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 *
 * MIT License
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 * Copyright (C) 2023-2025 Advanced Micro Devices, Inc. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * furnished to do so, subject to the following conditions:
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 * The above copyright notice and this permission notice shall be included in
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#pragma once

#include <set>
#include <vector>

#include <tensilelitehost/export.h>

namespace TensileLite
{
    template <typename Value>
    struct FreeSizeEntry
    {
        Value value;
    };
    /**
     * \ingroup SolutionLibrary
     *
     * Uses a distance function to select solutions based on benchmarks.
     * Benchmarks are performed to determine the optimal solution at a number of
     * specific sizes. At runtime, we find the benchmarked size that is closest
     * to the size asked for.
     */
    template <typename MyProblem, typename MySolution = typename MyProblem::Solution>
    struct ProblemFreeSizeLibrary : public SolutionLibrary<MyProblem, MySolution>
    {
        using Element = std::shared_ptr<SolutionLibrary<MyProblem, MySolution>>;
        using Table   = std::vector<FreeSizeEntry<Element>>;
        std::shared_ptr<Table> table;

        static std::string Type()
        {
            return "FreeSize";
        }
        virtual std::string type() const override
        {
            return Type();
        }
        virtual std::string description() const override
        {
            if(table == nullptr)
                return concatenate(type(), ", table: nullptr");
            return concatenate(type(), table->size());
        }

        virtual std::shared_ptr<MySolution> getSolutionByIndex(MyProblem const& problem,
                                                               Hardware const&  hardware,
                                                               const int index) const override
        {
            std::shared_ptr<MySolution> solution;
            return solution;
        }

        virtual std::shared_ptr<MySolution> findBestSolution(MyProblem const& problem,
                                                             Hardware const&  hardware,
                                                             double*          fitness
                                                             = nullptr) const override
        {
            std::shared_ptr<MySolution> solution;
            return solution;
        }

        virtual SolutionSet<MySolution>
            findAllSolutions(MyProblem const&          problem,
                             Hardware const&           hardware,
                             SolutionLibrarySearchType searchType
                             = SolutionLibrarySearchType::DEFAULT) const override
        {
            bool                    debug = Debug::Instance().printPropertyEvaluation();
            SolutionSet<MySolution> rv;
            if(searchType == SolutionLibrarySearchType::DEFAULT)
                return rv;

            for(auto const& row : *this->table)
            {
                if(debug)
                    std::cout << row.value->description() << std::endl;

                auto rowSolutions = row.value->findAllSolutions(problem, hardware, searchType);
                rv.insert(rowSolutions.begin(), rowSolutions.end());

                if(debug)
                    std::cout << std::endl;
            }

            return rv;
        }

        virtual SolutionSet<MySolution>
            findAllSolutionsGroupedGemm(std::vector<MyProblem> const& problems,
                                        Hardware const&               hardware,
                                        SolutionLibrarySearchType     searchType
                                        = SolutionLibrarySearchType::DEFAULT) const override
        {
            bool                    debug = Debug::Instance().printPropertyEvaluation();
            SolutionSet<MySolution> rv;
            if(searchType == SolutionLibrarySearchType::DEFAULT)
                return rv;

            for(auto const& row : *this->table)
            {
                if(debug)
                    std::cout << row.value->description() << std::endl;

                auto rowSolutions
                    = row.value->findAllSolutionsGroupedGemm(problems, hardware, searchType);
                rv.insert(rowSolutions.begin(), rowSolutions.end());

                if(debug)
                    std::cout << std::endl;
            }

            return rv;
        }

        virtual SolutionVector<MySolution> findTopSolutions(MyProblem const& problem,
                                                            Hardware const&  hardware,
                                                            int numSolutions) const override
        {
            // TODO-
            //   Can remove this override since the base SolutionLibrary has done the same thing
            // FreeSize pool is simply a table, no ranking information.
            // Return empty to indicate not supported for heuristic.
            SolutionVector<MySolution> solutions;
            return solutions;
        }

        virtual SolutionVector<MySolution>
            findTopSolutionsGroupedGemm(std::vector<MyProblem> const& problems,
                                        Hardware const&               hardware,
                                        int                           numSolutions) const override
        {
            SolutionVector<MySolution> solutions;
            return solutions;
        }
    };
} // namespace TensileLite