refactor: Remove use of localStorage for local settings

Change-Type: minor

lib/gui/app/models/local-settings.js

@@ -16,20 +16,24 @@
 
 'use strict'
 
+const electron = require('electron')
 const Bluebird = require('bluebird')
 const _ = require('lodash')
 const fs = require('fs')
 const path = require('path')
 const os = require('os')
-const Storage = require('./storage')
 
 /**
- * @summary Local storage settings key
+ * @summary Userdata directory path
+ * @description
+ * Defaults to the following:
+ * - `%APPDATA%/etcher` on Windows
+ * - `$XDG_CONFIG_HOME/etcher` or `~/.config/etcher` on Linux
+ * - `~/Library/Application Support/etcher` on macOS
  * @constant
  * @type {String}
  */
-const LOCAL_STORAGE_SETTINGS_KEY = 'etcher-settings'
-const settingsStorage = new Storage(LOCAL_STORAGE_SETTINGS_KEY)
+const USER_DATA_DIR = electron.remote.app.getPath('userData')
 
 /**
  * @summary Local settings filename
@@ -38,10 +42,19 @@ const settingsStorage = new Storage(LOCAL_STORAGE_SETTINGS_KEY)
  */
 const RCFILE = '.etcher.json'
 
+/**
+ * @summary Configuration file path
+ * @type {String}
+ * @constant
+ */
+const HOME_CONFIG_PATH = process.platform === 'win32'
+  ? path.join(USER_DATA_DIR, RCFILE)
+  : path.join(USER_DATA_DIR, 'config.json')
+
 /**
  * @summary Read a local .etcherrc file
  * @function
- * @public
+ * @private
  *
  * @param {String} filename - file path
  * @fulfil {Object} - settings
@@ -68,6 +81,33 @@ const readConfigFile = (filename) => {
   })
 }
 
+/**
+ * @summary Read a local .etcherrc file
+ * @function
+ * @private
+ *
+ * @param {String} filename - file path
+ * @returns {Promise}
+ *
+ * @example
+ * writeConfigFile('.etcherrc', { something: 'good' })
+ *   .then(() => {
+ *     console.log('data written')
+ *   })
+ */
+const writeConfigFile = (filename, data) => {
+  return new Bluebird((resolve, reject) => {
+    const contents = JSON.stringify(data, null, 2)
+    fs.writeFile(filename, contents, (error) => {
+      if (error) {
+        reject(error)
+      } else {
+        resolve()
+      }
+    })
+  })
+}
+
 /**
  * @summary Read all local settings
  * @function
@@ -82,22 +122,7 @@ const readConfigFile = (filename) => {
  * });
  */
 exports.readAll = () => {
-  const homeConfigPath = process.platform === 'win32'
-    ? path.join(os.userInfo().homedir, RCFILE)
-    : path.join(os.userInfo().homedir, '.config', 'etcher', 'config.json')
-  const workdirConfigPath = path.join(process.cwd(), RCFILE)
-  const settings = {}
-  return Bluebird.try(() => {
-    _.merge(settings, settingsStorage.getAll())
-  }).return(readConfigFile(homeConfigPath))
-    .then((homeConfig) => {
-      _.merge(settings, homeConfig)
-    })
-    .return(readConfigFile(workdirConfigPath))
-    .then((workdirConfig) => {
-      _.merge(settings, workdirConfig)
-    })
-    .return(settings)
+  return readConfigFile(HOME_CONFIG_PATH)
 }
 
 /**
@@ -116,9 +141,7 @@ exports.readAll = () => {
  * });
  */
 exports.writeAll = (settings) => {
-  return Bluebird.try(() => {
-    settingsStorage.setAll(settings)
-  })
+  return writeConfigFile(HOME_CONFIG_PATH, settings)
 }
 
 /**
@@ -137,7 +160,8 @@ exports.writeAll = (settings) => {
  * });
  */
 exports.clear = () => {
+  // TODO: Unlink config file
   return Bluebird.try(() => {
-    settingsStorage.clearAll()
+    // settingsStorage.clearAll()
   })
 }

lib/gui/app/models/settings.js

@@ -23,58 +23,32 @@
 const _ = require('lodash')
 const Bluebird = require('bluebird')
 const localSettings = require('./local-settings')
-const store = require('./store')
 const errors = require('../../../shared/errors')
-
-/**
- * @summary Set a settings object
- * @function
- * @private
- *
- * @description
- * Use this function with care, given that it will completely
- * override any existing settings in both the redux store,
- * and the local user configuration.
- *
- * This function is prepared to deal with any local configuration
- * write issues by rolling back to the previous settings if so.
- *
- * @param {Object} settings - settings
- * @returns {Promise}
- *
- * @example
- * setSettingsObject({ foo: 'bar' }).then(() => {
- *   console.log('Done!');
- * });
- */
-const setSettingsObject = (settings) => {
-  const currentSettings = exports.getAll()
-
-  return Bluebird.try(() => {
-    store.dispatch({
-      type: store.Actions.SET_SETTINGS,
-      data: settings
-    })
-  }).then(() => {
-    // Revert the application state if writing the data
-    // to the local machine was not successful
-    return localSettings.writeAll(settings).catch((error) => {
-      store.dispatch({
-        type: store.Actions.SET_SETTINGS,
-        data: currentSettings
-      })
-
-      throw error
-    })
-  })
-}
+const release = require('../../../shared/release')
+const packageJSON = require('../../../../package.json')
 
 /**
  * @summary Default settings
  * @constant
  * @type {Object}
  */
-const DEFAULT_SETTINGS = store.Defaults.get('settings').toJS()
+const DEFAULT_SETTINGS = {
+  unsafeMode: false,
+  errorReporting: true,
+  unmountOnSuccess: true,
+  validateWriteOnSuccess: true,
+  updatesEnabled: packageJSON.updates.enabled && !_.includes([ 'rpm', 'deb' ], packageJSON.packageType),
+  includeUnstableUpdateChannel: !release.isStableRelease(packageJSON.version),
+  lastSleptUpdateNotifier: null,
+  lastSleptUpdateNotifierVersion: null,
+  desktopNotifications: true
+}
+
+/**
+ * @summary Settings state
+ * @type {Object}
+ */
+const settings = _.assign({}, DEFAULT_SETTINGS)
 
 /**
  * @summary Reset settings to their default values
@@ -89,7 +63,8 @@ const DEFAULT_SETTINGS = store.Defaults.get('settings').toJS()
  * });
  */
 exports.reset = () => {
-  return setSettingsObject(DEFAULT_SETTINGS)
+  // TODO: Remove default settings from config file (?)
+  return exports.assign(DEFAULT_SETTINGS)
 }
 
 /**
@@ -107,14 +82,14 @@ exports.reset = () => {
  *   console.log('Done!');
  * });
  */
-exports.assign = (settings) => {
-  if (_.isNil(settings)) {
+exports.assign = (data) => {
+  if (_.isNil(data)) {
     return Bluebird.reject(errors.createError({
       title: 'Missing settings'
     }))
   }
 
-  return setSettingsObject(_.assign(exports.getAll(), settings))
+  return localSettings.writeAll(_.assign(exports.getAll(), data))
 }
 
 /**
@@ -177,7 +152,7 @@ exports.set = (key, value) => {
  * const value = settings.get('unmountOnSuccess');
  */
 exports.get = (key) => {
-  return _.get(exports.getAll(), [ key ])
+  return _.cloneDeep(_.get(settings, [ key ]))
 }
 
 /**
@@ -192,5 +167,5 @@ exports.get = (key) => {
  * console.log(allSettings.unmountOnSuccess);
  */
 exports.getAll = () => {
-  return store.getState().get('settings').toJS()
+  return _.cloneDeep(settings)
 }

lib/gui/app/models/store.js

@@ -23,10 +23,8 @@ const uuidV4 = require('uuid/v4')
 const constraints = require('../../../shared/drive-constraints')
 const supportedFormats = require('../../../shared/supported-formats')
 const errors = require('../../../shared/errors')
-const release = require('../../../shared/release')
 const fileExtensions = require('../../../shared/file-extensions')
 const utils = require('../../../shared/utils')
-const packageJSON = require('../../../../package.json')
 
 /**
  * @summary Verify and throw if any state fields are nil
@@ -95,17 +93,6 @@ const DEFAULT_STATE = Immutable.fromJS({
     percentage: 0,
     speed: 0,
     totalSpeed: 0
-  },
-  settings: {
-    unsafeMode: false,
-    errorReporting: true,
-    unmountOnSuccess: true,
-    validateWriteOnSuccess: true,
-    updatesEnabled: packageJSON.updates.enabled && !_.includes([ 'rpm', 'deb' ], packageJSON.packageType),
-    includeUnstableUpdateChannel: !release.isStableRelease(packageJSON.version),
-    lastSleptUpdateNotifier: null,
-    lastSleptUpdateNotifierVersion: null,
-    desktopNotifications: true
   }
 })
 
@@ -123,8 +110,7 @@ const ACTIONS = _.fromPairs(_.map([
   'SELECT_DRIVE',
   'SELECT_IMAGE',
   'DESELECT_DRIVE',
-  'DESELECT_IMAGE',
-  'SET_SETTINGS'
+  'DESELECT_IMAGE'
 ], (message) => {
   return [ message, message ]
 }))
@@ -512,34 +498,6 @@ const storeReducer = (state = DEFAULT_STATE, action) => {
       return state.deleteIn([ 'selection', 'image' ])
     }
 
-    case ACTIONS.SET_SETTINGS: {
-      // Type: action.data : SettingsObject
-
-      if (!action.data) {
-        throw errors.createError({
-          title: 'Missing settings'
-        })
-      }
-
-      if (!_.isPlainObject(action.data)) {
-        throw errors.createError({
-          title: `Invalid settings: ${action.data}`
-        })
-      }
-
-      const invalidPair = _.find(_.toPairs(action.data), (pair) => {
-        return _.isObject(_.last(pair))
-      })
-
-      if (!_.isNil(invalidPair)) {
-        throw errors.createError({
-          title: `Invalid setting value: ${_.last(invalidPair)} for ${_.first(invalidPair)}`
-        })
-      }
-
-      return state.setIn([ 'settings' ], Immutable.fromJS(action.data))
-    }
-
     default: {
       return state
     }