Add language mappings for non-standard language names

ProjectLighthouse.Localization/LocalizationManager.cs

@@ -11,6 +11,10 @@ public static class LocalizationManager
 
     public static string GetLocalizedString(TranslationAreas translationArea, string language, string key)
     {
+        // ASP.NET requires specific names for certain languages (like ja for japanese as opposed to the standard ja-JP)
+        // We map that value back here.
+        language = mapLanguageBack(language);
+
         #if DEBUG
         Console.WriteLine($"Attempting to load '{key}' for '{language}'");
         #endif
@@ -36,6 +40,43 @@ public static class LocalizationManager
         return localizedString;
     }
 
+    // If a language isn't working, it might be because a language is using a different name than what ASP.NET expects.
+    // You can retrieve the name of the language from the <c>Accept-Language</c> header in an HTTP request.
+    private static readonly Dictionary<string, string> languageMappings = new()
+    {
+        {
+            "ja-JP", "ja"
+        },
+        {
+            "eo-UY", "eo"
+        },
+    };
+
+    /// <summary>
+    /// Some languages crowdin uses have names that differ from the ones that ASP.NET expects. This function converts the names.
+    /// </summary>
+    /// <param name="language">The language to convert to ASP.NET names</param>
+    /// <returns>The name of the language that ASP.NET expects.</returns>
+    public static string MapLanguage(string language)
+    {
+        foreach ((string? key, string? value) in languageMappings)
+        {
+            if (key == language) return value;
+        }
+
+        return language;
+    }
+
+    private static string mapLanguageBack(string language)
+    {
+        foreach ((string? key, string? value) in languageMappings)
+        {
+            if (value == language) return key;
+        }
+
+        return language;
+    }
+
     // This is a bit scuffed, but it will work for what I need it to do.
     public static IEnumerable<string> GetAvailableLanguages()
     {

ProjectLighthouse.Localization/StringLists/LandingPageStrings.cs

@@ -11,5 +11,5 @@ public static class LandingPageStrings
 
     public static readonly TranslatableString AuthAttemptsPending = create("authAttemptsPending");
 
-    private static TranslatableString create(string key) => new(TranslationAreas.BaseLayout, key);
+    private static TranslatableString create(string key) => new(TranslationAreas.LandingPage, key);
 }

ProjectLighthouse.Localization/TranslatableString.cs

@@ -13,8 +13,12 @@ public class TranslatableString
 
     public string Translate(string language) => LocalizationManager.GetLocalizedString(this.Area, language, this.Key);
 
+    // CS0809 is a warning about obsolete methods overriding non-obsoleted methods.
+    // That works against what we're trying to do here, so we disable the warning here.
+    #pragma warning disable CS0809
     [Obsolete("Do not translate by using ToString. Use TranslatableString.Translate().", true)]
     public override string ToString() => "NOT TRANSLATED CORRECTLY!";
+    #pragma warning restore CS0809
 
     [Obsolete("Do not translate by using ToString. Use TranslatableString.Translate().", true)]
     public static implicit operator string(TranslatableString _) => "NOT TRANSLATED CORRECTLY!";