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[DataStorePath("sync.coin_players")]
[Syncable]
[Register("coin_player")]
public class CoinPlayerSO : ServerObject
{
    public const int FLIP_SECONDS = 1;
    public override SOID ID { get; set; }
    public enum CoinState
    {
        HEADS,
        TAILS,
        FLIPPING
    }
    public CoinState state;
    public int currentStreak = 0;
    public int longestStreak = 0;
    public string username = "Anonymous";
    public Tuple<string,int>[] leaderboard;
    public class SetUsername : ServerObjectMessage
    {
        public string username;
    }
    [FromClient] // <- [FromClient] allows a user to send this type of message
    void Handler(SetUsername message)
    {
        username = message.username;
        Send(
            Registry.GetId<CoinLeaderboardSO>("0"),
            new CoinLeaderboardSO.SendScore {
                score = longestStreak,
                username = username }
            );
    }
    public class Flip : ServerObjectMessage {}
    [FromClient] // <- [FromClient] allows a user to send this type of message
    void Handler(Flip message)
    {
        if (state != CoinState.FLIPPING)
        {
            state = CoinState.FLIPPING;
            Random rand = new Random();
            var isHeads = rand.Next(2) == 0;
            Send(ID, new FlipResult { isHeads = isHeads }, FLIP_SECONDS);
        }
    }
    public class GetTopScores : ServerObjectMessage { }
    [FromClient] // <- [FromClient] allows a user to send this type of message
    void Handler(GetTopScores message)
    {
        Send(
            Registry.GetId<CoinLeaderboardSO>("0"),
            new CoinLeaderboardSO.GetTopScores()
            );
    }
    public class FlipResult : ServerObjectMessage
    {
        public bool isHeads;
    }
    // This handler does not have [FromClient] so only the server can send it
    void Handler(FlipResult message)
    {
        if (message.isHeads)
        {
            currentStreak++;
            state = CoinState.HEADS;
        }
        else
        {
            currentStreak = 0;
            state = CoinState.TAILS;
        }
        if (currentStreak > longestStreak)
        {
            longestStreak = currentStreak;
            Send(
                Registry.GetId<CoinLeaderboardSO>("0"),
                new CoinLeaderboardSO.SendScore {
                    score = longestStreak,
                    username = username }
                );
        }
    }
    // This handler does not have [FromClient] so only the server can send it
    void Handler(CoinLeaderboardSO.TopScores message)
    {
        leaderboard = message.scores;
    }
    public override string ToString()
    {
        string s = $"CoinPlayer: {username} currentStreak: {currentStreak} currentStreak: {longestStreak}";
        return s;
    }
}