#include "jni.hpp"

#include <mbgl/util/logging.hpp>

namespace mbgl {
namespace android {

JavaVM* theJVM;

//TODO: remove
bool attach_jni_thread(JavaVM* vm, JNIEnv** env, std::string threadName) {
    assert(vm != nullptr);
    assert(env != nullptr);

    JavaVMAttachArgs args = {JNI_VERSION_1_2, threadName.c_str(), NULL};

    jint ret;
    *env = nullptr;
    bool detach = false;
    ret = vm->GetEnv(reinterpret_cast<void **>(env), JNI_VERSION_1_6);
    if (ret != JNI_OK) {
        if (ret != JNI_EDETACHED) {
            mbgl::Log::Error(mbgl::Event::JNI, "GetEnv() failed with %i", ret);
            throw std::runtime_error("GetEnv() failed");
        } else {
            ret = vm->AttachCurrentThread(env, &args);
            if (ret != JNI_OK) {
                mbgl::Log::Error(mbgl::Event::JNI, "AttachCurrentThread() failed with %i", ret);
                throw std::runtime_error("AttachCurrentThread() failed");
            }
            detach = true;
        }
    }

    return detach;
}

//TODO: remove
void detach_jni_thread(JavaVM* vm, JNIEnv** env, bool detach) {
    if (detach) {
        assert(vm != nullptr);
        assert(env != nullptr);

        jint ret;
        if ((ret = vm->DetachCurrentThread()) != JNI_OK) {
            mbgl::Log::Error(mbgl::Event::JNI, "DetachCurrentThread() failed with %i", ret);
            throw std::runtime_error("DetachCurrentThread() failed");
        }
    }
    *env = nullptr;
}

} // namespace android
} // namespace mbgl