<?php

/*
 * The MIT License
 *
 * Copyright 2019 Jeroen De Meerleer <schaak@jeroened.be>.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

namespace JeroenED\Libpairtwo;

use JeroenED\Libpairtwo\Models\Tournament;
use JeroenED\Libpairtwo\Models\Sws as MyModel;
use JeroenED\Libpairtwo\Enums\TournamentSystem;

/**
 * This class reads a SWS file
 *
 * @author Jeroen De Meerleer
 */
class Sws
{
    private const PT_DAYFACTOR = 32;
    private const PT_MONTHFACTOR = 16;
    private const PT_YEARFACTOR = 512;
    private const PT_SYSTEMYEAR = 1900;
    private const PT_PASTOFFSET = 117;


    /**
     * @param string $swsfile
     * @return MyModel
     */
    public static function ReadSws(string $swsfile)
    {
        $swshandle = fopen($swsfile, 'rb');
        $swscontents = fread($swshandle, filesize($swsfile));
        fclose($swshandle);

        $sws = new MyModel();
        $offset = 0;
        

        $length = 4;
        $sws->setRelease(self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        $sws->setTournament(new Tournament());

        // UserCountry
        $length = 4;
        $sws->setBinaryData("UserCountry", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // SavedOffset
        $length = 4;
        $sws->setBinaryData("SavedOffset", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // NewPlayer
        $length = 4;
        $sws->setBinaryData("NewPlayer", hexdec(self::ReadHexData(substr($swscontents, $offset, $length))));
        $offset += $length;

        // AmericanHandicap
        $length = 4;
        $sws->setBinaryData("AmericanHandicap", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // LowOrder
        $length = 4;
        $sws->setBinaryData("LowOrder", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // PairingMethod
        $length = 4;
        $sws->setBinaryData("PairingMethod", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // AmericanPresence
        $length = 4;
        $sws->setBinaryData("AmericanPresence", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // CheckSameClub
        $length = 4;
        $sws->setBinaryData("CheckSameClub", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // NoColorCheck
        $length = 4;
        $sws->setBinaryData("NoColorCheck", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // SeparateCategories
        $length = 4;
        $sws->setBinaryData("SeparateCategories", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // EloUsed
        $length = 4;
        $sws->setBinaryData("EloUsed", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // AlternateColors
        $length = 4;
        $sws->setBinaryData("AlternateColors", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // MaxMeetings
        $length = 4;
        $sws->setBinaryData("MaxMeetings", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // MaxDistance
        $length = 4;
        $sws->setBinaryData("MaxDistance", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // MinimizeKeizer
        $length = 4;
        $sws->setBinaryData("MinimizeKeizer", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // MinRoundsMeetings
        $length = 4;
        $sws->setBinaryData("MinRoundsMeetings", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // MaxRoundsAbsent
        $length = 4;
        $sws->setBinaryData("MaxRoundsAbsent", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // SpecialPoints
        $length = 4 * 6;
        $sws->setBinaryData("SpecialPoints", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // NewNamePos
        $length = 4;
        $sws->setBinaryData("NewNamePos", hexdec(self::ReadHexData(substr($swscontents, $offset, $length))));
        $offset += $length;

        // CurrentRound
        $length = 4;
        $sws->setBinaryData("CurrentRound", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // CreatedRounds
        $length = 4;
        $sws->setBinaryData("CreatedRounds", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // CreatedPlayers
        $length = 4;
        $sws->setBinaryData("CreatedPlayers", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // MaxSelection
        $length = 4;
        $sws->setBinaryData("MaxSelection", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // NumberOfRounds
        $length = 4;
        $sws->setBinaryData("NumberOfRounds", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // NumberOfPairings
        $length = 4;
        $sws->setBinaryData("NumberOfPairings", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // CreatedPairings
        $length = 4;
        $sws->setBinaryData("CreatedPairings", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // PairingElems
        $length = 4;
        $sws->setBinaryData("PairingElems", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // RandomSeed
        $length = 4;
        $sws->setBinaryData("RandomSeed", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // TieOrder
        $length = 4 * 5;
        $sws->setBinaryData("TieOrder", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // Categorie
        $length = 4 * 10;
        $sws->setBinaryData("Categorie", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // ExtraPoints
        $length = 4 * 20;
        $sws->setBinaryData("ExtraPoints", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // SelectP
        $length = 4 * 20;
        $sws->setBinaryData("SelectP", self::ReadHexData(substr($swscontents, $offset, $length)));
        $offset += $length;

        // Players
        $length = 68 * $sws->getBinaryData("NewPlayer");
        $sws->setBinaryData("Players", substr($swscontents, $offset, $length));
        $offset += $length;

        // PlayerNames
        $length = $sws->getBinaryData("NewNamePos");
        $sws->setBinaryData("PlayerNames", substr($swscontents, $offset, $length));
        $offset += $length;

        // TournamentName
        $length = 80;
        $sws->getTournament()->setName(substr($swscontents, $offset, $length));
        $offset += $length;

        // TournamentOrganiser
        $length = 50;
        $sws->getTournament()->setOrganiser(substr($swscontents, $offset, $length));
        $offset += $length;

        // TournamentTempo
        $length = 50;
        $sws->getTournament()->setTempo(substr($swscontents, $offset, $length));
        $offset += $length;

        // TournamentCountry
        $length = 32;
        $sws->getTournament()->setOrganiserCountry(substr($swscontents, $offset, $length));
        $offset += $length;

        // Arbiters
        $length = 128;
        $sws->getTournament()->setArbiter(substr($swscontents, $offset, $length));
        $offset += $length;

        // Rounds
        $length = 4;
        $sws->getTournament()->setRounds(hexdec(substr($swscontents, $offset, $length)));
        $offset += $length;

        // Participants
        $length = 4;
        $sws->getTournament()->setParticipants(hexdec(substr($swscontents, $offset, $length)));
        $offset += $length;

        // Fidehomol
        $length = 4;
        $sws->getTournament()->setFideHomol(hexdec(substr($swscontents, $offset, $length)));
        $offset += $length;

        // StartDate
        $length = 4;
        $sws->getTournament()->setStartDate(self::UIntToTimestamp(hexdec(self::readhexdata(substr($swscontents, $offset, $length)))));
        $offset += $length;

        // EndDate
        $length = 4;
        $sws->getTournament()->setEndDate(self::UIntToTimestamp(hexdec(self::readhexdata(substr($swscontents, $offset, $length)))));
        $offset += $length;

        // Place
        $length = 36;
        $sws->getTournament()->setOrganiserPlace(substr($swscontents, $offset, $length));
        $offset += $length;

        // First period
        $length = 32;
        $sws->getTournament()->setFirstPeriod(substr($swscontents, $offset, $length));
        $offset += $length;

        // Second period
        $length = 32;
        $sws->getTournament()->setSecondPeriod(substr($swscontents, $offset, $length));
        $offset += $length;

        // Unrated Elo
        $length = 4;
        $sws->getTournament()->setNonRatedElo(hexdec(self::readhexdata(substr($swscontents, $offset, $length))));
        $offset += $length;

        // Type
        $length = 4;
        $sws->getTournament()->setSystem(new TournamentSystem(hexdec(self::readhexdata(substr($swscontents, $offset, $length)))));
        $offset += $length;

        // Federation
        $length = 12;
        $sws->getTournament()->setFederation(substr($swscontents, $offset, $length));
        $offset += $length;

        // Soustype
        /*
         * 32 Bits:
         * 1 bit  = Libre?
         * 6 bits = First round sent to FIDE
         * 6 bits = First round sent to FRBE-KBSB
         * 6 bits = Last round sent to FIDE
         * 6 bits = Last round sent to FRBE-KBSB
         * 6 bits = Number of the First board
         * 1 bit  = Double round robin
         */
        $length = 4;
        $sws->setBinaryData('SousType', self::readhexdata(substr($swscontents, $offset, $length)));
        $offset += $length;

        // Organising club no
        $length = 4;
        $sws->getTournament()->setOrganiserClubNo(substr($swscontents, $offset, $length));
        echo dechex($offset);
        $offset += $length;

        // Organising club
        $length = 12;
        $sws->getTournament()->setOrganiserClub(substr($swscontents, $offset, $length));
        $offset += $length;


        return $sws;
    }

    private static function ReadHexData(String $data)
    {
        $hex = implode(unpack("H*", $data));
        $hex = array_reverse(str_split($hex, 2));

        foreach ($hex as $key=>$item) {
            if ($item == "00") {
                $hex[$key] = "";
            } else {
                break;
            }
        }

        $hex = implode($hex);
        return $hex;
    }

    private static function UIntToTimestamp($date)
    {
        $curyear = date('Y');
        $yearoffset = $curyear - self::PT_PASTOFFSET;

        // Day
        $day = $date % self::PT_DAYFACTOR;
        if ($day < 1) {
            $day = 1;
        }

        // Month
        $month = ($date / self::PT_DAYFACTOR) % self::PT_MONTHFACTOR;
        if ($month < 1) {
            $month = 1;
        }

        // Year
        $year = ($date / self::PT_YEARFACTOR) + $yearoffset;

        $concat = $month . '/' . $day . '/' . intval($year);
        $format = 'm/d/Y';


        return \DateTime::createFromFormat($format, $concat);
    }
}