// Minimal Electron stub for headless Node.js deployment
// Stubs out all Electron APIs so the Koa proxy boots without a display.
const EventEmitter = require('events');
const path = require('path');

const noop = () => {};
const noopAsync = () => Promise.resolve();

const dataDir = process.env.CHAT2API_DATA_DIR || path.join(require('os').homedir(), '.chat2api');

const app = Object.assign(new EventEmitter(), {
  getPath: (name) => {
    const map = { userData: dataDir, appData: dataDir, temp: '/tmp', home: require('os').homedir(), logs: dataDir + '/logs' };
    return map[name] || dataDir;
  },
  getVersion: () => '1.0.0',
  getName: () => 'Chat2API',
  quit: noop,
  exit: noop,
  isPackaged: false,
  isReady: () => true,
  whenReady: () => Promise.resolve(),
  requestSingleInstanceLock: () => true,
  setAppUserModelId: noop,
  setLoginItemSettings: noop,
  dock: { setIcon: noop, hide: noop },
});

// Fire 'ready' asynchronously so listeners registered after require() still fire
setImmediate(() => app.emit('ready', {}, {}));

const ipcMain = Object.assign(new EventEmitter(), {
  handle: noop,
  handleOnce: noop,
  removeHandler: noop,
});

class BrowserWindow extends EventEmitter {
  constructor() { super(); this.webContents = { send: noop, on: noop, once: noop, session: { webRequest: { onBeforeSendHeaders: noop, onHeadersReceived: noop } } }; }
  loadURL() { return Promise.resolve(); }
  loadFile() { return Promise.resolve(); }
  show() {}
  hide() {}
  close() {}
  destroy() {}
  isDestroyed() { return false; }
  setIcon() {}
  setTitle() {}
  setMenu() {}
  center() {}
  focus() {}
  static getAllWindows() { return []; }
  static fromWebContents() { return null; }
}

class Tray extends EventEmitter {
  constructor() { super(); }
  setToolTip() {}
  setContextMenu() {}
  setImage() {}
  destroy() {}
}

const Menu = { buildFromTemplate: () => ({}), setApplicationMenu: noop, getApplicationMenu: () => null };
class MenuItem {}
const nativeImage = { createFromPath: () => ({ isEmpty: () => false }), createEmpty: () => ({ isEmpty: () => true }), createFromDataURL: () => ({}) };
const screen = { getPrimaryDisplay: () => ({ workAreaSize: { width: 1920, height: 1080 }, scaleFactor: 1 }), on: noop };
const globalShortcut = { register: noop, unregisterAll: noop, isRegistered: () => false };
const powerMonitor = new EventEmitter();
const dialog = { showMessageBox: noopAsync, showMessageBoxSync: () => 0, showErrorBox: noop, showOpenDialog: noopAsync };
const shell = { openExternal: noopAsync, openPath: noopAsync };
const clipboard = { writeText: noop, readText: () => '' };
const autoUpdater = Object.assign(new EventEmitter(), { setFeedURL: noop, checkForUpdates: noop, quitAndInstall: noop });
const net = { request: () => { const e = new EventEmitter(); e.end = noop; return e; } };
const session = { defaultSession: { webRequest: { onBeforeSendHeaders: noop } } };
const protocol = { registerFileProtocol: noop, registerHttpProtocol: noop };
const contextBridge = { exposeInMainWorld: noop };
const ipcRenderer = Object.assign(new EventEmitter(), { invoke: noopAsync, send: noop, sendSync: () => null, on: (e,f) => ipcRenderer, once: (e,f) => ipcRenderer });
const crashReporter = { start: noop };
const desktopCapturer = { getSources: noopAsync };
const powerSaveBlocker = { start: () => 1, stop: noop };

module.exports = {
  app, ipcMain, ipcRenderer, BrowserWindow, Tray, Menu, MenuItem,
  nativeImage, screen, globalShortcut, powerMonitor, dialog, shell,
  clipboard, autoUpdater, net, session, protocol, contextBridge,
  crashReporter, desktopCapturer, powerSaveBlocker,
};