using System.Collections.Generic;
using System.Text;
using Server.Gumps;
using Server.Mobiles;
using Server.Network;

namespace Server.Engines.ConPVP
{
  public class ArenasMoongate : Item
  {
    [Constructible]
    public ArenasMoongate() : base(0x1FD4)
    {
      Movable = false;
      Light = LightType.Circle300;
    }

    public ArenasMoongate(Serial serial) : base(serial)
    {
    }

    public override string DefaultName => "arena moongate";

    public override void Serialize(GenericWriter writer)
    {
      base.Serialize(writer);

      writer.Write(0);
    }

    public override void Deserialize(GenericReader reader)
    {
      base.Deserialize(reader);

      int version = reader.ReadInt();
      Light = LightType.Circle300;
    }

    public bool UseGate(Mobile from)
    {
      if (DuelContext.CheckCombat(from))
      {
        from.SendMessage(0x22, "You have recently been in combat with another player and cannot use this moongate.");
        return false;
      }

      if (from.Spell != null)
      {
        from.SendLocalizedMessage(1049616); // You are too busy to do that at the moment.
        return false;
      }

      from.CloseGump(typeof(ArenaGump));
      from.SendGump(new ArenaGump(from, this));

      if (!from.Hidden || from.AccessLevel == AccessLevel.Player)
        Effects.PlaySound(from.Location, from.Map, 0x20E);

      return true;
    }

    public override void OnDoubleClick(Mobile from)
    {
      if (from.InRange(GetWorldLocation(), 1))
        UseGate(from);
      else
        from.LocalOverheadMessage(MessageType.Regular, 0x3B2, 1019045); // I can't reach that
    }

    public override bool OnMoveOver(Mobile m)
    {
      return !m.Player || UseGate(m);
    }
  }

  public class ArenaGump : Gump
  {
    private List<Arena> m_Arenas;

    private int m_ColumnX = 12;
    private Mobile m_From;
    private ArenasMoongate m_Gate;

    public ArenaGump(Mobile from, ArenasMoongate gate) : base(50, 50)
    {
      m_From = from;
      m_Gate = gate;
      m_Arenas = Arena.Arenas;

      AddPage(0);

      int height = 12 + 20 + m_Arenas.Count * 31 + 24 + 12;

      AddBackground(0, 0, 499 + 40, height, 0x2436);

      List<Arena> list = m_Arenas;

      for (int i = 1; i < list.Count; i += 2)
        AddImageTiled(12, 32 + i * 31, 475 + 40, 30, 0x2430);

      AddAlphaRegion(10, 10, 479 + 40, height - 20);

      AddColumnHeader(35, null);
      AddColumnHeader(115, "Arena");
      AddColumnHeader(325, "Participants");
      AddColumnHeader(40, "Obs");

      AddButton(499 + 40 - 12 - 63 - 4 - 63, height - 12 - 24, 247, 248, 1, GumpButtonType.Reply, 0);
      AddButton(499 + 40 - 12 - 63, height - 12 - 24, 241, 242, 2, GumpButtonType.Reply, 0);

      for (int i = 0; i < list.Count; ++i)
      {
        Arena ar = list[i];

        string name = ar.Name;

        if (name == null)
          name = "(no name)";

        int x = 12;
        int y = 32 + i * 31;

        int color = ar.Players.Count > 0 ? 0xCCFFCC : 0xCCCCCC;

        AddRadio(x + 3, y + 1, 9727, 9730, false, i);
        x += 35;

        AddBorderedText(x + 5, y + 5, 115 - 5, name, color, 0);
        x += 115;

        StringBuilder sb = new StringBuilder();

        if (ar.Players.Count > 0)
        {
          Ladder ladder = Ladder.Instance;

          if (ladder == null)
            continue;

          LadderEntry p1 = null, p2 = null, p3 = null, p4 = null;

          for (int j = 0; j < ar.Players.Count; ++j)
          {
            Mobile mob = ar.Players[j];
            LadderEntry c = ladder.Find(mob);

            if (p1 == null || c.Index < p1.Index)
            {
              p4 = p3;
              p3 = p2;
              p2 = p1;
              p1 = c;
            }
            else if (p2 == null || c.Index < p2.Index)
            {
              p4 = p3;
              p3 = p2;
              p2 = c;
            }
            else if (p3 == null || c.Index < p3.Index)
            {
              p4 = p3;
              p3 = c;
            }
            else if (p4 == null || c.Index < p4.Index)
            {
              p4 = c;
            }
          }

          Append(sb, p1);
          Append(sb, p2);
          Append(sb, p3);
          Append(sb, p4);

          if (ar.Players.Count > 4)
            sb.Append(", ...");
        }
        else
        {
          sb.Append("Empty");
        }

        AddBorderedText(x + 5, y + 5, 325 - 5, sb.ToString(), color, 0);
        x += 325;

        AddBorderedText(x, y + 5, 40, Center(ar.Spectators.ToString()), color, 0);
      }
    }

    private void Append(StringBuilder sb, LadderEntry le)
    {
      if (le == null)
        return;

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

      sb.Append(le.Mobile.Name);
    }

    public override void OnResponse(NetState sender, RelayInfo info)
    {
      if (info.ButtonID != 1)
        return;

      int[] switches = info.Switches;

      if (switches.Length == 0)
        return;

      int opt = switches[0];

      if (opt < 0 || opt >= m_Arenas.Count)
        return;

      Arena arena = m_Arenas[opt];

      if (!m_From.InRange(m_Gate.GetWorldLocation(), 1) || m_From.Map != m_Gate.Map)
      {
        m_From.SendLocalizedMessage(1019002); // You are too far away to use the gate.
      }
      else if (DuelContext.CheckCombat(m_From))
      {
        m_From.SendMessage(0x22,
          "You have recently been in combat with another player and cannot use this moongate.");
      }
      else if (m_From.Spell != null)
      {
        m_From.SendLocalizedMessage(1049616); // You are too busy to do that at the moment.
      }
      else if (m_From.Map == arena.Facet && arena.Zone.Contains(m_From))
      {
        m_From.SendLocalizedMessage(1019003); // You are already there.
      }
      else
      {
        BaseCreature.TeleportPets(m_From, arena.GateIn, arena.Facet);

        m_From.Combatant = null;
        m_From.Warmode = false;
        m_From.Hidden = true;

        m_From.MoveToWorld(arena.GateIn, arena.Facet);

        Effects.PlaySound(arena.GateIn, arena.Facet, 0x1FE);
      }
    }

    public string Center(string text)
    {
      return $"<CENTER>{text}</CENTER>";
    }

    public string Color(string text, int color)
    {
      return $"<BASEFONT COLOR=#{color:X6}>{text}</BASEFONT>";
    }

    private void AddBorderedText(int x, int y, int width, string text, int color, int borderColor)
    {
      /*AddColoredText( x - 1, y, width, text, borderColor );
      AddColoredText( x + 1, y, width, text, borderColor );
      AddColoredText( x, y - 1, width, text, borderColor );
      AddColoredText( x, y + 1, width, text, borderColor );*/
      /*AddColoredText( x - 1, y - 1, width, text, borderColor );
      AddColoredText( x + 1, y + 1, width, text, borderColor );*/
      AddColoredText(x, y, width, text, color);
    }

    private void AddColoredText(int x, int y, int width, string text, int color)
    {
      if (color == 0)
        AddHtml(x, y, width, 20, text, false, false);
      else
        AddHtml(x, y, width, 20, Color(text, color), false, false);
    }

    private void AddColumnHeader(int width, string name)
    {
      AddBackground(m_ColumnX, 12, width, 20, 0x242C);
      AddImageTiled(m_ColumnX + 2, 14, width - 4, 16, 0x2430);

      if (name != null)
        AddBorderedText(m_ColumnX, 13, width, Center(name), 0xFFFFFF, 0);

      m_ColumnX += width;
    }
  }
}