BizGaze_Remote/desktop/preload.js

// Minimal, safe bridge into the web UI. Runs with contextIsolation, so it only exposes a
// frozen marker the web app can feature-detect against (e.g. to hide the PWA install prompt
// or prefer native push). No Node APIs are exposed to page JS.
const { contextBridge, ipcRenderer } = require('electron');

// Pull the stable install id + version/os from main (synchronous, one-time at preload).
let info = { installId: '', appVersion: '', os: '' };
try { info = ipcRenderer.sendSync('get-install-info') || info; } catch (_) {}

contextBridge.exposeInMainWorld('__NATIVE__', 'desktop');
contextBridge.exposeInMainWorld('bizConnectNative', Object.freeze({
  platform: 'desktop',
  version: info.appVersion || '0.1.0',
  installId: info.installId || '',
  os: info.os || '',
  // Bring the app window to the foreground (e.g. when a notification is clicked) — the web
  // Notification's window.focus() can't raise an Electron window; the main process must.
  focusApp: () => ipcRenderer.send('focus-window'),
  // Show the unread-chat count as a badge on the taskbar icon. count=number of chats with
  // unread; dataUrl=a small PNG badge the renderer drew (null to clear).
  setUnread: (count, dataUrl) => ipcRenderer.send('set-unread', { count, dataUrl }),
  // Native Windows toast with an inline reply box. Resolves to {text} (replied), {open} (clicked)
  // or null. Lets the user reply to a chat straight from the notification.
  replyNotify: (payload) => ipcRenderer.invoke('reply-notification', payload),
  // Pre-warm the notification DP cache with contact photo URLs (called after chats load) so the first
  // toast from anyone already has their photo — no per-notification download lag.
  precacheAvatars: (urls) => { try { return ipcRenderer.invoke('precache-avatars', urls); } catch (_) { return Promise.resolve(false); } },
  // Ask the shell to show native spelling suggestions for the word at page coords (x,y) — used to bring
  // up corrections on a LEFT click in the message box (not just right-click).
  spellSuggestAt: (x, y) => { try { ipcRenderer.send('spell-suggest', { x, y }); } catch (_) {} },
  // Remote control (screen the local user is sharing): whether OS injection is possible on this machine,
  // arm/disarm the consent gate, and forward a viewer's input event for injection. Injection only happens
  // while armed (the user granted control) — see main.js rcArmed.
  rcAvailable: () => { try { return !!ipcRenderer.sendSync('rc-available'); } catch (_) { return false; } },
  rcArm: (on) => { try { ipcRenderer.send('rc-arm', !!on); } catch (_) {} },
  rcInput: (evt) => { try { ipcRenderer.send('rc-input', evt); } catch (_) {} },
  // Force the newest web build: clears the shell's HTTP cache and reloads ignoring cache. The app closes
  // to tray and can run for weeks, so without this it would keep serving the page it first loaded.
  hardReload: () => { try { return ipcRenderer.invoke('hard-reload'); } catch (_) { return Promise.resolve(false); } },
  // Manual "Check for updates" from Settings. Resolves {status:'available'|'current'|'dev'|'error', version?}.
  // On 'available' the shell downloads in the background and prompts to restart when ready.
  checkForUpdates: () => ipcRenderer.invoke('check-updates'),
  // #3: subscribe to auto-update lifecycle events so the UI can show download progress + "ready".
  // cb receives {phase:'checking'|'available'|'downloading'|'ready'|'current'|'error', percent?, version?}.
  onUpdateEvent: (cb) => { try { ipcRenderer.on('update-event', (_e, data) => { try { cb(data); } catch (_) {} }); } catch (_) {} },
  onDownloadDone: (cb) => { try { ipcRenderer.on('download-done', (_e, data) => { try { cb(data); } catch (_) {} }); } catch (_) {} }, // desktop: a file finished downloading to the Downloads folder → show a toast
  restartToUpdate: () => ipcRenderer.invoke('restart-to-update'),
}));