#include "HierarchicalAnalysis.h"
#include <QtMath>
#include <QDebug>

HierarchicalAnalysis::HierarchicalAnalysis(int columnCount, const QVector<qreal> &nxnValus)
    : m_columnCount(columnCount),
      m_sqartnValues(QVector<double>(m_columnCount, 0)),
      m_weights(QVector<double>(m_columnCount, 0)),
      m_averageWeights(QVector<double>(m_columnCount, 0)),
      m_CI(0),
      m_CR(0)
{
    // qDebug() << "HierarchicalAnalysis nodes" << nodes;
    calc(nxnValus);
}

void HierarchicalAnalysis::calc(const QVector<qreal> &nxnValus)
{
    // qDebug() << "HierarchicalAnalysis nxnValus" << nxnValus;

    QVector<qreal> nodeMul(m_columnCount, 1);
    for (int m = 0; m < m_columnCount; ++m) {
        for (int n = 0; n < m_columnCount; ++n) {
            nodeMul[m] *= nxnValus[m * m_columnCount + n];
        }
    }
    //    qDebug() << "nodeMul" << nodeMul;

    qreal nSum = 0;
    for (int n = 0; n < m_sqartnValues.count(); ++n) {
        m_sqartnValues[n] = qPow(nodeMul[n], (qreal)1 / m_sqartnValues.count());
        nSum += m_sqartnValues[n];
    }

    // qDebug() << "sqartnValues" << m_sqartnValues;

    for (int w = 0; w < m_weights.count(); ++w) {
        m_weights[w] = m_sqartnValues[w] / nSum;
    }

    // qDebug() << "weights" << m_weights;

    // m0*w0+m1*w1+m2*w2+m3*w3...mn*wn
    for (int m = 0; m < m_columnCount; ++m) {
        for (int n = 0; n < m_columnCount; ++n) {
            m_averageWeights[m] += nxnValus[m * m_columnCount + n] * m_weights[n];
        }
    }

    //    qDebug() << "averageWeights" << m_averageWeights;

    // Awi/Wi
    QVector<qreal> awiDividedWi(m_columnCount, 0);
    qreal awiDividedWiAverage = 0;
    for (int m = 0; m < m_columnCount; ++m) {
        awiDividedWi[m] = m_averageWeights[m] / m_weights[m];
        awiDividedWiAverage += awiDividedWi[m];
    }
    awiDividedWiAverage /= m_columnCount;

    //    qDebug() << "awiDividedWi" << awiDividedWi;

    // CI=(λ-n)/(n-1)
    m_CI         = (awiDividedWiAverage - m_columnCount) / (m_columnCount - 1);
    qreal result = m_columnCount <= 10 ? RI[m_columnCount - 1] : RI[9];
    if (qFuzzyCompare(result, 0)) {
        m_CR = 0;
    } else {
        m_CR = m_CI / result;
    }

    //    qDebug() << RI[m_columnCount - 1] << "m_CI" << m_CI << "m_CR" << m_CR;
}