/***-
    Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). 
    Licensed under the Unlicense license // Public Domain

    File: AuroraInterfaces.hpp
    Date: 2021-6-10
    Author: Reece
    Project: https://git.reece.sx/AuroraSupport/AuroraInterfaces, https://git.reece.sx/AuroraSupport/AuroraRuntime
    Note: Aurora Runtime will ship with its own implementation of this
***/
#pragma once

#define AU_STRIP_BRACKETS_IMPL(X) X
#define AU_STRIP_BRACKETS(X) AU_STRIP_BRACKETS_IMPL(AU_BRACKET_SCOPE X)

#define AU_EMIT_FIRST(a, b) a
#define AU_EMIT_SECOND(a, b) b
#define AU_EMIT_BOTH(a, b) a b

#define AUI_METHOD_IMPL(ret, name, params) virtual ret name(AU_FOR_EACH_2(AU_EMIT_BOTH, AU_STRIP_BRACKETS(params))) = 0;
#define AUI_METHOD_FUNCTIONAL_IMPL(ret, name, params)                                               \
    std::function<ret(AU_FOR_EACH_2(AU_EMIT_FIRST, AU_STRIP_BRACKETS(params)))> name ## Functional; \
    virtual ret name (AU_FOR_EACH_2(AU_EMIT_BOTH, AU_STRIP_BRACKETS(params))) override              \
    {                                                                                               \
        return name ## Functional(AU_FOR_EACH_2(AU_EMIT_SECOND, AU_STRIP_BRACKETS(params)));        \
    }
    
#define AUI_METHOD_FUNCTIONAL_FWD(ret, name, params)                                                \
    std::function<ret(AU_FOR_EACH_2(AU_EMIT_FIRST, AU_STRIP_BRACKETS(params)))> name ## Functional; \
    virtual ret name (AU_FOR_EACH_2(AU_EMIT_BOTH, AU_STRIP_BRACKETS(params))) override;
    
#define AUI_DEFINE_INTERFACE_START_STRUCT(name, list)       struct name                  { AU_FOR_EACH_3(AUI_METHOD_IMPL, list) }; 
#define AUI_DEFINE_INTERFACE_START_CPP_WRAPPER_FWD(name, list)  struct nameFunctional : name { AU_FOR_EACH_3(AUI_METHOD_FUNCTIONAL_FWD, list) }; 
#define AUI_DEFINE_INTERFACE_START_CPP_WRAPPER_IMPL(name, list) struct nameFunctional : name { AU_FOR_EACH_3(AUI_METHOD_FUNCTIONAL_IMPL, list) }; 


#define AUI_PARAMS(...)  AU_BRACKET_SCOPE(__VA_ARGS__) 
#define AUI_METHODS(...) AU_BRACKET_SCOPE(__VA_ARGS__) 
#define AUI_METHOD(...)  AU_BRACKET_SCOPE(__VA_ARGS__) 
#define AUI_INTERFACE_FWD(name, list)  AUI_DEFINE_INTERFACE_START_STRUCT(name, list) AUI_DEFINE_INTERFACE_START_CPP_WRAPPER_FWD(name, list)
#define AUI_INTERFACE_IMPL(name, list) AUI_DEFINE_INTERFACE_START_STRUCT(name, list) AUI_DEFINE_INTERFACE_START_CPP_WRAPPER_IMPL(name, list)