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#include "src/dawn/node/binding/GPUComputePassEncoder.h"

#include <utility>

#include "src/dawn/node/binding/Converter.h"
#include "src/dawn/node/binding/GPUBindGroup.h"
#include "src/dawn/node/binding/GPUBuffer.h"
#include "src/dawn/node/binding/GPUComputePipeline.h"
#include "src/dawn/node/binding/GPUQuerySet.h"
#include "src/dawn/node/binding/GPUResourceTable.h"
#include "src/utils/compiler.h"

namespace wgpu::binding {

////////////////////////////////////////////////////////////////////////////////
// wgpu::bindings::GPUComputePassEncoder
////////////////////////////////////////////////////////////////////////////////
GPUComputePassEncoder::GPUComputePassEncoder(const wgpu::ComputePassDescriptor& desc,
                                             wgpu::ComputePassEncoder enc)
    : enc_(std::move(enc)), label_(CopyLabel(desc.label)) {}

void GPUComputePassEncoder::setPipeline(Napi::Env,
                                        interop::Interface<interop::GPUComputePipeline> pipeline) {
    enc_.SetPipeline(*pipeline.As<GPUComputePipeline>());
}

void GPUComputePassEncoder::dispatchWorkgroups(Napi::Env,
                                               interop::GPUSize32 workgroupCountX,
                                               interop::GPUSize32 workgroupCountY,
                                               interop::GPUSize32 workgroupCountZ) {
    enc_.DispatchWorkgroups(workgroupCountX, workgroupCountY, workgroupCountZ);
}

void GPUComputePassEncoder::dispatchWorkgroupsIndirect(
    Napi::Env,
    interop::Interface<interop::GPUBuffer> indirectBuffer,
    interop::GPUSize64 indirectOffset) {
    enc_.DispatchWorkgroupsIndirect(*indirectBuffer.As<GPUBuffer>(), indirectOffset);
}

void GPUComputePassEncoder::end(Napi::Env) {
    enc_.End();
}

void GPUComputePassEncoder::setBindGroup(
    Napi::Env env,
    interop::GPUIndex32 index,
    std::optional<interop::Interface<interop::GPUBindGroup>> bindGroup,
    std::vector<interop::GPUBufferDynamicOffset> dynamicOffsets) {
    Converter conv(env);

    wgpu::BindGroup bg{};
    uint32_t* offsets = nullptr;
    size_t num_offsets = 0;
    if (!conv(bg, bindGroup) || !conv(offsets, num_offsets, dynamicOffsets)) {
        return;
    }

    enc_.SetBindGroup(index, bg, num_offsets, offsets);
}

void GPUComputePassEncoder::setBindGroup(
    Napi::Env env,
    interop::GPUIndex32 index,
    std::optional<interop::Interface<interop::GPUBindGroup>> bindGroup,
    interop::Uint32Array dynamicOffsetsData,
    interop::GPUSize64 dynamicOffsetsDataStart,
    interop::GPUSize32 dynamicOffsetsDataLength) {
    Converter conv(env);

    wgpu::BindGroup bg{};
    if (!conv(bg, bindGroup)) {
        return;
    }

    if (dynamicOffsetsDataStart > dynamicOffsetsData.ElementLength()) {
        Napi::RangeError::New(env, "dynamicOffsetsDataStart is out of bound of dynamicOffsetData")
            .ThrowAsJavaScriptException();
        return;
    }

    if (dynamicOffsetsDataLength > dynamicOffsetsData.ElementLength() - dynamicOffsetsDataStart) {
        Napi::RangeError::New(env,
                              "dynamicOffsetsDataLength + dynamicOffsetsDataStart is out of "
                              "bound of dynamicOffsetData")
            .ThrowAsJavaScriptException();
        return;
    }

    enc_.SetBindGroup(index, bg, dynamicOffsetsDataLength,
                      DAWN_UNSAFE_TODO(dynamicOffsetsData.Data() + dynamicOffsetsDataStart));
}

void GPUComputePassEncoder::setImmediates(Napi::Env env,
                                          interop::GPUSize32 rangeOffset,
                                          interop::AllowSharedBufferSource data,
                                          interop::GPUSize64 dataOffsetElements,
                                          std::optional<interop::GPUSize64> sizeElements) {
    std::span<const uint8_t> dataSpan;
    if (!ConvertDataElementsToSpan(env, &dataSpan, data, dataOffsetElements, sizeElements)) {
        return;
    }

    enc_.SetImmediates(rangeOffset, dataSpan.data(), dataSpan.size());
}

void GPUComputePassEncoder::setResourceTable(
    Napi::Env env,
    std::optional<interop::Interface<interop::GPUResourceTable>> table) {
    Converter conv(env);

    wgpu::ResourceTable resourceTable{};
    if (!conv(resourceTable, table)) {
        return;
    }

    enc_.SetResourceTable(resourceTable);
}

void GPUComputePassEncoder::pushDebugGroup(Napi::Env, std::string groupLabel) {
    enc_.PushDebugGroup(groupLabel.c_str());
}

void GPUComputePassEncoder::popDebugGroup(Napi::Env) {
    enc_.PopDebugGroup();
}

void GPUComputePassEncoder::insertDebugMarker(Napi::Env, std::string markerLabel) {
    enc_.InsertDebugMarker(markerLabel.c_str());
}

std::string GPUComputePassEncoder::getLabel(Napi::Env) {
    return label_;
}

void GPUComputePassEncoder::setLabel(Napi::Env, std::string value) {
    enc_.SetLabel(std::string_view(value));
    label_ = value;
}

}  // namespace wgpu::binding
