Add Language Support For Carpet Settings (#267)

* Added language supports for carpet settings

use /set-carpet-language to set your language.

* Added zh_cn.json - in progress

Not accomplished yet, only translations for testing the language support.

* Create model_for_new_language.jsons.txt

* Rename model_for_new_language.jsons.txt to model_for_new_language.json

* Update model_for_new_language.json

* Update model_for_new_language.json

* Update and rename model_for_new_language.json to en_us.json

* Added setting CarpetLanguage

* Delete SetLanguageCommand.java

* Add files via upload

* Update SettingsManager.java

* Add files via upload

* Update LanguageUtils.java

* Update SettingsManager.java

src/main/java/carpet/utils/LanguageUtils.java

@@ -0,0 +1,106 @@
+package carpet.utils;
+
+import com.google.common.collect.ImmutableList;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.reflect.TypeToken;
+import org.apache.commons.io.IOUtils;
+
+import java.io.IOException;
+import java.lang.reflect.Type;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+
+public class LanguageUtils
+{
+    private static Map<String, String> translationMap;
+
+    public static String currentLanguage;
+
+    public static String translate(String translationKey)
+    {
+        if (translationMap == null)
+        {
+            return translationKey;
+        }
+        return translationMap.getOrDefault(translationKey, translationKey);
+    }
+
+    public static String translateOrDefault(String translationKey, String defaultValue)
+    {
+        if (translationMap == null)
+        {
+            return defaultValue;
+        }
+        return translationMap.getOrDefault(translationKey, defaultValue);
+    }
+
+    public static String translatePlusDefault(String translationKey, String defaultValue){
+        return translationMap.containsKey(translationKey) ? translateOrDefault(translationKey, defaultValue) + String.format(" (%s)", defaultValue): defaultValue;
+    }
+
+    public static String getRuleNameKey(String rule)
+    {
+        return String.format("carpet.rule.%s.name", rule);
+    }
+
+    public static String getRuleDescKey(String rule)
+    {
+        return String.format("carpet.rule.%s.desc", rule);
+    }
+
+    public static ImmutableList<String> getRuleExtras(String rule, ImmutableList<String> defaultList)
+    {
+        if (translationMap == null) return defaultList;
+        String keyBase = String.format("carpet.rule.%s.extra.", rule);
+        List<String> extras = new ArrayList<>();
+        int i = 0;
+        do {
+            String keyExtra = keyBase + i;
+            String value = translationMap.get(keyExtra);
+            System.out.println(keyExtra);
+            System.out.println(value);
+            if (value != null && !value.equals(""))
+            {
+                extras.add(value);
+            }
+            i++;
+        }
+        while (translationMap.containsKey(keyBase + (i - 1)));
+        return (extras.isEmpty()) ? defaultList : ImmutableList.copyOf(extras);
+    }
+
+    public static void setLanguage(String language)
+    {
+        if (language.equals("none"))
+        {
+            currentLanguage = language;
+            translationMap = null;
+            return;
+        }
+
+        String langJs;
+        try{
+            langJs = IOUtils.toString(
+                    Objects.requireNonNull(LanguageUtils.class.getClassLoader().getResourceAsStream(String.format("assets/carpet/lang/%s.json", language))),
+                    StandardCharsets.UTF_8);
+        } catch (NullPointerException | IOException e) {
+            return;
+        }
+        Gson gson = new GsonBuilder().enableComplexMapKeySerialization().create();
+        Type type = new TypeToken<Map<String, String>>() {}.getType();
+        Map<String, String> map1 = gson.fromJson(langJs, type);
+        currentLanguage = language;
+        translationMap = map1;
+    }
+
+    public static void loadConfiguration()
+    {
+
+    }
+
+
+}