// Copyright 2021 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include "src/tint/lang/wgsl/inspector/resource_binding.h"

#include "src/tint/lang/core/enums.h"
#include "src/tint/lang/core/type/array.h"
#include "src/tint/lang/core/type/f32.h"
#include "src/tint/lang/core/type/i32.h"
#include "src/tint/lang/core/type/matrix.h"
#include "src/tint/lang/core/type/texture_dimension.h"
#include "src/tint/lang/core/type/type.h"
#include "src/tint/lang/core/type/u32.h"
#include "src/tint/lang/core/type/vector.h"

namespace tint::inspector {

ResourceBinding::TextureDimension TypeTextureDimensionToResourceBindingTextureDimension(
    const core::type::TextureDimension& type_dim) {
    switch (type_dim) {
        case core::type::TextureDimension::k1d:
            return ResourceBinding::TextureDimension::k1d;
        case core::type::TextureDimension::k2d:
            return ResourceBinding::TextureDimension::k2d;
        case core::type::TextureDimension::k2dArray:
            return ResourceBinding::TextureDimension::k2dArray;
        case core::type::TextureDimension::k3d:
            return ResourceBinding::TextureDimension::k3d;
        case core::type::TextureDimension::kCube:
            return ResourceBinding::TextureDimension::kCube;
        case core::type::TextureDimension::kCubeArray:
            return ResourceBinding::TextureDimension::kCubeArray;
        case core::type::TextureDimension::kNone:
            return ResourceBinding::TextureDimension::kNone;
    }
    return ResourceBinding::TextureDimension::kNone;
}

ResourceBinding::SampledKind ToFilterableSampledKind(const core::type::SampledTexture* tex) {
    switch (tex->Filterable()) {
        case core::TextureFilterable::kFilterable:
            return ResourceBinding::SampledKind::kFilterable;
        case core::TextureFilterable::kUnfilterable:
            return ResourceBinding::SampledKind::kUnfilterable;
        default:
            break;
    }
    // We don't want to say `float` in this case, we want `unknown-filterable` to signify the
    // unknown filterablity.
    if (tex->Type()->Is<core::type::F32>()) {
        return ResourceBinding::SampledKind::kUnknownFilterable;
    }

    return BaseTypeToSampledKind(tex->Type());
}

ResourceBinding::SampledKind BaseTypeToSampledKind(const core::type::Type* base_type) {
    TINT_ASSERT(base_type);

    if (base_type->Is<core::type::F32>()) {
        return ResourceBinding::SampledKind::kFloat;
    }
    if (base_type->Is<core::type::U32>()) {
        return ResourceBinding::SampledKind::kUInt;
    }
    if (base_type->Is<core::type::I32>()) {
        return ResourceBinding::SampledKind::kSInt;
    }
    TINT_UNREACHABLE();
}

ResourceBinding::SamplerType SamplerToSamplerType(const core::type::Sampler* sampler) {
    if (sampler->Kind() == core::type::SamplerKind::kSampler) {
        switch (sampler->Filtering()) {
            case core::SamplerFiltering::kFiltering:
                return ResourceBinding::SamplerType::kFiltering;
            case core::SamplerFiltering::kNonFiltering:
                return ResourceBinding::SamplerType::kNonFiltering;
            default:
                return ResourceBinding::SamplerType::kUnknownFiltering;
        }
    }
    if (sampler->Kind() == core::type::SamplerKind::kComparisonSampler) {
        return ResourceBinding::SamplerType::kComparison;
    }
    TINT_UNREACHABLE();
}

ResourceBinding::TexelFormat TypeTexelFormatToResourceBindingTexelFormat(
    const core::TexelFormat& image_format) {
    switch (image_format) {
        case core::TexelFormat::kR8Snorm:
            return ResourceBinding::TexelFormat::kR8Snorm;
        case core::TexelFormat::kR8Uint:
            return ResourceBinding::TexelFormat::kR8Uint;
        case core::TexelFormat::kR8Sint:
            return ResourceBinding::TexelFormat::kR8Sint;
        case core::TexelFormat::kRg8Unorm:
            return ResourceBinding::TexelFormat::kRg8Unorm;
        case core::TexelFormat::kRg8Snorm:
            return ResourceBinding::TexelFormat::kRg8Snorm;
        case core::TexelFormat::kRg8Uint:
            return ResourceBinding::TexelFormat::kRg8Uint;
        case core::TexelFormat::kRg8Sint:
            return ResourceBinding::TexelFormat::kRg8Sint;
        case core::TexelFormat::kR16Unorm:
            return ResourceBinding::TexelFormat::kR16Unorm;
        case core::TexelFormat::kR16Snorm:
            return ResourceBinding::TexelFormat::kR16Snorm;
        case core::TexelFormat::kR16Uint:
            return ResourceBinding::TexelFormat::kR16Uint;
        case core::TexelFormat::kR16Sint:
            return ResourceBinding::TexelFormat::kR16Sint;
        case core::TexelFormat::kR16Float:
            return ResourceBinding::TexelFormat::kR16Float;
        case core::TexelFormat::kRg16Unorm:
            return ResourceBinding::TexelFormat::kRg16Unorm;
        case core::TexelFormat::kRg16Snorm:
            return ResourceBinding::TexelFormat::kRg16Snorm;
        case core::TexelFormat::kRg16Uint:
            return ResourceBinding::TexelFormat::kRg16Uint;
        case core::TexelFormat::kRg16Sint:
            return ResourceBinding::TexelFormat::kRg16Sint;
        case core::TexelFormat::kRg16Float:
            return ResourceBinding::TexelFormat::kRg16Float;
        case core::TexelFormat::kRgb10A2Uint:
            return ResourceBinding::TexelFormat::kRgb10A2Uint;
        case core::TexelFormat::kRgb10A2Unorm:
            return ResourceBinding::TexelFormat::kRgb10A2Unorm;
        case core::TexelFormat::kRg11B10Ufloat:
            return ResourceBinding::TexelFormat::kRg11B10Ufloat;
        case core::TexelFormat::kBgra8Unorm:
            return ResourceBinding::TexelFormat::kBgra8Unorm;
        case core::TexelFormat::kR32Uint:
            return ResourceBinding::TexelFormat::kR32Uint;
        case core::TexelFormat::kR32Sint:
            return ResourceBinding::TexelFormat::kR32Sint;
        case core::TexelFormat::kR32Float:
            return ResourceBinding::TexelFormat::kR32Float;
        case core::TexelFormat::kRgba8Unorm:
            return ResourceBinding::TexelFormat::kRgba8Unorm;
        case core::TexelFormat::kRgba8Snorm:
            return ResourceBinding::TexelFormat::kRgba8Snorm;
        case core::TexelFormat::kRgba8Uint:
            return ResourceBinding::TexelFormat::kRgba8Uint;
        case core::TexelFormat::kRgba8Sint:
            return ResourceBinding::TexelFormat::kRgba8Sint;
        case core::TexelFormat::kRg32Uint:
            return ResourceBinding::TexelFormat::kRg32Uint;
        case core::TexelFormat::kRg32Sint:
            return ResourceBinding::TexelFormat::kRg32Sint;
        case core::TexelFormat::kRg32Float:
            return ResourceBinding::TexelFormat::kRg32Float;
        case core::TexelFormat::kRgba16Unorm:
            return ResourceBinding::TexelFormat::kRgba16Unorm;
        case core::TexelFormat::kRgba16Snorm:
            return ResourceBinding::TexelFormat::kRgba16Snorm;
        case core::TexelFormat::kRgba16Uint:
            return ResourceBinding::TexelFormat::kRgba16Uint;
        case core::TexelFormat::kRgba16Sint:
            return ResourceBinding::TexelFormat::kRgba16Sint;
        case core::TexelFormat::kRgba16Float:
            return ResourceBinding::TexelFormat::kRgba16Float;
        case core::TexelFormat::kRgba32Uint:
            return ResourceBinding::TexelFormat::kRgba32Uint;
        case core::TexelFormat::kRgba32Sint:
            return ResourceBinding::TexelFormat::kRgba32Sint;
        case core::TexelFormat::kRgba32Float:
            return ResourceBinding::TexelFormat::kRgba32Float;
        case core::TexelFormat::kR8Unorm:
            return ResourceBinding::TexelFormat::kR8Unorm;
        case core::TexelFormat::kUndefined:
            return ResourceBinding::TexelFormat::kNone;
    }
    return ResourceBinding::TexelFormat::kNone;
}

}  // namespace tint::inspector
