import { readFileSync } from "node:fs";
import { dirname, join } from "node:path";
import { fileURLToPath } from "node:url";
import { CONTRACT_VERSIONS } from "agent-relay-sdk";
import { gitShaFromEnv } from "./config";

const __dirname = dirname(fileURLToPath(import.meta.url));
const pkg = JSON.parse(readFileSync(join(__dirname, "../package.json"), "utf8")) as { name?: string; version?: string };

export const PACKAGE_NAME = pkg.name || "agent-relay-orchestrator";
export const VERSION = pkg.version || "0.0.0";
// Protocol versions are owned by the SDK (CONTRACT_VERSIONS) — derive, never redeclare.
export const ORCHESTRATOR_PROTOCOL_VERSION = CONTRACT_VERSIONS.orchestratorProtocol;
export const RUNNER_PROTOCOL_VERSION = CONTRACT_VERSIONS.runnerProtocol;
export const PROVIDER_PLUGIN_PROTOCOL_VERSION = CONTRACT_VERSIONS.providerPluginProtocol;
export const GIT_SHA = gitShaFromEnv();

export const CONTRACTS = {
  orchestratorProtocol: ORCHESTRATOR_PROTOCOL_VERSION,
  runnerProtocol: RUNNER_PROTOCOL_VERSION,
  providerPluginProtocol: PROVIDER_PLUGIN_PROTOCOL_VERSION,
} as const;

export const RUNTIME_CAPABILITIES = {
  directoryBrowse: true,
  relayCommandBus: true,
  selfUpgrade: true,
  authenticatedLogProxy: true,
  artifactProxy: true,
  managedAgentReports: true,
  durableRunnerSupervisor: true,
  migrateProviderConfig: true,
} as const;

export function runtimeMetadata() {
  return {
    package: {
      name: PACKAGE_NAME,
      version: VERSION,
    },
    contracts: CONTRACTS,
    capabilities: RUNTIME_CAPABILITIES,
  };
}