Make saving the configuration more robust (#594)

* feat: Make saving the configuration more robust

* parse backup user config before return

* fix some bug

* Add write-userconfig.js and invalid-config.bin

* throw exception if failed user config parsing

* Merge branch 'master' into feat-467-make-save-more-robust

* hide keymaps and macros if agent in restore mode

* fix Device name settings

packages/uhk-agent/src/util/backup-user-confoguration.ts

@@ -0,0 +1,32 @@
+import { app } from 'electron';
+import { LogService, UserConfiguration, SaveUserConfigurationData } from 'uhk-common';
+import * as path from 'path';
+import * as fs from 'fs-extra';
+
+export const getBackupUserConfigurationPath = (uniqueId: number): string => {
+    const appDataDir = app.getPath('userData');
+
+    return path.join(appDataDir, `${uniqueId}.json`);
+};
+
+export const backupUserConfiguration = (data: SaveUserConfigurationData): Promise<void> => {
+    const backupFilePath = getBackupUserConfigurationPath(data.uniqueId);
+    return fs.writeJSON(backupFilePath, data.configuration, {spaces: 2});
+};
+
+export const getBackupUserConfigurationContent = async (logService: LogService, uniqueId: number): Promise<UserConfiguration> => {
+    try {
+        const backupFilePath = getBackupUserConfigurationPath(uniqueId);
+
+        if (await fs.pathExists(backupFilePath)) {
+            const json = await fs.readJSON(backupFilePath);
+            new UserConfiguration().fromJsonObject(json);
+
+            return json;
+        }
+
+        return null;
+    } catch (error) {
+        logService.error('Can not load backup user configuration for device', {uniqueId, error});
+    }
+};