#include "PrincipalVariation.hpp"

#include <ostream>
#include <vector>


PrincipalVariation::PrincipalVariation(const std::vector<Move> &v, bool isMate): mMoves(v), mIsMate(isMate) {

}

PrincipalVariation::PrincipalVariation(const std::vector<Move> &v, Board &board): mMoves(v) {
    for (const auto &kMove : v) {
        board.makeMove(kMove);
    }

    mIsMate = board.isCheckMate();
    if (mIsMate || v.empty()) {
        mScore = static_cast<int>(v.size());
    } else {
        mScore = board.evaluate();
    }
}


bool PrincipalVariation::isMate() const {
    return mIsMate;
}

int PrincipalVariation::score() const {
    return mScore;
}

std::size_t PrincipalVariation::length() const {
    return mMoves.size();
}

PrincipalVariation::MoveIter PrincipalVariation::begin() const {
    return mMoves.begin();
}

PrincipalVariation::MoveIter PrincipalVariation::end() const {
    return mMoves.end();
}
std::ostream &operator<<(std::ostream &os, const PrincipalVariation &pv) {
    os << "isMate=" << pv.isMate();
    os << " score=" << pv.score();
    os << " length=" << pv.length() << std::endl;
    os << "Moves:" << std::endl;
    for (const auto &item : pv) {
        os << item << std::endl;
    }
    return os;
}