Convert the electron builder config from yaml to js file

Having a js file will enable further customization of the build process.
That capability will be used notably for #6535 to download `WinFSP` installer when building the Windows installer.

client/electron/package.js

@@ -0,0 +1,115 @@
+// Parsec Cloud (https://parsec.cloud) Copyright (c) BUSL-1.1 2016-present Scille SAS
+
+const builder = require('electron-builder');
+
+/**
+ * @returns {{
+ *   mode: 'test' | 'prod',
+ *   platform: 'linux' | 'win32' | 'darwin',
+ * }}
+ */
+function cli() {
+  const { Command, Option } = require('commander');
+  const program = new Command();
+
+  program.name('electron-packager').description('Package the electron app');
+
+  program.addOption(new Option('--mode <mode>', 'package mode').choices(['test', 'prod']).default('test').makeOptionMandatory(true));
+  program.addOption(
+    new Option('--platform <platform>', 'Build electron for <platform>')
+      .choices(['linux', 'win32', 'darwin'])
+      .default(process.platform)
+      .makeOptionMandatory(true),
+  );
+
+  program.parse();
+  return program.opts();
+}
+
+/**
+ * @param {string} platform
+ * @return {Map<builder.Platform, Map<builder.Arch, string[]>>}
+ */
+function getBuildTargets(platform) {
+  switch (platform) {
+    case 'linux':
+      return builder.Platform.LINUX.createTarget();
+    case 'darwin':
+      return builder.Platform.MAC.createTarget();
+    case 'win32':
+      return builder.Platform.WINDOWS.createTarget();
+    default:
+      throw new Error(`Unknown platform: ${platform}`);
+  }
+}
+const OPTS = cli();
+console.debug(OPTS);
+
+const BUILD_TARGETS = getBuildTargets(OPTS.platform);
+console.log('BUILD_TARGETS', BUILD_TARGETS);
+
+const PARSEC_SCHEME = 'parsec3';
+
+/**
+ * @type {import('electron-builder').Configuration}
+ * @see https://www.electron.build/configuration/configuration
+ */
+const options = {
+  appId: 'cloud.parsec.parsec-v3',
+  protocols: {
+    name: 'Parsec-v3',
+    schemes: [PARSEC_SCHEME],
+  },
+
+  compression: OPTS.mode === 'test' ? 'store' : 'normal',
+
+  directories: {
+    buildResources: 'assets',
+  },
+
+  files: ['assets/**/*', 'build/**/*', 'app/**/*'],
+
+  publish: {
+    provider: 'github',
+  },
+
+  nsis: {
+    allowElevation: true,
+    oneClick: false,
+    allowToChangeInstallationDirectory: true,
+  },
+
+  win: {
+    target: 'nsis',
+  },
+
+  mac: {
+    target: 'dmg',
+    category: 'public.app-category.productivity',
+  },
+
+  linux: {
+    synopsis: 'Secure cloud framework',
+    description: 'Parsec is an open-source cloud-based application that allow simple yet cryptographically secure file hosting.',
+    category: 'Office Network FileTransfer FileSystem Security',
+    desktop: {
+      MimeType: `x-scheme-handler/${PARSEC_SCHEME}`,
+    },
+    target: 'snap',
+  },
+
+  snap: {
+    base: 'core22',
+    grade: 'devel',
+    allowNativeWayland: true,
+    stagePackages: ['default', 'fuse3'],
+  },
+
+  extends: null,
+};
+
+builder.build({
+  targets: BUILD_TARGETS,
+  publish: 'never',
+  config: options,
+});

client/electron/package.json

@@ -1,5 +1,5 @@
 {
-    "name": "parsec-v3-alpha",
+    "name": "parsec-v3",
     "version": "3.0.0-a.0+dev",
     "description": "Parsec.cloud",
     "author": {
@@ -17,7 +17,7 @@
         "build": "npm run libparsec:copy && tsc",
         "electron:start-live": "npm run build && node ./live-runner.js",
         "electron:start": "npm run build && electron --inspect=5858 ./",
-        "electron:release": "npm run build && npx electron-builder build --config ./electron-builder.config.yml --publish never"
+        "electron:release": "npm run build && node package.js --mode prod"
     },
     "dependencies": {
         "@capacitor-community/electron": "^5.0.1",
@@ -29,6 +29,7 @@
         "electron-window-state": "~5.0.3"
     },
     "devDependencies": {
+        "commander": "^12.0.0",
         "electron": "^28.1.3",
         "electron-builder": "~24.9.1",
         "typescript": "~5.3.3"