added translation support for extensions

src/main/java/carpet/CarpetExtension.java

@@ -6,6 +6,8 @@ import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.command.ServerCommandSource;
 import net.minecraft.server.network.ServerPlayerEntity;
 
+import java.util.Map;
+
 public interface CarpetExtension
 {
     /**
@@ -51,4 +53,6 @@ public interface CarpetExtension
     default String version() {return null;}
 
     default void registerLoggers() {}
+
+    default Map<String, String> canHasTranslations(String lang) { return null;}
 }

src/main/java/carpet/utils/Translations.java

@@ -1,5 +1,7 @@
 package carpet.utils;
 
+import carpet.CarpetExtension;
+import carpet.CarpetServer;
 import carpet.CarpetSettings;
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
@@ -8,8 +10,8 @@ import net.minecraft.server.command.ServerCommandSource;
 import org.apache.commons.io.IOUtils;
 
 import java.io.IOException;
-import java.lang.reflect.Type;
 import java.nio.charset.StandardCharsets;
+import java.util.HashMap;
 import java.util.Map;
 import java.util.Objects;
 
@@ -37,6 +39,22 @@ public class Translations
         return translationMap != null && translationMap.containsKey(key);
     }
 
+    public static Map<String, String> getTranslationFromResourcePath(String path)
+    {
+        String dataJSON;
+        try
+        {
+            dataJSON = IOUtils.toString(
+                    Objects.requireNonNull(Translations.class.getClassLoader().getResourceAsStream(String.format("assets/carpet/lang/%s.json", CarpetSettings.language))),
+                    StandardCharsets.UTF_8);
+        } catch (NullPointerException | IOException e) {
+            return null;
+        }
+        Gson gson = new GsonBuilder().enableComplexMapKeySerialization().create();
+        return gson.fromJson(dataJSON, new TypeToken<Map<String, String>>() {}.getType());
+    }
+
+
     public static void updateLanguage(ServerCommandSource source)
     {
         if (CarpetSettings.language.equalsIgnoreCase("none"))
@@ -44,23 +62,30 @@ public class Translations
             translationMap = null;
             return;
         }
-        String langJs;
+        Map<String, String> translations = new HashMap<>();
-        try
+        Map<String, String> trans = getTranslationFromResourcePath(String.format("assets/carpet/lang/%s.json", CarpetSettings.language));
+        if (trans != null) trans.forEach(translations::put);
+
+        for (CarpetExtension ext : CarpetServer.extensions)
         {
-            langJs = IOUtils.toString(
+            Map<String, String> extMappings = ext.canHasTranslations(CarpetSettings.language);
-                    Objects.requireNonNull(Translations.class.getClassLoader().getResourceAsStream(String.format("assets/carpet/lang/%s.json", CarpetSettings.language))),
+            if (extMappings != null)
-                    StandardCharsets.UTF_8);
+            {
-        } catch (NullPointerException | IOException e) {
+                extMappings.forEach((key, value) ->
-            Messenger.m(source, "r Failed to update language");
+                {
+                    if (!translations.containsKey(key)) translations.put(key, value);
+                });
+            }
+        }
+        translations.entrySet().removeIf(e -> e.getKey().startsWith("//"));
+        if (translations.isEmpty())
+        {
+            translationMap = null;
             return;
         }
-        Gson gson = new GsonBuilder().enableComplexMapKeySerialization().create();
+        translationMap = translations;
-        Type type = new TypeToken<Map<String, String>>() {}.getType();
-        translationMap = gson.fromJson(langJs, type);
-        translationMap.entrySet().removeIf(e -> e.getKey().startsWith("//"));
     }
 
-
     public static boolean isValidLanguage(String newValue)
     {
         // will put some validations for availble languages at some point