#include "config.h"

#include "fx_slots.h"

#include <array>

#include "api.h"
#include "exception.h"


namespace
{


class EaxFxSlotsException :
    public EaxException
{
public:
    explicit EaxFxSlotsException(
        const char* message)
        :
        EaxException{"EAX_FX_SLOTS", message}
    {
    }
}; // EaxFxSlotsException


} // namespace


void EaxFxSlots::initialize(
    const EaxCall& call,
    ALCcontext& al_context)
{
    initialize_fx_slots(call, al_context);
}

void EaxFxSlots::uninitialize() noexcept
{
    for (auto& fx_slot : fx_slots_)
    {
        fx_slot = nullptr;
    }
}

const ALeffectslot& EaxFxSlots::get(EaxFxSlotIndex index) const
{
    if(!index.has_value())
        fail("Empty index.");
    return *fx_slots_[index.value()];
}

ALeffectslot& EaxFxSlots::get(EaxFxSlotIndex index)
{
    if(!index.has_value())
        fail("Empty index.");
    return *fx_slots_[index.value()];
}

void EaxFxSlots::unlock_legacy() noexcept
{
    fx_slots_[0]->eax_unlock_legacy();
    fx_slots_[1]->eax_unlock_legacy();
}

[[noreturn]]
void EaxFxSlots::fail(
    const char* message)
{
    throw EaxFxSlotsException{message};
}

void EaxFxSlots::initialize_fx_slots(
    const EaxCall& call,
    ALCcontext& al_context)
{
    auto fx_slot_index = EaxFxSlotIndexValue{};

    for (auto& fx_slot : fx_slots_)
    {
        fx_slot = eax_create_al_effect_slot(al_context);
        fx_slot->eax_initialize(call, al_context, fx_slot_index);
        fx_slot_index += 1;
    }
}