using System;
using System.Collections.Generic;

namespace Server.Items;

public class ForceOfNature : WeaponAbility
{
    public override int BaseMana => Core.SA ? 35 : 40;

    public override void OnHit(Mobile attacker, Mobile defender, int damage, WorldLocation worldLocation)
    {
        if (!Validate(attacker) || !CheckMana(attacker, true))
        {
            return;
        }

        ClearCurrentAbility(attacker);

        Remove(attacker);

        attacker.SendLocalizedMessage(1074374); // You attack your enemy with the force of nature!
        defender.SendLocalizedMessage(1074375); // You are assaulted with great force!

        defender.PlaySound(0x22F);
        defender.FixedParticles(0x36CB, 1, 9, 9911, 67, 5, EffectLayer.Head);
        defender.FixedParticles(0x374A, 1, 17, 9502, 1108, 4, (EffectLayer)255);

        if (Core.SA)
        {
            AOS.Damage(defender, attacker, Utility.Random(15, 20), false, 0, 0, 0, 0, 0, 0, 100);
        }

        var t = new ForceOfNatureTimer(attacker, defender);
        t.Start();

        _table[attacker] = t;
    }

    private static readonly Dictionary<Mobile, ForceOfNatureTimer> _table = [];

    public static void Remove(Mobile m)
    {
        if (_table.Remove(m, out var timer))
        {
            timer.Stop();
        }
    }

    public static void OnHit(Mobile from, Mobile target)
    {
        if (!_table.TryGetValue(from, out var t) || t.Target != target)
        {
            return;
        }

        if (Core.SA)
        {
            OnHitSA(t);
        }
        else
        {
            OnHitML(t);
        }
    }

    private static void OnHitSA(ForceOfNatureTimer t)
    {
        var from = t.From;
        var target = t.Target;

        t.Hits++;
        t.LastHit = Core.Now;

        if (t.Hits % 12 == 0)
        {
            var duration = target.Skills[SkillName.MagicResist].Value >= 90.0 ? 1 : 2;
            target.Paralyze(TimeSpan.FromSeconds(duration));

            target.FixedEffect(0x376A, 9, 32);
            target.PlaySound(0x204);

            t.Hits = 0;

            from.SendLocalizedMessage(1004013);   // You successfully stun your opponent!
            target.SendLocalizedMessage(1004014); // You have been stunned!
        }
    }

    private static void OnHitML(ForceOfNatureTimer t)
    {
        var from = t.From;

        // TODO: What is the effect?
        AOS.Damage(from, from, Utility.Random(25, 10), false, 0, 0, 0, 100, 0);
    }

    public static double GetDamageScalar(Mobile from, Mobile target)
    {
        if (!_table.TryGetValue(from, out var t) || t.Target != target)
        {
            return 1.0;
        }

        if (Core.SA)
        {
            var bonus = Math.Min(100, Math.Max(50, from.Str - 50));
            return (100.0 + bonus) / 100.0;
        }

        return 1.65;
    }

    private class ForceOfNatureTimer : Timer
    {
        public Mobile Target { get; }
        public Mobile From { get; }
        public int Hits { get; set; }
        public DateTime LastHit { get; set; }

        public ForceOfNatureTimer(Mobile from, Mobile target)
            : base(TimeSpan.FromSeconds(Core.SA ? 10 : 360))
        {
            Target = target;
            From = from;
            Hits = 1;
            LastHit = Core.Now;
        }

        protected override void OnTick()
        {
            if (!Core.SA || !From.Alive || !Target.Alive || Target.Map != From.Map ||
                Target.GetDistanceToSqrt(From.Location) > 10 || LastHit + TimeSpan.FromSeconds(20) < Core.Now)
            {
                Remove(From);
            }
        }
    }
}