using System;
using System.Collections.Generic;
using System.Linq;
using Server.Engines.PartySystem;
using Server.Spells.Second;
using Server.Targeting;

namespace Server.Spells.Fourth
{
    public class ArchProtectionSpell : MagerySpell, ISpellTargetingPoint3D
    {
        private static readonly SpellInfo m_Info = new(
            "Arch Protection",
            "Vas Uus Sanct",
            Core.AOS ? 239 : 215,
            9011,
            Reagent.Garlic,
            Reagent.Ginseng,
            Reagent.MandrakeRoot,
            Reagent.SulfurousAsh
        );

        private static readonly Dictionary<Mobile, int> _Table = new();

        public ArchProtectionSpell(Mobile caster, Item scroll = null) : base(caster, scroll, m_Info)
        {
        }

        public override SpellCircle Circle => SpellCircle.Fourth;

        public void Target(IPoint3D p)
        {
            if (!Caster.CanSee(p))
            {
                Caster.SendLocalizedMessage(500237); // Target can not be seen.
            }
            else if (CheckSequence())
            {
                SpellHelper.Turn(Caster, p);

                SpellHelper.GetSurfaceTop(ref p);

                var loc = new Point3D(p);

                if (!Core.AOS)
                {
                    Effects.PlaySound(loc, Caster.Map, 0x299);
                }

                if (Caster.Map == null)
                {
                    FinishSequence();
                    return;
                }

                var targets = Caster.Map.GetMobilesInRange(loc, Core.AOS ? 2 : 3)
                    .Where(m => Caster.CanBeBeneficial(m, false));

                if (Core.AOS)
                {
                    var party = Party.Get(Caster);

                    foreach (var m in targets)
                    {
                        if (m == Caster || party?.Contains(m) == true)
                        {
                            Caster.DoBeneficial(m);
                            ProtectionSpell.Toggle(Caster, m);
                        }
                    }
                }
                else
                {
                    var val = (int)(Caster.Skills.Magery.Value / 10.0 + 1);

                    foreach (var m in targets)
                    {
                        if (m.BeginAction<ArchProtectionSpell>())
                        {
                            Caster.DoBeneficial(m);
                            m.VirtualArmorMod += val;

                            AddEntry(m, val);
                            new InternalTimer(m, Caster).Start();

                            m.FixedParticles(0x375A, 9, 20, 5027, EffectLayer.Waist);
                            m.PlaySound(0x1F7);
                        }
                    }
                }
            }

            FinishSequence();
        }

        public override void OnCast()
        {
            Caster.Target = new SpellTargetPoint3D(this, TargetFlags.None, Core.ML ? 10 : 12);
        }

        private static void AddEntry(Mobile m, int v)
        {
            _Table[m] = v;
        }

        public static void RemoveEntry(Mobile m)
        {
            if (_Table.Remove(m, out var v))
            {
                m.EndAction<ArchProtectionSpell>();
                m.VirtualArmorMod -= Math.Min(v, m.VirtualArmorMod);
            }
        }

        private class InternalTimer : Timer
        {
            private readonly Mobile m_Owner;

            public InternalTimer(Mobile target, Mobile caster) : base(TimeSpan.FromSeconds(0))
            {
                var time = caster.Skills.Magery.Value * 1.2;
                if (time > 144)
                {
                    time = 144;
                }

                Delay = TimeSpan.FromSeconds(time);

                m_Owner = target;
            }

            protected override void OnTick()
            {
                RemoveEntry(m_Owner);
            }
        }
    }
}