export { validateYonexusClientConfig, YonexusClientConfigError } from "./core/config.js";
export type { YonexusClientConfig } from "./core/config.js";
export {
  CLIENT_STATE_VERSION,
  YonexusClientStateError,
  YonexusClientStateCorruptionError,
  createYonexusClientStateStore,
  loadYonexusClientState,
  saveYonexusClientState,
  createInitialClientState,
  hasClientSecret,
  hasClientKeyPair,
  type YonexusClientState,
  type YonexusClientStateFile,
  type YonexusClientStateStore
} from "./core/state.js";
export {
  createClientTransport,
  YonexusClientTransport,
  type ClientTransport,
  type ClientTransportOptions,
  type ClientConnectionState,
  type ClientMessageHandler,
  type ClientStateChangeHandler,
  type ClientErrorHandler
} from "./core/transport.js";
export {
  createYonexusClientRuntime,
  YonexusClientRuntime,
  type YonexusClientRuntimeOptions,
  type YonexusClientRuntimeState,
  type YonexusClientPhase
} from "./core/runtime.js";
export {
  createClientRuleRegistry,
  YonexusClientRuleRegistry,
  ClientRuleRegistryError,
  type ClientRuleRegistry,
  type ClientRuleProcessor
} from "./core/rules.js";

import path from "node:path";
import { validateYonexusClientConfig } from "./core/config.js";
import { createYonexusClientStateStore } from "./core/state.js";
import { createClientTransport } from "./core/transport.js";
import { createYonexusClientRuntime, type YonexusClientRuntime } from "./core/runtime.js";
import { createClientRuleRegistry, YonexusClientRuleRegistry } from "./core/rules.js";

const _G = globalThis as Record<string, unknown>;
const _STARTED_KEY   = "_yonexusClientStarted";
const _RUNTIME_KEY   = "_yonexusClientRuntime";
const _REGISTRY_KEY  = "_yonexusClientRegistry";
const _CALLBACKS_KEY = "_yonexusClientOnAuthCallbacks";

export interface YonexusClientPluginManifest {
  readonly name: "Yonexus.Client";
  readonly version: string;
  readonly description: string;
}

const manifest: YonexusClientPluginManifest = {
  name: "Yonexus.Client",
  version: "0.1.0",
  description: "Yonexus client plugin for cross-instance OpenClaw communication"
};

export function createYonexusClientPlugin(api: { rootDir: string; pluginConfig: unknown }): void {
  // 1. Ensure shared state survives hot-reload — only initialise when absent
  if (!(_G[_REGISTRY_KEY] instanceof YonexusClientRuleRegistry)) {
    _G[_REGISTRY_KEY] = createClientRuleRegistry();
  }
  if (!Array.isArray(_G[_CALLBACKS_KEY])) {
    _G[_CALLBACKS_KEY] = [];
  }

  const ruleRegistry         = _G[_REGISTRY_KEY] as YonexusClientRuleRegistry;
  const onAuthenticatedCallbacks = _G[_CALLBACKS_KEY] as Array<() => void>;

  // 2. Refresh the cross-plugin API object every call so that sendRule / submitPairingCode
  //    closures always read the live runtime from globalThis.
  _G["__yonexusClient"] = {
    ruleRegistry,
    sendRule: (ruleId: string, content: string): boolean =>
      (_G[_RUNTIME_KEY] as YonexusClientRuntime | undefined)?.sendRuleMessage(ruleId, content) ?? false,
    submitPairingCode: (code: string): boolean =>
      (_G[_RUNTIME_KEY] as YonexusClientRuntime | undefined)?.submitPairingCode(code) ?? false,
    onAuthenticated: onAuthenticatedCallbacks
  };

  // 3. Start the runtime only once — the globalThis flag survives hot-reload
  if (_G[_STARTED_KEY]) return;
  _G[_STARTED_KEY] = true;

  const config = validateYonexusClientConfig(api.pluginConfig);
  const stateStore = createYonexusClientStateStore(path.join(api.rootDir, "state.json"));

  const transport = createClientTransport({
    config,
    onMessage: (msg) => {
      (_G[_RUNTIME_KEY] as YonexusClientRuntime | undefined)?.handleMessage(msg).catch((err: unknown) => {
        console.error("[yonexus-client] message handler error:", err);
      });
    },
    onStateChange: (state) => {
      (_G[_RUNTIME_KEY] as YonexusClientRuntime | undefined)?.handleTransportStateChange(state);
    }
  });

  const runtime = createYonexusClientRuntime({
    config,
    transport,
    stateStore,
    ruleRegistry,
    onAuthenticated: () => {
      for (const cb of onAuthenticatedCallbacks) cb();
    }
  });
  _G[_RUNTIME_KEY] = runtime;

  const shutdown = (): void => {
    runtime.stop().catch((err: unknown) => {
      console.error("[yonexus-client] shutdown error:", err);
    });
  };
  process.once("SIGTERM", shutdown);
  process.once("SIGINT", shutdown);

  runtime.start().catch((err: unknown) => {
    console.error("[yonexus-client] failed to start:", err);
  });
}

export default createYonexusClientPlugin;
export { manifest };