using System;
using System.Linq;
using Server.Factions;
using Server.Multis;
using Server.Network;
using Server.Spells;

namespace Server.Items
{
  public enum PlankSide
  {
    Port,
    Starboard
  }

  public class Plank : Item, ILockable
  {
    private Timer m_CloseTimer;

    public Plank(BaseBoat boat, PlankSide side, uint keyValue) : base(0x3EB1 + (int)side)
    {
      Boat = boat;
      Side = side;
      KeyValue = keyValue;
      Locked = true;

      Movable = false;
    }

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

    [CommandProperty(AccessLevel.GameMaster)]
    public BaseBoat Boat { get; set; }

    [CommandProperty(AccessLevel.GameMaster)]
    public PlankSide Side { get; set; }

    [CommandProperty(AccessLevel.GameMaster)]
    public bool IsOpen => ItemID == 0x3ED5 || ItemID == 0x3ED4 || ItemID == 0x3E84 || ItemID == 0x3E89;

    [CommandProperty(AccessLevel.GameMaster)]
    public bool Starboard => Side == PlankSide.Starboard;

    [CommandProperty(AccessLevel.GameMaster)]
    public bool Locked { get; set; }

    [CommandProperty(AccessLevel.GameMaster)]
    public uint KeyValue { get; set; }

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

      writer.Write(0); // version

      writer.Write(Boat);
      writer.Write((int)Side);
      writer.Write(Locked);
      writer.Write(KeyValue);
    }

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

      int version = reader.ReadInt();

      switch (version)
      {
        case 0:
          {
            Boat = reader.ReadItem() as BaseBoat;
            Side = (PlankSide)reader.ReadInt();
            Locked = reader.ReadBool();
            KeyValue = reader.ReadUInt();

            if (Boat == null)
              Delete();

            break;
          }
      }

      if (IsOpen)
      {
        m_CloseTimer = new CloseTimer(this);
        m_CloseTimer.Start();
      }
    }

    public void SetFacing(Direction dir)
    {
      if (IsOpen)
        ItemID = dir switch
        {
          Direction.North => Starboard ? 0x3ED4 : 0x3ED5,
          Direction.East => Starboard ? 0x3E84 : 0x3E89,
          Direction.South => Starboard ? 0x3ED5 : 0x3ED4,
          Direction.West => Starboard ? 0x3E89 : 0x3E84,
          _ => ItemID
        };
      else
        ItemID = dir switch
        {
          Direction.North => Starboard ? 0x3EB2 : 0x3EB1,
          Direction.East => Starboard ? 0x3E85 : 0x3E8A,
          Direction.South => Starboard ? 0x3EB1 : 0x3EB2,
          Direction.West => Starboard ? 0x3E8A : 0x3E85,
          _ => ItemID
        };
    }

    public void Open()
    {
      if (IsOpen || Deleted)
        return;

      m_CloseTimer?.Stop();

      m_CloseTimer = new CloseTimer(this);
      m_CloseTimer.Start();

      ItemID = ItemID switch
      {
        0x3EB1 => 0x3ED5,
        0x3E8A => 0x3E89,
        0x3EB2 => 0x3ED4,
        0x3E85 => 0x3E84,
        _ => ItemID
      };

      Boat?.Refresh();
    }

    public override bool OnMoveOver(Mobile from)
    {
      if (IsOpen)
      {
        if (from is BaseFactionGuard)
          return false;

        if ((from.Direction & Direction.Running) != 0 || Boat?.Contains(from) == false)
          return true;

        Map map = Map;

        if (map == null)
          return false;

        int rx = 0, ry = 0;

        if (ItemID == 0x3ED4)
          rx = 1;
        else if (ItemID == 0x3ED5)
          rx = -1;
        else if (ItemID == 0x3E84)
          ry = 1;
        else if (ItemID == 0x3E89)
          ry = -1;

        for (int i = 1; i <= 6; ++i)
        {
          int x = X + i * rx;
          int y = Y + i * ry;
          int z;

          for (int j = -8; j <= 8; ++j)
          {
            z = from.Z + j;

            if (map.CanFit(x, y, z, 16, false, false) && !SpellHelper.CheckMulti(new Point3D(x, y, z), map) &&
                !Region.Find(new Point3D(x, y, z), map).IsPartOf<StrongholdRegion>())
            {
              if (i == 1 && j >= -2 && j <= 2)
                return true;

              from.Location = new Point3D(x, y, z);
              return false;
            }
          }

          z = map.GetAverageZ(x, y);

          if (map.CanFit(x, y, z, 16, false, false) && !SpellHelper.CheckMulti(new Point3D(x, y, z), map) &&
              !Region.Find(new Point3D(x, y, z), map).IsPartOf<StrongholdRegion>())
          {
            if (i == 1)
              return true;

            from.Location = new Point3D(x, y, z);
            return false;
          }
        }

        return true;
      }

      return false;
    }

    public bool CanClose() => Map != null && !Deleted && GetObjectsInRange(0).All(o => o == this);

    public void Close()
    {
      if (!IsOpen || !CanClose() || Deleted)
        return;

      m_CloseTimer?.Stop();

      m_CloseTimer = null;

      ItemID = ItemID switch
      {
        0x3ED5 => 0x3EB1,
        0x3E89 => 0x3E8A,
        0x3ED4 => 0x3EB2,
        0x3E84 => 0x3E85,
        _ => ItemID
      };

      Boat?.Refresh();
    }

    public override void OnDoubleClickDead(Mobile from)
    {
      OnDoubleClick(from);
    }

    public override void OnDoubleClick(Mobile from)
    {
      if (Boat == null)
        return;

      if (from.InRange(GetWorldLocation(), 8))
      {
        if (Boat.Contains(from))
        {
          if (IsOpen)
            Close();
          else
            Open();
        }
        else
        {
          if (!IsOpen)
          {
            if (!Locked)
            {
              Open();
            }
            else if (from.AccessLevel >= AccessLevel.GameMaster)
            {
              from.LocalOverheadMessage(MessageType.Regular, 0x00,
                502502); // That is locked but your godly powers allow access
              Open();
            }
            else
            {
              from.LocalOverheadMessage(MessageType.Regular, 0x00, 502503); // That is locked.
            }
          }
          else if (!Locked)
          {
            from.Location = new Point3D(X, Y, Z + 3);
          }
          else if (from.AccessLevel >= AccessLevel.GameMaster)
          {
            from.LocalOverheadMessage(MessageType.Regular, 0x00,
              502502); // That is locked but your godly powers allow access
            from.Location = new Point3D(X, Y, Z + 3);
          }
          else
          {
            from.LocalOverheadMessage(MessageType.Regular, 0x00, 502503); // That is locked.
          }
        }
      }
    }

    private class CloseTimer : Timer
    {
      private readonly Plank m_Plank;

      public CloseTimer(Plank plank) : base(TimeSpan.FromSeconds(5.0), TimeSpan.FromSeconds(5.0))
      {
        m_Plank = plank;
        Priority = TimerPriority.OneSecond;
      }

      protected override void OnTick()
      {
        m_Plank.Close();
      }
    }
  }
}