using System;
using System.IO;
using Server.Factions;
using Server.Mobiles;
using Server.Network;

namespace Server
{
  public abstract class PowerFactionItem : Item
  {
    private static WeightedItem[] _items =
    {
      new WeightedItem(30, typeof(GemOfEmpowerment)),
      new WeightedItem(25, typeof(BloodRose)),
      new WeightedItem(20, typeof(ClarityPotion)),
      new WeightedItem(15, typeof(UrnOfAscension)),
      new WeightedItem(10, typeof(StormsEye))
    };

    public PowerFactionItem(int itemId)
      : base(itemId)
    {
    }

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

    public abstract bool Use(Mobile mob);

    public static void CheckSpawn(Mobile killer, Mobile victim)
    {
      if (killer != null && victim != null)
      {
        PlayerState ps = PlayerState.Find(victim);

        if (ps != null)
        {
          int chance = ps.Rank.Rank;

          if (chance > Utility.Random(100))
          {
            int weight = 0;

            foreach (WeightedItem item in _items) weight += item.Weight;

            weight = Utility.Random(weight);

            foreach (WeightedItem item in _items)
            {
              if (weight < item.Weight)
              {
                Item obj = item.Construct();

                if (obj != null)
                {
                  killer.AddToBackpack(obj);

                  killer.SendSound(1470);
                  killer.LocalOverheadMessage(
                    MessageType.Regular, 2119, false,
                    "You notice a strange item on the corpse, and decide to pick it up."
                  );

                  try
                  {
                    using (StreamWriter op = new StreamWriter("faction-power-items.log", true))
                    {
                      op.WriteLine("{0}\t{1}\t{2}\t{3}", DateTime.UtcNow, killer, victim, obj);
                    }
                  }
                  catch
                  {
                    // ignored
                  }
                }

                break;
              }

              weight -= item.Weight;
            }
          }
        }
      }
    }

    public override void OnDoubleClick(Mobile from)
    {
      if (!IsChildOf(from.Backpack))
      {
        from.SendLocalizedMessage(1042038); // You must have the object in your backpack to use it.
      }
      else if (from is PlayerMobile mobile && mobile.DuelContext != null)
      {
        mobile.SendMessage("You can't use that.");
      }
      else if (Faction.Find(from) == null)
      {
        from.LocalOverheadMessage(MessageType.Regular, 2119, false,
          "The object vanishes from your hands as you touch it.");

        Timer.DelayCall(TimeSpan.FromSeconds(1.0),
          delegate
          {
            from.LocalOverheadMessage(MessageType.Regular, 2118, false,
              "You feel a strange tingling sensation throughout your body.");
          });

        Timer.DelayCall(TimeSpan.FromSeconds(4.0),
          delegate { from.LocalOverheadMessage(MessageType.Regular, 2118, false, "Your skin begins to burn."); });

        new DestructionTimer(from).Start();
        Delete();

        //from.SendMessage( "You must be in a faction to use this item." );
      }
      else if (Use(from))
      {
        from.RevealingAction();
        Consume();
      }
    }

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

      writer.WriteEncodedInt(0); // version
    }

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

      int version = reader.ReadEncodedInt();
    }

    private sealed class DestructionTimer : Timer
    {
      private Mobile _mobile;

      private bool _screamed;

      public DestructionTimer(Mobile mob)
        : base(TimeSpan.FromSeconds(5), TimeSpan.FromSeconds(0.1), 10)
      {
        _mobile = mob;
      }

      protected override void OnTick()
      {
        if (_mobile.Alive)
        {
          if (!_screamed)
          {
            _screamed = true;

            _mobile.PlaySound(_mobile.Female ? 814 : 1088);
            _mobile.PublicOverheadMessage(MessageType.Regular, 2118, false, "Aaaaah!");
          }

          _mobile.Damage(Utility.Dice(2, 6, 0));
        }
      }
    }

    private sealed class WeightedItem
    {
      public WeightedItem(int weight, Type type)
      {
        Weight = weight;
        Type = type;
      }

      public int Weight{ get; }

      public Type Type{ get; }

      public Item Construct()
      {
        return Activator.CreateInstance(Type) as Item;
      }
    }
  }
}