Add more type conversions

Author: Saturn745

src/main/kotlin/util/TypeMapping.kt

@@ -1,11 +1,53 @@
 package util
 
 fun mapJavaTypeToLua(javaType: String): String {
-    return when (javaType) {
-        "int", "float", "double", "long", "short", "byte" -> "number"
-        "boolean" -> "boolean"
-        "char", "String" -> "string"
-        "void" -> "nil"
+    println(javaType)
+    return when {
+        javaType.startsWith("List<") -> {
+            val genericType = javaType.substringAfter("List<").substringBeforeLast(">")
+            "table<${mapJavaTypeToLua(genericType)}>"
+        }
+
+        javaType.startsWith("Set<") -> {
+            val genericType = javaType.substringAfter("Set<").substringBeforeLast(">")
+            "table<${mapJavaTypeToLua(genericType)}>"
+        }
+
+        javaType.startsWith("Map<") -> {
+            val keyValueTypes = javaType.substringAfter("Map<").substringBeforeLast(">").split(",")
+            if (keyValueTypes.size == 2) {
+                val keyType = mapJavaTypeToLua(keyValueTypes[0].trim())
+                val valueType = mapJavaTypeToLua(keyValueTypes[1].trim())
+                "table<$keyType, $valueType>"
+            } else {
+                "table"
+            }
+        }
+
+        javaType.endsWith("[]") -> {
+            val elementType = javaType.removeSuffix("[]")
+            "table<${mapJavaTypeToLua(elementType)}>"
+        }
+
+        javaType.startsWith("Class<") -> {
+            val innerType = javaType.substringAfter("Class<").substringBeforeLast(">")
+            if (innerType.startsWith("? extends")) {
+                val baseType = innerType.removePrefix("? extends ").trim()
+                "optional<${mapJavaTypeToLua(baseType)}>"
+            } else {
+                "optional<${mapJavaTypeToLua(innerType)}>"
+            }
+        }
+
+        javaType.endsWith("?") -> {
+            val baseType = javaType.removeSuffix("?")
+            "${mapJavaTypeToLua(baseType)}?"
+        }
+
+        javaType in listOf("int", "float", "double", "long", "short", "byte") -> "number"
+        javaType == "boolean" -> "boolean"
+        javaType in listOf("char", "String") -> "string"
+        javaType == "void" -> "nil"
         else -> javaType.substringAfterLast(".") // Simplify fully qualified names
     }
-}
+}