using System.Collections.Generic;
using Server.Targeting;

namespace Server.Items
{
  public class ArcaneGem : Item
  {
    public const int DefaultArcaneHue = 2117;

    [Constructible]
    public ArcaneGem() : base(0x1EA7)
    {
      Stackable = Core.ML;
      Weight = 1.0;
    }

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

    public override string DefaultName => "arcane gem";

    public override void OnDoubleClick(Mobile from)
    {
      if (!IsChildOf(from.Backpack))
      {
        from.SendLocalizedMessage(1042001); // That must be in your pack for you to use it.
      }
      else
      {
        from.BeginTarget(2, false, TargetFlags.None, OnTarget);
        from.SendMessage("What do you wish to use the gem on?");
      }
    }

    public int GetChargesFor(Mobile m)
    {
      int v = (int)(m.Skills.Tailoring.Value / 5);

      if (v < 16)
        return 16;
      if (v > 24)
        return 24;

      return v;
    }

    public void OnTarget(Mobile from, object obj)
    {
      if (!IsChildOf(from.Backpack))
      {
        from.SendLocalizedMessage(1042001); // That must be in your pack for you to use it.
        return;
      }

      if (obj is IArcaneEquip eq && eq is Item item)
      {
        BaseClothing clothing = item as BaseClothing;
        BaseArmor armor = item as BaseArmor;
        BaseWeapon weapon = item as BaseWeapon;

        CraftResource resource = clothing?.Resource ?? armor?.Resource ?? weapon?.Resource ?? CraftResource.None;

        if (!item.IsChildOf(from.Backpack))
        {
          from.SendLocalizedMessage(1042001); // That must be in your pack for you to use it.
          return;
        }

        if (item.LootType == LootType.Blessed)
        {
          from.SendMessage(
            "You can only use this on exceptionally crafted robes, thigh boots, cloaks, or leather gloves.");
          return;
        }

        if (resource != CraftResource.None && resource != CraftResource.RegularLeather)
        {
          from.SendLocalizedMessage(1049690); // Arcane gems can not be used on that type of leather.
          return;
        }

        int charges = GetChargesFor(from);

        if (eq.IsArcane)
        {
          if (eq.CurArcaneCharges >= eq.MaxArcaneCharges)
          {
            from.SendMessage("That item is already fully charged.");
          }
          else
          {
            if (eq.CurArcaneCharges <= 0)
              item.Hue = DefaultArcaneHue;

            if (eq.CurArcaneCharges + charges > eq.MaxArcaneCharges)
              eq.CurArcaneCharges = eq.MaxArcaneCharges;
            else
              eq.CurArcaneCharges += charges;

            from.SendMessage("You recharge the item.");
            if (Amount <= 1)
              Delete();
            else Amount--;
          }
        }
        else if (from.Skills.Tailoring.Value >= 80.0)
        {
          bool isExceptional = clothing?.Quality == ClothingQuality.Exceptional ||
                               armor?.Quality == ArmorQuality.Exceptional ||
                               weapon?.Quality == WeaponQuality.Exceptional;

          if (isExceptional)
          {
            if (clothing != null)
            {
              clothing.Quality = ClothingQuality.Regular;
              clothing.Crafter = from;
            }
            else if (armor != null)
            {
              armor.Quality = ArmorQuality.Regular;
              armor.Crafter = from;
              armor.PhysicalBonus =
                armor.FireBonus =
                  armor.ColdBonus =
                    armor.PoisonBonus = armor.EnergyBonus = 0; // Is there a method to remove bonuses?
            }
            else
            {
              weapon.Quality = WeaponQuality.Regular;
              weapon.Crafter = from;
            }

            eq.CurArcaneCharges = eq.MaxArcaneCharges = charges;

            item.Hue = DefaultArcaneHue;

            from.SendMessage("You enhance the item with your gem.");
            if (Amount <= 1)
              Delete();
            else Amount--;
          }
          else
          {
            from.SendMessage("Only exceptional items can be enhanced with the gem.");
          }
        }
        else
        {
          from.SendMessage("You do not have enough skill in tailoring to enhance the item.");
        }
      }
      else
      {
        from.SendMessage(
          "You can only use this on exceptionally crafted robes, thigh boots, cloaks, or leather gloves.");
      }
    }

    public static bool ConsumeCharges(Mobile from, int amount)
    {
      List<Item> items = from.Items;
      int avail = 0;

      for (int i = 0; i < items.Count; ++i)
      {
        Item obj = items[i];

        if (obj is IArcaneEquip eq && eq.IsArcane)
          avail += eq.CurArcaneCharges;
      }

      if (avail < amount)
        return false;

      for (int i = 0; i < items.Count; ++i)
      {
        Item obj = items[i];

        if (obj is IArcaneEquip eq && eq.IsArcane)
        {
          if (eq.CurArcaneCharges > amount)
          {
            eq.CurArcaneCharges -= amount;
            break;
          }

          amount -= eq.CurArcaneCharges;
          eq.CurArcaneCharges = 0;
        }
      }

      return true;
    }

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

      writer.Write(0);
    }

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

      int version = reader.ReadInt();
    }
  }
}