using System;
using System.Collections;
using Server.Targeting;

namespace Server.Spells.Fourth
{
  public class CurseSpell : MagerySpell
  {
    private static SpellInfo m_Info = new SpellInfo(
      "Curse", "Des Sanct",
      227,
      9031,
      Reagent.Nightshade,
      Reagent.Garlic,
      Reagent.SulfurousAsh
    );

    private static Hashtable m_UnderEffect = new Hashtable();

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

    public override SpellCircle Circle => SpellCircle.Fourth;

    public override void OnCast()
    {
      Caster.Target = new InternalTarget(this);
    }

    public static void RemoveEffect(object state)
    {
      Mobile m = (Mobile)state;

      m_UnderEffect.Remove(m);

      m.UpdateResistances();
    }

    public static bool UnderEffect(Mobile m)
    {
      return m_UnderEffect.Contains(m);
    }

    public void Target(Mobile m)
    {
      if (!Caster.CanSee(m))
      {
        Caster.SendLocalizedMessage(500237); // Target can not be seen.
      }
      else if (CheckHSequence(m))
      {
        SpellHelper.Turn(Caster, m);

        SpellHelper.CheckReflect((int)Circle, Caster, ref m);

        SpellHelper.AddStatCurse(Caster, m, StatType.Str);
        SpellHelper.DisableSkillCheck = true;
        SpellHelper.AddStatCurse(Caster, m, StatType.Dex);
        SpellHelper.AddStatCurse(Caster, m, StatType.Int);
        SpellHelper.DisableSkillCheck = false;

        Timer t = (Timer)m_UnderEffect[m];

        if (Caster.Player && m.Player /*&& Caster != m */ && t == null
        ) //On OSI you CAN curse yourself and get this effect.
        {
          TimeSpan duration = SpellHelper.GetDuration(Caster, m);
          m_UnderEffect[m] = t = Timer.DelayCall(duration, new TimerStateCallback(RemoveEffect), m);
          m.UpdateResistances();
        }

        m.Spell?.OnCasterHurt();

        m.Paralyzed = false;

        m.FixedParticles(0x374A, 10, 15, 5028, EffectLayer.Waist);
        m.PlaySound(0x1E1);

        int percentage = (int)(SpellHelper.GetOffsetScalar(Caster, m, true) * 100);
        TimeSpan length = SpellHelper.GetDuration(Caster, m);

        string args = $"{percentage}\t{percentage}\t{percentage}\t{10}\t{10}\t{10}\t{10}";

        BuffInfo.AddBuff(m, new BuffInfo(BuffIcon.Curse, 1075835, 1075836, length, m, args));

        HarmfulSpell(m);
      }

      FinishSequence();
    }

    private class InternalTarget : Target
    {
      private CurseSpell m_Owner;

      public InternalTarget(CurseSpell owner) : base(Core.ML ? 10 : 12, false, TargetFlags.Harmful)
      {
        m_Owner = owner;
      }

      protected override void OnTarget(Mobile from, object o)
      {
        if (o is Mobile)
          m_Owner.Target((Mobile)o);
      }

      protected override void OnTargetFinish(Mobile from)
      {
        m_Owner.FinishSequence();
      }
    }
  }
}