use crate::get_thread;
use jni::sys::{JNIEnv, jint, jlong, jobject};

#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_java_lang_Object_hashCode(
	env: *mut JNIEnv,
	obj: jobject,
) -> jint {
	obj as u32 as i32
}

#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_java_lang_Object_clone(
	env: *mut JNIEnv,
	obj: jobject,
) -> jobject {
	let thread = &*get_thread(env);
	let mut gc = thread.gc.write();

	let source = gc.get(obj as u32);
	match gc.clone_object(&source) {
		Ok(cloned) => cloned.id() as jobject,
		Err(e) => {
			// TODO: throw CloneNotSupportedException
			eprintln!("Clone failed: {:?}", e);
			std::ptr::null_mut()
		}
	}
}

#[unsafe(no_mangle)]
unsafe extern "system" fn Java_java_lang_Object_notifyAll(env: *mut JNIEnv, this: jobject) {
	// Wake all threads waiting on this object's monitor
	let thread = &*get_thread(env);
	thread.gc.read().notify_all(this as u32);
}

#[unsafe(no_mangle)]
unsafe extern "system" fn Java_java_lang_Object_notify(env: *mut JNIEnv, this: jobject) {
	// Wake one thread waiting on this object's monitor
	let thread = &*get_thread(env);
	thread.gc.read().notify_one(this as u32);
}

#[unsafe(no_mangle)]
unsafe extern "system" fn Java_java_lang_Object_wait(
	env: *mut JNIEnv,
	this: jobject,
	timeout_millis: jlong,
) {
	let thread = &*get_thread(env);
	let thread_id = thread.id;
	thread
		.gc
		.read()
		.wait(thread_id, this as u32, timeout_millis)
		.unwrap();
}