/*
MIT License

Copyright (c) 2019 - 2024 Advanced Micro Devices, Inc.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/

#ifndef GUARD_RPP_OCLDEVICE_HPP
#define GUARD_RPP_OCLDEVICE_HPP

#if defined(__APPLE__) || defined(__MACOSX)
#include <OpenCL/cl.h>
#else
#include <CL/cl.h>
#endif

#include <rpp/errors.hpp>
#include <string>
#include <type_traits>

namespace rpp {
namespace detail {

template <int N>
struct ComputeDeviceAttributeReturnType;

template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_TYPE>
{
    using type = cl_device_type;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_VENDOR_ID>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_MAX_COMPUTE_UNITS>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_MAX_WORK_GROUP_SIZE>
{
    using type = size_t;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_MAX_WORK_ITEM_SIZES>
{
    using type = size_t*;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_PREFERRED_VECTOR_WIDTH_CHAR>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_PREFERRED_VECTOR_WIDTH_SHORT>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_PREFERRED_VECTOR_WIDTH_LONG>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_MAX_CLOCK_FREQUENCY>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_ADDRESS_BITS>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_MAX_READ_IMAGE_ARGS>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_MAX_WRITE_IMAGE_ARGS>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_MAX_MEM_ALLOC_SIZE>
{
    using type = cl_ulong;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_IMAGE2D_MAX_WIDTH>
{
    using type = size_t;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_IMAGE2D_MAX_HEIGHT>
{
    using type = size_t;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_IMAGE3D_MAX_WIDTH>
{
    using type = size_t;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_IMAGE3D_MAX_HEIGHT>
{
    using type = size_t;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_IMAGE3D_MAX_DEPTH>
{
    using type = size_t;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_IMAGE_SUPPORT>
{
    using type = cl_bool;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_MAX_PARAMETER_SIZE>
{
    using type = size_t;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_MAX_SAMPLERS>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_MEM_BASE_ADDR_ALIGN>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_MIN_DATA_TYPE_ALIGN_SIZE>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_SINGLE_FP_CONFIG>
{
    using type = cl_device_fp_config;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_GLOBAL_MEM_CACHE_TYPE>
{
    using type = cl_device_mem_cache_type;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_GLOBAL_MEM_CACHELINE_SIZE>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_GLOBAL_MEM_CACHE_SIZE>
{
    using type = cl_ulong;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_GLOBAL_MEM_SIZE>
{
    using type = cl_ulong;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE>
{
    using type = cl_long;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_MAX_CONSTANT_ARGS>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_LOCAL_MEM_TYPE>
{
    using type = cl_device_local_mem_type;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_LOCAL_MEM_SIZE>
{
    using type = cl_ulong;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_ERROR_CORRECTION_SUPPORT>
{
    using type = cl_bool;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_PROFILING_TIMER_RESOLUTION>
{
    using type = size_t;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_ENDIAN_LITTLE>
{
    using type = cl_bool;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_AVAILABLE>
{
    using type = cl_bool;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_COMPILER_AVAILABLE>
{
    using type = cl_bool;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_EXECUTION_CAPABILITIES>
{
    using type = cl_device_exec_capabilities;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_QUEUE_PROPERTIES>
{
    using type = cl_command_queue_properties;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_NAME>
{
    using type = char*;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_VENDOR>
{
    using type = char*;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DRIVER_VERSION>
{
    using type = char*;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_PROFILE>
{
    using type = char*;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_VERSION>
{
    using type = char*;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_EXTENSIONS>
{
    using type = char*;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_PLATFORM>
{
    using type = cl_platform_id;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_DOUBLE_FP_CONFIG>
{
    using type = cl_device_fp_config;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_PREFERRED_VECTOR_WIDTH_HALF>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_HOST_UNIFIED_MEMORY>
{
    using type = cl_bool;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_NATIVE_VECTOR_WIDTH_CHAR>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_NATIVE_VECTOR_WIDTH_SHORT>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_NATIVE_VECTOR_WIDTH_INT>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_NATIVE_VECTOR_WIDTH_LONG>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_NATIVE_VECTOR_WIDTH_FLOAT>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_NATIVE_VECTOR_WIDTH_HALF>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_OPENCL_C_VERSION>
{
    using type = char*;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_LINKER_AVAILABLE>
{
    using type = cl_bool;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_BUILT_IN_KERNELS>
{
    using type = char*;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_IMAGE_MAX_BUFFER_SIZE>
{
    using type = size_t;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_IMAGE_MAX_ARRAY_SIZE>
{
    using type = size_t;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_PARENT_DEVICE>
{
    using type = cl_device_id;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_PARTITION_MAX_SUB_DEVICES>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_PARTITION_AFFINITY_DOMAIN>
{
    using type = cl_device_affinity_domain;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_REFERENCE_COUNT>
{
    using type = cl_uint;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_PREFERRED_INTEROP_USER_SYNC>
{
    using type = cl_bool;
};
template <>
struct ComputeDeviceAttributeReturnType<CL_DEVICE_PRINTF_BUFFER_SIZE>
{
    using type = size_t;
};

template <int N>
struct ComputePlatformAttributeReturnType;

template <>
struct ComputePlatformAttributeReturnType<CL_PLATFORM_VENDOR>
{
    using type = char*;
};
template <>
struct ComputePlatformAttributeReturnType<CL_PLATFORM_EXTENSIONS>
{
    using type = char*;
};
template <>
struct ComputePlatformAttributeReturnType<CL_PLATFORM_NAME>
{
    using type = char*;
};
template <>
struct ComputePlatformAttributeReturnType<CL_PLATFORM_PROFILE>
{
    using type = char*;
};
template <>
struct ComputePlatformAttributeReturnType<CL_PLATFORM_VERSION>
{
    using type = char*;
};

template <int N>
using DeviceAttributeReturnType = typename ComputeDeviceAttributeReturnType<N>::type;

template <int N>
using PlatformAttributeReturnType = typename ComputePlatformAttributeReturnType<N>::type;

template <class T>
struct GetDeviceInfoImpl
{
    static T apply(int N, cl_device_id device)
    {
        T result;
        auto status = clGetDeviceInfo(device, N, sizeof(T), &result, nullptr);
        if(status != CL_SUCCESS)
        {
            RPP_THROW_CL_STATUS(status);
        }
        return result;
    }
};

template <>
struct GetDeviceInfoImpl<cl_device_id>
{
    static cl_device_id apply(int N, cl_device_id device)
    {
        cl_device_id result;
        auto status = clGetDeviceInfo(device, N, sizeof(cl_device_id), &result, nullptr);
        if(status != CL_SUCCESS)
        {
            RPP_THROW_CL_STATUS(status);
        }
        return result;
    }
};

template <>
struct GetDeviceInfoImpl<cl_platform_id>
{
    static cl_platform_id apply(int N, cl_device_id device)
    {
        cl_platform_id result;
        auto status = clGetDeviceInfo(device, N, sizeof(cl_platform_id), &result, nullptr);
        if(status != CL_SUCCESS)
        {
            RPP_THROW_CL_STATUS(status);
        }
        return result;
    }
};

template <class T>
struct GetDeviceInfoImpl<T*>
{
    using type =
        typename std::conditional<std::is_same<T, char>::value, std::string, std::vector<T>>::type;

    static int GetSize(int N, cl_device_id device)
    {
        size_t size;
        auto status = clGetDeviceInfo(device, N, 0, nullptr, &size);
        if(status != CL_SUCCESS)
        {
            RPP_THROW_CL_STATUS(status);
        }
        return (size / sizeof(T));
    }

    static type apply(int N, cl_device_id device)
    {
        type result(GetSize(N, device), 0);
        auto status = clGetDeviceInfo(
            device, N, result.size() * sizeof(T), reinterpret_cast<void*>(&result[0]), nullptr);
        if(status != CL_SUCCESS)
        {
            RPP_THROW_CL_STATUS(status);
        }
        if(std::is_same<T, char>())
        {
            result.pop_back();
        }
        return result;
    }
};

template <class T>
struct GetPlatformInfoImpl;

template <class T>
struct GetPlatformInfoImpl<T*>
{
    using type =
        typename std::conditional<std::is_same<T, char>::value, std::string, std::vector<T>>::type;

    static int GetSize(int N, cl_platform_id platform)
    {
        size_t size;
        auto status = clGetPlatformInfo(platform, N, 0, nullptr, &size);
        if(status != CL_SUCCESS)
        {
            RPP_THROW_CL_STATUS(status);
        }
        return (size / sizeof(T));
    }

    static type apply(int N, cl_platform_id platform)
    {
        type result(GetSize(N, platform), 0);
        auto status = clGetPlatformInfo(
            platform, N, result.size() * sizeof(T), reinterpret_cast<void*>(&result[0]), nullptr);
        if(status != CL_SUCCESS)
        {
            RPP_THROW_CL_STATUS(status);
        }
        if(std::is_same<T, char>())
        {
            result.pop_back();
        }
        return result;
    }
};
} // namespace detail

template <int N>
auto GetDeviceInfo(cl_device_id device)
    RPP_RETURNS(detail::GetDeviceInfoImpl<detail::DeviceAttributeReturnType<N>>::apply(N,
                                                                                          device));

template <int N>
auto GetPlatformInfo(cl_platform_id platform) RPP_RETURNS(
    detail::GetPlatformInfoImpl<detail::PlatformAttributeReturnType<N>>::apply(N, platform));

void ParseDevName(std::string& name);

} // namespace rpp
#endif // GUARD_RPP_OCLDEVICE_HPP
