use jni::objects::*;
use jni::sys::*;
use jni::{JNIEnv, JavaVM};

use rustboyadvance_core::core::cartridge;

fn parse_rom_header(env: &JNIEnv, barr: jbyteArray) -> cartridge::header::CartridgeHeader {
    let rom_data = env.convert_byte_array(barr).unwrap();
    cartridge::header::parse(&rom_data)
}

#[no_mangle]
pub unsafe extern "C" fn Java_com_mrmichel_rustboyadvance_RomHelper_getGameCode(
    env: JNIEnv,
    _obj: JClass,
    rom_data: jbyteArray,
) -> jstring {
    let header = parse_rom_header(&env, rom_data);
    env.new_string(header.game_code).unwrap().into_inner()
}

#[no_mangle]
pub unsafe extern "C" fn Java_com_mrmichel_rustboyadvance_RomHelper_getGameTitle(
    env: JNIEnv,
    _obj: JClass,
    rom_data: jbyteArray,
) -> jstring {
    let header = parse_rom_header(&env, rom_data);
    env.new_string(header.game_title).unwrap().into_inner()
}