using Server.Engines.MLQuests;
using Server.Engines.MLQuests.Objectives;
using Server.Mobiles;

namespace Server.Items
{
    public class ScrollofTranscendence : SpecialScroll
    {
        [Constructible]
        public ScrollofTranscendence(SkillName skill = SkillName.Alchemy, double value = 0.0) : base(skill, value)
        {
            ItemID = 0x14EF;
            Hue = 0x490;
        }

        public ScrollofTranscendence(Serial serial) : base(serial)
        {
        }

        public override int LabelNumber => 1094934; // Scroll of Transcendence

        /* Using a Scroll of Transcendence for a given skill will permanently increase your current
         * level in that skill by the amount of points displayed on the scroll.
         * As you may not gain skills beyond your maximum skill cap, any excess points will be lost.
         */
        public override int Message =>
            1094933;

        public override string DefaultTitle =>
            $"<basefont color=#FFFFFF>Scroll of Transcendence ({Value} Skill):</basefont>";

        public static ScrollofTranscendence CreateRandom(int min, int max) =>
            new(Utility.RandomSkill(), Utility.RandomMinMax(min, max) * 0.1);

        public override void GetProperties(ObjectPropertyList list)
        {
            base.GetProperties(list);
            list.Add(1076759, $"{GetName()}\t{Value:0.#} Skill Points");
        }

        public override bool CanUse(Mobile from)
        {
            if (!(base.CanUse(from) && from is PlayerMobile pm))
            {
                return false;
            }

            var context = MLQuestSystem.GetContext(pm);

            if (context != null)
            {
                foreach (var instance in context.QuestInstances)
                {
                    foreach (var objective in instance.Objectives)
                    {
                        if (!objective.Expired && objective is GainSkillObjectiveInstance objectiveInstance &&
                            objectiveInstance.Handles(Skill))
                        {
                            from.SendMessage("You are already under the effect of an enhanced skillgain quest.");
                            return false;
                        }
                    }
                }
            }

            if (pm.AcceleratedStart > Core.Now)
            {
                from.SendLocalizedMessage(1077951); // You are already under the effect of an accelerated skillgain scroll.
                return false;
            }

            return true;
        }

        public override void Use(Mobile from)
        {
            if (!CanUse(from))
            {
                return;
            }

            var tskill = from.Skills[Skill].Base; // value of skill without item bonuses etc
            var tcap = from.Skills[Skill].Cap;    // maximum value permitted
            var canGain = false;

            var newValue = Value;

            if (tskill + newValue > tcap)
            {
                newValue = tcap - tskill;
            }

            if (tskill < tcap && from.Skills[Skill].Lock == SkillLock.Up)
            {
                if (from.SkillsTotal + newValue * 10 > from.SkillsCap)
                {
                    var ns = from.Skills.Length; // number of items in from.Skills[]

                    for (var i = 0; i < ns; i++)
                        // skill must point down and its value must be enough
                    {
                        if (from.Skills[i].Lock == SkillLock.Down && from.Skills[i].Base >= newValue)
                        {
                            from.Skills[i].Base -= newValue;
                            canGain = true;
                            break;
                        }
                    }
                }
                else
                {
                    canGain = true;
                }
            }

            if (!canGain)
            {
                /* You cannot increase this skill at this time. The skill may be locked or set to lower in your skill menu.
                 * If you are at your total skill cap, you must use a Powerscroll to increase your current skill cap.
                 */
                from.SendLocalizedMessage(
                    1094935
                );
                return;
            }

            from.SendLocalizedMessage(
                1049513,
                GetNameLocalized()
            ); // You feel a surge of magic as the scroll enhances your ~1_type~!

            from.Skills[Skill].Base += newValue;

            Effects.PlaySound(from.Location, from.Map, 0x1F7);
            Effects.SendTargetParticles(from, 0x373A, 35, 45, 0x00, 0x00, 9502, (EffectLayer)255, 0x100);
            Effects.SendTargetParticles(from, 0x376A, 35, 45, 0x00, 0x00, 9502, (EffectLayer)255, 0x100);

            Delete();
        }

        public override void Serialize(IGenericWriter writer)
        {
            base.Serialize(writer);

            writer.Write(0); // version
        }

        public override void Deserialize(IGenericReader reader)
        {
            base.Deserialize(reader);

            var version = InheritsItem ? 0 : reader.ReadInt(); // Required for SpecialScroll insertion

            LootType = LootType.Cursed;
            Insured = false;

            if (Hue == 0x7E)
            {
                Hue = 0x490;
            }
        }
    }
}