/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2001-2002 Vivid Solutions Inc.
 * Copyright (C) 2005 Refractions Research Inc.
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Public Licence as published
 * by the Free Software Foundation.
 * See the COPYING file for more information.
 *
 **********************************************************************
 *
 * Last port: geom/IntersectionMatrix.java rev. 1.18
 *
 **********************************************************************/

#include <geos/geom/IntersectionMatrix.h>
#include <geos/geom/Dimension.h>
#include <geos/geom/Location.h>
#include <geos/util/IllegalArgumentException.h>

#include <sstream>
#include <cassert>

using namespace std;

namespace geos {
namespace geom { // geos::geom

const int IntersectionMatrix::firstDim = 3;
const int IntersectionMatrix::secondDim = 3;

/*public*/
IntersectionMatrix::IntersectionMatrix()
{
    //matrix = new int[3][3];
    setAll(Dimension::False);
}

/*public*/
IntersectionMatrix::IntersectionMatrix(const string& elements)
{
    setAll(Dimension::False);
    set(elements);
}

/*public*/
IntersectionMatrix::IntersectionMatrix(const IntersectionMatrix& other)
{
    matrix = other.matrix;
}

/*public*/
void
IntersectionMatrix::add(IntersectionMatrix* other)
{
    for(size_t i = 0; i < firstDim; i++) {
        for(size_t j = 0; j < secondDim; j++) {
            setAtLeast(static_cast<Location>(i), static_cast<Location>(j),
                    other->get(static_cast<Location>(i), static_cast<Location>(j)));
        }

    }
}

/*public*/
bool
IntersectionMatrix::matches(const string& requiredDimensionSymbols) const
{
    if(requiredDimensionSymbols.length() != 9) {
        ostringstream s;
        s << "IllegalArgumentException: Should be length 9, is "
          << "[" << requiredDimensionSymbols << "] instead" << endl;
        throw util::IllegalArgumentException(s.str());
    }
    for(size_t ai = 0; ai < firstDim; ai++) {
        for(size_t bi = 0; bi < secondDim; bi++) {
            if(!matches(matrix[ai][bi], requiredDimensionSymbols[3 * ai + bi])) {
                return false;
            }
        }
    }
    return true;
}

/*public static*/
bool
IntersectionMatrix::matches(int actualDimensionValue,
                            char requiredDimensionSymbol)
{

    if(requiredDimensionSymbol == '*') {
        return true;
    }

    if(requiredDimensionSymbol == 'T' && (actualDimensionValue >= 0 ||
                                          actualDimensionValue == Dimension::True)) {
        return true;
    }

    if(requiredDimensionSymbol == 'F' &&
            actualDimensionValue == Dimension::False) {
        return true;
    }

    if(requiredDimensionSymbol == '0' &&
            actualDimensionValue == Dimension::P) {
        return true;
    }

    if(requiredDimensionSymbol == '1' &&
            actualDimensionValue == Dimension::L) {
        return true;
    }

    if(requiredDimensionSymbol == '2' &&
            actualDimensionValue == Dimension::A) {
        return true;
    }

    return false;
}

/*public static*/
bool
IntersectionMatrix::matches(const string& actualDimensionSymbols,
                            const string& requiredDimensionSymbols)
{
    IntersectionMatrix m(actualDimensionSymbols);
    bool result = m.matches(requiredDimensionSymbols);

    return result;
}

/*public*/
void
IntersectionMatrix::set(Location row, Location col, int dimensionValue)
{
    matrix[static_cast<size_t>(row)][static_cast<size_t>(col)] = dimensionValue;
}

/*public*/
void
IntersectionMatrix::set(const string& dimensionSymbols)
{
    auto limit = dimensionSymbols.length();

    for(size_t i = 0; i < limit; i++) {
        auto row = i / firstDim;
        auto col = i % secondDim;
        matrix[row][col] = Dimension::toDimensionValue(dimensionSymbols[i]);
    }
}

/*public*/
void
IntersectionMatrix::setAtLeast(Location row, Location col, int minimumDimensionValue)
{
    if(get(row, col) < minimumDimensionValue) {
        set(row, col, minimumDimensionValue);
    }
}

/*public*/
void
IntersectionMatrix::setAtLeastIfValid(Location row, Location col, int minimumDimensionValue)
{
    if(row != Location::UNDEF && col != Location::UNDEF) {
        setAtLeast(row, col, minimumDimensionValue);
    }
}

/*public*/
void
IntersectionMatrix::setAtLeast(string minimumDimensionSymbols)
{
    auto limit = minimumDimensionSymbols.length();

    for(size_t i = 0; i < limit; i++) {
        auto row = static_cast<Location>(i / firstDim);
        auto col = static_cast<Location>(i % secondDim);
        setAtLeast(row, col, Dimension::toDimensionValue(minimumDimensionSymbols[i]));
    }
}

/*public*/
void
IntersectionMatrix::setAll(int dimensionValue)
{
    for(int ai = 0; ai < firstDim; ai++) {
        for(int bi = 0; bi < secondDim; bi++) {
            set(static_cast<Location>(ai), static_cast<Location>(bi), dimensionValue);
        }
    }
}

/*public*/
bool
IntersectionMatrix::isDisjoint() const
{
    return
        get(Location::INTERIOR, Location::INTERIOR) == Dimension::False
        &&
        get(Location::INTERIOR, Location::BOUNDARY) == Dimension::False
        &&
        get(Location::BOUNDARY, Location::INTERIOR) == Dimension::False
        &&
        get(Location::BOUNDARY, Location::BOUNDARY) == Dimension::False;
}

/*public*/
bool
IntersectionMatrix::isIntersects() const
{
    return !isDisjoint();
}

/*public*/
bool
IntersectionMatrix::isTouches(int dimensionOfGeometryA,
                              int dimensionOfGeometryB) const
{
    if(dimensionOfGeometryA > dimensionOfGeometryB) {
        //no need to get transpose because pattern matrix is symmetrical
        return isTouches(dimensionOfGeometryB, dimensionOfGeometryA);
    }
    if((dimensionOfGeometryA == Dimension::A && dimensionOfGeometryB == Dimension::A)
            ||
            (dimensionOfGeometryA == Dimension::L && dimensionOfGeometryB == Dimension::L)
            ||
            (dimensionOfGeometryA == Dimension::L && dimensionOfGeometryB == Dimension::A)
            ||
            (dimensionOfGeometryA == Dimension::P && dimensionOfGeometryB == Dimension::A)
            ||
            (dimensionOfGeometryA == Dimension::P && dimensionOfGeometryB == Dimension::L)) {
        return get(Location::INTERIOR, Location::INTERIOR) == Dimension::False &&
               (matches(get(Location::INTERIOR, Location::BOUNDARY), 'T') ||
                matches(get(Location::BOUNDARY, Location::INTERIOR), 'T') ||
                matches(get(Location::BOUNDARY, Location::BOUNDARY), 'T'));
    }
    return false;
}

/*public*/
bool
IntersectionMatrix::isCrosses(int dimensionOfGeometryA,
                              int dimensionOfGeometryB) const
{
    if((dimensionOfGeometryA == Dimension::P && dimensionOfGeometryB == Dimension::L) ||
            (dimensionOfGeometryA == Dimension::P && dimensionOfGeometryB == Dimension::A) ||
            (dimensionOfGeometryA == Dimension::L && dimensionOfGeometryB == Dimension::A)) {
        return matches(get(Location::INTERIOR, Location::INTERIOR), 'T') &&
               matches(get(Location::INTERIOR, Location::EXTERIOR), 'T');
    }
    if((dimensionOfGeometryA == Dimension::L && dimensionOfGeometryB == Dimension::P) ||
            (dimensionOfGeometryA == Dimension::A && dimensionOfGeometryB == Dimension::P) ||
            (dimensionOfGeometryA == Dimension::A && dimensionOfGeometryB == Dimension::L)) {
        return matches(get(Location::INTERIOR, Location::INTERIOR), 'T') &&
               matches(get(Location::EXTERIOR, Location::INTERIOR), 'T');
    }
    if(dimensionOfGeometryA == Dimension::L && dimensionOfGeometryB == Dimension::L) {
        return get(Location::INTERIOR, Location::INTERIOR) == 0;
    }
    return false;
}

/*public*/
bool
IntersectionMatrix::isWithin() const
{
    return matches(get(Location::INTERIOR, Location::INTERIOR), 'T') &&
           get(Location::INTERIOR, Location::EXTERIOR) == Dimension::False &&
           get(Location::BOUNDARY, Location::EXTERIOR) == Dimension::False;
}

/*public*/
bool
IntersectionMatrix::isContains() const
{
    return matches(get(Location::INTERIOR, Location::INTERIOR), 'T') &&
           get(Location::EXTERIOR, Location::INTERIOR) == Dimension::False &&
           get(Location::EXTERIOR, Location::BOUNDARY) == Dimension::False;
}

/*public*/
bool
IntersectionMatrix::isEquals(int dimensionOfGeometryA,
                             int dimensionOfGeometryB) const
{
    if(dimensionOfGeometryA != dimensionOfGeometryB) {
        return false;
    }
    return matches(get(Location::INTERIOR, Location::INTERIOR), 'T') &&
           get(Location::EXTERIOR, Location::INTERIOR) == Dimension::False &&
           get(Location::INTERIOR, Location::EXTERIOR) == Dimension::False &&
           get(Location::EXTERIOR, Location::BOUNDARY) == Dimension::False &&
           get(Location::BOUNDARY, Location::EXTERIOR) == Dimension::False;
}

/*public*/
bool
IntersectionMatrix::isOverlaps(int dimensionOfGeometryA,
                               int dimensionOfGeometryB) const
{
    if((dimensionOfGeometryA == Dimension::P && dimensionOfGeometryB == Dimension::P) ||
            (dimensionOfGeometryA == Dimension::A && dimensionOfGeometryB == Dimension::A)) {
        return matches(get(Location::INTERIOR, Location::INTERIOR), 'T') &&
               matches(get(Location::INTERIOR, Location::EXTERIOR), 'T') &&
               matches(get(Location::EXTERIOR, Location::INTERIOR), 'T');
    }
    if(dimensionOfGeometryA == Dimension::L && dimensionOfGeometryB == Dimension::L) {
        return get(Location::INTERIOR, Location::INTERIOR) == 1 &&
               matches(get(Location::INTERIOR, Location::EXTERIOR), 'T') &&
               matches(get(Location::EXTERIOR, Location::INTERIOR), 'T');
    }
    return false;
}

/*public*/
bool
IntersectionMatrix::isCovers() const
{
    bool hasPointInCommon =
        matches(get(Location::INTERIOR, Location::INTERIOR), 'T')
        ||
        matches(get(Location::INTERIOR, Location::BOUNDARY), 'T')
        ||
        matches(get(Location::BOUNDARY, Location::INTERIOR), 'T')
        ||
        matches(get(Location::BOUNDARY, Location::BOUNDARY), 'T');

    return hasPointInCommon
           &&
           get(Location::EXTERIOR, Location::INTERIOR) ==
           Dimension::False
           &&
           get(Location::EXTERIOR, Location::BOUNDARY) ==
           Dimension::False;
}

/*public*/
bool
IntersectionMatrix::isCoveredBy() const
{
    bool hasPointInCommon =
        matches(get(Location::INTERIOR, Location::INTERIOR), 'T')
        ||
        matches(get(Location::INTERIOR, Location::BOUNDARY), 'T')
        ||
        matches(get(Location::BOUNDARY, Location::INTERIOR), 'T')
        ||
        matches(get(Location::BOUNDARY, Location::BOUNDARY), 'T');

    return
        hasPointInCommon
        &&
        get(Location::INTERIOR, Location::EXTERIOR) ==
        Dimension::False
        &&
        get(Location::BOUNDARY, Location::EXTERIOR) ==
        Dimension::False;
}

//Not sure
IntersectionMatrix*
IntersectionMatrix::transpose()
{
    int temp = matrix[1][0];
    matrix[1][0] = matrix[0][1];
    matrix[0][1] = temp;
    temp = matrix[2][0];
    matrix[2][0] = matrix[0][2];
    matrix[0][2] = temp;
    temp = matrix[2][1];
    matrix[2][1] = matrix[1][2];
    matrix[1][2] = temp;
    return this;
}

/*public*/
string
IntersectionMatrix::toString() const
{
    string result("");
    for(size_t ai = 0; ai < firstDim; ai++) {
        for(size_t bi = 0; bi < secondDim; bi++) {
            result += Dimension::toDimensionSymbol(matrix[ai][bi]);
        }
    }
    return result;
}

std::ostream&
operator<< (std::ostream& os, const IntersectionMatrix& im)
{
    return os << im.toString();
}

} // namespace geos::geom
} // namespace geos