#include "com_baeldung_jni_ExampleObjectsJNI.h"
#include <iostream>

/*
 * Class:     com_baeldung_jni_ExampleObjectsJNI
 * Method:    createUser
 * Signature: (Ljava/lang/String;D)Lcom/baeldung/jni/UserData;
 */
JNIEXPORT jobject JNICALL Java_com_baeldung_jni_ExampleObjectsJNI_createUser
  (JNIEnv *env, jobject thisObject, jstring name, jdouble balance){
  
    // Create the object of the class UserData
    jclass userDataClass = env->FindClass("com/baeldung/jni/UserData");
    jobject newUserData = env->AllocObject(userDataClass);
	
    // Get UserData fields to set
    jfieldID nameField = env->GetFieldID(userDataClass , "name", "Ljava/lang/String;");
    jfieldID balanceField = env->GetFieldID(userDataClass , "balance", "D");
	
    // Set the values of the new object
    env->SetObjectField(newUserData, nameField, name);
    env->SetDoubleField(newUserData, balanceField, balance);
    
    // Return the created object
    return newUserData;
  }

/*
 * Class:     com_baeldung_jni_ExampleObjectsJNI
 * Method:    printUserData
 * Signature: (Lcom/baeldung/jni/UserData;)Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_com_baeldung_jni_ExampleObjectsJNI_printUserData
  (JNIEnv *env, jobject thisObject, jobject userData){
  	
  	// Find the class method id
  	jclass userDataClass = env->GetObjectClass(userData);
  	jmethodID methodId = env->GetMethodID(userDataClass, "getUserInfo", "()Ljava/lang/String;");

    // Call the object method and get the result
    jstring result = (jstring)env->CallObjectMethod(userData, methodId);
	
    // Print the result
    std::cout << "C++: User data is: " << env->GetStringUTFChars(result, NULL) << std::endl;
    
    return result;
  }