1  // Copyright (c) Microsoft Corporation
 2  // The Microsoft Corporation licenses this file to you under the MIT license.
 3  // See the LICENSE file in the project root for more information.
 4  
 5  using System;
 6  using System.Reflection;
 7  
 8  using Settings.UI.Library.Attributes;
 9  
10  namespace Microsoft.PowerToys.Settings.UI.Library;
11  
12  /// <summary>
13  /// This user flow allows DSC resources to use PowerToys.Settings executable to set settings values by suppling them from command line using the following syntax:
14  /// PowerToys.Settings.exe set <module struct name>.<field name> <field_value>
15  ///
16  /// Example: PowerToys.Settings.exe set MeasureTool.MeasureCrossColor "#00FF00"
17  /// </summary>
18  public sealed class SetSettingCommandLineCommand
19  {
20      private static readonly char[] SettingNameSeparator = { '.' };
21  
22      private static (string ModuleName, string PropertyName) ParseSettingName(string settingName)
23      {
24          var parts = settingName.Split(SettingNameSeparator, 2, StringSplitOptions.RemoveEmptyEntries);
25          return (parts[0], parts[1]);
26      }
27  
28      public static void Execute(string settingName, string settingValue, SettingsUtils settingsUtils)
29      {
30          Assembly settingsLibraryAssembly = CommandLineUtils.GetSettingsAssembly();
31  
32          var (moduleName, propertyName) = ParseSettingName(settingName);
33  
34          var settingsConfig = CommandLineUtils.GetSettingsConfigFor(moduleName, settingsUtils, settingsLibraryAssembly);
35  
36          var propertyInfo = CommandLineUtils.GetSettingPropertyInfo(propertyName, settingsConfig);
37          if (propertyInfo == null)
38          {
39              throw new ArgumentException($"Property '{propertyName}' wasn't found");
40          }
41  
42          if (propertyInfo.PropertyType.GetCustomAttribute<CmdConfigureIgnoreAttribute>() != null)
43          {
44              throw new ArgumentException($"Property '{propertyName}' is explicitly ignored");
45          }
46  
47          // Execute settingsConfig.Properties.<propertyName> = settingValue
48          var propertyValue = ICmdLineRepresentable.ParseFor(propertyInfo.PropertyType, settingValue);
49          var (settingInfo, properties) = CommandLineUtils.LocateSetting(propertyName, settingsConfig);
50          settingInfo.SetValue(properties, propertyValue);
51  
52          settingsUtils.SaveSettings(settingsConfig.ToJsonString(), settingsConfig.GetModuleName());
53      }
54  }