using Server.Mobiles;
using System;
using System.Collections.Generic;
using System.Linq;

namespace Server.Items
{
    /// <summary>
    /// This attack allows you to disarm your foe.
    /// Now in Age of Shadows, a successful Disarm leaves the victim unable to re-arm another weapon for several seconds.
    /// </summary>
    public class Disarm : WeaponAbility
    {
        public static readonly TimeSpan BlockEquipDuration = TimeSpan.FromSeconds(5.0);

        public override int BaseMana => 20;

        public override bool RequiresSecondarySkill(Mobile from)
        {
            BaseWeapon weapon = from.Weapon as BaseWeapon;

            if (weapon == null)
                return false;

            return weapon.Skill != SkillName.Wrestling;
        }

        public override void OnHit(Mobile attacker, Mobile defender, int damage)
        {
            if (!Validate(attacker))
                return;

            ClearCurrentAbility(attacker);

            if (IsImmune(defender))
            {
                attacker.SendLocalizedMessage(1111827); // Your opponent is gripping their weapon too tightly to be disarmed.
                defender.SendLocalizedMessage(1111828); // You will not be caught off guard by another disarm attack for some time.
                return;
            }

            Item toDisarm = defender.FindItemOnLayer(Layer.OneHanded);

            if (toDisarm == null || !toDisarm.Movable)
                toDisarm = defender.FindItemOnLayer(Layer.TwoHanded);

            Container pack = defender.Backpack;

            if (pack == null || (toDisarm != null && !toDisarm.Movable))
            {
                attacker.SendLocalizedMessage(1004001); // You cannot disarm your opponent.
            }
            else if (toDisarm == null || toDisarm is BaseShield)
            {
                attacker.SendLocalizedMessage(1060849); // Your target is already unarmed!
            }
            else if (CheckMana(attacker, true))
            {
                attacker.SendLocalizedMessage(1060092); // You disarm their weapon!
                defender.SendLocalizedMessage(1060093); // Your weapon has been disarmed!

                defender.PlaySound(0x3B9);
                defender.FixedParticles(0x37BE, 232, 25, 9948, EffectLayer.LeftHand);

                pack.DropItem(toDisarm);

                BuffInfo.AddBuff(defender, new BuffInfo(BuffIcon.NoRearm, 1075637, BlockEquipDuration, defender));

                BaseWeapon.BlockEquip(defender, BlockEquipDuration);

                if (defender is BaseCreature && _AutoRearms.Any(t => t == defender.GetType()))
                {
                    Timer.DelayCall(BlockEquipDuration + TimeSpan.FromSeconds(Utility.RandomMinMax(3, 10)), () =>
                    {
                        if (toDisarm != null && !toDisarm.Deleted && toDisarm.IsChildOf(defender.Backpack))
                            defender.EquipItem(toDisarm);
                    });
                }

                AddImmunity(defender, attacker.Weapon is Fists ? TimeSpan.FromSeconds(10) : TimeSpan.FromSeconds(15));
            }
        }

        private readonly Type[] _AutoRearms =
        {
            typeof(BritannianInfantry)
        };

        public static List<Mobile> _Immunity;

        public static bool IsImmune(Mobile m)
        {
            return _Immunity != null && _Immunity.Contains(m);
        }

        public static void AddImmunity(Mobile m, TimeSpan duration)
        {
            if (_Immunity == null)
                _Immunity = new List<Mobile>();

            _Immunity.Add(m);

            Timer.DelayCall(duration, mob =>
                {
                    if (_Immunity != null && _Immunity.Contains(mob))
                        _Immunity.Remove(mob);
                }, m);
        }
    }
}