feat(localization): add resource-based localization foundation - #421
feat(localization): add resource-based localization foundation#421OmarAglan wants to merge 2 commits into
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📝 WalkthroughSummary by CodeRabbit
WalkthroughAdds a resource-based localization framework with English fallback, satellite-culture discovery, runtime culture switching, dependency-injection registration, live Avalonia bindings, tests, and documentation. ChangesLocalization framework
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: 🟡 Moderate · up to The PR may fail the configured quality gate, and application-level localized values can render as literal keys and miss live culture updates if they are evaluated before service registration. Merge readiness is moderate until the complexity violation and initialization-order issue are corrected. Sequence Diagram(s)sequenceDiagram
participant App
participant LocalizationService
participant ResourceManager
participant Avalonia
App->>LocalizationService: Resolve service during initialization
App->>Avalonia: Register LocalizationService as LocalizationService
Avalonia->>LocalizationService: Request localized key
LocalizationService->>ResourceManager: Load value for CurrentCulture
ResourceManager-->>LocalizationService: Return translation or fallback
LocalizationService-->>Avalonia: Return localized string
App->>LocalizationService: SetCulture(new culture)
LocalizationService-->>Avalonia: Raise CurrentCulture and Item[] notifications
Avalonia->>LocalizationService: Refresh bound value
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✨ Finishing Touches 💡 1🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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PR Summary by QodoAdd resource-based localization foundation (service, DI, Avalonia binding, docs, tests)
AI Description
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High-Level Assessment
Files changed (19)
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Actionable comments posted: 2
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Inline comments:
In `@GenHub/GenHub/App.axaml.cs`:
- Line 53: Move the localization service registration in the App initialization
flow before AvaloniaXamlLoader.Load(this) evaluates application XAML, ensuring
LocalizeExtension can resolve it and remain refreshable on culture changes. Add
a regression test covering LocalizeExtension usage from application-level XAML.
In `@GenHub/GenHub/Common/Services/LocalizationService.cs`:
- Around line 131-209: Reduce the cognitive complexity of
DiscoverAvailableCultures by extracting per-directory satellite validation,
including culture parsing, resource-set checks, deduplication, and related
warnings, into a private helper method. Keep directory enumeration and outer
scan exception handling in DiscoverAvailableCultures, and preserve the existing
culture list and logging behavior.
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📒 Files selected for processing (19)
GenHub/GenHub.Core/Constants/LocalizationConstants.csGenHub/GenHub.Core/Interfaces/Common/ILocalizationService.csGenHub/GenHub.Tests/GenHub.Tests.Core/App/AppLifecycleTests.csGenHub/GenHub.Tests/GenHub.Tests.Core/Collections/LocalizationCultureCollection.csGenHub/GenHub.Tests/GenHub.Tests.Core/Common/Services/LocalizationServiceTests.csGenHub/GenHub.Tests/GenHub.Tests.Core/Infrastructure/DependencyInjection/LocalizationModuleTests.csGenHub/GenHub.Tests/GenHub.Tests.Core/Resources/Localization/TestStrings.fr.resxGenHub/GenHub.Tests/GenHub.Tests.Core/Resources/Localization/TestStrings.resxGenHub/GenHub/App.axaml.csGenHub/GenHub/Common/Markup/LocalizeExtension.csGenHub/GenHub/Common/Services/LocalizationResources.csGenHub/GenHub/Common/Services/LocalizationService.csGenHub/GenHub/Infrastructure/DependencyInjection/AppServices.csGenHub/GenHub/Infrastructure/DependencyInjection/LocalizationModule.csGenHub/GenHub/Properties/AssemblyInfo.csGenHub/GenHub/Resources/Localization/Strings.resxdocs/dev/constants.mddocs/dev/index.mddocs/dev/localization.md
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Code Review by Qodo
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| /// Creates a live one-way binding to a localized resource key. | ||
| /// </summary> | ||
| /// <param name="key">The resource key to bind.</param> | ||
| public sealed class LocalizeExtension(string key) |
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CRITICAL: LocalizeExtension is not an Avalonia markup extension — the documented {localization:Localize ...} usage cannot work
ProvideValue() (line 26) is a plain parameterless method and the class implements neither Avalonia.Markup.IMarkupExtension nor IMarkupExtension<T>. Avalonia's XAML compiler only invokes a type used in {...} extension syntax through the IMarkupExtension contract, whose method is ProvideValue(IServiceProvider). Without the interface, {localization:Localize Settings.Appearance.Title} — the exact example in docs/dev/localization.md:61 — instantiates the class and uses the instance itself as the value, so assigning it to a string property such as TextBlock.Text is a XAML compile error, and ProvideValue() is never invoked at runtime either. No view or test in this PR exercises the extension, so CI cannot catch this — the foundation's central deliverable is dead code as shipped.
Fix:
public sealed class LocalizeExtension(string key) : IMarkupExtension<object>
{
public object ProvideValue(IServiceProvider serviceProvider) => /* existing body */;
}Reply with @kilocode-bot fix it to have Kilo Code address this issue.
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| private static CultureInfo ApplyThreadCulture(CultureInfo culture) | ||
| { | ||
| CultureInfo.CurrentCulture = culture; |
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WARNING: ApplyThreadCulture mutates process-wide formatting culture with no revert path, silently changing unrelated parse/format behavior
SetCulture sets CurrentCulture/CurrentUICulture and the DefaultThreadCurrent* defaults for every future thread. This conflates UI language with regional formatting, and there is no way to restore the previous values. Concrete mid-session breakage once a comma-decimal culture ships: SettingsViewModel.cs:333 writes value.ToString("F1") while SettingsViewModel.cs:407 re-reads it with culture-less double.TryParse, so text like 1024.5 silently stops updating the setting after a switch to e.g. de; ProfileColorToOpacityConverter.cs:21 parses converter parameters like "0.8" with double.TryParse and silently falls back to opacity 1.0; current-culture date parsing in ModDBResolver/CNCLabsMapResolver changes how external scraped data is interpreted. Already-running thread-pool threads also keep their old culture, so UI and background formatting diverge after a switch. Unless changing the format culture is an explicit product decision, restrict switching to CurrentUICulture/DefaultThreadCurrentUICulture (resource lookup only), and document the side effect in docs/dev/localization.md.
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| try | ||
| { | ||
| var culture = CultureInfo.GetCultureInfo(cultureName); | ||
| if (localizationResources.ResourceManager.GetResourceSet( |
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WARNING: A corrupt satellite assembly crashes app startup, and file-level load failures abort discovery of all remaining cultures
GetResourceSet(..., createIfNotExists: true, ...) at this line forces the satellite assembly to load. A corrupt or ABI-incompatible satellite throws BadImageFormatException, which none of the per-directory handlers (CultureNotFoundException, MissingManifestResourceException, MissingSatelliteAssemblyException) nor the outer handlers (DirectoryNotFoundException, IOException, UnauthorizedAccessException) catch — it escapes the _availableCultures field initializer, so DI singleton resolution in the composition root throws and the app fails to start. Separately, per-file load errors such as FileLoadException (an IOException) are only caught by the outer handler, which abandons every remaining culture directory instead of skipping just the bad one. Catch assembly/file-level failures per directory so a single bad satellite degrades to a logged warning.
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| return Key; | ||
| } | ||
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| return new Binding($"[{Key}]", BindingMode.OneWay) |
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WARNING: Dotted-key binding path is unverified and FallbackValue = Key masks binding-infrastructure failures
Two silent-failure modes here. First, the documented key convention is dot-separated (Settings.Appearance.Title, docs/dev/localization.md), but nothing verifies Avalonia's binding-path grammar treats dots inside the [...] indexer argument as literal key content rather than a property separator — there is no consuming view and no runtime binding test in this PR, so a path-parse rejection would only surface once string migration starts. Second, FallbackValue = Key (line 39) only fires when the binding infrastructure itself fails (the service already returns the key for missing resources), so a systematic failure — rejected path, or the service absent from Application.Resources — renders raw keys with no log, indistinguishable from a typo'd key. Add a headless binding test using a dotted key before migration work builds on this.
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| /// <param name="key">The resource key to resolve.</param> | ||
| /// <param name="arguments">Optional format arguments.</param> | ||
| /// <returns>The localized value, its English fallback, or the key when no resource exists.</returns> | ||
| string GetString(string key, params object[] arguments); |
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SUGGESTION: Format arguments should be nullable-annotated
string.Format accepts null arguments (formatted as empty), so the non-nullable object[] annotation wrongly forbids GetString(key, arg, null). Apply the same change to the implementation at LocalizationService.cs:41.
| string GetString(string key, params object[] arguments); | |
| string GetString(string key, params object?[] arguments); |
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| return OperationResult.CreateSuccess(); | ||
| } | ||
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| private static CultureInfo ApplyThreadCulture(CultureInfo culture) |
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SUGGESTION: Static methods are declared after instance methods
coding-style.md §4 marks class member ordering strict and requires "Static methods go first, then instance methods." ApplyThreadCulture and DiscoverAvailableCultures are declared after the instance methods GetString/SetCulture.
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| var resourceAssembly = typeof(LocalizationServiceTests).Assembly; | ||
| var assemblyName = resourceAssembly.GetName().Name | ||
| ?? throw new InvalidOperationException("The test assembly name could not be resolved."); | ||
| var baseDirectory = Path.GetDirectoryName(resourceAssembly.Location) |
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SUGGESTION: Derive the base directory the same way production does
LocalizationModule.cs:31 uses AppContext.BaseDirectory, while the test derives the directory from Assembly.Location. Under a single-file layout Assembly.Location returns an empty string, and Path.GetDirectoryName(string.Empty) returns an empty string rather than null — the ?? throw on the next line is dead code — so Directory.GetDirectories(string.Empty) throws ArgumentException, which DiscoverAvailableCultures does not catch. AppContext.BaseDirectory removes the divergence and the failure mode.
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| /// Unit tests for resource fallback, discovery, and runtime culture switching. | ||
| /// </summary> | ||
| [Collection(LocalizationCultureCollection.Name)] | ||
| public sealed class LocalizationServiceTests : IDisposable |
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SUGGESTION: Missing tests for changed behavior: format-failure fallback, the indexer surface, and argument guards
The new suite does not cover the FormatException fallback that returns the raw unformatted value (LocalizationService.cs:73-77), the this[key] indexer (LocalizationService.cs:35 — the exact surface LocalizeExtension binds to), or the GetString null/whitespace guards; LocalizeExtension itself has no tests at all. docs/dev/localization.md's own "Adding coverage" bar calls for live-binding refresh coverage — a headless test would also have caught the markup-extension contract issue flagged on LocalizeExtension.cs:13.
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| </UserControl> | ||
| ``` | ||
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| The extension binds through the application-scoped localization service. When `SetCulture` succeeds, all localized indexer bindings are notified and refresh without recreating the view or restarting GenHub. |
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SUGGESTION: Notification claim overstates SetCulture behavior
SetCulture raises CurrentCulture/Item[] notifications only when the culture actually changes (LocalizationService.cs:103-117); re-selecting the current culture returns success without notifications.
| The extension binds through the application-scoped localization service. When `SetCulture` succeeds, all localized indexer bindings are notified and refresh without recreating the view or restarting GenHub. | |
| The extension binds through the application-scoped localization service. When `SetCulture` changes the active culture, all localized indexer bindings are notified and refresh without recreating the view or restarting GenHub. |
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Code Review SummaryStatus: 1 Issue Found | Recommendation: Address before merge Overview
Issue Details (click to expand)SUGGESTION
Incremental review of f5178af — previously reported findings resolvedAll findings from the previous review at
Bot findings from CodeRabbit, Qodo, DeepSource, and SonarCloud (registration order, thread-culture initialization, missing-key warning spam via Files Reviewed (12 files changed since previous review)
Fix these issues in Kilo Cloud Previous Review Summary (commit 6253967)Current summary above is authoritative. Previous snapshots are kept for context only. Previous review (commit 6253967)Status: 9 Issues Found | Recommendation: Address before merge Overview
Issue Details (click to expand)CRITICAL
WARNING
SUGGESTION
Files Reviewed (19 files)
Reviewed by glm-5.3 · Input: 57.2K · Output: 23.2K · Cached: 420.9K |
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| /// </summary> | ||
| public override void Initialize() | ||
| { | ||
| Resources[LocalizationConstants.ResourceServiceKey] = _localizationService; |
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SUGGESTION: Duplicate resource registration — at most one of the two identical assignments is live
Initialize now assigns Resources[ResourceServiceKey] both before (line 52) and after (line 54) AvaloniaXamlLoader.Load(this), and the two lines are identical. Exactly one of them is dead depending on how the XAML loader treats App.axaml's <Application.Resources> declaration: if load populates the existing ResourceDictionary, the post-load assignment is a redundant no-op; if load replaces the dictionary (which declaring a <ResourceDictionary> element typically does), the pre-load assignment is discarded mid-load and only line 54 is load-bearing — in which case the goal of making the service visible to markup extensions evaluated during App XAML load may not actually hold either, since those resolve against the dictionary the loader installed. Note the new LocalizeExtension_DottedKeyBinding_RefreshesWhenCultureChanges test calls CreateBinding directly and bypasses ProvideValue's Application.Current resource lookup, so the App-level resolution path this duplication exists to protect is still unverified (the app-level regression test requested in review of the previous commit was not added). Please drop whichever assignment is dead, or document why both are required, and cover App-level LocalizeExtension resolution with a test.
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Summary
ILocalizationServicecontract backed by .NETResourceManagerINotifyPropertyChangedindexer binding andLocalizeExtensionThis replaces the stale approach in #161 with a focused foundation that matches the current GenHub architecture.
Closes #24
Part of #23
Why this is a separate first step
The parent localization work is intentionally being delivered as a sequence of small PRs. This PR establishes only the framework needed by later steps. It does not mix the foundation with bulk string extraction or UX work.
Out of scope
The following remain separate PRs built on this foundation:
No production view text was changed in this PR, so before/after screenshots are not applicable.
Verification
LocalizeExtensionXAML compile smoke passedgit diff --checkpassedThe build still reports the repository's existing AngleSharp
NU1902advisory warning; this PR does not change that dependency.Created with GPT-5 via Codex desktop.