#pragma once

#include "deimos/core/base.h"

namespace deimos
{

enum class MemoryOrder : int // NOLINT(*-enum-size)
{
    kRelaxed        = __ATOMIC_RELAXED,
    kAcquire        = __ATOMIC_ACQUIRE,
    kRelease        = __ATOMIC_RELEASE,
    kAcqRel         = __ATOMIC_ACQ_REL,
    kSeqCst         = __ATOMIC_SEQ_CST,
};

template<typename T> struct Atomic { T value{}; };

inline void AtomicFence(MemoryOrder order)
{
    __atomic_thread_fence((int)order);
}

template<typename T>
inline void AtomicStore(Atomic<T>* a, T value, MemoryOrder order = MemoryOrder::kRelaxed)
{
    __atomic_store(&a->value, &value, (int)order);
}

template<typename T>
inline T AtomicLoad(Atomic<T>* a, MemoryOrder order = MemoryOrder::kRelaxed)
{
    T value;
    __atomic_load(&a->value, &value, (int)order);
    return value;
}

template<typename T>
inline T AtomicFetchIncrement(Atomic<T>* a, MemoryOrder order = MemoryOrder::kRelaxed)
{
    return __atomic_fetch_add(&a->value, 1, (int)order);
}

template<typename T>
inline T AtomicFetchDecrement(Atomic<T>* a, MemoryOrder order = MemoryOrder::kRelaxed)
{
    return __atomic_fetch_sub(&a->value, 1, (int)order);
}

} // namespace deimos