/* ************************************************************************
 * Copyright (C) 2020-2023 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 "bytes.hpp"
#include "cblas_interface.hpp"
#include "flops.hpp"
#include "near.hpp"
#include "norm.hpp"
#include "rocblas.hpp"
#include "rocblas_datatype2string.hpp"
#include "rocblas_init.hpp"
#include "rocblas_math.hpp"
#include "rocblas_matrix.hpp"
#include "rocblas_random.hpp"
#include "rocblas_test.hpp"
#include "rocblas_vector.hpp"
#include "unit.hpp"
#include "utility.hpp"

template <typename T, bool HERM>
void testing_symm_hemm_strided_batched_bad_arg(const Arguments& arg)
{
    auto rocblas_fn = HERM ? (arg.api == FORTRAN ? rocblas_hemm_strided_batched<T, true>
                                                 : rocblas_hemm_strided_batched<T, false>)
                           : (arg.api == FORTRAN ? rocblas_symm_strided_batched<T, true>
                                                 : rocblas_symm_strided_batched<T, 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));

        const rocblas_side side        = rocblas_side_left;
        const rocblas_fill uplo        = rocblas_fill_upper;
        const rocblas_int  M           = 100;
        const rocblas_int  N           = 100;
        const rocblas_int  lda         = 100;
        const rocblas_int  ldb         = 100;
        const rocblas_int  ldc         = 100;
        rocblas_stride     strideA     = 1;
        rocblas_stride     strideB     = 1;
        rocblas_stride     strideC     = 1;
        rocblas_int        batch_count = 2;

        device_vector<T> alpha_d(1), beta_d(1), one_d(1), zero_d(1);

        const T alpha_h(1), beta_h(2), one_h(1), zero_h(0);

        const T* alpha = &alpha_h;
        const T* beta  = &beta_h;
        const T* one   = &one_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(beta_d, beta, sizeof(*beta), hipMemcpyHostToDevice));
            beta = beta_d;
            CHECK_HIP_ERROR(hipMemcpy(one_d, one, sizeof(*one), hipMemcpyHostToDevice));
            one = one_d;
            CHECK_HIP_ERROR(hipMemcpy(zero_d, zero, sizeof(*zero), hipMemcpyHostToDevice));
            zero = zero_d;
        }

        size_t rows = (side == rocblas_side_left ? N : M);
        size_t cols = (side == rocblas_side_left ? M : N);

        // Allocate device memory
        device_strided_batch_matrix<T> dA(rows, cols, lda, strideA, batch_count);
        device_strided_batch_matrix<T> dB(M, N, ldb, strideB, batch_count);
        device_strided_batch_matrix<T> dC(M, N, ldc, strideC, batch_count);

        // Check device memory allocation
        CHECK_DEVICE_ALLOCATION(dA.memcheck());
        CHECK_DEVICE_ALLOCATION(dB.memcheck());
        CHECK_DEVICE_ALLOCATION(dC.memcheck());

        EXPECT_ROCBLAS_STATUS(rocblas_fn(nullptr,
                                         side,
                                         uplo,
                                         M,
                                         N,
                                         alpha,
                                         dA,
                                         lda,
                                         strideA,
                                         dB,
                                         ldb,
                                         strideB,
                                         beta,
                                         dC,
                                         ldc,
                                         strideC,
                                         batch_count),
                              rocblas_status_invalid_handle);

        EXPECT_ROCBLAS_STATUS(rocblas_fn(handle,
                                         rocblas_side_both,
                                         uplo,
                                         M,
                                         N,
                                         alpha,
                                         dA,
                                         lda,
                                         strideA,
                                         dB,
                                         ldb,
                                         strideB,
                                         beta,
                                         dC,
                                         ldc,
                                         strideC,
                                         batch_count),
                              rocblas_status_invalid_value);

        EXPECT_ROCBLAS_STATUS(rocblas_fn(handle,
                                         side,
                                         rocblas_fill_full,
                                         M,
                                         N,
                                         alpha,
                                         dA,
                                         lda,
                                         strideA,
                                         dB,
                                         ldb,
                                         strideB,
                                         beta,
                                         dC,
                                         ldc,
                                         strideC,
                                         batch_count),
                              rocblas_status_invalid_value);

        EXPECT_ROCBLAS_STATUS(rocblas_fn(handle,
                                         side,
                                         uplo,
                                         M,
                                         N,
                                         nullptr,
                                         dA,
                                         lda,
                                         strideA,
                                         dB,
                                         ldb,
                                         strideB,
                                         beta,
                                         dC,
                                         ldc,
                                         strideC,
                                         batch_count),
                              rocblas_status_invalid_pointer);

        EXPECT_ROCBLAS_STATUS(rocblas_fn(handle,
                                         side,
                                         uplo,
                                         M,
                                         N,
                                         alpha,
                                         dA,
                                         lda,
                                         strideA,
                                         dB,
                                         ldb,
                                         strideB,
                                         nullptr,
                                         dC,
                                         ldc,
                                         strideC,
                                         batch_count),
                              rocblas_status_invalid_pointer);

        if(pointer_mode == rocblas_pointer_mode_host)
        {
            EXPECT_ROCBLAS_STATUS(rocblas_fn(handle,
                                             side,
                                             uplo,
                                             M,
                                             N,
                                             alpha,
                                             nullptr,
                                             lda,
                                             strideA,
                                             dB,
                                             ldb,
                                             strideB,
                                             beta,
                                             dC,
                                             ldc,
                                             strideC,
                                             batch_count),
                                  rocblas_status_invalid_pointer);

            EXPECT_ROCBLAS_STATUS(rocblas_fn(handle,
                                             side,
                                             uplo,
                                             M,
                                             N,
                                             alpha,
                                             dA,
                                             lda,
                                             strideA,
                                             nullptr,
                                             ldb,
                                             strideB,
                                             beta,
                                             dC,
                                             ldc,
                                             strideC,
                                             batch_count),
                                  rocblas_status_invalid_pointer);

            EXPECT_ROCBLAS_STATUS(rocblas_fn(handle,
                                             side,
                                             uplo,
                                             M,
                                             N,
                                             alpha,
                                             dA,
                                             lda,
                                             strideA,
                                             dB,
                                             ldb,
                                             strideB,
                                             beta,
                                             nullptr,
                                             ldc,
                                             strideC,
                                             batch_count),
                                  rocblas_status_invalid_pointer);
        }

        // quick return with invalid pointers
        EXPECT_ROCBLAS_STATUS(rocblas_fn(handle,
                                         side,
                                         uplo,
                                         0,
                                         N,
                                         nullptr,
                                         nullptr,
                                         lda,
                                         strideA,
                                         nullptr,
                                         ldb,
                                         strideB,
                                         nullptr,
                                         nullptr,
                                         ldc,
                                         strideC,
                                         batch_count),
                              rocblas_status_success);

        // alpha==0 and beta==1 all pointers may be null
        EXPECT_ROCBLAS_STATUS(rocblas_fn(handle,
                                         side,
                                         uplo,
                                         M,
                                         N,
                                         zero,
                                         nullptr,
                                         lda,
                                         strideA,
                                         nullptr,
                                         ldb,
                                         strideB,
                                         one,
                                         nullptr,
                                         ldc,
                                         strideC,
                                         batch_count),
                              rocblas_status_success);
    }
}

template <typename T, bool HERM>
void testing_symm_hemm_strided_batched(const Arguments& arg)
{
    auto rocblas_fn     = HERM ? (arg.api == FORTRAN ? rocblas_hemm_strided_batched<T, true>
                                                     : rocblas_hemm_strided_batched<T, false>)
                               : (arg.api == FORTRAN ? rocblas_symm_strided_batched<T, true>
                                                     : rocblas_symm_strided_batched<T, false>);
    auto gflop_count_fn = HERM ? hemm_gflop_count<T> : symm_gflop_count<T>;

    rocblas_local_handle handle{arg};
    rocblas_side         side        = char2rocblas_side(arg.side);
    rocblas_fill         uplo        = char2rocblas_fill(arg.uplo);
    rocblas_int          M           = arg.M;
    rocblas_int          N           = arg.N;
    rocblas_int          lda         = arg.lda;
    rocblas_int          ldb         = arg.ldb;
    rocblas_int          ldc         = arg.ldc;
    T                    alpha       = arg.get_alpha<T>();
    T                    beta        = arg.get_beta<T>();
    rocblas_stride       strideA     = arg.stride_a;
    rocblas_stride       strideB     = arg.stride_b;
    rocblas_stride       strideC     = arg.stride_c;
    rocblas_int          batch_count = arg.batch_count;

    double gpu_time_used, cpu_time_used;
    double err_host   = 0.0;
    double err_device = 0.0;

    // Note: N==0 is not an early exit, since C still needs to be multiplied by beta
    bool invalid_size = batch_count < 0 || M < 0 || N < 0 || ldc < M || ldb < M
                        || (side == rocblas_side_left && (lda < M))
                        || (side != rocblas_side_left && (lda < N));
    if(M == 0 || N == 0 || batch_count == 0 || invalid_size)
    {
        // ensure invalid sizes checked before pointer check
        EXPECT_ROCBLAS_STATUS(rocblas_fn(handle,
                                         side,
                                         uplo,
                                         M,
                                         N,
                                         nullptr,
                                         nullptr,
                                         lda,
                                         strideA,
                                         nullptr,
                                         ldb,
                                         strideB,
                                         nullptr,
                                         nullptr,
                                         ldc,
                                         strideC,
                                         batch_count),
                              invalid_size ? rocblas_status_invalid_size : rocblas_status_success);

        return;
    }

    size_t rows = (side == rocblas_side_left ? N : M);
    size_t cols = (side == rocblas_side_left ? M : N);

    strideA = std::max(strideA, rocblas_stride(lda * cols));
    strideB = std::max(strideB, rocblas_stride(size_t(ldb) * N));
    strideC = std::max(strideC, rocblas_stride(size_t(ldc) * N));

    // Naming: `h` is in CPU (host) memory(eg hA), `d` is in GPU (device) memory (eg dA).
    // Allocate host memory
    host_strided_batch_matrix<T> hA(rows, cols, lda, strideA, batch_count);
    host_strided_batch_matrix<T> hB(M, N, ldb, strideB, batch_count);
    host_strided_batch_matrix<T> hC(M, N, ldc, strideC, batch_count);
    host_strided_batch_matrix<T> hC_gold(M, N, ldc, strideC, batch_count);
    host_vector<T>               h_alpha(1);
    host_vector<T>               h_beta(1);

    // Check host memory allocation
    CHECK_HIP_ERROR(hA.memcheck());
    CHECK_HIP_ERROR(hB.memcheck());
    CHECK_HIP_ERROR(hC.memcheck());
    CHECK_HIP_ERROR(hC_gold.memcheck());

    // Initial Data on CPU
    h_alpha[0] = alpha;
    h_beta[0]  = beta;

    // Allocate device memory
    device_strided_batch_matrix<T> dA(rows, cols, lda, strideA, batch_count);
    device_strided_batch_matrix<T> dB(M, N, ldb, strideB, batch_count);
    device_strided_batch_matrix<T> dC(M, N, ldc, strideC, batch_count);
    device_vector<T>               d_alpha(1);
    device_vector<T>               d_beta(1);

    // Check device memory allocation
    CHECK_DEVICE_ALLOCATION(dA.memcheck());
    CHECK_DEVICE_ALLOCATION(dB.memcheck());
    CHECK_DEVICE_ALLOCATION(dC.memcheck());
    CHECK_DEVICE_ALLOCATION(d_alpha.memcheck());
    CHECK_DEVICE_ALLOCATION(d_beta.memcheck());

    // Initialize data on host memory
    if(HERM)
    {
        rocblas_init_matrix(
            hA, arg, rocblas_client_never_set_nan, rocblas_client_hermitian_matrix, true);
    }
    else
    {
        rocblas_init_matrix(
            hA, arg, rocblas_client_never_set_nan, rocblas_client_symmetric_matrix, true);
    }
    rocblas_init_matrix(
        hB, arg, rocblas_client_alpha_sets_nan, rocblas_client_general_matrix, false, true);
    rocblas_init_matrix(hC, arg, rocblas_client_beta_sets_nan, rocblas_client_general_matrix);

    hC.copy_from(hC);
    hC_gold.copy_from(hC);

    // copy data from CPU to device
    CHECK_HIP_ERROR(dA.transfer_from(hA));
    CHECK_HIP_ERROR(dB.transfer_from(hB));
    CHECK_HIP_ERROR(dC.transfer_from(hC));

    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);
            CHECK_ROCBLAS_ERROR(rocblas_fn(handle,
                                           side,
                                           uplo,
                                           M,
                                           N,
                                           &h_alpha[0],
                                           dA,
                                           lda,
                                           strideA,
                                           dB,
                                           ldb,
                                           strideB,
                                           &h_beta[0],
                                           dC,
                                           ldc,
                                           strideC,
                                           batch_count));
            handle.post_test(arg);

            CHECK_HIP_ERROR(hC.transfer_from(dC));
        }
        if(arg.pointer_mode_device)
        {
            CHECK_ROCBLAS_ERROR(rocblas_set_pointer_mode(handle, rocblas_pointer_mode_device));
            CHECK_HIP_ERROR(dC.transfer_from(hC_gold));
            CHECK_HIP_ERROR(d_alpha.transfer_from(h_alpha));
            CHECK_HIP_ERROR(d_beta.transfer_from(h_beta));

            CHECK_ROCBLAS_ERROR(rocblas_fn(handle,
                                           side,
                                           uplo,
                                           M,
                                           N,
                                           d_alpha,
                                           dA,
                                           lda,
                                           strideA,
                                           dB,
                                           ldb,
                                           strideB,
                                           d_beta,
                                           dC,
                                           ldc,
                                           strideC,
                                           batch_count));
        }

        // CPU BLAS
        cpu_time_used = get_time_us_no_sync();
        for(int b = 0; b < batch_count; b++)
        {
            if(HERM)
            {
                cblas_hemm<T>(
                    side, uplo, M, N, h_alpha, hA[b], lda, hB[b], ldb, h_beta, hC_gold[b], ldc);
            }
            else
            {
                cblas_symm<T>(side,
                              uplo,
                              M,
                              N,
                              h_alpha[0],
                              hA[b],
                              lda,
                              hB[b],
                              ldb,
                              h_beta[0],
                              hC_gold[b],
                              ldc);
            }
        }
        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,
                       rocblas_float_complex> || std::is_same_v<T, rocblas_double_complex>)
                {
                    const double tol = N * sum_error_tolerance<T>;
                    near_check_general<T>(M, N, ldc, strideC, hC_gold, hC, batch_count, tol);
                }
                else
                {
                    unit_check_general<T>(M, N, ldc, strideC, hC_gold, hC, batch_count);
                }
            }
            if(arg.norm_check)
            {
                err_host = std::abs(
                    norm_check_general<T>('F', M, N, ldc, strideC, hC_gold, hC, batch_count));
            }
        }
        if(arg.pointer_mode_device)
        {
            CHECK_HIP_ERROR(hC.transfer_from(dC));
            if(arg.unit_check)
            {
                if(std::is_same_v<
                       T,
                       rocblas_float_complex> || std::is_same_v<T, rocblas_double_complex>)
                {
                    const double tol = N * sum_error_tolerance<T>;
                    near_check_general<T>(M, N, ldc, strideC, hC_gold, hC, batch_count, tol);
                }
                else
                {
                    unit_check_general<T>(M, N, ldc, strideC, hC_gold, hC, batch_count);
                }
            }

            if(arg.norm_check)
            {
                err_device = std::abs(
                    norm_check_general<T>('F', M, N, ldc, strideC, hC_gold, hC, batch_count));
            }
        }
    }

    if(arg.timing)
    {
        int number_cold_calls = arg.cold_iters;
        int number_hot_calls  = arg.iters;

        CHECK_ROCBLAS_ERROR(rocblas_set_pointer_mode(handle, rocblas_pointer_mode_host));

        for(int i = 0; i < number_cold_calls; i++)
        {
            rocblas_fn(handle,
                       side,
                       uplo,
                       M,
                       N,
                       h_alpha,
                       dA,
                       lda,
                       strideA,
                       dB,
                       ldb,
                       strideB,
                       h_beta,
                       dC,
                       ldc,
                       strideC,
                       batch_count);
        }

        hipStream_t stream;
        CHECK_ROCBLAS_ERROR(rocblas_get_stream(handle, &stream));
        gpu_time_used = get_time_us_sync(stream); // in microseconds
        for(int i = 0; i < number_hot_calls; i++)
        {
            rocblas_fn(handle,
                       side,
                       uplo,
                       M,
                       N,
                       h_alpha,
                       dA,
                       lda,
                       strideA,
                       dB,
                       ldb,
                       strideB,
                       h_beta,
                       dC,
                       ldc,
                       strideC,
                       batch_count);
        }
        gpu_time_used = get_time_us_sync(stream) - gpu_time_used;

        Arguments targ(arg);
        targ.stride_a = strideA;
        targ.stride_b = strideB;
        targ.stride_c = strideC;
        ArgumentModel<e_side,
                      e_uplo,
                      e_M,
                      e_N,
                      e_alpha,
                      e_lda,
                      e_stride_a,
                      e_ldb,
                      e_stride_b,
                      e_beta,
                      e_ldc,
                      e_stride_c,
                      e_batch_count>{}
            .log_args<T>(rocblas_cout,
                         targ,
                         gpu_time_used,
                         gflop_count_fn(side, M, N),
                         ArgumentLogging::NA_value,
                         cpu_time_used,
                         err_host,
                         err_device);
    }
}
