1) Get a sorted list of players

var eventPlayers = Object.getOwnPropertyNames(event.players).filter((id) => !event.players[id].withdrawn).map((id) => {
    return {
        id: id,
        eventPlayer: event.players[id],
        ratedPlayer: ratedPlayers.find((p) => p.DiscordID === id) || {
            Name: obsDiscord.members.get(id).displayName,
            DiscordID: id,
            Rating: 1500,
            RatingDeviation: 200,
            Volatility: 0.06
        },
        points: event.matches.filter((m) => !m.cancelled && m.winner === id).length,
        matches: event.matches.filter((m) => !m.cancelled && m.players.indexOf(id) !== -1).length
    };
}).sort((a, b) => b.points - a.points || b.ratedPlayer.Rating - a.ratedPlayer.Rating || b.matches - a.matches || (Math.random() < 0.5 ? 1 : -1));

2) For each player, match them to a potential opponent

var remainingPlayers = eventPlayers.filter((p) => matches.filter((m) => m.indexOf(p.id) !== -1).length === 0),
    firstPlayer = remainingPlayers[0],
    potentialOpponents = remainingPlayers.filter(
        (p) =>
            p.id !== firstPlayer.id &&
            event.matches.filter((m) => !m.cancelled && m.players.indexOf(p.id) !== -1 && m.players.indexOf(firstPlayer.id) !== -1).length === 0 &&
            (firstPlayer.eventPlayer.canHost || p.eventPlayer.canHost)
    );

if (remainingPlayers.length === 1) {
    if (firstPlayer.matches >= event.round) {
        return true;
    } else {
        return false;
    }
}

let index = Math.floor(potentialOpponents.length / Math.pow(2, event.round + 1));

while (potentialOpponents.length > 0) {
    let index = Math.floor(potentialOpponents.length / Math.pow(2, event.round + 1));
    matches.push([firstPlayer.id, potentialOpponents[index].id]);
    if (remainingPlayers.length <= 2) {
        return true;
    }
    if (matchPlayers()) {
        return true;
    }

    matches.pop();
    potentialOpponents.splice(index, 1);
}
return false;

3) Determine who's home

match.sort((a, b) => (
    (event.matches.filter((m) => !m.cancelled && m.home === a).length - event.matches.filter((m) => !m.cancelled && m.home === b).length) ||
    (event.matches.filter((m) => !m.cancelled && m.players.indexOf(b) !== -1 && m.home !== b).length - event.matches.filter((m) => !m.cancelled && m.players.indexOf(a) !== -1 && m.home !== a).length) ||
    (Math.random() < 0.5 ? 1 : -1)
));
eventMatch.home = match[0];

Summary

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