preferences.js

const path = require('path');
const { app, BrowserWindow, Menu } = require('electron');  // eslint-disable-line
const fs = require('fs-extra');

const appPath = app.getAppPath();
const settingsPath = path.join(app.getPath('userData'), 'preferences.json');

// A list of menu item IDs to disable when preference window is open.
const nonPrefWindowItems = [
  'find-menu-item',
];

let prefWindow = null;
let mainWindow = null;

const setMainWindow = (win) => {
  mainWindow = win;
};

const getCurrentPreferences = () => {
  // Ensure we have the settings file created.
  fs.ensureFileSync(settingsPath);

  const preferences = {
    theme: 'Cyborg',
    indexes: {
      externalIds: true,
      lookups: true,
      picklists: true,
    },
    picklists: {
      type: 'enum',
      unrestricted: true,
      ensureBlanks: true,
    },
    lookups: {
      type: 'char(18)',
    },
    defaults: {
      attemptSFValues: false,
      textEmptyString: false,
      checkboxDefaultFalse: true,
      suppressReadOnly: false,
      suppressAudit: false,
    },
  };

  // Load any existing values.
  let settingsData = {};
  try {
    settingsData = JSON.parse(fs.readFileSync(settingsPath));
  } catch (err) {
    // Catch and release, we'll just use the defaults from there.
  }

  // Merge in settings that in the file an we know how to use.
  const values = Object.getOwnPropertyNames(preferences);
  for (let i = 0; i < values.length; i += 1) {
    if (Object.prototype.hasOwnProperty.call(settingsData, values[i])) {
      preferences[values[i]] = settingsData[values[i]];
    }
  }
  return preferences;
};

const loadPreferences = () => {
  // Get our defaults.
  const preferences = getCurrentPreferences();
  prefWindow.webContents.send('preferences_data', preferences);
};

const savePreferences = (event, settingData) => {
  const preferences = getCurrentPreferences();

  // Merge in settings that in the file an we know how to use.
  const values = Object.getOwnPropertyNames(preferences);
  for (let i = 0; i < values.length; i += 1) {
    if (Object.prototype.hasOwnProperty.call(settingData, values[i])) {
      preferences[values[i]] = settingData[values[i]];
    }
  }
  fs.writeFileSync(settingsPath, JSON.stringify(preferences));
};

const closePreferences = () => {
  if (prefWindow) {
    prefWindow.close();
  }
  if (mainWindow) {
    mainWindow.webContents.send('current_preferences', getCurrentPreferences());
  }

  // Enable menu items that don't work in this context:
  const appMenu = Menu.getApplicationMenu();
  nonPrefWindowItems.forEach((element) => {
    appMenu.getMenuItemById(element).enabled = true;
  });
};

const openPreferences = () => {
  const htmlPath = `file://${appPath}/app/preferences.html`;
  if (!prefWindow || prefWindow.isDestroyed()) {
    prefWindow = new BrowserWindow({
      width: 550,
      height: 730,
      resizable: false,
      frame: false,
      webPreferences: {
        contextIsolation: true, // Enabling contextIsolation to protect against prototype pollution.
        disableBlinkFeatures: 'Auxclick', // See: https://github.com/doyensec/electronegativity/wiki/AUXCLICK_JS_CHECK
        enableRemoteModule: false, // Turn off remote to avoid temptation.
        nodeIntegration: false, // Disable nodeIntegration for security.
        nodeIntegrationInWorker: false,
        nodeIntegrationInSubFrames: false,
        worldSafeExecuteJavaScript: true, // https://github.com/electron/electron/pull/24712
        preload: path.join(appPath, 'app/preferencesPreload.js'),
      },
    });
  }

  // Disable menu items that don't work in this context:
  const appMenu = Menu.getApplicationMenu();
  nonPrefWindowItems.forEach((element) => {
    appMenu.getMenuItemById(element).enabled = false;
  });

  // Display the window.
  prefWindow.loadURL(htmlPath);
  prefWindow.setMenuBarVisibility(false);
  prefWindow.show();
};

exports.setMainWindow = setMainWindow;
exports.getCurrentPreferences = getCurrentPreferences;
exports.openPreferences = openPreferences;
exports.loadPreferences = loadPreferences;
exports.savePreferences = savePreferences;
exports.closePreferences = closePreferences;