#include <jni.h>
#include <string>
#include "crypto.h"

std::string jstring2string(JNIEnv *env, jstring jStr)
{
    if (!jStr)
        return "";

    const jclass stringClass = env->GetObjectClass(jStr);
    const jmethodID getBytes = env->GetMethodID(stringClass, "getBytes", "(Ljava/lang/String;)[B");
    const jbyteArray stringJbytes = (jbyteArray) env->CallObjectMethod(jStr, getBytes,
                                                                       env->NewStringUTF("UTF-8"));

    size_t length = (size_t) env->GetArrayLength(stringJbytes);
    jbyte *pBytes = env->GetByteArrayElements(stringJbytes, NULL);

    std::string ret = std::string((char *) pBytes, length);
    env->ReleaseByteArrayElements(stringJbytes, pBytes, JNI_ABORT);

    env->DeleteLocalRef(stringJbytes);
    env->DeleteLocalRef(stringClass);
    return ret;
}

extern "C" JNIEXPORT jstring JNICALL
Java_com_reactnativekeysjsi_KeysModule_getJniJsonStringifyData(JNIEnv * env, jobject thiz,jstring key) {
    auto *crypto = new Crypto();
    std::string _key{jstring2string(env,key)};
    return env->NewStringUTF(crypto->getJniJsonStringifyData(_key).c_str());
}