#include "gtest/gtest.h"

#include "kompute/Kompute.hpp"

#include "kompute_test/shaders/shadertest_op_custom_shader.hpp"

TEST(TestOpAlgoCreate, ShaderRawDataFromConstructor)
{
    kp::Manager mgr;

    std::shared_ptr<kp::Tensor> tensorA = mgr.tensor({ 3, 4, 5 });
    std::shared_ptr<kp::Tensor> tensorB = mgr.tensor({ 0, 0, 0 });

    std::string shader(R"(
        #version 450

        layout (local_size_x = 1) in;

        layout(set = 0, binding = 0) buffer a { float pa[]; };
        layout(set = 0, binding = 1) buffer b { float pb[]; };

        void main() {
            uint index = gl_GlobalInvocationID.x;
            pb[index] = pa[index];
            pa[index] = index;
        }
    )");

    std::vector<uint32_t> spirv = kp::Shader::compile_source(shader);

    std::vector<std::shared_ptr<kp::Tensor>> params = { tensorA, tensorB };

    mgr.sequence()
      ->eval<kp::OpTensorSyncDevice>(params)
      ->eval<kp::OpAlgoDispatch>(mgr.algorithm(params, spirv))
      ->eval<kp::OpTensorSyncLocal>(params);

    EXPECT_EQ(tensorA->data(), std::vector<float>({ 0, 1, 2 }));
    EXPECT_EQ(tensorB->data(), std::vector<float>({ 3, 4, 5 }));
}

TEST(TestOpAlgoCreate, ShaderCompiledDataFromConstructor)
{
    kp::Manager mgr;

    std::shared_ptr<kp::Tensor> tensorA = mgr.tensor({ 3, 4, 5 });
    std::shared_ptr<kp::Tensor> tensorB = mgr.tensor({ 0, 0, 0 });

    std::vector<uint32_t> spirv = std::vector<uint32_t>(
      (uint32_t*)
        kp::shader_data::test_shaders_glsl_test_op_custom_shader_comp_spv,
      (uint32_t*)(kp::shader_data::
                    test_shaders_glsl_test_op_custom_shader_comp_spv +
                  kp::shader_data::
                    test_shaders_glsl_test_op_custom_shader_comp_spv_len));

    std::vector<std::shared_ptr<kp::Tensor>> params = { tensorA, tensorB };

    mgr.sequence()
      ->eval<kp::OpTensorSyncDevice>(params)
      ->eval<kp::OpAlgoDispatch>(mgr.algorithm(params, spirv))
      ->eval<kp::OpTensorSyncLocal>(params);

    EXPECT_EQ(tensorA->data(), std::vector<float>({ 0, 1, 2 }));
    EXPECT_EQ(tensorB->data(), std::vector<float>({ 3, 4, 5 }));
}

// TODO: Add support to read from file for shader
// TEST(TestOpAlgoCreate, ShaderCompiledDataFromFile)
//{
//    kp::Manager mgr;
//
//    std::shared_ptr<kp::Tensor> tensorA{ new kp::Tensor({ 3, 4, 5 }) };
//    std::shared_ptr<kp::Tensor> tensorB{ new kp::Tensor({ 0, 0, 0 }) };
//    mgr.rebuild({ tensorA, tensorB });
//
//    mgr.evalOpDefault<kp::OpAlgoCreate>(
//      { tensorA, tensorB },
//      "test/shaders/glsl/test_op_custom_shader.comp.spv");
//
//    mgr.evalOpDefault<kp::OpTensorSyncLocal>({ tensorA, tensorB });
//
//    EXPECT_EQ(tensorA->data(), std::vector<float>({ 0, 1, 2 }));
//    EXPECT_EQ(tensorB->data(), std::vector<float>({ 3, 4, 5 }));
//}