Exams - Soccer Results

/* You are given a sequence of soccer results in format "homeTeam / awayTeam: homeGoals-awayGoals".
 Your task is to write a JavaScript function that prints at the console a JSON string that holds the teams,
 and for each team goals scored, goals conceded and a list of teams that had a match with this team in
 the same format like at the below examples. Print at the console a JSON string that holds the teams
 (in alphabetical order) and for each team goals scored, goals conceded and a list of teams that had
 a match with this team (in alphabetical order). Duplicated teams should be printed once only
 (all strings are case-sensitive). */

"use strict";

function sorterSoccerResults(args) {
    var soccerMap = {};
    var pattern = /([^/]+)\/([^:]+):([^-]+)-\s*(\d{1,2})/g;
    for (var i = 0; i < args.length; i += 1) {
        var matcher, homeTeam, awayTeam, homeGoals, awayGoals;
        while (matcher = pattern.exec(args[i])) {
            homeTeam = matcher[1].trim();
            awayTeam = matcher[2].trim();
            homeGoals = Number(matcher[3]);
            awayGoals = Number(matcher[4]);
        }

        addingInfoToObject(soccerMap, homeTeam, awayTeam, homeGoals, awayGoals);
        addingInfoToObject(soccerMap, awayTeam, homeTeam, awayGoals, homeGoals);
    }

    function addingInfoToObject(object, homeTeam, awayTeam, homeGoals, awayGoals) {
        if (!(object.hasOwnProperty(homeTeam))) {
            object[homeTeam] = { 'goalsScored': 0, 'goalsConceded': 0, 'matchesPlayedWith': [] };
        }

        object[homeTeam].goalsScored += homeGoals;
        object[homeTeam].goalsConceded += awayGoals;

        if (object[homeTeam].matchesPlayedWith.indexOf(awayTeam) < 0) {
            object[homeTeam].matchesPlayedWith.push(awayTeam);
        }
    }

    function sortInfoInObject(object) {
        var sortedHomeTeams = Object.keys(object).sort();
        var sortedObject = {};
        for (var i = 0; i < sortedHomeTeams.length; i += 1) {
            if (object.hasOwnProperty(sortedHomeTeams[i])) {
                object[sortedHomeTeams[i]].matchesPlayedWith.sort();
                sortedObject[sortedHomeTeams[i]] = object[sortedHomeTeams[i]];
            }
        }

        return sortedObject;
    }

    soccerMap = sortInfoInObject(soccerMap);
    console.log(JSON.stringify(soccerMap));
}

sorterSoccerResults([
    "Germany / Argentina: 1-0",
    "Brazil / Netherlands: 0-3",
    "Netherlands / Argentina: 0-0",
    "Brazil / Germany: 1-7",
    "Argentina / Belgium: 1-0",
    "Netherlands / Costa Rica: 0-0",
    "France / Germany: 0-1",
    "Brazil / Colombia: 2-1" ]);