import CodexBarCoreimport Foundation enum CodexBarLocalizationOverride {    @TaskLocal static var appLanguage: String?} enum AppLanguagePreferenceMigration {    private static let appleLanguagesKey = "AppleLanguages"     static func clearLegacyOverrideIfOwned(        storedAppLanguage: String,        defaults: UserDefaults = .standard)    {        let language = storedAppLanguage.trimmingCharacters(in: .whitespacesAndNewlines)        guard !language.isEmpty,              defaults.stringArray(forKey: self.appleLanguagesKey) == [language]        else { return }         defaults.removeObject(forKey: self.appleLanguagesKey)    }} private func appLanguageDefaults() -> UserDefaults {    if Bundle.main.bundleIdentifier != nil {        return .standard    }    if UserDefaults.standard.object(forKey: "appLanguage") != nil {        return .standard    }    // Fallback for running outside a .app bundle (swift run / debug builds)    return UserDefaults(suiteName: "CodexBar") ?? .standard} private let isRunningTestsProcessAtStartup: Bool = {    let env = ProcessInfo.processInfo.environment    if env["XCTestConfigurationFilePath"] != nil {        return true    }    if env["TESTING_LIBRARY_VERSION"] != nil {        return true    }    if env["SWIFT_TESTING"] != nil {        return true    }    return NSClassFromString("XCTestCase") != nil}() private func isRunningTestsProcess() -> Bool {    isRunningTestsProcessAtStartup} private func resolvedAppLanguage() -> String {    if let override = CodexBarLocalizationOverride.appLanguage {        return override    }    if isRunningTestsProcess() {        return "en"    }    return appLanguageDefaults().string(forKey: "appLanguage") ?? ""} func codexBarLocalizationSignature() -> String {    resolvedAppLanguage()} /// Resolving the `.lproj`/resource bundles repeats `Bundle(url:)`/`Bundle(path:)` filesystem lookups,/// which are surprisingly hot: every `L(…)` and `codexBarLocalizationSignature()` call runs them, and/// menu row bodies (`MetricRow`, `ProviderCostContent`, `UsageMenuCardView.Model`) re-evaluate them on/// every closed-menu rebuild tick on the main thread (#1347). The resolved bundles never change unless/// the language changes, so cache them. A single lock with compute-happening-outside-the-lock keeps the/// disk work off the critical section and avoids re-entrant deadlock when the localized-bundle compute/// closure calls back into the resource-bundle accessor.private enum LocalizationBundleCache {    private static let lock = NSLock()    private nonisolated(unsafe) static var resourceBundle: Bundle?    private nonisolated(unsafe) static var localizedBundlesByLanguage: [String: Bundle] = [:]     static func defaultResourceBundle(_ compute: () -> Bundle) -> Bundle {        self.lock.lock()        if let resourceBundle {            self.lock.unlock()            return resourceBundle        }        self.lock.unlock()        let computed = compute()        self.lock.lock()        resourceBundle = computed        self.lock.unlock()        return computed    }     static func localizedBundle(forLanguage language: String, _ compute: () -> Bundle) -> Bundle {        self.lock.lock()        if let cachedLocalizedBundle = self.localizedBundlesByLanguage[language] {            self.lock.unlock()            return cachedLocalizedBundle        }        self.lock.unlock()        let computed = compute()        self.lock.lock()        self.localizedBundlesByLanguage[language] = computed        self.lock.unlock()        return computed    }     static func reset() {        self.lock.lock()        self.resourceBundle = nil        self.localizedBundlesByLanguage = [:]        self.lock.unlock()    }} func codexBarLocalizationResourceBundle(    mainBundle: Bundle = .main,    bundleName: String = "CodexBar_CodexBar") -> Bundle{    // Only the default (process `.main`) resolution is cached: it is constant for the lifetime of the    // process. Custom arguments (tests) keep resolving directly so they stay isolated from the cache.    guard mainBundle === Bundle.main, bundleName == "CodexBar_CodexBar" else {        return resolveLocalizationResourceBundle(mainBundle: mainBundle, bundleName: bundleName)    }    return LocalizationBundleCache.defaultResourceBundle {        resolveLocalizationResourceBundle(mainBundle: mainBundle, bundleName: bundleName)    }} private func resolveLocalizationResourceBundle(mainBundle: Bundle, bundleName: String) -> Bundle {    guard mainBundle.bundleURL.pathExtension == "app" else {        return Bundle.module    }     if let url = mainBundle.url(forResource: bundleName, withExtension: "bundle"),       let bundle = Bundle(url: url)    {        return bundle    }     if let resourceURL = mainBundle.resourceURL?.absoluteURL,       let bundle = Bundle(url: resourceURL.appendingPathComponent("\(bundleName).bundle"))    {        return bundle    }     return mainBundle} private func localizedBundle() -> Bundle {    // Keyed on the resolved language so a language switch (settings change or test override) transparently    // re-resolves; otherwise the cached bundle is returned without touching the filesystem.    let language = resolvedAppLanguage()    return localizedBundle(forLanguage: language)} private func localizedBundle(forLanguage language: String) -> Bundle {    LocalizationBundleCache.localizedBundle(forLanguage: language) {        resolveLocalizedBundle(forLanguage: language)    }} private func resolveLocalizedBundle(forLanguage language: String) -> Bundle {    let resourceBundle = codexBarLocalizationResourceBundle()    if !language.isEmpty {        if let bundle = lprojBundle(named: language, in: resourceBundle) {            return bundle        }    } else {        // System mode: follow macOS language preferences        let localizations = resourceBundle.localizations.filter { $0 != "Base" }        let preferred = Bundle.preferredLocalizations(            from: localizations,            forPreferences: Locale.preferredLanguages).first        if let preferred,           let bundle = lprojBundle(named: preferred, in: resourceBundle)        {            return bundle        }    }    // Fallback to en.lproj    if let path = resourceBundle.path(forResource: "en", ofType: "lproj"),       let bundle = Bundle(path: path)    {        return bundle    }    return resourceBundle} private func lprojBundle(named language: String, in resourceBundle: Bundle) -> Bundle? {    let candidates = [language, language.lowercased()]    for candidate in candidates where !candidate.isEmpty {        if let path = resourceBundle.path(forResource: candidate, ofType: "lproj"),           let bundle = Bundle(path: path)        {            return bundle        }    }    return nil} func L(_ key: String) -> String {    let resourceBundle = codexBarLocalizationResourceBundle()    return codexBarLocalizedString(key, bundle: localizedBundle(), resourceBundle: resourceBundle)} func L(_ key: String, _ arguments: CVarArg...) -> String {    String(format: L(key), arguments: arguments)} func L(_ key: String, language: String) -> String {    let resourceBundle = codexBarLocalizationResourceBundle()    let bundle = localizedBundle(forLanguage: language)    return codexBarLocalizedString(key, bundle: bundle, resourceBundle: resourceBundle)} func codexBarLocalizedLocale() -> Locale {    let language = resolvedAppLanguage()    guard !language.isEmpty else { return .current }    let normalized = language.lowercased()    if normalized == "ar" || normalized.hasPrefix("ar-") {        return Locale(identifier: "\(language)@numbers=arab")    }    switch normalized {    case "zh-hans":        return Locale(identifier: "zh-Hans")    case "zh-hant":        return Locale(identifier: "zh-Hant")    case "pt-br":        return Locale(identifier: "pt-BR")    default:        return Locale(identifier: language)    }} func codexBarLocalizedInteger(_ value: Int) -> String {    value.formatted(.number.locale(codexBarLocalizedLocale()))} func codexBarLocalizedString(_ key: String, bundle: Bundle, resourceBundle: Bundle) -> String {    let value = bundle.localizedString(forKey: key, value: nil, table: nil)    let trimmed = value.trimmingCharacters(in: .whitespacesAndNewlines)    if !trimmed.isEmpty, value != key {        return value    }     guard bundle.bundleURL.lastPathComponent != "en.lproj",          let englishBundle = lprojBundle(named: "en", in: resourceBundle)    else {        return trimmed.isEmpty ? key : value    }     let fallback = englishBundle.localizedString(forKey: key, value: nil, table: nil)    return fallback.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty ? key : fallback} func resetCodexBarLocalizationCache() {    LocalizationBundleCache.reset()} #if DEBUGfunc codexBarLocalizedBundleForTesting() -> Bundle {    localizedBundle()} func resetCodexBarLocalizationCacheForTesting() {    resetCodexBarLocalizationCache()}#endif func configureUsageFormatterLocalizationProvider() {    UsageFormatter.setLocalizationProvider { key in        let resourceBundle = codexBarLocalizationResourceBundle()        return codexBarLocalizedString(key, bundle: localizedBundle(), resourceBundle: resourceBundle)    }    UsageFormatter.setLocaleProvider {        codexBarLocalizedLocale()    }}