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#pragma once

#include "common.hpp"

namespace kel {
namespace lbm {

template<typename T, typename Desc, typename Coll>
saw::error_or<void> step(
		const converter<T>& conv,
		saw::data<sch::Ptr<sch::ChunkStruct<T,Desc>>,encode::Sycl<saw::encode::Native>>& fields,
		saw::data<sch::Ptr<sch::MacroStruct<T,Desc>>,encode::Sycl<saw::encode::Native>>& macros,
		saw::data<sch::Ptr<sch::ParticleSpheroidGroup<T,Desc>>,encode::Sycl<saw::encode::Native>>& particles,
		saw::data<sch::UInt64> t_i,
		device& dev
){
	static constexpr saw::data<sch::UInt64> sub_steps{0u};

	auto& q = dev.get_handle();
	auto& info_f = fields.template get<"info">();
	auto& porous_f = macros.template get<"porosity">();
	
	if constexpr ( std::is_same_v<Coll, method::Hlbm> ){
		q.submit([&](acpp::sycl::handler& h){
			component<T,Desc,cmpt::HlbmReset,encode::Sycl<saw::encode::Native>> hlbm_reset;
			h.parallel_for(acpp::sycl::range<Desc::D>{dim_x,dim_y}, [=](acpp::sycl::id<Desc::D> idx){
				saw::data<sch::FixedArray<sch::UInt64,Desc::D>> index;
				for(uint64_t i = 0u; i < Desc::D; ++i){
					index.at({{i}}).set(idx[i]);
				}

				hlbm_reset.apply(fields,macros,index,t_i);
			});
		}).wait();
		q.submit([&](acpp::sycl::handler& h){
			component<T,Desc,cmpt::HlbmOneParticle,encode::Sycl<saw::encode::Native>> hlbm_one_part;

			h.parallel_for(acpp::sycl::range<1u>{particle_amount}, [=](acpp::sycl::id<1u> idx){
				saw::data<sch::FixedArray<sch::UInt64,1u>> index;
				for(uint64_t i = 0u; i < 1u; ++i){
					index.at({{i}}).set(idx[i]);
				}

				hlbm_one_part.apply(fields,macros,particles,index,t_i,{0u});
			});
		}).wait();

		q.submit([&](acpp::sycl::handler& h){
			component<T,Desc,cmpt::Hlbm,encode::Sycl<saw::encode::Native>> collision{1.0};
			component<T,Desc,cmpt::BounceBack,encode::Sycl<saw::encode::Native>> bb;

			component<T,Desc,cmpt::ZouHeHorizontal<true>,encode::Sycl<saw::encode::Native>> flow_in{
				[&](){
					uint64_t target_t_i = 16u;
					if(t_i.get() < target_t_i){
						return 1.0 + (0.01 / target_t_i) * t_i.get();
					}
					return 1.001;
				}()
			};
			component<T,Desc,cmpt::ZouHeHorizontal<false>,encode::Sycl<saw::encode::Native>> flow_out{1.0};

			h.parallel_for(acpp::sycl::range<Desc::D>{dim_x,dim_y}, [=](acpp::sycl::id<Desc::D> idx){
				saw::data<sch::FixedArray<sch::UInt64,Desc::D>> index;
				for(uint64_t i = 0u; i < Desc::D; ++i){
					index.at({{i}}).set(idx[i]);
				}

				auto info = info_f.at(index);
				
				switch(info.get()){
					case 0u:
					break;
					case 1u:
						bb.apply(fields,index,t_i);
					break;
					case 2u:
						collision.apply(fields,macros,index,t_i);
						break;
					case 3u:
						flow_in.apply(fields,index,t_i);
						collision.apply(fields,macros,index,t_i);
						break;
					case 4u:
						flow_out.apply(fields,index,t_i);
						collision.apply(fields,macros,index,t_i);
					break;
					default:
					break;
				}
			});
		}).wait();
	}else if constexpr ( std::is_same_v<Coll, method::FpLbm> ){
		q.submit([&](acpp::sycl::handler& h){
			component<T,Desc,cmpt::FpLbmReset,encode::Sycl<saw::encode::Native>> fplbm_reset;
			h.parallel_for(acpp::sycl::range<Desc::D>{dim_x,dim_y}, [=](acpp::sycl::id<Desc::D> idx){
				saw::data<sch::FixedArray<sch::UInt64,Desc::D>> index;
				for(uint64_t i = 0u; i < Desc::D; ++i){
					index.at({{i}}).set(idx[i]);
				}
				
				fplbm_reset.apply(fields,macros,index,t_i);
			});
		}).wait();

		q.submit([&](acpp::sycl::handler& h){
			component<T,Desc,cmpt::FpLbmOneParticle,encode::Sycl<saw::encode::Native>> fplbm_one_part;

			h.parallel_for(acpp::sycl::range<1u>{particle_amount}, [=](acpp::sycl::id<1u> idx){
				saw::data<sch::FixedArray<sch::UInt64,1u>> index;
				for(uint64_t i = 0u; i < 1u; ++i){
					index.at({{i}}).set(idx[i]);
				}

				fplbm_one_part.apply(fields,macros,particles,index,t_i,{0u});
			});
		}).wait();

		// auto coll_ev = 
		q.submit([&](acpp::sycl::handler& h){
			component<T,Desc,cmpt::BGK,encode::Sycl<saw::encode::Native>> bgk{0.8};
			component<T,Desc,cmpt::FpLbm,encode::Sycl<saw::encode::Native>> collision{0.8};
			component<T,Desc,cmpt::BounceBack,encode::Sycl<saw::encode::Native>> bb;

			component<T,Desc,cmpt::ZouHeHorizontal<true>,encode::Sycl<saw::encode::Native>> flow_in{
				[&](){
					uint64_t target_t_i = 8u;
					if(t_i.get() < target_t_i){
						return 1.0 + (0.01 / target_t_i) * t_i.get();
					}
					return 1.01;
				}()
			};
			component<T,Desc,cmpt::ZouHeHorizontal<false>,encode::Sycl<saw::encode::Native>> flow_out{1.0};

			h.parallel_for(acpp::sycl::range<Desc::D>{dim_x,dim_y}, [=](acpp::sycl::id<Desc::D> idx){
				saw::data<sch::FixedArray<sch::UInt64,Desc::D>> index;
				for(uint64_t i = 0u; i < Desc::D; ++i){
					index.at({{i}}).set(idx[i]);
				}

				auto info = info_f.at(index);
				
				switch(info.get()){
					case 0u:
					break;
					case 1u:
						bb.apply(fields,index,t_i);
					break;
					case 2u:
						collision.apply(fields,macros,index,t_i);
						break;
					case 3u:
						flow_in.apply(fields,index,t_i);
						bgk.apply(fields,macros,index,t_i);
						break;
					case 4u:
						flow_out.apply(fields,index,t_i);
						bgk.apply(fields,macros,index,t_i);
					break;
					default:
					break;
				}
			});
		}).wait();
	}else if constexpr ( std::is_same_v<Coll, method::Psm> ){
	}

	return saw::make_void();
}

}
}