using System;
using Server.Mobiles;
using Server.Spells;

namespace Server.Items
{
  public class IcyPatch : Item
  {
    /* On OSI, the iceypatch with itemid 0x122a is "rarer", so we will give it 1:10 chance of creating it that way */

    [Constructible]
    public IcyPatch()
      : this(Utility.Random(10) == 0 ? 0x122A : 0x122F)
    {
    }

    public IcyPatch(int itemid)
      : base(itemid)
    {
      Hue = 0x481;
    }

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

    public override int LabelNumber => 1095159; //An Icy Patch
    public override double DefaultWeight => 5.0;

    public override bool OnMoveOver(Mobile m)
    {
      if (m is PlayerMobile && m.Alive && m.AccessLevel == AccessLevel.Player)
        switch (Utility.Random(3))
        {
          case 0:
            RunSequence(m, 1095160, false);
            break; //You steadily walk over the slippery surface.
          case 1:
            RunSequence(m, 1095161, true);
            break; //You skillfully manage to maintain your balance.
          default:
            RunSequence(m, 1095162, true);
            break; //You lose your footing and ungracefully splatter on the ground.
        }
      return base.OnMoveOver(m);
    }

    public virtual void RunSequence(Mobile m, int message, bool freeze)
    {
      if (freeze)
      {
        m.Frozen = true;
        Timer.DelayCall(TimeSpan.FromSeconds(message == 1095162 ? 2.0 : 1.25), EndFall_Callback, m);
      }

      m.SendLocalizedMessage(message);
      
      int action = 0;
      int sound = 0;

      if (message == 1095162)
      {
        if (m.Mounted)
          m.Mount.Rider = null;

        Point3D p = new Point3D(Location);

        if (SpellHelper.FindValidSpawnLocation(Map, ref p, true))
          Timer.DelayCall(TimeSpan.FromSeconds(0), () => m.MoveToWorld(p, m.Map));

        action = 21 + Utility.Random(2);
        sound = m.Female ? 0x317 : 0x426;
      }
      else if (message == 1095161)
      {
        action = 17;
        sound = m.Female ? 0x319 : 0x429;
      }

      if (action > 0)
        Timer.DelayCall(TimeSpan.FromSeconds(0.4), from => BeginFall_Callback(from, action, sound), m);
    }

    private static void BeginFall_Callback(Mobile m, int action, int sound)
    {
      if (!m.Mounted)
        m.Animate(action, 1, 1, false, true, 0);
      
      m.PlaySound(sound);
    }

    private static void EndFall_Callback(Mobile m)
    {
      m.Frozen = false;
    }

    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();
    }
  }
}