/*
Crafter® Build
Copyright (C) 2026 Catcrafts®
Catcrafts.net

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License version 3.0 as published by the Free Software Foundation;

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
*/

module Crafter.Build:Asset_impl;
import :Asset;
import std;
#ifdef CRAFTER_BUILD_HAS_ASSET
import Crafter.Asset;
import Crafter.Math;
#endif
namespace fs = std::filesystem;

namespace Crafter {
    std::string CompressAsset(const fs::path& input, const fs::path& output) {
        std::string ext = input.extension().string();
#ifdef CRAFTER_BUILD_HAS_ASSET
        try {
            if (ext == ".png") {
                auto tex = TextureAsset<Vector<std::uint8_t, 4, 4>>::LoadPNG<std::uint8_t>(input);
                tex.SaveCompressed(output);
            } else if (ext == ".obj") {
                auto mesh = MeshAsset<VertexNormalTangentUVPacked>::LoadOBJ(input);
                mesh.SaveCompressed(output);
            } else {
                return std::format("{}: unsupported asset extension '{}'", input.string(), ext);
            }
        } catch (const std::exception& e) {
            return std::format("{}: {}", input.string(), e.what());
        }
        return {};
#else
        return std::format(
            "{}: crafter-build was bootstrapped without Crafter.Asset linkage; "
            "rebuild via `./bin/crafter-build` so the self-host pass picks up the "
            "Crafter.Asset dep declared in project.cpp",
            input.string());
#endif
    }
}