/* ************************************************************************
 * Copyright (C) 2018-2025 Advanced Micro Devices, Inc. All rights reserved.
 *
 * 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 cop-
 * ies 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 IM-
 * PLIED, 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 CONNE-
 * CTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * ************************************************************************ */

#pragma once

#include "testing_common.hpp"

template <typename T, bool CONJ = false>
void testing_ger_bad_arg(const Arguments& arg)
{
    auto rocblas_ger_fn = arg.api & c_API_FORTRAN
                              ? (CONJ ? rocblas_ger<T, true, true> : rocblas_ger<T, false, true>)
                              : (CONJ ? rocblas_ger<T, true, false> : rocblas_ger<T, false, false>);
    auto rocblas_ger_fn_64
        = arg.api & c_API_FORTRAN
              ? (CONJ ? rocblas_ger_64<T, true, true> : rocblas_ger_64<T, false, true>)
              : (CONJ ? rocblas_ger_64<T, true, false> : rocblas_ger_64<T, false, false>);

    for(auto pointer_mode : {rocblas_pointer_mode_host, rocblas_pointer_mode_device})
    {
        rocblas_local_handle handle{arg};
        CHECK_ROCBLAS_ERROR(rocblas_set_pointer_mode(handle, pointer_mode));

        int64_t M    = 100;
        int64_t N    = 100;
        int64_t incx = 1;
        int64_t incy = 1;
        int64_t lda  = 100;

        DEVICE_MEMCHECK(device_vector<T>, alpha_d, (1));
        DEVICE_MEMCHECK(device_vector<T>, zero_d, (1));

        const T alpha_h(1), zero_h(0);

        const T* alpha = &alpha_h;
        const T* zero  = &zero_h;

        if(pointer_mode == rocblas_pointer_mode_device)
        {
            CHECK_HIP_ERROR(hipMemcpy(alpha_d, alpha, sizeof(*alpha), hipMemcpyHostToDevice));
            alpha = alpha_d;
            CHECK_HIP_ERROR(hipMemcpy(zero_d, zero, sizeof(*zero), hipMemcpyHostToDevice));
            zero = zero_d;
        }

        // Allocate device memory
        DEVICE_MEMCHECK(device_matrix<T>, dA, (M, N, lda));
        DEVICE_MEMCHECK(device_vector<T>, dx, (M, incx));
        DEVICE_MEMCHECK(device_vector<T>, dy, (N, incy));

        DAPI_EXPECT(rocblas_status_invalid_handle,
                    rocblas_ger_fn,
                    (nullptr, M, N, alpha, dx, incx, dy, incy, dA, lda));

        DAPI_EXPECT(rocblas_status_invalid_pointer,
                    rocblas_ger_fn,
                    (handle, M, N, nullptr, dx, incx, dy, incy, dA, lda));

        if(pointer_mode == rocblas_pointer_mode_host)
        {
            DAPI_EXPECT(rocblas_status_invalid_pointer,
                        rocblas_ger_fn,
                        (handle, M, N, alpha, nullptr, incx, dy, incy, dA, lda));

            DAPI_EXPECT(rocblas_status_invalid_pointer,
                        rocblas_ger_fn,
                        (handle, M, N, alpha, dx, incx, nullptr, incy, dA, lda));

            DAPI_EXPECT(rocblas_status_invalid_pointer,
                        rocblas_ger_fn,
                        (handle, M, N, alpha, dx, incx, dy, incy, nullptr, lda));
        }

        // N==0 all pointers may be null
        DAPI_CHECK(rocblas_ger_fn, (handle, M, 0, nullptr, dx, incx, nullptr, incy, nullptr, lda));

        // alpha==0 all pointers may be null
        DAPI_CHECK(rocblas_ger_fn,
                   (handle, M, N, zero, nullptr, incx, nullptr, incy, nullptr, lda));
    }
}

template <typename T, bool CONJ = false>
void testing_ger(const Arguments& arg)
{
    auto rocblas_ger_fn = arg.api & c_API_FORTRAN
                              ? (CONJ ? rocblas_ger<T, true, true> : rocblas_ger<T, false, true>)
                              : (CONJ ? rocblas_ger<T, true, false> : rocblas_ger<T, false, false>);
    auto rocblas_ger_fn_64
        = arg.api & c_API_FORTRAN
              ? (CONJ ? rocblas_ger_64<T, true, true> : rocblas_ger_64<T, false, true>)
              : (CONJ ? rocblas_ger_64<T, true, false> : rocblas_ger_64<T, false, false>);

    int64_t M       = arg.M;
    int64_t N       = arg.N;
    int64_t incx    = arg.incx;
    int64_t incy    = arg.incy;
    int64_t lda     = arg.lda;
    T       h_alpha = arg.get_alpha<T>();

    rocblas_local_handle handle{arg};

    // argument check before allocating invalid memory
    if(M < 0 || N < 0 || lda < M || lda < 1 || !incx || !incy)
    {
        DAPI_EXPECT(rocblas_status_invalid_size,
                    rocblas_ger_fn,
                    (handle, M, N, nullptr, nullptr, incx, nullptr, incy, nullptr, lda));

        return;
    }

    // Naming: `h` is in CPU (host) memory(eg hA), `d` is in GPU (device) memory (eg dA).
    // Allocate host memory
    HOST_MEMCHECK(host_matrix<T>, hA, (M, N, lda));
    HOST_MEMCHECK(host_matrix<T>, hA_gold, (M, N, lda));
    HOST_MEMCHECK(host_vector<T>, hx, (M, incx));
    HOST_MEMCHECK(host_vector<T>, hy, (N, incy));
    HOST_MEMCHECK(host_vector<T>, halpha, (1));
    halpha[0] = h_alpha;

    // Allocate device memory
    DEVICE_MEMCHECK(device_matrix<T>, dA, (M, N, lda));
    DEVICE_MEMCHECK(device_vector<T>, dx, (M, incx));
    DEVICE_MEMCHECK(device_vector<T>, dy, (N, incy));
    DEVICE_MEMCHECK(device_vector<T>, d_alpha, (1));

    // Initialize data on host memory
    rocblas_init_matrix(hA, arg, rocblas_client_never_set_nan, rocblas_client_general_matrix, true);
    rocblas_init_vector(hx, arg, rocblas_client_alpha_sets_nan, false, true);
    rocblas_init_vector(hy, arg, rocblas_client_alpha_sets_nan);

    // copy matrix is easy in STL; hA_gold = hA: save a copy in hA_gold which will be output of
    // CPU BLAS
    hA_gold = hA;

    // Transfer data from CPU to device
    CHECK_HIP_ERROR(dA.transfer_from(hA));
    CHECK_HIP_ERROR(dx.transfer_from(hx));
    CHECK_HIP_ERROR(dy.transfer_from(hy));

    double cpu_time_used;
    double rocblas_error_host;
    double rocblas_error_device;

    if(arg.unit_check || arg.norm_check)
    {
        if(arg.pointer_mode_host)
        {
            CHECK_ROCBLAS_ERROR(rocblas_set_pointer_mode(handle, rocblas_pointer_mode_host));
            handle.pre_test(arg);
            DAPI_CHECK(rocblas_ger_fn, (handle, M, N, &h_alpha, dx, incx, dy, incy, dA, lda));
            handle.post_test(arg);

            // Transfer output from device to CPU
            CHECK_HIP_ERROR(hA.transfer_from(dA));
        }

        if(arg.pointer_mode_device)
        {
            CHECK_HIP_ERROR(d_alpha.transfer_from(halpha));
            CHECK_HIP_ERROR(dA.transfer_from(hA_gold)); // gold still original hA

            CHECK_ROCBLAS_ERROR(rocblas_set_pointer_mode(handle, rocblas_pointer_mode_device));
            handle.pre_test(arg);
            DAPI_CHECK(rocblas_ger_fn, (handle, M, N, d_alpha, dx, incx, dy, incy, dA, lda));
            handle.post_test(arg);

            if(arg.repeatability_check)
            {
                HOST_MEMCHECK(host_matrix<T>, hA_copy, (M, N, lda));
                CHECK_HIP_ERROR(hA.transfer_from(dA));

                // multi-GPU support
                int device_id, device_count;
                CHECK_HIP_ERROR(limit_device_count(device_count, (int)arg.devices));

                for(int dev_id = 0; dev_id < device_count; dev_id++)
                {
                    CHECK_HIP_ERROR(hipGetDevice(&device_id));
                    if(device_id != dev_id)
                        CHECK_HIP_ERROR(hipSetDevice(dev_id));

                    //New rocblas handle for new device
                    rocblas_local_handle handle_copy{arg};
                    // Allocate device memory in new device
                    DEVICE_MEMCHECK(device_matrix<T>, dA_copy, (M, N, lda));
                    DEVICE_MEMCHECK(device_vector<T>, dx_copy, (M, incx));
                    DEVICE_MEMCHECK(device_vector<T>, dy_copy, (N, incy));
                    DEVICE_MEMCHECK(device_vector<T>, d_alpha_copy, (1));

                    CHECK_HIP_ERROR(dx_copy.transfer_from(hx));
                    CHECK_HIP_ERROR(dy_copy.transfer_from(hy));
                    CHECK_HIP_ERROR(d_alpha_copy.transfer_from(halpha));

                    CHECK_ROCBLAS_ERROR(
                        rocblas_set_pointer_mode(handle_copy, rocblas_pointer_mode_device));

                    for(int runs = 0; runs < arg.iters; runs++)
                    {
                        CHECK_HIP_ERROR(dA_copy.transfer_from(hA_gold)); // gold still original hA

                        DAPI_CHECK(rocblas_ger_fn,
                                   (handle_copy,
                                    M,
                                    N,
                                    d_alpha_copy,
                                    dx_copy,
                                    incx,
                                    dy_copy,
                                    incy,
                                    dA_copy,
                                    lda));
                        CHECK_HIP_ERROR(hA_copy.transfer_from(dA_copy));
                        unit_check_general<T>(M, N, lda, hA, hA_copy);
                    }
                }
                return;
            }
        }

        // CPU BLAS
        cpu_time_used = get_time_us_no_sync();

        ref_ger<T, CONJ>(M, N, h_alpha, hx, incx, hy, incy, hA_gold, lda);

        cpu_time_used = get_time_us_no_sync() - cpu_time_used;

        if(arg.pointer_mode_host)
        {
            if(arg.unit_check)
            {
                if(std::is_same_v<T, float> || std::is_same_v<T, double>)
                {
                    unit_check_general<T>(M, N, lda, hA_gold, hA);
                }
                else
                {
                    const double tol = N * sum_error_tolerance<T>;
                    near_check_general<T>(M, N, lda, hA_gold, hA, tol);
                }
            }

            if(arg.norm_check)
            {
                rocblas_error_host = norm_check_general<T>('F', M, N, lda, hA_gold, hA);
            }
        }

        if(arg.pointer_mode_device)
        {
            CHECK_HIP_ERROR(hA.transfer_from(dA));
            if(arg.unit_check)
            {
                if(std::is_same_v<T, float> || std::is_same_v<T, double>)
                {
                    unit_check_general<T>(M, N, lda, hA_gold, hA);
                }
                else
                {
                    const double tol = N * sum_error_tolerance<T>;
                    near_check_general<T>(M, N, lda, hA_gold, hA, tol);
                }
            }

            if(arg.norm_check)
            {
                rocblas_error_device = norm_check_general<T>('F', M, N, lda, hA_gold, hA);
            }
        }
    }

    if(arg.timing)
    {
        double gpu_time_used;
        int    number_cold_calls = arg.cold_iters;
        int    total_calls       = number_cold_calls + arg.iters;

        CHECK_ROCBLAS_ERROR(rocblas_set_pointer_mode(handle, rocblas_pointer_mode_host));

        hipStream_t stream;
        CHECK_ROCBLAS_ERROR(rocblas_get_stream(handle, &stream));

        for(int iter = 0; iter < total_calls; iter++)
        {
            if(iter == number_cold_calls)
                gpu_time_used = get_time_us_sync(stream);

            DAPI_DISPATCH(rocblas_ger_fn, (handle, M, N, &h_alpha, dx, incx, dy, incy, dA, lda));
        }

        gpu_time_used = get_time_us_sync(stream) - gpu_time_used;

        ArgumentModel<e_M, e_N, e_alpha, e_lda, e_incx, e_incy>{}.log_args<T>(
            rocblas_cout,
            arg,
            gpu_time_used,
            ger_gflop_count<T>(M, N),
            ger_gbyte_count<T>(M, N),
            cpu_time_used,
            rocblas_error_host,
            rocblas_error_device);
    }
}
