UI: Fix negative space savings in XCI trimmer

src/Ryujinx/Common/LocaleManager.cs

@@ -143,12 +143,8 @@ namespace Ryujinx.Ava.Common.Locale
             LocaleChanged?.Invoke();
         }
 
-        #nullable enable
-
         private static LocalesJson? _localeData;
 
-        #nullable disable
-
         private static Dictionary<LocaleKeys, string> LoadJsonLanguage(string languageCode)
         {
             var localeStrings = new Dictionary<LocaleKeys, string>();
@@ -158,18 +154,28 @@ namespace Ryujinx.Ava.Common.Locale
 
             foreach (LocalesEntry locale in _localeData.Value.Locales)
             {
-                if (locale.Translations.Count != _localeData.Value.Languages.Count)
+                if (locale.Translations.Count < _localeData.Value.Languages.Count)
                 {
                     throw new Exception($"Locale key {{{locale.ID}}} is missing languages! Has {locale.Translations.Count} translations, expected {_localeData.Value.Languages.Count}!");
                 } 
                 
+                if (locale.Translations.Count > _localeData.Value.Languages.Count)
+                {
+                    throw new Exception($"Locale key {{{locale.ID}}} has too many languages! Has {locale.Translations.Count} translations, expected {_localeData.Value.Languages.Count}!");
+                }
+
                 if (!Enum.TryParse<LocaleKeys>(locale.ID, out var localeKey))
                     continue;
 
                 localeStrings[localeKey] =
-                    locale.Translations.TryGetValue(languageCode, out string val) && val != string.Empty
+                    locale.Translations.TryGetValue(languageCode, out string val) && !string.IsNullOrEmpty(val)
                         ? val
                         : locale.Translations[DefaultLanguageCode];
+
+                if (string.IsNullOrEmpty(localeStrings[localeKey]))
+                {
+                    throw new Exception($"Locale key '{locale.ID}' has no valid translations for desired language {languageCode}! {DefaultLanguageCode} is an empty string or null");
+                }
             }
 
             return localeStrings;

src/Ryujinx/UI/Helpers/XCITrimmerFileSpaceSavingsConverter.cs

@@ -1,6 +1,7 @@
 using Avalonia;
 using Avalonia.Data;
 using Avalonia.Data.Converters;
+using Gommon;
 using Ryujinx.Ava.Common.Locale;
 using Ryujinx.UI.Common.Models;
 using System;
@@ -32,11 +33,11 @@ namespace Ryujinx.Ava.UI.Helpers
 
             if (app.CurrentSavingsB < app.PotentialSavingsB)
             {
-                return LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys.TitleXCICanSaveLabel, (app.PotentialSavingsB - app.CurrentSavingsB) / _bytesPerMB);
+                return LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys.TitleXCICanSaveLabel, ((app.PotentialSavingsB - app.CurrentSavingsB) / _bytesPerMB).CoerceAtLeast(0));
             }
             else
             {
-                return LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys.TitleXCISavingLabel, app.CurrentSavingsB / _bytesPerMB);
+                return LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys.TitleXCISavingLabel, (app.CurrentSavingsB / _bytesPerMB).CoerceAtLeast(0));
             }
         }
 

src/Ryujinx/UI/ViewModels/XCITrimmerViewModel.cs

@@ -364,7 +364,7 @@ namespace Ryujinx.Ava.UI.ViewModels
                     value = _processingApplication.Value with { PercentageProgress = null };
 
                 if (value.HasValue)
-                    _displayedXCIFiles.ReplaceWith(value.Value);
+                    _displayedXCIFiles.ReplaceWith(value);
 
                 _processingApplication = value;
                 OnPropertyChanged();