using System;
using System.Text;
using Server.Mobiles;
using Server.Network;

namespace Server.Engines.ConPVP
{
  public class Participant
  {
    public Participant(DuelContext context, int count)
    {
      Context = context;
      //m_Stakes = new StakesContainer( context, this );
      Resize(count);
    }

    public int Count => Players.Length;
    public DuelPlayer[] Players{ get; private set; }

    public DuelContext Context{ get; }

    public TourneyParticipant TourneyPart{ get; set; }

    public int FilledSlots
    {
      get
      {
        int count = 0;

        for (int i = 0; i < Players.Length; ++i)
          if (Players[i] != null)
            ++count;

        return count;
      }
    }

    public bool HasOpenSlot
    {
      get
      {
        for (int i = 0; i < Players.Length; ++i)
          if (Players[i] == null)
            return true;

        return false;
      }
    }

    public bool Eliminated
    {
      get
      {
        for (int i = 0; i < Players.Length; ++i)
          if (Players[i]?.Eliminated == false)
            return false;

        return true;
      }
    }

    public string NameList
    {
      get
      {
        StringBuilder sb = new StringBuilder();

        for (int i = 0; i < Players.Length; ++i)
        {
          if (Players[i] == null)
            continue;

          Mobile mob = Players[i].Mobile;

          if (sb.Length > 0)
            sb.Append(", ");

          sb.Append(mob.Name);
        }

        if (sb.Length == 0)
          return "Empty";

        return sb.ToString();
      }
    }

    public DuelPlayer Find(Mobile mob)
    {
      if (mob is PlayerMobile pm)
      {
        if (pm.DuelContext == Context && pm.DuelPlayer.Participant == this)
          return pm.DuelPlayer;

        return null;
      }

      for (int i = 0; i < Players.Length; ++i)
        if (Players[i]?.Mobile == mob)
          return Players[i];

      return null;
    }

    public bool Contains(Mobile mob)
    {
      return Find(mob) != null;
    }

    public void Broadcast(int hue, string message, string nonLocalOverhead, string localOverhead)
    {
      for (int i = 0; i < Players.Length; ++i)
        if (Players[i] != null)
        {
          if (message != null)
            Players[i].Mobile.SendMessage(hue, message);

          if (nonLocalOverhead != null)
            Players[i].Mobile.NonlocalOverheadMessage(MessageType.Regular, hue, false,
              string.Format(nonLocalOverhead, Players[i].Mobile.Name,
                Players[i].Mobile.Female ? "her" : "his"));

          if (localOverhead != null)
            Players[i].Mobile.LocalOverheadMessage(MessageType.Regular, hue, false, localOverhead);
        }
    }

    public void Nullify(DuelPlayer player)
    {
      if (player == null)
        return;

      int index = Array.IndexOf(Players, player);

      if (index == -1)
        return;

      Players[index] = null;
    }

    public void Remove(DuelPlayer player)
    {
      if (player == null)
        return;

      int index = Array.IndexOf(Players, player);

      if (index == -1)
        return;

      DuelPlayer[] old = Players;
      Players = new DuelPlayer[old.Length - 1];

      for (int i = 0; i < index; ++i)
        Players[i] = old[i];

      for (int i = index + 1; i < old.Length; ++i)
        Players[i - 1] = old[i];
    }

    public void Remove(Mobile player)
    {
      Remove(Find(player));
    }

    public void Add(Mobile player)
    {
      if (Contains(player))
        return;

      for (int i = 0; i < Players.Length; ++i)
        if (Players[i] == null)
        {
          Players[i] = new DuelPlayer(player, this);
          return;
        }

      Resize(Players.Length + 1);
      Players[Players.Length - 1] = new DuelPlayer(player, this);
    }

    public void Resize(int count)
    {
      DuelPlayer[] old = Players;
      Players = new DuelPlayer[count];

      if (old != null)
      {
        int ct = 0;

        for (int i = 0; i < old.Length; ++i)
          if (old[i] != null && ct < count)
            Players[ct++] = old[i];
      }
    }
  }

  public class DuelPlayer
  {
    private bool m_Eliminated;

    public DuelPlayer(Mobile mob, Participant p)
    {
      Mobile = mob;
      Participant = p;

      if (mob is PlayerMobile mobile)
        mobile.DuelPlayer = this;
    }

    public Mobile Mobile{ get; }

    public bool Ready{ get; set; }

    public bool Eliminated
    {
      get => m_Eliminated;
      set
      {
        m_Eliminated = value;
        if (Participant.Context.m_Tournament != null && m_Eliminated)
        {
          Participant.Context.m_Tournament.OnEliminated(this);
          Mobile.SendEverything();
        }
      }
    }

    public Participant Participant{ get; set; }
  }
}