using System;
using System.Collections;

namespace Server.Spells.Second
{
    public class ProtectionSpell : MagerySpell
    {
        private static readonly Hashtable m_Registry = new Hashtable();
        private static readonly SpellInfo m_Info = new SpellInfo(
            "Protection", "Uus Sanct",
            236,
            9011,
            Reagent.Garlic,
            Reagent.Ginseng,
            Reagent.SulfurousAsh);
        private static readonly Hashtable m_Table = new Hashtable();
        public ProtectionSpell(Mobile caster, Item scroll)
            : base(caster, scroll, m_Info)
        {
        }

        public static Hashtable Registry => m_Registry;
        public override SpellCircle Circle => SpellCircle.Second;
        public static void Toggle(Mobile caster, Mobile target, bool archprotection)
        {
            /* Players under the protection spell effect can no longer have their spells "disrupted" when hit.
            * Players under the protection spell have decreased physical resistance stat value (-15 + (Inscription/20),
            * a decreased "resisting spells" skill value by -35 + (Inscription/20),
            * and a slower casting speed modifier (technically, a negative "faster cast speed") of 2 points.
            * The protection spell has an indefinite duration, becoming active when cast, and deactivated when re-cast.
            * Reactive Armor, Protection, and Magic Reflection will stay on—even after logging out,
            * even after dying—until you “turn them off” by casting them again.
            */
            object[] mods = (object[])m_Table[target];

            if (mods == null)
            {
                target.PlaySound(0x1E9);
                target.FixedParticles(0x375A, 9, 20, 5016, EffectLayer.Waist);

                mods = new object[2]
                {
                    new ResistanceMod(ResistanceType.Physical, -15 + Math.Min((int)(caster.Skills[SkillName.Inscribe].Value / 20), 15)),
                    new DefaultSkillMod(SkillName.MagicResist, true, -35 + Math.Min((int)(caster.Skills[SkillName.Inscribe].Value / 20), 35))
                };

                m_Table[target] = mods;
                Registry[target] = 100.0;

                target.AddResistanceMod((ResistanceMod)mods[0]);
                target.AddSkillMod((SkillMod)mods[1]);

                int physloss = -15 + (int)(caster.Skills[SkillName.Inscribe].Value / 20);
                int resistloss = -35 + (int)(caster.Skills[SkillName.Inscribe].Value / 20);
                string args = string.Format("{0}\t{1}", physloss, resistloss);
                BuffInfo.AddBuff(target, new BuffInfo(archprotection ? BuffIcon.ArchProtection : BuffIcon.Protection, archprotection ? 1075816 : 1075814, 1075815, args.ToString()));
            }
            else
            {
                target.PlaySound(0x1ED);
                target.FixedParticles(0x375A, 9, 20, 5016, EffectLayer.Waist);

                m_Table.Remove(target);
                Registry.Remove(target);

                target.RemoveResistanceMod((ResistanceMod)mods[0]);
                target.RemoveSkillMod((SkillMod)mods[1]);

                BuffInfo.RemoveBuff(target, BuffIcon.Protection);
                BuffInfo.RemoveBuff(target, BuffIcon.ArchProtection);
            }
        }

        public static void EndProtection(Mobile m)
        {
            if (m_Table.Contains(m))
            {
                object[] mods = (object[])m_Table[m];

                m_Table.Remove(m);
                Registry.Remove(m);

                m.RemoveResistanceMod((ResistanceMod)mods[0]);
                m.RemoveSkillMod((SkillMod)mods[1]);

                BuffInfo.RemoveBuff(m, BuffIcon.Protection);
                BuffInfo.RemoveBuff(m, BuffIcon.ArchProtection);
            }
        }

        public override bool CheckCast()
        {
            return true;
        }

        public override void OnCast()
        {
            if (CheckSequence())
                Toggle(Caster, Caster, false);

            FinishSequence();
        }

        #region SA
        public static bool HasProtection(Mobile m)
        {
            return m_Table.ContainsKey(m);
        }
        #endregion

        private class InternalTimer : Timer
        {
            private readonly Mobile m_Caster;
            public InternalTimer(Mobile caster)
                : base(TimeSpan.FromSeconds(0))
            {
                double val = caster.Skills[SkillName.Magery].Value * 2.0;
                if (val < 15)
                    val = 15;
                else if (val > 240)
                    val = 240;

                m_Caster = caster;
                Delay = TimeSpan.FromSeconds(val);
                Priority = TimerPriority.OneSecond;
            }

            protected override void OnTick()
            {
                Registry.Remove(m_Caster);
            }
        }
    }
}