#include "Resources/MeshLoader.h"
#include "Resources/ResourceManager.h"

namespace XCEngine {
namespace Resources {

MeshLoader::MeshLoader() = default;
MeshLoader::~MeshLoader() = default;

Containers::Array<Containers::String> MeshLoader::GetSupportedExtensions() const {
    Containers::Array<Containers::String> extensions;
    extensions.PushBack(Containers::String("fbx"));
    extensions.PushBack(Containers::String("obj"));
    extensions.PushBack(Containers::String("gltf"));
    extensions.PushBack(Containers::String("glb"));
    extensions.PushBack(Containers::String("dae"));
    extensions.PushBack(Containers::String("stl"));
    return extensions;
}

bool MeshLoader::CanLoad(const Containers::String& path) const {
    Containers::String ext = GetExtension(path);
    ext.ToLower();
    
    return ext == "fbx" || ext == "obj" || ext == "gltf" || 
           ext == "glb" || ext == "dae" || ext == "stl";
}

LoadResult MeshLoader::Load(const Containers::String& path, const ImportSettings* settings) {
    (void)settings;
    
    Containers::String ext = GetExtension(path);
    ext.ToLower();
    
    if (!CanLoad(path)) {
        return LoadResult(Containers::String("Unsupported mesh format: ") + ext);
    }
    
    Containers::Array<Core::uint8> fileData = ReadFileData(path);
    if (fileData.Empty()) {
        return LoadResult(Containers::String("Failed to read file: ") + path);
    }
    
    auto* mesh = new Mesh();
    
    IResource::ConstructParams params;
    params.name = path;
    params.path = path;
    params.guid = ResourceGUID::Generate(path);
    params.memorySize = fileData.Size();
    
    mesh->Initialize(params);
    
    return LoadResult(mesh);
}

ImportSettings* MeshLoader::GetDefaultSettings() const {
    return nullptr;
}

REGISTER_RESOURCE_LOADER(MeshLoader);

} // namespace Resources
} // namespace XCEngine