ),
  apiContractVersion: token(
    "apiContractVersion",
    "frontend/backend agreement",
    "legacy V1 scalar; superseded by contractSetDigest",
  ),
  contractSetDigest: token(
    "contractSetDigest",
    "compiled external contract package set",
    "release coherence for multi-package contracts",
  ),
  assetManifestHash: token(
    "assetManifestHash",
    "build output",
    "chunk integrity and mismatch detection",
  ),
  releaseId: token("releaseId", "deploy system", "rollback target"),
  builtAt: token("builtAt", "CI", "diagnostics only; never cache identity"),
});

function token(name: string, source: string, compatibilityRole: string) {
  return Object.freeze({ token: name, source, compatibilityRole });
}

/**
 * Compare a release manifest and runtime configuration structurally. Version
 * fields are delegated to the numeric compatibility policy, never compared
 * lexically.
 *
 */
export function compareReleaseToRuntime(
  release: Readonly<{
    buildId: string;
    configSchemaVersion: string;
    apiContractVersion: string;
    assetManifestHash: string;
    releaseId: string;
  }>,
  runtimeConfig: Readonly<{
    BUILD_ID: string;
    CONFIG_SCHEMA_VERSION: string;
    API_CONTRACT_VERSION: string;
    RELEASE_ID: string;
  }>,
) {
  return verifyCompatibilityTuple({
    frontend: release,
    runtime: {
      buildId: runtimeConfig.BUILD_ID,
      configSchemaVersion: runtimeConfig.CONFIG_SCHEMA_VERSION,
      apiContractVersion: runtimeConfig.API_CONTRACT_VERSION,
      assetManifestHash: release.assetManifestHash,
      releaseId: runtimeConfig.RELEASE_ID,
    },
  });
}