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#include "src/tint/lang/core/type/sampled_texture.h"

#include "src/tint/lang/core/enums.h"
#include "src/tint/lang/core/type/depth_texture.h"
#include "src/tint/lang/core/type/external_texture.h"
#include "src/tint/lang/core/type/f32.h"
#include "src/tint/lang/core/type/helper_test.h"
#include "src/tint/lang/core/type/i32.h"
#include "src/tint/lang/core/type/input_attachment.h"
#include "src/tint/lang/core/type/manager.h"
#include "src/tint/lang/core/type/storage_texture.h"
#include "src/tint/lang/core/type/texture_dimension.h"
#include "src/tint/lang/core/type/void.h"

namespace tint::core::type {
namespace {

using SampledTextureTest = TestHelper;

TEST_F(SampledTextureTest, Creation) {
    Manager ty;
    auto* a = ty.sampled_texture(TextureDimension::kCube, ty.f32());
    auto* b = ty.sampled_texture(TextureDimension::kCube, ty.f32());
    auto* c = ty.sampled_texture(TextureDimension::k2d, ty.f32());
    auto* d = ty.sampled_texture(TextureDimension::kCube, ty.i32());
    auto* e = ty.sampled_texture(TextureDimension::kCube, ty.f32(), TextureFilterable::kFilterable);
    auto* f = ty.sampled_texture(TextureDimension::kCube, ty.f32(), TextureFilterable::kFilterable);
    auto* g =
        ty.sampled_texture(TextureDimension::kCube, ty.f32(), TextureFilterable::kUnfilterable);

    EXPECT_TRUE(a->Type()->Is<F32>());
    EXPECT_EQ(a->Dim(), TextureDimension::kCube);

    EXPECT_EQ(a->Filterable(), TextureFilterable::kUndefined);
    EXPECT_EQ(e->Filterable(), TextureFilterable::kFilterable);

    EXPECT_EQ(a, b);
    EXPECT_NE(a, c);
    EXPECT_NE(a, d);
    EXPECT_NE(a, e);
    EXPECT_EQ(e, f);
    EXPECT_NE(e, g);
}

TEST_F(SampledTextureTest, Hash) {
    Manager ty;
    auto* a = ty.sampled_texture(TextureDimension::kCube, ty.f32());
    auto* b = ty.sampled_texture(TextureDimension::kCube, ty.f32());
    auto* c = ty.sampled_texture(TextureDimension::kCube, ty.f32(), TextureFilterable::kFilterable);

    EXPECT_EQ(a->unique_hash, b->unique_hash);
    EXPECT_NE(a->unique_hash, c->unique_hash);
}

TEST_F(SampledTextureTest, Equals) {
    Manager ty;
    auto* a = ty.sampled_texture(TextureDimension::kCube, ty.f32());
    auto* b = ty.sampled_texture(TextureDimension::kCube, ty.f32());
    auto* c = ty.sampled_texture(TextureDimension::k2d, ty.f32());
    auto* d = ty.sampled_texture(TextureDimension::kCube, ty.i32());
    auto* e = ty.sampled_texture(TextureDimension::kCube, ty.f32(), TextureFilterable::kFilterable);
    auto* f = ty.sampled_texture(TextureDimension::kCube, ty.f32(), TextureFilterable::kFilterable);
    auto* g =
        ty.sampled_texture(TextureDimension::kCube, ty.f32(), TextureFilterable::kUnfilterable);

    EXPECT_TRUE(a->Equals(*b));
    EXPECT_FALSE(a->Equals(*c));
    EXPECT_FALSE(a->Equals(*d));
    EXPECT_FALSE(a->Equals(Void{}));
    EXPECT_FALSE(a->Equals(*e));
    EXPECT_TRUE(e->Equals(*f));
    EXPECT_FALSE(e->Equals(*g));
}

TEST_F(SampledTextureTest, IsTexture) {
    F32 f32;
    SampledTexture s(TextureDimension::kCube, &f32);
    Texture* ty = &s;
    EXPECT_FALSE(ty->Is<DepthTexture>());
    EXPECT_FALSE(ty->Is<ExternalTexture>());
    EXPECT_FALSE(ty->Is<InputAttachment>());
    EXPECT_TRUE(ty->Is<SampledTexture>());
    EXPECT_FALSE(ty->Is<StorageTexture>());
}

TEST_F(SampledTextureTest, Dim) {
    F32 f32;
    SampledTexture s(TextureDimension::k3d, &f32);
    EXPECT_EQ(s.Dim(), TextureDimension::k3d);
}

TEST_F(SampledTextureTest, Type) {
    F32 f32;
    SampledTexture s(TextureDimension::k3d, &f32);
    EXPECT_EQ(s.Type(), &f32);
}

TEST_F(SampledTextureTest, FriendlyName) {
    F32 f32;
    SampledTexture s(TextureDimension::k3d, &f32);
    EXPECT_EQ(s.FriendlyName(), "texture_3d<f32>");
}

TEST_F(SampledTextureTest, FriendlyNameFilterable) {
    F32 f32;
    SampledTexture s(TextureDimension::k3d, &f32, TextureFilterable::kFilterable);
    EXPECT_EQ(s.FriendlyName(), "texture_3d<f32, filterable>");
}

TEST_F(SampledTextureTest, Clone) {
    Manager ty;
    auto* a = ty.sampled_texture(TextureDimension::kCube, ty.f32());

    core::type::Manager mgr;
    core::type::CloneContext ctx{{nullptr}, {nullptr, &mgr}};

    auto* mt = a->Clone(ctx);
    EXPECT_EQ(mt->Dim(), TextureDimension::kCube);
    EXPECT_TRUE(mt->Type()->Is<F32>());
    EXPECT_EQ(mt->Filterable(), TextureFilterable::kUndefined);
}

TEST_F(SampledTextureTest, CloneFilterable) {
    Manager ty;
    auto* a =
        ty.sampled_texture(TextureDimension::kCube, ty.f32(), TextureFilterable::kUnfilterable);

    core::type::Manager mgr;
    core::type::CloneContext ctx{{nullptr}, {nullptr, &mgr}};

    auto* mt = a->Clone(ctx);
    EXPECT_EQ(mt->Dim(), TextureDimension::kCube);
    EXPECT_TRUE(mt->Type()->Is<F32>());
    EXPECT_EQ(mt->Filterable(), TextureFilterable::kUnfilterable);
}

}  // namespace
}  // namespace tint::core::type
