Add setting for skipping fbsource version check

Summary: Added a setting "Match local fbsource chekout", which inverserly corresponds to the `ignore_local_pin` setting in `flipper-launcher.toml`.

Reviewed By: passy

Differential Revision: D19030456

fbshipit-source-id: deaaf4e873a00bbc4e8bd3034353cf580df95a36

src/utils/launcher.tsx

@@ -7,9 +7,28 @@
  * @format
  */
 
+import path from 'path';
+import os from 'os';
+import xdg from 'xdg-basedir';
 import {ProcessConfig} from './processConfig';
 import {Store} from '../reducers/index';
 
+// There is some disagreement among the XDG Base Directory implementations
+// whether to use ~/Library/Preferences or ~/.config on MacOS. The Launcher
+// expects the former, whereas `xdg-basedir` implements the latter.
+const xdgConfigDir = () =>
+  os.platform() === 'darwin'
+    ? path.join(os.homedir(), 'Library', 'Preferences')
+    : xdg.config || path.join(os.homedir(), '.config');
+
+export const launcherConfigDir = () =>
+  path.join(
+    xdgConfigDir(),
+    os.platform() == 'darwin'
+      ? 'rs.flipper-launcher.flipper-launcher'
+      : 'flipper-launcher',
+  );
+
 export function initLauncherHooks(config: ProcessConfig, store: Store) {
   if (config.launcherMsg) {
     store.dispatch({

src/utils/launcherSettingsStorage.tsx

@@ -0,0 +1,79 @@
+/**
+ * Copyright (c) Facebook, Inc. and its 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 fs from 'fs';
+import path from 'path';
+import TOML from '@iarna/toml';
+import {Storage} from 'redux-persist/es/types';
+import {
+  defaultLauncherSettings,
+  LauncherSettings,
+} from '../reducers/launcherSettings';
+
+export default class LauncherSettingsStorage implements Storage {
+  constructor(readonly filepath: string) {}
+
+  async getItem(_key: string): Promise<any> {
+    return await this.parseFile();
+  }
+
+  async setItem(_key: string, value: LauncherSettings): Promise<any> {
+    const originalValue = await this.parseFile();
+    await this.writeFile(value);
+    return originalValue;
+  }
+
+  removeItem(_key: string): Promise<void> {
+    return this.writeFile(defaultLauncherSettings);
+  }
+
+  private async parseFile(): Promise<LauncherSettings> {
+    try {
+      const content = fs.readFileSync(this.filepath).toString();
+      return deserialize(content);
+    } catch (e) {
+      console.warn(
+        `Failed to read settings file: "${this.filepath}". ${e}. Replacing file with default settings.`,
+      );
+      await this.writeFile(defaultLauncherSettings);
+      return defaultLauncherSettings;
+    }
+  }
+
+  private async writeFile(value: LauncherSettings): Promise<void> {
+    this.ensureDirExists();
+    const content = serialize(value);
+    fs.writeFileSync(this.filepath, content);
+  }
+
+  private ensureDirExists(): void {
+    const dir = path.dirname(this.filepath);
+    fs.existsSync(dir) || fs.mkdirSync(dir, {recursive: true});
+  }
+}
+
+interface FormattedSettings {
+  ignore_local_pin?: boolean;
+}
+
+function serialize(value: LauncherSettings): string {
+  const {ignoreLocalPin, ...rest} = value;
+  return TOML.stringify({
+    ...rest,
+    ignore_local_pin: ignoreLocalPin,
+  });
+}
+
+function deserialize(content: string): LauncherSettings {
+  const {ignore_local_pin, ...rest} = TOML.parse(content) as FormattedSettings;
+  return {
+    ...rest,
+    ignoreLocalPin: !!ignore_local_pin,
+  };
+}