// Biz Connect — technician desktop client (Electron main process).
//
// This is a thin shell: it loads the live Connect web UI from the server origin, so every
// relative /api and /ws URL in the web app keeps working unchanged. What it adds over a
// browser tab:
//   - native full-screen capture for "Share Screen" (setDisplayMediaRequestHandler)
//   - a real desktop window (no browser chrome), persisted login session
//   - external links open in the user's browser, not inside the app
//
// Server origin is configurable so the same build works against prod or a dev server.
const { app, BrowserWindow, session, desktopCapturer, shell, Menu } = require('electron');
const path = require('path');

const SERVER_URL = (process.env.SERVER_URL || 'https://remote.bizgaze.com').replace(/\/+$/, '');

let win;

function createWindow() {
  win = new BrowserWindow({
    width: 1200,
    height: 800,
    minWidth: 880,
    minHeight: 600,
    title: 'Biz Connect',
    backgroundColor: '#0f1830',
    webPreferences: {
      preload: path.join(__dirname, 'preload.js'),
      contextIsolation: true,
      nodeIntegration: false,
      // Persist cookies/localStorage so the technician stays logged in between launches.
      partition: 'persist:bizconnect',
    },
  });

  win.loadURL(SERVER_URL + '/home');

  // Open target=_blank / external links in the system browser instead of a new Electron window.
  win.webContents.setWindowOpenHandler(({ url }) => {
    if (!url.startsWith(SERVER_URL)) { shell.openExternal(url); return { action: 'deny' }; }
    return { action: 'allow' };
  });
}

// Electron requires an explicit handler for getDisplayMedia(); without it the web UI's
// "Share Screen" silently fails. Default to the primary display with loopback audio.
// A production build can swap this for a source-picker window.
function registerDisplayMediaHandler() {
  session.fromPartition('persist:bizconnect').setDisplayMediaRequestHandler((request, callback) => {
    desktopCapturer.getSources({ types: ['screen', 'window'] }).then((sources) => {
      callback(sources.length ? { video: sources[0], audio: 'loopback' } : {});
    }).catch(() => callback({}));
  });
}

app.whenReady().then(() => {
  registerDisplayMediaHandler();
  createWindow();
  Menu.setApplicationMenu(null); // hide the default menu bar; the web UI is the chrome
  app.on('activate', () => { if (BrowserWindow.getAllWindows().length === 0) createWindow(); });
});

app.on('window-all-closed', () => { if (process.platform !== 'darwin') app.quit(); });