Add a single place to initialize Flipper utilitary folders

Summary: We have several folders Flipper uses that sometimes we forget to create before Flipper starts. With this diff we have a single place to initialise the necessary folder structure.

Reviewed By: lblasa

Differential Revision: D37036601

fbshipit-source-id: f945f2bfdfc6be24ba87bd4b13c7fcef3fd74451

desktop/flipper-server-core/src/utils/certificateUtils.tsx

@@ -16,15 +16,15 @@ import {
 import path from 'path';
 import tmp, {FileOptions} from 'tmp';
 import {reportPlatformFailures} from 'flipper-common';
-import os from 'os';
 import {isTest} from 'flipper-common';
+import {flipperDataFolder} from './paths';
 
 const tmpFile = promisify(tmp.file) as (
   options?: FileOptions,
 ) => Promise<string>;
 
 const getFilePath = (fileName: string): string => {
-  return path.resolve(os.homedir(), '.flipper', 'certs', fileName);
+  return path.resolve(flipperDataFolder, 'certs', fileName);
 };
 
 // Desktop file paths

desktop/flipper-server-core/src/utils/paths.tsx

@@ -0,0 +1,18 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+import path from 'path';
+import os from 'os';
+import xdg from 'xdg-basedir';
+
+export const flipperDataFolder = path.resolve(os.homedir(), '.flipper');
+export const flipperSettingsFolder = path.resolve(
+  ...(xdg.config ? [xdg.config] : [os.homedir(), '.config']),
+  'flipper',
+);

desktop/flipper-server-core/src/utils/settings.tsx

@@ -9,9 +9,9 @@
 
 import os from 'os';
 import {resolve} from 'path';
-import xdg from 'xdg-basedir';
 import {Settings, Tristate} from 'flipper-common';
 import {readFile, writeFile, pathExists, mkdirp} from 'fs-extra';
+import {flipperSettingsFolder} from './paths';
 
 export async function loadSettings(
   settingsString: string = '',
@@ -36,21 +36,14 @@ export async function loadSettings(
 }
 
 export async function saveSettings(settings: Settings): Promise<void> {
-  await mkdirp(getSettingsDir());
+  await mkdirp(flipperSettingsFolder);
   await writeFile(getSettingsFile(), JSON.stringify(settings, null, 2), {
     encoding: 'utf8',
   });
 }
 
-function getSettingsDir() {
-  return resolve(
-    ...(xdg.config ? [xdg.config] : [os.homedir(), '.config']),
-    'flipper',
-  );
-}
-
 function getSettingsFile() {
-  return resolve(getSettingsDir(), 'settings.json');
+  return resolve(flipperSettingsFolder, 'settings.json');
 }
 
 export const DEFAULT_ANDROID_SDK_PATH = getDefaultAndroidSdkPath();