Support JP and TW clients

src/main/java/emu/nebula/RegionConfig.java

@@ -0,0 +1,42 @@
+package emu.nebula;
+
+import it.unimi.dsi.fastutil.objects.Object2ObjectMap;
+import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter @Setter
+public class RegionConfig {
+    private String name;
+    private int dataVersion;
+    private String serverMetaKey;
+    private String serverGarbleKey;
+    
+    private static Object2ObjectMap<String, RegionConfig> REGIONS = new Object2ObjectOpenHashMap<>();
+    
+    public RegionConfig(String name) {
+        this.name = name;
+        this.serverMetaKey = "";
+        this.serverGarbleKey = "";
+    }
+    
+    public RegionConfig setDataVersion(int i) {
+        this.dataVersion = i;
+        return this;
+    }
+    
+    public RegionConfig setServerMetaKey(String key) {
+        this.serverMetaKey = key;
+        return this;
+    }
+    
+    public RegionConfig setServerGarbleKey(String key) {
+        this.serverGarbleKey = key;
+        return this;
+    }
+    
+    public static RegionConfig getRegion(String name) {
+        String regionName = name.toLowerCase();
+        return REGIONS.computeIfAbsent(regionName, r -> new RegionConfig(regionName));
+    }
+}