#pragma once

#include "JniContext.h"
#include <optional>

class JBindings {
protected:
    JBindings(const char* className) {
        JNIEnv* env = JniContext::getJniEnv();
        _class = findClass(env, className);
    }

    std::optional<jfieldID> getStaticFieldID(const char* name, const char* signature) {
        try{
            auto result = JniContext::getJniEnv()->GetStaticFieldID(_class, name, signature);
            JniContext::checkException();
            return result;
        }catch(...){
            return std::nullopt;
        }
    }
    //

    static jclass findClass(JNIEnv* env, const char* className) {
        auto classLocalRef = env->FindClass(className);
        if(classLocalRef == nullptr){
            return nullptr;
        }
        auto globalRef = (jclass)env->NewGlobalRef(classLocalRef);
        env->DeleteLocalRef(classLocalRef);
        return globalRef;
    }

    jclass _class;
};