#include <sycl/sycl.hpp>
#include <oneapi/mkl.hpp>
#include "outprod.hpp"


void ggml_sycl_op_out_prod(ggml_backend_sycl_context& ctx, ggml_tensor* dst) {
    const ggml_tensor *src0 = dst->src[0];
    const ggml_tensor *src1 = dst->src[1];

    GGML_ASSERT(src0->type == GGML_TYPE_F32);
    GGML_ASSERT(src1->type == GGML_TYPE_F32);
    GGML_ASSERT(dst->type == GGML_TYPE_F32);
    GGML_ASSERT(ggml_is_contiguous(src0));
    GGML_ASSERT(ggml_is_contiguous(dst));

    GGML_TENSOR_BINARY_OP_LOCALS

    // Get SYCL queue
    dpct::queue_ptr stream = ctx.stream();

    // Dimension checks
    GGML_ASSERT(ne01 == ne11);  // Inner dimensions must match
    GGML_ASSERT(ne0 == ne00);   // Output rows match src0 rows
    GGML_ASSERT(ne1 == ne10);   // Output cols match src1 cols

    // Get data pointers
    const float* src0_d = (const float*)src0->data;
    const float* src1_d = (const float*)src1->data;
    float* dst_d = (float*)dst->data;

    // GEMM parameters
    const float alpha = 1.0f;
    const float beta = 0.0f;

    // Handle transposition of src1
    const bool src1_T = ggml_is_transposed(src1);
    const oneapi::mkl::transpose src1_op =
        src1_T ? oneapi::mkl::transpose::nontrans : oneapi::mkl::transpose::trans;
    const int64_t ldb = (src1_T ? nb10 : nb11) / sizeof(float);

    try {
        // Perform matrix multiplication using oneMKL GEMM
#ifdef GGML_SYCL_NVIDIA
        oneapi::mkl::blas::column_major::gemm(oneapi::mkl::backend_selector<oneapi::mkl::backend::cublas>{ *stream },
                                              oneapi::mkl::transpose::nontrans, src1_op, ne0, ne1, ne01, alpha, src0_d,
                                              ne00, src1_d, ldb, beta, dst_d, ne0);
#else
        oneapi::mkl::blas::column_major::gemm(*stream, oneapi::mkl::transpose::nontrans, src1_op, ne0, ne1, ne01, alpha,
                                              src0_d, ne00, src1_d, ldb, beta, dst_d, ne0);
#endif
    }
    catch (sycl::exception const& exc) {
        std::cerr << exc.what() << std::endl;
        GGML_ASSERT(false);
    }
}
