using System.Collections.Generic;
using Server.Gumps;
using Server.Network;

namespace Server.Engines.Quests
{
  public abstract class QuestConversation
  {
    public abstract object Message { get; }

    public virtual QuestItemInfo[] Info => null;
    public virtual bool Logged => true;

    public QuestSystem System { get; set; }

    public bool HasBeenRead { get; set; }

    public virtual void BaseDeserialize(IGenericReader reader)
    {
      int version = reader.ReadEncodedInt();

      switch (version)
      {
        case 0:
          {
            HasBeenRead = reader.ReadBool();

            break;
          }
      }

      ChildDeserialize(reader);
    }

    public virtual void ChildDeserialize(IGenericReader reader)
    {
      int version = reader.ReadEncodedInt();
    }

    public virtual void BaseSerialize(IGenericWriter writer)
    {
      writer.WriteEncodedInt(0); // version

      writer.Write(HasBeenRead);

      ChildSerialize(writer);
    }

    public virtual void ChildSerialize(IGenericWriter writer)
    {
      writer.WriteEncodedInt(0); // version
    }

    public virtual void OnRead()
    {
    }
  }

  public class QuestConversationsGump : BaseQuestGump
  {
    private readonly List<QuestConversation> m_Conversations;

    public QuestConversationsGump(QuestConversation conv) : this(new List<QuestConversation> { conv })
    {
    }

    public QuestConversationsGump(List<QuestConversation> conversations) : base(30, 50)
    {
      m_Conversations = conversations;

      Closable = false;

      AddPage(0);

      AddImage(349, 10, 9392);
      AddImageTiled(349, 130, 100, 120, 9395);
      AddImageTiled(149, 10, 200, 140, 9391);
      AddImageTiled(149, 250, 200, 140, 9397);
      AddImage(349, 250, 9398);
      AddImage(35, 10, 9390);
      AddImageTiled(35, 150, 120, 100, 9393);
      AddImage(35, 250, 9396);

      AddHtmlLocalized(110, 60, 200, 20, 1049069, White); // <STRONG>Conversation Event</STRONG>

      AddImage(65, 14, 10102);
      AddImageTiled(81, 14, 349, 17, 10101);
      AddImage(426, 14, 10104);

      AddImageTiled(55, 40, 388, 323, 2624);
      AddAlphaRegion(55, 40, 388, 323);

      AddImageTiled(75, 90, 200, 1, 9101);
      AddImage(75, 58, 9781);
      AddImage(380, 45, 223);

      AddButton(220, 335, 2313, 2312, 1);
      AddImage(0, 0, 10440);

      AddPage(1);

      for (int i = 0; i < conversations.Count; ++i)
      {
        QuestConversation conv = conversations[conversations.Count - 1 - i];

        if (i > 0)
        {
          AddButton(65, 366, 9909, 9911, 0, GumpButtonType.Page, 1 + i);
          AddHtmlLocalized(90, 367, 50, 20, 1043354, Black); // Previous

          AddPage(1 + i);
        }

        AddHtmlObject(70, 110, 365, 220, conv.Message, LightGreen, false, true);

        if (i > 0)
        {
          AddButton(420, 366, 9903, 9905, 0, GumpButtonType.Page, i);
          AddHtmlLocalized(370, 367, 50, 20, 1043353, Black); // Next
        }
      }
    }

    public override void OnResponse(NetState sender, RelayInfo info)
    {
      for (int i = m_Conversations.Count - 1; i >= 0; --i)
      {
        QuestConversation qc = m_Conversations[i];

        if (!qc.HasBeenRead)
        {
          qc.HasBeenRead = true;
          qc.OnRead();
        }
      }
    }
  }
}