// License: Modified MIT (NON-AI)
// See the LICENSE file in the root directory for license information.
// Copyright 2025 Timothy Prepscius

#pragma once

#include <atomic>
#include "Lock.hpp"
#include "../assert/release_assert.h"

namespace tjp::core {

struct ColliderImp
{
	Mutex m;
	std::atomic<int> read = 0;
	std::atomic<int> write = 0;
} ;

struct TestCollisionReadImp
{
	ColliderImp &collider;
	
	TestCollisionReadImp (ColliderImp &collider_) :
		collider(collider_)
	{
		auto l = lock_of(collider.m);
		release_assert(collider.write == 0);
		collider.read++;
	}
	
	~TestCollisionReadImp ()
	{
		collider.read--;
	}
};

struct TestCollisionWriteImp
{
	ColliderImp &collider;
	
	TestCollisionWriteImp (ColliderImp &collider_) :
		collider(collider_)
	{
		auto l = lock_of(collider.m);
		release_assert(collider.write == 0);
		release_assert(collider.read == 0);
		
		collider.write++;
	}
	
	~TestCollisionWriteImp ()
	{
		collider.write--;
	}
};

struct ColliderEmpty {};
struct TestCollisionEmpty
{
	TestCollisionEmpty (ColliderEmpty &_){ (void)_; }
} ;

#ifdef DEBUG
	using Collider = ColliderImp;
	using TestCollisionRead = TestCollisionReadImp;
	using TestCollisionWrite = TestCollisionWriteImp;
#else
	using Collider = ColliderEmpty;
	using TestCollisionRead = TestCollisionEmpty;
	using TestCollisionWrite = TestCollisionEmpty;
#endif

using ColliderAlways = ColliderImp;
using TestCollisionReadAlways = TestCollisionReadImp;
using TestCollisionWriteAlways = TestCollisionReadImp;

} // namespace