Fix: Fixed ArgumentException in CommandManager.OverwriteKeyBindings

src/Files.App/Data/Commands/Manager/CommandManager.cs

@@ -4,6 +4,7 @@
 using System.Collections.Frozen;
 using System.Collections.Immutable;
 using Files.App.Actions;
+using Microsoft.Extensions.Logging;
 
 namespace Files.App.Data.Commands
 {
@@ -391,25 +392,26 @@ public IEnumerator<IRichCommand> GetEnumerator() =>
 		/// </summary>
 		private void OverwriteKeyBindings()
 		{
+			var allCommands = commands.Values.OfType<ActionCommand>();
+
 			if (ActionsSettingsService.ActionsV2 is null)
 			{
-				foreach (var command in commands.Values.OfType<ActionCommand>())
-				{
-					command.RestoreKeyBindings();
-				}
+				allCommands.ForEach(x => x.RestoreKeyBindings());
 			}
 			else
 			{
-				foreach (var command in commands.Values.OfType<ActionCommand>())
+				foreach (var command in allCommands)
 				{
 					var customizedKeyBindings = ActionsSettingsService.ActionsV2.FindAll(x => x.CommandCode == command.Code.ToString());
 
 					if (customizedKeyBindings.IsEmpty())
 					{
+						// Could not find customized key bindings for the command
 						command.RestoreKeyBindings();
 					}
 					else if (customizedKeyBindings.Count == 1 && customizedKeyBindings[0].KeyBinding == string.Empty)
 					{
+						// Do not assign any key binding even though there're default keys pre-defined
 						command.OverwriteKeyBindings(HotKeyCollection.Empty);
 					}
 					else
@@ -420,9 +422,62 @@ private void OverwriteKeyBindings()
 				}
 			}
 
-			_allKeyBindings = commands.Values
-				.SelectMany(command => command.HotKeys, (command, hotKey) => (Command: command, HotKey: hotKey))
-				.ToImmutableDictionary(item => item.HotKey, item => item.Command);
+			try
+			{
+				// Set collection of a set of command code and key bindings to dictionary
+				_allKeyBindings = commands.Values
+					.SelectMany(command => command.HotKeys, (command, hotKey) => (Command: command, HotKey: hotKey))
+					.ToImmutableDictionary(item => item.HotKey, item => item.Command);
+			}
+			catch (ArgumentException ex)
+			{
+				// The keys are not necessarily all different because they can be set manually in text editor
+				// ISSUE: https://github.com/files-community/Files/issues/15331
+
+				var flat = commands.Values.SelectMany(x => x.HotKeys).Select(x => x.LocalizedLabel);
+				var duplicates = flat.GroupBy(x => x).Where(x => x.Count() > 1).Select(group => group.Key);
+
+				foreach (var item in duplicates)
+				{
+					if (!string.IsNullOrEmpty(item))
+					{
+						var occurrences = allCommands.Where(x => x.HotKeys.Select(x => x.LocalizedLabel).Contains(item));
+
+						// Restore the defaults for all occurrences in our cache
+						occurrences.ForEach(x => x.RestoreKeyBindings());
+
+						// Get all customized key bindings from user settings json
+						var actions =
+							ActionsSettingsService.ActionsV2 is not null
+								? new List<ActionWithParameterItem>(ActionsSettingsService.ActionsV2)
+								: [];
+
+						// Remove the duplicated key binding from user settings JSON file
+						actions.RemoveAll(x => x.KeyBinding.Contains(item));
+
+						// Reset
+						ActionsSettingsService.ActionsV2 = actions;
+					}
+				}
+
+				// Set collection of a set of command code and key bindings to dictionary
+				_allKeyBindings = commands.Values
+					.SelectMany(command => command.HotKeys, (command, hotKey) => (Command: command, HotKey: hotKey))
+					.ToImmutableDictionary(item => item.HotKey, item => item.Command);
+
+				App.Logger.LogWarning(ex, "The app found some keys in different commands are duplicated and are using default key bindings for those commands.");
+			}
+			catch (Exception ex)
+			{
+				allCommands.ForEach(x => x.RestoreKeyBindings());
+
+				// Set collection of a set of command code and key bindings to dictionary
+				_allKeyBindings = commands.Values
+					.SelectMany(command => command.HotKeys, (command, hotKey) => (Command: command, HotKey: hotKey))
+					.ToImmutableDictionary(item => item.HotKey, item => item.Command);
+
+				App.Logger.LogWarning(ex, "The app is temporarily using default key bindings for all because of a serious error of assigning custom keys.");
+			}
 		}
 
 		public static HotKeyCollection GetDefaultKeyBindings(IAction action)