using System;
using System.Collections.Generic;
using Server.Items;

namespace Server.Spells.Bushido
{
  public class CounterAttack : SamuraiSpell
  {
    private static SpellInfo m_Info = new SpellInfo(
      "CounterAttack", null,
      -1,
      9002
    );

    private static Dictionary<Mobile, Timer> m_Table = new Dictionary<Mobile, Timer>();

    public CounterAttack(Mobile caster, Item scroll) : base(caster, scroll, m_Info)
    {
    }

    public override TimeSpan CastDelayBase => TimeSpan.FromSeconds(0.25);

    public override double RequiredSkill => 40.0;
    public override int RequiredMana => 5;

    public override bool CheckCast()
    {
      if (!base.CheckCast())
        return false;

      if (Caster.FindItemOnLayer(Layer.TwoHanded) is BaseShield)
        return true;

      if (Caster.FindItemOnLayer(Layer.OneHanded) is BaseWeapon)
        return true;

      if (Caster.FindItemOnLayer(Layer.TwoHanded) is BaseWeapon)
        return true;

      Caster.SendLocalizedMessage(1062944); // You must have a weapon or a shield equipped to use this ability!
      return false;
    }

    public override void OnBeginCast()
    {
      base.OnBeginCast();

      Caster.FixedEffect(0x37C4, 10, 7, 4, 3);
    }

    public override void OnCast()
    {
      if (CheckSequence())
      {
        Caster.SendLocalizedMessage(1063118); // You prepare to respond immediately to the next blocked blow.

        OnCastSuccessful(Caster);

        StartCountering(Caster);
      }

      FinishSequence();
    }

    public static bool IsCountering(Mobile m) => m_Table.ContainsKey(m);

    public static void StartCountering(Mobile m)
    {
      m_Table.TryGetValue(m, out Timer timer);
      timer?.Stop();

      m_Table[m] = timer = new InternalTimer(m);

      timer.Start();
    }

    public static void StopCountering(Mobile m)
    {
      if (m_Table.TryGetValue(m, out Timer timer))
      {
        timer.Stop();
        m_Table.Remove(m);
      }

      OnEffectEnd(m, typeof(CounterAttack));
    }

    private class InternalTimer : Timer
    {
      private Mobile m_Mobile;

      public InternalTimer(Mobile m) : base(TimeSpan.FromSeconds(30.0))
      {
        m_Mobile = m;
        Priority = TimerPriority.TwoFiftyMS;
      }

      protected override void OnTick()
      {
        StopCountering(m_Mobile);
        m_Mobile.SendLocalizedMessage(1063119); // You return to your normal stance.
      }
    }
  }
}