using System;
using System.Collections.Generic;
using Server.Items;
using Server.Mobiles;
using Server.Network;

namespace Server.Engines.MLQuests.Items
{
  public abstract class QuestGiverItem : Item, IQuestGiver
  {
    private List<MLQuest> m_MLQuests;

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

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

    public bool CanGiveMLQuest => MLQuests.Count != 0;

    public override bool Nontransferable => true;

    public List<MLQuest> MLQuests => m_MLQuests ??
                                     (m_MLQuests = MLQuestSystem.FindQuestList(GetType()) ?? MLQuestSystem.EmptyList);

    public override void AddNameProperties(ObjectPropertyList list)
    {
      base.AddNameProperties(list);

      AddQuestItemProperty(list);

      if (CanGiveMLQuest)
        list.Add(1072269); // Quest Giver
    }

    public override void OnDoubleClick(Mobile from)
    {
      if (!from.InRange(GetWorldLocation(), 2))
        from.LocalOverheadMessage(MessageType.Regular, 0x3B2, 1019045); // I can't reach that.
      else if (!IsChildOf(from.Backpack))
        from.SendLocalizedMessage(1042593); // That is not in your backpack.
      else if (MLQuestSystem.Enabled && CanGiveMLQuest && from is PlayerMobile mobile)
        MLQuestSystem.OnDoubleClick(this, mobile);
    }

    public override void OnAfterDelete()
    {
      base.OnAfterDelete();

      if (MLQuestSystem.Enabled)
        MLQuestSystem.HandleDeletion(this);
    }

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

      writer.Write(0); // version
    }

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

      int version = reader.ReadInt();
    }
  }

  public abstract class TransientQuestGiverItem : TransientItem, IQuestGiver
  {
    private List<MLQuest> m_MLQuests;

    public TransientQuestGiverItem(int itemId, TimeSpan lifeSpan)
      : base(itemId, lifeSpan)
    {
    }

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

    public bool CanGiveMLQuest => MLQuests.Count != 0;

    public override bool Nontransferable => true;

    public List<MLQuest> MLQuests => m_MLQuests ??
                                     (m_MLQuests = MLQuestSystem.FindQuestList(GetType()) ?? MLQuestSystem.EmptyList);

    public override void HandleInvalidTransfer(Mobile from)
    {
    }

    public override void AddNameProperties(ObjectPropertyList list)
    {
      base.AddNameProperties(list);

      AddQuestItemProperty(list);

      if (CanGiveMLQuest)
        list.Add(1072269); // Quest Giver
    }

    public override void OnDoubleClick(Mobile from)
    {
      if (!from.InRange(GetWorldLocation(), 2))
        from.LocalOverheadMessage(MessageType.Regular, 0x3B2, 1019045); // I can't reach that.
      else if (!IsChildOf(from.Backpack))
        from.SendLocalizedMessage(1042593); // That is not in your backpack.
      else if (MLQuestSystem.Enabled && CanGiveMLQuest && from is PlayerMobile mobile)
        MLQuestSystem.OnDoubleClick(this, mobile);
    }

    public override void OnAfterDelete()
    {
      base.OnAfterDelete();

      if (MLQuestSystem.Enabled)
        MLQuestSystem.HandleDeletion(this);
    }

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

      writer.Write(0); // version
    }

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

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