tippspiel/pfosten/app/leagues/Match.php

<?php

namespace App\Leagues;

use Illuminate\Database\Eloquent\Model;
use App\Leagues\League;
use App\Leagues\LeagueMember;

use App\User;
use App\Round;
use App\Season;
use App\Tipp;

use Log;
use DB;

class Match extends Model
{
    protected $table ='leagues_matches';
    protected $fillable = [
        'id','league_id','round_id','user1_id','user2_id'
    ];

    // https://en.wikipedia.org/wiki/Round-robin_tournament
    public static function createMatchups()
    {   Log::info("Match::Creating matchups()");
        $currentSeason = Season::getCurrent();
        $leagues = League::where('season_id', '=', $currentSeason->id)->get();
        foreach ($leagues as $league) {
            if ($league->rank == League::RANK_QUALIFICATION) {
                $rounds = Round::where('id','>=',$league->start_round_id)->get();
                $roundNr=1;
                $neededRoundCount = Match::getNumberOfNeededRounds($league->id);
                foreach ($rounds as $round) {
                    $pairings = Match::getPairings($league->id, $roundNr);
                    // Save pairings
                    foreach($pairings as $pair) {
                        Log::info("Saving match. ".$pair[0]." vs ".$pair[1]." roundid=".$round->id);
                        $newMatch = Match::create([
                            'league_id' => $league->id,
                            'round_id' => $round->id,
                            'user1_id' => $pair[0],
                            'user2_id' => $pair[1]
                        ]);
                        $newMatch->save();
                    }
                    $roundNr += 1;
                    if ($roundNr > $neededRoundCount) break;
                }

            }
        }
    }

    public static function hasMatched($user1_id, $user2_id, $league_id)
    {
        $matches = DB::table('leagues_matches')
            ->where('league_id', '=', $league_id)
            ->where('user1_id', '=', $user1_id)
            ->where('user2_id', '=', $user2_id)
            ->get();
        if (sizeof($matches)) {
            return true;
        }

        $matches = DB::table('leagues_matches')
            ->where('league_id', '=', $league_id)
            ->where('user1_id', '=', $user2_id)
            ->where('user2_id', '=', $user1_id)
            ->get();
        if (sizeof($matches)) {
            return true;
        }

        return false;
    }


    // Selektiert nur die "Heimspiele"
    public static function getMatches($user_id, $league_id) {
        $matches = DB::table('leagues_matches')->where('league_id', '=', $league_id)->where('user1_id','=',$user_id)->get();
        return $matches;
    }


    public static function getLeagueMatches($league_id) {
        //$matches = Match::where('league_id','=',$league_id)->orderBy('round_id')->get();
        $matches = DB::table('leagues_matches')->where('league_id','=',$league_id)->orderBy('round_id')->get();
        $season = Season::getCurrent();

        $roundnames = Round::getNames();
        $usernames  = User::getNames();
        foreach($matches as $match) {
            $match->round_name = $roundnames[$match->round_id];
            $match->user1_name = $usernames[$match->user1_id];
            $match->user2_name = $usernames[$match->user2_id];
            // Punktauswertung in Match::getResults($leagueId, $maxRoundId);
        }
        return $matches;
    }


    public static function getPairings($leagueId, $roundNr) {
        $members = LeagueMember::getMembers($leagueId);
        shuffle($members);
        Log::info("Number of members:".sizeof($members));
        $pairingCount = Match::getNumberOfPairingsPerRound($leagueId);

        $roundRobin=array();
        foreach($members as $userId) {
            array_push($roundRobin, $userId);
        }

        while ($roundNr>1) {
            // Round-Robin shift: First element stays, rest rotates
            $first = array_shift($roundRobin); // Erstes Element sichern & entfernen
            $last = array_pop($roundRobin);   // Letztes Element sichern & entfernen
            array_unshift($roundRobin, $last);   // Vorne einfügen
            array_unshift($roundRobin, $first); // Vorne einfügen
            $roundNr--;
        }

        error_log("Members: ".sizeof($roundRobin));
        foreach ($roundRobin as $index => $userId) {
            error_log($index." => ".$userId);
        }

        $idx=0;
        $slot=0;
        $pairings=array();
        foreach ($roundRobin as  $index => $userId) {
            $idx=$index;
            if ($index >= $pairingCount){ $idx -= $pairingCount; $slot=1;}
            $pairings[$idx][$slot]=$userId;
            error_log("pairings[".$idx."][".$slot."]=".$userId);
        }

        return $pairings; // Array, der User1/User2 Tupel enthält
    }

    public static function getNumberOfPairingsPerRound($leagueId) {
        $members = LeagueMember::getMembers($leagueId);
        $pairingsPerRound = intdiv(sizeof($members),2);
        if (sizeof($members)-$pairingsPerRound*2) {
            $pairingsPerRound+=1;
        }
        return $pairingsPerRound;
    }

    public static function getNumberOfNeededRounds($leagueId) {
        $members = LeagueMember::getMembers($leagueId);
        return sizeof($members)-1;
    }

    public static function getMatchResults($leagueId, $maxRoundId=-1) {
        $roundtipps = Tipp::getRoundTipps($maxRoundId);
        $roundtipps = $roundtipps["roundtipps"];
        $startRoundId = League::getStartRoundId($leagueId);
        $matches = Match::getLeagueMatches($leagueId, $maxRoundId);

        if ($maxRoundId==-1) {$maxRoundId=Round::getLastLockedRoundId();}

        $matchResults=array();
        $members = LeagueMember::getMembers($leagueId);

        foreach($matches as $key => $match) {
            if (!Round::isCompleted($match->round_id)) continue;

            $user1_key = $match->round_id."_".$match->user1_id;
            $user2_key = $match->round_id."_".$match->user2_id;

            $user1_score = $roundtipps[$user1_key]["rankscore"];
            $user2_score = $roundtipps[$user2_key]["rankscore"];

            $matches[$key]->user1_rankscore = $user1_score;
            $matches[$key]->user2_rankscore = $user2_score;

            if ($user1_score > $user2_score) {
                $matches[$key]->user1_league_score = 3;
                $matches[$key]->user2_league_score = 0;
            }
            else if ($user1_score < $user2_score){
                $matches[$key]->user1_league_score = 0;
                $matches[$key]->user2_league_score = 3;
            } else {
                $matches[$key]->user1_league_score = 1;
                $matches[$key]->user2_league_score = 1;
            }

//            error_log($match->user1_id." vs ".$match->user2_id. " =>" . $user1_score.":".$user2_score);
        }
        return $matches;
    }
}