// Copyright 2025 The Dawn & Tint Authors
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#include "src/tint/lang/spirv/reader/lower/texture.h"

#include "src/tint/lang/core/ir/transform/helper_test.h"
#include "src/tint/lang/spirv/ir/builtin_call.h"
#include "src/tint/lang/spirv/type/image.h"
#include "src/tint/lang/spirv/type/sampled_image.h"

namespace tint::spirv::reader::lower {
namespace {

using namespace tint::core::fluent_types;     // NOLINT
using namespace tint::core::number_suffixes;  // NOLINT

using SpirvReader_TextureTest = core::ir::transform::TransformTest;

using Dim = spirv::type::Dim;
using Depth = spirv::type::Depth;
using Arrayed = spirv::type::Arrayed;
using Multisampled = spirv::type::Multisampled;
using Sampled = spirv::type::Sampled;

TEST_F(SpirvReader_TextureTest, Type_Image_1d) {
    b.Append(mod.root_block, [&] {
        auto* v = b.Var("wg", ty.ptr(handle,
                                     ty.Get<spirv::type::Image>(
                                         ty.f32(), Dim::kD1, Depth::kNotDepth, Arrayed::kNonArrayed,
                                         Multisampled::kSingleSampled, Sampled::kSamplingCompatible,
                                         core::TexelFormat::kUndefined, core::Access::kRead),
                                     read));
        v->SetBindingPoint(1, 2);
    });

    auto* src = R"(
$B1: {  # root
  %wg:ptr<handle, spirv.image<f32, 1d, not_depth, non_arrayed, single_sampled, sampling_compatible, undefined, read>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(src, str());
    Run(Texture);

    auto* expect = R"(
$B1: {  # root
  %wg:ptr<handle, texture_1d<f32>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(expect, str());
}

TEST_F(SpirvReader_TextureTest, Type_Image_2d) {
    b.Append(mod.root_block, [&] {
        auto* v = b.Var("wg", ty.ptr(handle,
                                     ty.Get<spirv::type::Image>(
                                         ty.f32(), Dim::kD2, Depth::kNotDepth, Arrayed::kNonArrayed,
                                         Multisampled::kSingleSampled, Sampled::kSamplingCompatible,
                                         core::TexelFormat::kUndefined, core::Access::kRead),
                                     read));
        v->SetBindingPoint(1, 2);
    });

    auto* src = R"(
$B1: {  # root
  %wg:ptr<handle, spirv.image<f32, 2d, not_depth, non_arrayed, single_sampled, sampling_compatible, undefined, read>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(src, str());
    Run(Texture);

    auto* expect = R"(
$B1: {  # root
  %wg:ptr<handle, texture_2d<f32>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(expect, str());
}

TEST_F(SpirvReader_TextureTest, Type_Image_3d) {
    b.Append(mod.root_block, [&] {
        auto* v = b.Var("wg", ty.ptr(handle,
                                     ty.Get<spirv::type::Image>(
                                         ty.f32(), Dim::kD3, Depth::kNotDepth, Arrayed::kNonArrayed,
                                         Multisampled::kSingleSampled, Sampled::kSamplingCompatible,
                                         core::TexelFormat::kUndefined, core::Access::kRead),
                                     read));
        v->SetBindingPoint(1, 2);
    });

    auto* src = R"(
$B1: {  # root
  %wg:ptr<handle, spirv.image<f32, 3d, not_depth, non_arrayed, single_sampled, sampling_compatible, undefined, read>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(src, str());
    Run(Texture);

    auto* expect = R"(
$B1: {  # root
  %wg:ptr<handle, texture_3d<f32>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(expect, str());
}

TEST_F(SpirvReader_TextureTest, Type_Image_Cube) {
    b.Append(mod.root_block, [&] {
        auto* v =
            b.Var("wg", ty.ptr(handle,
                               ty.Get<spirv::type::Image>(
                                   ty.f32(), Dim::kCube, Depth::kNotDepth, Arrayed::kNonArrayed,
                                   Multisampled::kSingleSampled, Sampled::kSamplingCompatible,
                                   core::TexelFormat::kUndefined, core::Access::kRead),
                               read));
        v->SetBindingPoint(1, 2);
    });

    auto* src = R"(
$B1: {  # root
  %wg:ptr<handle, spirv.image<f32, cube, not_depth, non_arrayed, single_sampled, sampling_compatible, undefined, read>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(src, str());
    Run(Texture);

    auto* expect = R"(
$B1: {  # root
  %wg:ptr<handle, texture_cube<f32>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(expect, str());
}

TEST_F(SpirvReader_TextureTest, Type_Image_SubpassData) {
    b.Append(mod.root_block, [&] {
        auto* v = b.Var(
            "wg", ty.ptr(handle,
                         ty.Get<spirv::type::Image>(
                             ty.f32(), Dim::kSubpassData, Depth::kNotDepth, Arrayed::kNonArrayed,
                             Multisampled::kSingleSampled, Sampled::kSamplingCompatible,
                             core::TexelFormat::kUndefined, core::Access::kRead),
                         read));
        v->SetBindingPoint(1, 2);
    });

    auto* src = R"(
$B1: {  # root
  %wg:ptr<handle, spirv.image<f32, subpass_data, not_depth, non_arrayed, single_sampled, sampling_compatible, undefined, read>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(src, str());
    Run(Texture);

    auto* expect = R"(
$B1: {  # root
  %wg:ptr<handle, input_attachment<f32>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(expect, str());
}

TEST_F(SpirvReader_TextureTest, Type_Image_Depth) {
    b.Append(mod.root_block, [&] {
        auto* v = b.Var("wg", ty.ptr(handle,
                                     ty.Get<spirv::type::Image>(
                                         ty.f32(), Dim::kD2, Depth::kDepth, Arrayed::kNonArrayed,
                                         Multisampled::kSingleSampled, Sampled::kSamplingCompatible,
                                         core::TexelFormat::kUndefined, core::Access::kRead),
                                     read));
        v->SetBindingPoint(1, 2);
    });

    auto* src = R"(
$B1: {  # root
  %wg:ptr<handle, spirv.image<f32, 2d, depth, non_arrayed, single_sampled, sampling_compatible, undefined, read>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(src, str());
    Run(Texture);

    auto* expect = R"(
$B1: {  # root
  %wg:ptr<handle, texture_depth_2d, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(expect, str());
}

TEST_F(SpirvReader_TextureTest, DISABLED_Type_Image_DepthUnknown) {
    b.Append(mod.root_block, [&] {
        auto* v = b.Var("wg", ty.ptr(handle,
                                     ty.Get<spirv::type::Image>(
                                         ty.f32(), Dim::kD2, Depth::kUnknown, Arrayed::kNonArrayed,
                                         Multisampled::kSingleSampled, Sampled::kSamplingCompatible,
                                         core::TexelFormat::kUndefined, core::Access::kRead),
                                     read));
        v->SetBindingPoint(1, 2);
    });

    auto* src = R"(
$B1: {  # root
  %wg:ptr<handle, spirv.image<f32, 2d, depth_unknown, non_arrayed, single_sampled, sampling_compatible, undefined, read>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(src, str());
    Run(Texture);

    auto* expect = R"(
$B1: {  # root
  %wg:ptr<handle, texture_2d<f32>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(expect, str());
}

TEST_F(SpirvReader_TextureTest, Type_Image_Arrayed) {
    b.Append(mod.root_block, [&] {
        auto* v = b.Var("wg", ty.ptr(handle,
                                     ty.Get<spirv::type::Image>(
                                         ty.f32(), Dim::kD2, Depth::kNotDepth, Arrayed::kArrayed,
                                         Multisampled::kSingleSampled, Sampled::kSamplingCompatible,
                                         core::TexelFormat::kUndefined, core::Access::kRead),
                                     read));
        v->SetBindingPoint(1, 2);
    });

    auto* src = R"(
$B1: {  # root
  %wg:ptr<handle, spirv.image<f32, 2d, not_depth, arrayed, single_sampled, sampling_compatible, undefined, read>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(src, str());
    Run(Texture);

    auto* expect = R"(
$B1: {  # root
  %wg:ptr<handle, texture_2d_array<f32>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(expect, str());
}

TEST_F(SpirvReader_TextureTest, Type_Image_RW_Ops) {
    b.Append(mod.root_block, [&] {
        auto* v =
            b.Var("wg", ty.ptr(handle,
                               ty.Get<spirv::type::Image>(
                                   ty.f32(), Dim::kD1, Depth::kNotDepth, Arrayed::kNonArrayed,
                                   Multisampled::kSingleSampled, Sampled::kReadWriteOpCompatible,
                                   core::TexelFormat::kRg32Float, core::Access::kRead),
                               read));
        v->SetBindingPoint(1, 2);
    });

    auto* src = R"(
$B1: {  # root
  %wg:ptr<handle, spirv.image<f32, 1d, not_depth, non_arrayed, single_sampled, rw_op_compatible, rg32float, read>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(src, str());
    Run(Texture);

    auto* expect = R"(
$B1: {  # root
  %wg:ptr<handle, texture_storage_1d<rg32float, read>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(expect, str());
}

TEST_F(SpirvReader_TextureTest, Type_Image_TexelFormat) {
    b.Append(mod.root_block, [&] {
        auto* v = b.Var("wg", ty.ptr(handle,
                                     ty.Get<spirv::type::Image>(
                                         ty.f32(), Dim::kD1, Depth::kNotDepth, Arrayed::kNonArrayed,
                                         Multisampled::kSingleSampled, Sampled::kSamplingCompatible,
                                         core::TexelFormat::kRg32Float, core::Access::kRead),
                                     read));
        v->SetBindingPoint(1, 2);
    });

    auto* src = R"(
$B1: {  # root
  %wg:ptr<handle, spirv.image<f32, 1d, not_depth, non_arrayed, single_sampled, sampling_compatible, rg32float, read>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(src, str());
    Run(Texture);

    auto* expect = R"(
$B1: {  # root
  %wg:ptr<handle, texture_1d<f32>, read> = var undef @binding_point(1, 2)
}

)";
    ASSERT_EQ(expect, str());
}

}  // namespace
}  // namespace tint::spirv::reader::lower