#include "Matrix.h"

#include <string>
#include <cstring>
#include <iostream>
#include <complex>
//必须在mkl.h和Eigen的头之前，<complex>之后
#define MKL_Complex16 std::complex<double>
#include "mkl.h"

#include "Function.h"
namespace Aurora{
    typedef void(*CalcFuncD)(const MKL_INT n, const double a[], const MKL_INT inca, const double b[],
                             const MKL_INT incb, double r[], const MKL_INT incr);

    typedef void(*CalcFuncZ)(const MKL_INT n, const MKL_Complex16 a[], const MKL_INT inca, const MKL_Complex16 b[],
                             const MKL_INT incb, MKL_Complex16 r[], const MKL_INT incr);

    inline Matrix operatorMxA(CalcFuncD aFunc, double aScalar, const Matrix &aMatrix) {
        double *output = malloc(aMatrix.getDataSize(), aMatrix.getValueType() == Complex);
        aFunc(aMatrix.getDataSize(), aMatrix.getData(), 1, &aScalar, 0, output, 1);
        if (aMatrix.getValueType() == Complex) {
            aFunc(aMatrix.getDataSize(), aMatrix.getData() + 1, 1, &aScalar, 0, output + 1,
                  1);
        }
        return Matrix::New(output, aMatrix.getDimSize(0), aMatrix.getDimSize(1), aMatrix.getDimSize(2),
                                   aMatrix.getValueType());
    }

    inline Matrix operatorMxM(CalcFuncD aFuncD, CalcFuncZ aFuncZ, const Matrix &aMatrix,
                              const Matrix &aOther) {
        if (!aMatrix.compareShape(aOther))return Matrix();
        if (aMatrix.getValueType() != aOther.getValueType()) {
            double *output = malloc(aMatrix.getDataSize(), true);
            if (aMatrix.getValueType() == Complex) {
                aFuncD(aMatrix.getDataSize(), aMatrix.getData(), 1, aOther.getData(), 1,
                       output, 1);
                aFuncD(aMatrix.getDataSize(), aMatrix.getData() + 1, 1, aOther.getData(), 1,
                       output + 1,
                       1);
                return Matrix::New(output, aMatrix);
            }
            aFuncD(aMatrix.getDataSize(), aMatrix.getData(), 1, aOther.getData(), 1, output,
                   1);
            aFuncD(aMatrix.getDataSize(), aMatrix.getData(), 1, aOther.getData() + 1, 1,
                   output + 1, 1);
            return Matrix::New(output, aOther);
        } else if (aMatrix.getValueType() == Normal) {
            double *output = malloc(aMatrix.getDataSize());
            aFuncD(aMatrix.getDataSize(), aMatrix.getData(), 1, aOther.getData(), 1, output,
                   1);
            return Matrix::New(output, aMatrix);
        } else {
            double *output = malloc(aMatrix.getDataSize(), true);
            aFuncZ(aMatrix.getDataSize(), (std::complex<double> *) aMatrix.getData(), 1,
                   (std::complex<double> *) aOther.getData(), 1, (std::complex<double> *) output, 1);
            return Matrix::New(output, aOther);
        }
    }

    inline Matrix &operatorMxA_RR(CalcFuncD aFunc, double aScalar, Aurora::Matrix &&aMatrix) {
        std::cout << "use right ref operation" << std::endl;
        std::cout << "before operation" << std::endl;
        aMatrix.printf();
        if (aMatrix.getValueType() == Complex) {
            aFunc(aMatrix.getDataSize(), aMatrix.getData(), 1, &aScalar, 0,
                  aMatrix.getData(),
                  1);
            aFunc(aMatrix.getDataSize(), aMatrix.getData() + 1, 1, &aScalar, 0,
                  aMatrix.getData() + 1, 1);
        } else {
            aFunc(aMatrix.getDataSize(), aMatrix.getData(), 1, &aScalar, 0,
                   aMatrix.getData(),
                   1);
        }
        std::cout << "after operation" << std::endl;
        aMatrix.printf();
        return aMatrix;
    }

    inline Matrix operatorMxM_RR(CalcFuncD aFuncD, CalcFuncZ aFuncZ, const Aurora::Matrix &aMatrix,
                                 Aurora::Matrix &&aOther) {
        if (!aMatrix.compareShape(aOther))return Matrix();
        std::cout << "use right ref operation m" << std::endl;
        if (aMatrix.getValueType() != aOther.getValueType()) {
            //aOther is not a complex matrix
            if (aMatrix.getValueType() == Complex) {
                double *output = malloc(aMatrix.getDataSize(), true);
                aFuncD(aMatrix.getDataSize(), aMatrix.getData(), 1, aOther.getData(), 1,
                       output, 1);
                aFuncD(aMatrix.getDataSize(), aMatrix.getData() + 1,1, aOther.getData(), 1,
                       output + 1,
                       1);
                return Matrix::New(output, aOther);
            }
            //aOther is a complex matrix, use aOther as output
            aFuncD(aMatrix.getDataSize(), aMatrix.getData(),1, aOther.getData(), 1,
                   aOther.getData(),
                   1);
            aFuncD(aMatrix.getDataSize(), aMatrix.getData(), 1, aOther.getData() + 1, 1,
                   aOther.getData() + 1, 1);
            return aOther;
        } else if (aMatrix.getValueType() == Normal) {
            aFuncD(aMatrix.getDataSize(), aMatrix.getData(), 1, aOther.getData(), 1,
                   aOther.getData(),
                   1);
            return aOther;
        } else {
            aFuncZ(aMatrix.getDataSize(), (std::complex<double> *) aMatrix.getData(), 1,
                   (std::complex<double> *) aOther.getData(), 1, (std::complex<double> *) aOther.getData(), 1);
            return aOther;
        }
    }
};


namespace Aurora {
    Matrix::Matrix(std::shared_ptr<double> aData, std::vector<int> aInfo)
            : mData(aData), mInfo(aInfo) {
    }
    bool Matrix::isNull() const {
        return !mData || mInfo.empty();
    }

    int Matrix::getDims() const {
        return mInfo.size();
    }

    double *Matrix::getData() const {
        return mData.get();
    }

    int Matrix::getDimSize(int aIndex) const {
        if (aIndex >= 0 && aIndex < 3 && aIndex < getDims()) {
            return mInfo.at(aIndex);
        }
        return 0;
    }

    size_t Matrix::getDataSize() const {
        if (!mData.get())return 0;
        size_t ret = 1;
        for (auto v: mInfo) {
            ret *= v;
        }
        return ret;
    }


    bool Matrix::compareShape(const Matrix &other) const {
        if (mInfo.size() != other.mInfo.size()) return false;
        for (int i = 0; i < mInfo.size(); ++i) {
            if (mInfo[i] != other.mInfo[i]) return false;
        }
        return true;
    }

    Matrix Matrix::getDataFromDims2(int aColumn) {
        if (2 != getDims() || aColumn > mInfo.back()) {
            return Matrix();
        }

        int rows = mInfo.at(0);
        std::shared_ptr<double> resultData = std::shared_ptr<double>(new double[rows], std::default_delete<double[]>());
        std::copy(mData.get() + (aColumn - 1) * rows, mData.get() + aColumn * rows, resultData.get());
        std::vector<int> resultInfo = {rows};
        Matrix result(resultData, resultInfo);
        return result;
    }

    Matrix Matrix::getDataFromDims1(int aRow) {
        if (1 != getDims() || aRow > mInfo.back()) {
            return Matrix();
        }
        std::shared_ptr<double> resultData = std::shared_ptr<double>(new double[1], std::default_delete<double[]>());
        resultData.get()[0] = mData.get()[aRow - 1];
        std::vector<int> resultInfo{1};
        Matrix result(resultData, resultInfo);
        return result;
    }

    Matrix Matrix::New(double *data, int rows, int cols, int slices, ValueType type) {
        if (!data) return Matrix();
        std::vector<int> vector;
        vector.push_back(rows);
        if (cols > 0)vector.push_back(cols);
        if (slices > 0)vector.push_back(slices);
        Matrix ret({data, std::default_delete<double[]>()}, vector);
        if (type != Normal)ret.setValueType(type);
        return ret;
    }

    Matrix Matrix::New(double *data, const Matrix &shapeMatrix) {
        return New(data,
                   shapeMatrix.getDimSize(0),
                   shapeMatrix.getDimSize(1),
                   shapeMatrix.getDimSize(2),
                   shapeMatrix.getValueType());
    }


    Matrix Matrix::New(const Matrix &shapeMatrix) {
        double *newBuffer = malloc(shapeMatrix.getDataSize(), shapeMatrix.getValueType());
        return New(newBuffer, shapeMatrix);
    }

    Matrix Matrix::deepCopy() const {
        double *newBuffer = malloc(getDataSize(), getValueType());
        memcpy(newBuffer, getData(), sizeof(double) * getDataSize() * getValueType());
        return New(newBuffer,
                   getDimSize(0),
                   getDimSize(1),
                   getDimSize(2),
                   getValueType());
    }

    //operation +
    Matrix Matrix::operator+(double aScalar) const { return operatorMxA(&vdAddI, aScalar, *this);}
    Matrix operator+(double aScalar, const Matrix &matrix) {return matrix + aScalar;}
    Matrix Matrix::operator+(const Matrix &matrix) const {return operatorMxM(vdAddI, vzAddI, *this, matrix);}
    Matrix &operator+(double aScalar, Matrix &&matrix) {
        return operatorMxA_RR(&vdAddI,aScalar, std::forward<Matrix&&>(matrix));
    }
    Matrix &operator+(Matrix &&matrix,double aScalar) {
        return operatorMxA_RR(&vdAddI,aScalar, std::forward<Matrix&&>(matrix));
    }
    Matrix Matrix::operator+(Matrix &&aMatrix) const {
        return operatorMxM_RR(&vdAddI,&vzAddI,*this,std::forward<Matrix&&>(aMatrix));
    }
    Matrix operator+(Matrix &&aMatrix, const Matrix &aOther) {
        return operatorMxM_RR(&vdAddI,&vzAddI,aOther,std::forward<Matrix&&>(aMatrix));
    }

    //operation -
    Matrix Matrix::operator-(double aScalar) const { return operatorMxA(&vdSubI, aScalar, *this);}
    Matrix operator-(double aScalar, const Matrix &matrix) {return matrix - aScalar;}
    Matrix Matrix::operator-(const Matrix &matrix) const {return operatorMxM(vdSubI, vzSubI, *this, matrix);}
    Matrix &operator-(double aScalar, Matrix &&matrix) {
        return operatorMxA_RR(&vdSubI,aScalar, std::forward<Matrix&&>(matrix));
    }
    Matrix &operator-(Matrix &&matrix,double aScalar) {
        return operatorMxA_RR(&vdSubI,aScalar, std::forward<Matrix&&>(matrix));
    }
    Matrix Matrix::operator-(Matrix &&aMatrix) const {
        return operatorMxM_RR(&vdSubI,&vzSubI,*this,std::forward<Matrix&&>(aMatrix));
    }
    Matrix operator-(Matrix &&aMatrix, const Matrix &aOther) {
        return operatorMxM_RR(&vdSubI,&vzSubI,aOther,std::forward<Matrix&&>(aMatrix));
    }

    //operation *
    Matrix Matrix::operator*(double aScalar) const { return operatorMxA(&vdMulI, aScalar, *this);}
    Matrix operator*(double aScalar, const Matrix &matrix) {return matrix * aScalar;}
    Matrix Matrix::operator*(const Matrix &matrix) const {return operatorMxM(vdMulI, vzMulI, *this, matrix);}
    Matrix &operator*(double aScalar, Matrix &&matrix) {
        return operatorMxA_RR(&vdMulI,aScalar, std::forward<Matrix&&>(matrix));
    }
    Matrix &operator*(Matrix &&matrix,double aScalar) {
        return operatorMxA_RR(&vdMulI,aScalar, std::forward<Matrix&&>(matrix));
    }
    Matrix Matrix::operator*(Matrix &&aMatrix) const {
        return operatorMxM_RR(&vdMulI,&vzMulI,*this,std::forward<Matrix&&>(aMatrix));
    }
    Matrix operator*(Matrix &&aMatrix, const Matrix &aOther) {
        return operatorMxM_RR(&vdMulI,&vzMulI,aOther,std::forward<Matrix&&>(aMatrix));
    }

    //operation /
    Matrix Matrix::operator/(double aScalar) const { return operatorMxA(&vdDivI, aScalar, *this);}
    Matrix operator/(double aScalar, const Matrix &matrix) {return matrix / aScalar;}
    Matrix Matrix::operator/(const Matrix &matrix) const {return operatorMxM(vdDivI, vzDivI, *this, matrix);}
    Matrix &operator/(double aScalar, Matrix &&matrix) {
        return operatorMxA_RR(&vdDivI,aScalar, std::forward<Matrix&&>(matrix));
    }
    Matrix &operator/(Matrix &&matrix,double aScalar) {
        return operatorMxA_RR(&vdDivI,aScalar, std::forward<Matrix&&>(matrix));
    }
    Matrix Matrix::operator/(Matrix &&aMatrix) const {
        return operatorMxM_RR(&vdDivI,&vzDivI,*this,std::forward<Matrix&&>(aMatrix));
    }
    Matrix operator/(Matrix &&aMatrix, const Matrix &aOther) {
        return operatorMxM_RR(&vdDivI,&vzDivI,aOther,std::forward<Matrix&&>(aMatrix));
    }

    //operator ^ (pow)
    Matrix Matrix::operator^(int times) const { return operatorMxA(&vdPowI, times, *this);}
    Matrix operator^( Matrix &&matrix,int times) {
        return operatorMxA(&vdPowI, times, std::forward<Matrix&&>(matrix));
    }
    



    void Matrix::printf() {
        ::printf("[");
        for (int i = 0; i < mInfo[0]; ++i) {
            ::printf("[");
            for (int j = 0; j < mInfo[1]; ++j) {
                ::printf("%f2, ",getData()[getDimSize(0)*j+i]);
            }
            ::printf("]\r\n");
        }
        ::printf("]\r\n");
    }

    Matrix::MatrixSlice Matrix::operator()(int aRowIdx, int aColIdx, int s) const {

        if (aRowIdx == ALL_DIM) {
            return Matrix::MatrixSlice((int) (aColIdx > 0 ? getDimSize(0) : getDataSize()), 1,
                                       getData() + getDimSize(0) * (aColIdx > 0 ? aColIdx : 0));
        }
        else if (aColIdx == ALL_DIM){
            return Matrix::MatrixSlice((int) (aRowIdx > 0 ? getDimSize(1) : getDataSize()), getDimSize(0),
                                       getData() +(aRowIdx > 0 ? aRowIdx : 0));
        }
        return Matrix::MatrixSlice(1, 1, getData()+ getDimSize(0) * aColIdx +aRowIdx );
    }

    Matrix::MatrixSlice::MatrixSlice(int aSize,int aStride, double* aData, ValueType aType):
    mData(aData),
    mSize(aSize),
    mStride(aStride),
    mType(aType)
    {

    }

    Matrix::MatrixSlice &Matrix::MatrixSlice::operator=(const Matrix::MatrixSlice &slice) {
        if (this==&slice) return *this;
        if (mSize == slice.mSize && mType == slice.mType){
            if (mType== Normal)cblas_dcopy(mSize,slice.mData,slice.mStride,mData,mStride);
            else cblas_zcopy(mSize,(std::complex<double>*)slice.mData,slice.mStride,(std::complex<double>*)mData,mStride);
        }
        return *this;
    }

    Matrix::MatrixSlice &Matrix::MatrixSlice::operator=(const Matrix &matrix) {
        if (mSize == matrix.getDataSize() && mType == matrix.getValueType()){
            if (mType== Normal)cblas_dcopy(mSize,matrix.getData(),1,mData,mStride);
            else cblas_zcopy(mSize,(std::complex<double>*)matrix.getDataSize(),1,(std::complex<double>*)mData,mStride);
        }
        return *this;
    }

    Matrix Matrix::MatrixSlice::toMatrix() {
        auto data = malloc(mSize ,mType == Complex);
        if (mType== Normal)cblas_dcopy(mSize,mData,mStride,data,1);
        else cblas_zcopy(mSize,(std::complex<double>*)mData,mStride,(std::complex<double>*)data,1);
        return Matrix::New(data,mSize,0,0,mType);
    }
}