i18n service

src/Android/Android.csproj

@@ -80,6 +80,7 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="Services\CryptoPrimitiveService.cs" />
     <Compile Include="Services\DeviceActionService.cs" />
+    <Compile Include="Services\LocalizeService.cs" />
   </ItemGroup>
   <ItemGroup>
     <AndroidAsset Include="Assets\FontAwesome.ttf" />

src/Android/MainApplication.cs

@@ -41,7 +41,11 @@ namespace Bit.Droid
             var documentsPath = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
             var liteDbStorage = new LiteDbStorageService(Path.Combine(documentsPath, "bitwarden.db"));
             var deviceActionService = new DeviceActionService();
+            var localizeService = new LocalizeService();
 
+            ServiceContainer.Register<ILocalizeService>("localizeService", localizeService);
+            ServiceContainer.Register<II18nService>("i18nService",
+                new MobileI18nService(localizeService.GetCurrentCultureInfo()));
             ServiceContainer.Register<ICryptoPrimitiveService>("cryptoPrimitiveService", new CryptoPrimitiveService());
             ServiceContainer.Register<IStorageService>("storageService",
                 new MobileStorageService(preferencesStorage, liteDbStorage));

src/Android/Services/LocalizeService.cs

@@ -0,0 +1,97 @@
+using System;
+using System.Globalization;
+using Bit.App.Abstractions;
+using Bit.App.Models;
+
+namespace Bit.Droid.Services
+{
+    public class LocalizeService : ILocalizeService
+    {
+        public CultureInfo GetCurrentCultureInfo()
+        {
+            var netLanguage = "en";
+            var androidLocale = Java.Util.Locale.Default;
+            netLanguage = AndroidToDotnetLanguage(androidLocale.ToString().Replace("_", "-"));
+            // This gets called a lot - try/catch can be expensive so consider caching or something
+            CultureInfo ci = null;
+            try
+            {
+                ci = new CultureInfo(netLanguage);
+            }
+            catch(CultureNotFoundException e1)
+            {
+                // iOS locale not valid .NET culture (eg. "en-ES" : English in Spain)
+                // fallback to first characters, in this case "en"
+                try
+                {
+                    var fallback = ToDotnetFallbackLanguage(new PlatformCulture(netLanguage));
+                    Console.WriteLine(netLanguage + " failed, trying " + fallback + " (" + e1.Message + ")");
+                    ci = new CultureInfo(fallback);
+                }
+                catch(CultureNotFoundException e2)
+                {
+                    // iOS language not valid .NET culture, falling back to English
+                    Console.WriteLine(netLanguage + " couldn't be set, using 'en' (" + e2.Message + ")");
+                    ci = new CultureInfo("en");
+                }
+            }
+            return ci;
+        }
+
+        private string AndroidToDotnetLanguage(string androidLanguage)
+        {
+            Console.WriteLine("Android Language:" + androidLanguage);
+            var netLanguage = androidLanguage;
+            if(androidLanguage.StartsWith("zh"))
+            {
+                if(androidLanguage.Contains("Hant") || androidLanguage.Contains("TW") ||
+                    androidLanguage.Contains("HK") || androidLanguage.Contains("MO"))
+                {
+                    netLanguage = "zh-Hant";
+                }
+                else
+                {
+                    netLanguage = "zh-Hans";
+                }
+            }
+            else
+            {
+                // Certain languages need to be converted to CultureInfo equivalent
+                switch(androidLanguage)
+                {
+                    case "ms-BN": // "Malaysian (Brunei)" not supported .NET culture
+                    case "ms-MY": // "Malaysian (Malaysia)" not supported .NET culture
+                    case "ms-SG": // "Malaysian (Singapore)" not supported .NET culture
+                        netLanguage = "ms"; // closest supported
+                        break;
+                    case "in-ID": // "Indonesian (Indonesia)" has different code in  .NET 
+                        netLanguage = "id-ID"; // correct code for .NET
+                        break;
+                    case "gsw-CH": // "Schwiizertüütsch (Swiss German)" not supported .NET culture
+                        netLanguage = "de-CH"; // closest supported
+                        break;
+                        // add more application-specific cases here (if required)
+                        // ONLY use cultures that have been tested and known to work
+                }
+            }
+            Console.WriteLine(".NET Language/Locale:" + netLanguage);
+            return netLanguage;
+        }
+
+        private string ToDotnetFallbackLanguage(PlatformCulture platCulture)
+        {
+            Console.WriteLine(".NET Fallback Language:" + platCulture.LanguageCode);
+            var netLanguage = platCulture.LanguageCode; // use the first part of the identifier (two chars, usually);
+            switch(platCulture.LanguageCode)
+            {
+                case "gsw":
+                    netLanguage = "de-CH"; // equivalent to German (Switzerland) for this app
+                    break;
+                    // add more application-specific cases here (if required)
+                    // ONLY use cultures that have been tested and known to work
+            }
+            Console.WriteLine(".NET Fallback Language/Locale:" + netLanguage + " (application-specific)");
+            return netLanguage;
+        }
+    }
+}

src/App/Abstractions/ILocalizeService.cs

@@ -0,0 +1,9 @@
+using System.Globalization;
+
+namespace Bit.App.Abstractions
+{
+    public interface ILocalizeService
+    {
+        CultureInfo GetCurrentCultureInfo();
+    }
+}

src/App/App.xaml.cs

@@ -1,8 +1,11 @@
 using Bit.App.Models;
 using Bit.App.Pages;
+using Bit.App.Resources;
+using Bit.App.Services;
 using Bit.App.Utilities;
+using Bit.Core.Abstractions;
+using Bit.Core.Utilities;
 using System;
-using System.Reflection;
 using Xamarin.Forms;
 using Xamarin.Forms.StyleSheets;
 using Xamarin.Forms.Xaml;
@@ -12,18 +15,23 @@ namespace Bit.App
 {
     public partial class App : Application
     {
+        private readonly MobileI18nService _i18nService;
+
         public App()
         {
-            InitializeComponent();
+            _i18nService = ServiceContainer.Resolve<II18nService>("i18nService") as MobileI18nService;
 
+            InitializeComponent();
+            SetCulture();
             ThemeManager.SetTheme("light");
             MainPage = new TabsPage();
 
+            ServiceContainer.Resolve<MobilePlatformUtilsService>("platformUtilsService").Init();
             MessagingCenter.Subscribe<Application, DialogDetails>(Current, "ShowDialog", async (sender, details) =>
             {
                 var confirmed = true;
-                // TODO: ok text
-                var confirmText = string.IsNullOrWhiteSpace(details.ConfirmText) ? "Ok" : details.ConfirmText;
+                var confirmText = string.IsNullOrWhiteSpace(details.ConfirmText) ?
+                    AppResources.Ok : details.ConfirmText;
                 if(!string.IsNullOrWhiteSpace(details.CancelText))
                 {
                     confirmed = await MainPage.DisplayAlert(details.Title, details.Text, confirmText,
@@ -51,5 +59,14 @@ namespace Bit.App
         {
             // Handle when your app resumes
         }
+
+        private void SetCulture()
+        {
+            _i18nService.Init();
+            // Calendars are removed by linker. ref https://bugzilla.xamarin.com/show_bug.cgi?id=59077
+            new System.Globalization.ThaiBuddhistCalendar();
+            new System.Globalization.HijriCalendar();
+            new System.Globalization.UmAlQuraCalendar();
+        }
     }
 }

src/App/Models/PlatformCulture.cs

@@ -0,0 +1,39 @@
+using System;
+
+namespace Bit.App.Models
+{
+    public class PlatformCulture
+    {
+        public PlatformCulture(string platformCultureString)
+        {
+            if(string.IsNullOrWhiteSpace(platformCultureString))
+            {
+                throw new ArgumentException("Expected culture identifier.", nameof(platformCultureString));
+            }
+
+            // .NET expects dash, not underscore
+            PlatformString = platformCultureString.Replace("_", "-");
+            var dashIndex = PlatformString.IndexOf("-", StringComparison.Ordinal);
+            if(dashIndex > 0)
+            {
+                var parts = PlatformString.Split('-');
+                LanguageCode = parts[0];
+                LocaleCode = parts[1];
+            }
+            else
+            {
+                LanguageCode = PlatformString;
+                LocaleCode = string.Empty;
+            }
+        }
+
+        public string PlatformString { get; private set; }
+        public string LanguageCode { get; private set; }
+        public string LocaleCode { get; private set; }
+
+        public override string ToString()
+        {
+            return PlatformString;
+        }
+    }
+}

src/App/Services/MobileI18nService.cs

@@ -0,0 +1,67 @@
+using Bit.App.Resources;
+using Bit.Core.Abstractions;
+using System;
+using System.Globalization;
+using System.Reflection;
+using System.Resources;
+using System.Threading;
+
+namespace Bit.App.Services
+{
+    public class MobileI18nService : II18nService
+    {
+        private const string ResourceId = "UsingResxLocalization.Resx.AppResources";
+
+        private static readonly Lazy<ResourceManager> _resourceManager = new Lazy<ResourceManager>(() =>
+            new ResourceManager(ResourceId, IntrospectionExtensions.GetTypeInfo(typeof(MobileI18nService)).Assembly));
+
+        private readonly CultureInfo _defaultCulture = new CultureInfo("en-US");
+        private bool _inited;
+
+        public MobileI18nService(CultureInfo systemCulture)
+        {
+            Culture = systemCulture;
+        }
+
+        public CultureInfo Culture { get; set; }
+
+        public void Init(CultureInfo culture = null)
+        {
+            if(_inited)
+            {
+                throw new Exception("I18n already inited.");
+            }
+            _inited = true;
+            if(culture != null)
+            {
+                Culture = culture;
+            }
+            AppResources.Culture = Culture;
+            Thread.CurrentThread.CurrentCulture = Culture;
+            Thread.CurrentThread.CurrentUICulture = Culture;
+        }
+
+        public string T(string id, params string[] p)
+        {
+            return Translate(id, p);
+        }
+
+        public string Translate(string id, params string[] p)
+        {
+            if(string.IsNullOrWhiteSpace(id))
+            {
+                return string.Empty;
+            }
+            var result = _resourceManager.Value.GetString(id, Culture);
+            if(result == null)
+            {
+                result = _resourceManager.Value.GetString(id, _defaultCulture);
+                if(result == null)
+                {
+                    result = $"{{{id}}}";
+                }
+            }
+            return string.Format(result, p);
+        }
+    }
+}

src/App/Utilities/TranslateExtension.cs

@@ -0,0 +1,29 @@
+using Bit.Core.Abstractions;
+using Bit.Core.Utilities;
+using System;
+using Xamarin.Forms;
+using Xamarin.Forms.Xaml;
+
+namespace Bit.App.Utilities
+{
+    [ContentProperty("Text")]
+    public class TranslateExtension : IMarkupExtension
+    {
+        private II18nService _i18nService;
+
+        public TranslateExtension()
+        {
+            _i18nService = ServiceContainer.Resolve<II18nService>("i18nService");
+        }
+
+        public string Id { get; set; }
+        public string P1 { get; set; }
+        public string P2 { get; set; }
+        public string P3 { get; set; }
+
+        public object ProvideValue(IServiceProvider serviceProvider)
+        {
+            return _i18nService.T(Id, P1, P2, P3);
+        }
+    }
+}

src/Core/Abstractions/II18nService.cs

@@ -0,0 +1,11 @@
+using System.Globalization;
+
+namespace Bit.Core.Abstractions
+{
+    public interface II18nService
+    {
+        CultureInfo Culture { get; set; }
+        string T(string id, params string[] p);
+        string Translate(string id, params string[] p);
+    }
+}

src/iOS.Core/Services/LocalizeService.cs

@@ -0,0 +1,101 @@
+using System;
+using System.Globalization;
+using Bit.App.Abstractions;
+using Bit.App.Models;
+using Foundation;
+
+namespace Bit.iOS.Core.Services
+{
+    public class LocalizeService : ILocalizeService
+    {
+        public CultureInfo GetCurrentCultureInfo()
+        {
+            var netLanguage = "en";
+            if(NSLocale.PreferredLanguages.Length > 0)
+            {
+                var pref = NSLocale.PreferredLanguages[0];
+
+                netLanguage = iOSToDotnetLanguage(pref);
+            }
+
+            // This gets called a lot - try/catch can be expensive so consider caching or something
+            CultureInfo ci = null;
+            try
+            {
+                ci = new CultureInfo(netLanguage);
+            }
+            catch(CultureNotFoundException e1)
+            {
+                // iOS locale not valid .NET culture (eg. "en-ES" : English in Spain)
+                // fallback to first characters, in this case "en"
+                try
+                {
+                    var fallback = ToDotnetFallbackLanguage(new PlatformCulture(netLanguage));
+                    Console.WriteLine(netLanguage + " failed, trying " + fallback + " (" + e1.Message + ")");
+                    ci = new CultureInfo(fallback);
+                }
+                catch(CultureNotFoundException e2)
+                {
+                    // iOS language not valid .NET culture, falling back to English
+                    Console.WriteLine(netLanguage + " couldn't be set, using 'en' (" + e2.Message + ")");
+                    ci = new CultureInfo("en");
+                }
+            }
+
+            return ci;
+        }
+
+        private string iOSToDotnetLanguage(string iOSLanguage)
+        {
+            Console.WriteLine("iOS Language:" + iOSLanguage);
+            var netLanguage = iOSLanguage;
+            if(iOSLanguage.StartsWith("zh-Hant") || iOSLanguage.StartsWith("zh-HK"))
+            {
+                netLanguage = "zh-Hant";
+            }
+            else if(iOSLanguage.StartsWith("zh"))
+            {
+                netLanguage = "zh-Hans";
+            }
+            else
+            {
+                // Certain languages need to be converted to CultureInfo equivalent
+                switch(iOSLanguage)
+                {
+                    case "ms-MY": // "Malaysian (Malaysia)" not supported .NET culture
+                    case "ms-SG": // "Malaysian (Singapore)" not supported .NET culture
+                        netLanguage = "ms"; // closest supported
+                        break;
+                    case "gsw-CH": // "Schwiizertüütsch (Swiss German)" not supported .NET culture
+                        netLanguage = "de-CH"; // closest supported
+                        break;
+                        // add more application-specific cases here (if required)
+                        // ONLY use cultures that have been tested and known to work
+                }
+            }
+
+            Console.WriteLine(".NET Language/Locale:" + netLanguage);
+            return netLanguage;
+        }
+
+        private string ToDotnetFallbackLanguage(PlatformCulture platCulture)
+        {
+            Console.WriteLine(".NET Fallback Language:" + platCulture.LanguageCode);
+            // Use the first part of the identifier (two chars, usually);
+            var netLanguage = platCulture.LanguageCode;
+            switch(platCulture.LanguageCode)
+            {
+                case "pt":
+                    netLanguage = "pt-PT"; // fallback to Portuguese (Portugal)
+                    break;
+                case "gsw":
+                    netLanguage = "de-CH"; // equivalent to German (Switzerland) for this app
+                    break;
+                    // add more application-specific cases here (if required)
+                    // ONLY use cultures that have been tested and known to work
+            }
+            Console.WriteLine(".NET Fallback Language/Locale:" + netLanguage + " (application-specific)");
+            return netLanguage;
+        }
+    }
+}

src/iOS.Core/iOS.Core.csproj

@@ -49,9 +49,14 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="Services\CryptoPrimitiveService.cs" />
     <Compile Include="Services\KeyChainStorageService.cs" />
+    <Compile Include="Services\LocalizeService.cs" />
     <Compile Include="Views\Toast.cs" />
   </ItemGroup>
   <ItemGroup>
+    <ProjectReference Include="..\App\App.csproj">
+      <Project>{ee44c6a1-2a85-45fe-8d9b-bf1d5f88809c}</Project>
+      <Name>App</Name>
+    </ProjectReference>
     <ProjectReference Include="..\Core\Core.csproj">
       <Project>{4b8a8c41-9820-4341-974c-41e65b7f4366}</Project>
       <Name>Core</Name>