import {  type GitActionProgressEvent,  ORCHESTRATION_WS_CHANNELS,  ORCHESTRATION_WS_METHODS,  type ContextMenuItem,  type NativeApi,  ServerConfigUpdatedPayload,  WS_CHANNELS,  WS_METHODS,  type WsWelcomePayload,} from "@t3tools/contracts"; import { showContextMenuFallback } from "./contextMenuFallback";import { WsTransport } from "./wsTransport"; let instance: { api: NativeApi; transport: WsTransport } | null = null;const welcomeListeners = new Set<(payload: WsWelcomePayload) => void>();const serverConfigUpdatedListeners = new Set<(payload: ServerConfigUpdatedPayload) => void>();const gitActionProgressListeners = new Set<(payload: GitActionProgressEvent) => void>(); /** * Subscribe to the server welcome message. If a welcome was already received * before this call, the listener fires synchronously with the cached payload. * This avoids the race between WebSocket connect and React effect registration. */export function onServerWelcome(listener: (payload: WsWelcomePayload) => void): () => void {  welcomeListeners.add(listener);   const latestWelcome = instance?.transport.getLatestPush(WS_CHANNELS.serverWelcome)?.data ?? null;  if (latestWelcome) {    try {      listener(latestWelcome);    } catch {      // Swallow listener errors    }  }   return () => {    welcomeListeners.delete(listener);  };} /** * Subscribe to server config update events. Replays the latest update for * late subscribers to avoid missing config validation feedback. */export function onServerConfigUpdated(  listener: (payload: ServerConfigUpdatedPayload) => void,): () => void {  serverConfigUpdatedListeners.add(listener);   const latestConfig =    instance?.transport.getLatestPush(WS_CHANNELS.serverConfigUpdated)?.data ?? null;  if (latestConfig) {    try {      listener(latestConfig);    } catch {      // Swallow listener errors    }  }   return () => {    serverConfigUpdatedListeners.delete(listener);  };} export function createWsNativeApi(): NativeApi {  if (instance) return instance.api;   const transport = new WsTransport();   transport.subscribe(WS_CHANNELS.serverWelcome, (message) => {    const payload = message.data;    for (const listener of welcomeListeners) {      try {        listener(payload);      } catch {        // Swallow listener errors      }    }  });  transport.subscribe(WS_CHANNELS.serverConfigUpdated, (message) => {    const payload = message.data;    for (const listener of serverConfigUpdatedListeners) {      try {        listener(payload);      } catch {        // Swallow listener errors      }    }  });  transport.subscribe(WS_CHANNELS.gitActionProgress, (message) => {    const payload = message.data;    for (const listener of gitActionProgressListeners) {      try {        listener(payload);      } catch {        // Swallow listener errors      }    }  });   const api: NativeApi = {    dialogs: {      pickFolder: async () => {        if (!window.desktopBridge) return null;        return window.desktopBridge.pickFolder();      },      confirm: async (message) => {        if (window.desktopBridge) {          return window.desktopBridge.confirm(message);        }        return window.confirm(message);      },    },    terminal: {      open: (input) => transport.request(WS_METHODS.terminalOpen, input),      write: (input) => transport.request(WS_METHODS.terminalWrite, input),      resize: (input) => transport.request(WS_METHODS.terminalResize, input),      clear: (input) => transport.request(WS_METHODS.terminalClear, input),      restart: (input) => transport.request(WS_METHODS.terminalRestart, input),      close: (input) => transport.request(WS_METHODS.terminalClose, input),      onEvent: (callback) =>        transport.subscribe(WS_CHANNELS.terminalEvent, (message) => callback(message.data)),    },    projects: {      searchEntries: (input) => transport.request(WS_METHODS.projectsSearchEntries, input),      writeFile: (input) => transport.request(WS_METHODS.projectsWriteFile, input),    },    shell: {      openInEditor: (cwd, editor) =>        transport.request(WS_METHODS.shellOpenInEditor, { cwd, editor }),      openExternal: async (url) => {        if (window.desktopBridge) {          const opened = await window.desktopBridge.openExternal(url);          if (!opened) {            throw new Error("Unable to open link.");          }          return;        }         // Some mobile browsers can return null here even when the tab opens.        // Avoid false negatives and let the browser handle popup policy.        window.open(url, "_blank", "noopener,noreferrer");      },    },    git: {      pull: (input) => transport.request(WS_METHODS.gitPull, input),      status: (input) => transport.request(WS_METHODS.gitStatus, input),      runStackedAction: (input) =>        transport.request(WS_METHODS.gitRunStackedAction, input, { timeoutMs: null }),      listBranches: (input) => transport.request(WS_METHODS.gitListBranches, input),      createWorktree: (input) => transport.request(WS_METHODS.gitCreateWorktree, input),      removeWorktree: (input) => transport.request(WS_METHODS.gitRemoveWorktree, input),      createBranch: (input) => transport.request(WS_METHODS.gitCreateBranch, input),      checkout: (input) => transport.request(WS_METHODS.gitCheckout, input),      init: (input) => transport.request(WS_METHODS.gitInit, input),      resolvePullRequest: (input) => transport.request(WS_METHODS.gitResolvePullRequest, input),      preparePullRequestThread: (input) =>        transport.request(WS_METHODS.gitPreparePullRequestThread, input),      onActionProgress: (callback) => {        gitActionProgressListeners.add(callback);        return () => {          gitActionProgressListeners.delete(callback);        };      },    },    contextMenu: {      show: async <T extends string>(        items: readonly ContextMenuItem<T>[],        position?: { x: number; y: number },      ): Promise<T | null> => {        if (window.desktopBridge) {          return window.desktopBridge.showContextMenu(items, position) as Promise<T | null>;        }        return showContextMenuFallback(items, position);      },    },    server: {      getConfig: () => transport.request(WS_METHODS.serverGetConfig),      upsertKeybinding: (input) => transport.request(WS_METHODS.serverUpsertKeybinding, input),    },    orchestration: {      getSnapshot: () => transport.request(ORCHESTRATION_WS_METHODS.getSnapshot),      dispatchCommand: (command) =>        transport.request(ORCHESTRATION_WS_METHODS.dispatchCommand, { command }),      getTurnDiff: (input) => transport.request(ORCHESTRATION_WS_METHODS.getTurnDiff, input),      getFullThreadDiff: (input) =>        transport.request(ORCHESTRATION_WS_METHODS.getFullThreadDiff, input),      replayEvents: (fromSequenceExclusive) =>        transport.request(ORCHESTRATION_WS_METHODS.replayEvents, { fromSequenceExclusive }),      onDomainEvent: (callback) =>        transport.subscribe(ORCHESTRATION_WS_CHANNELS.domainEvent, (message) =>          callback(message.data),        ),    },  };   instance = { api, transport };  return api;}