using System;
using System.Collections.Generic;
using Server.Gumps;
using Server.Multis;
using Server.Prompts;
using Server.Mobiles;
using Server.Network;
using Server.ContextMenus;

namespace Server.Items
{
  public class PlayerBBSouth : BasePlayerBB
  {
    public override int LabelNumber => 1062421; // bulletin board (south)

    [Constructible]
    public PlayerBBSouth() : base(0x2311) => Weight = 15.0;

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

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

      writer.Write(0); // version
    }

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

      int version = reader.ReadInt();
    }
  }

  public class PlayerBBEast : BasePlayerBB
  {
    public override int LabelNumber => 1062420; // bulletin board (east)

    [Constructible]
    public PlayerBBEast() : base(0x2312) => Weight = 15.0;

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

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

      writer.Write(0); // version
    }

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

      int version = reader.ReadInt();
    }
  }

  public abstract class BasePlayerBB : Item, ISecurable
  {
    public List<PlayerBBMessage> Messages { get; private set; }

    public PlayerBBMessage Greeting { get; set; }

    [CommandProperty(AccessLevel.GameMaster)]
    public string Title { get; set; }

    [CommandProperty(AccessLevel.GameMaster)]
    public SecureLevel Level { get; set; }

    public BasePlayerBB(int itemID) : base(itemID)
    {
      Messages = new List<PlayerBBMessage>();
      Level = SecureLevel.Anyone;
    }

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

    public override void GetContextMenuEntries(Mobile from, List<ContextMenuEntry> list)
    {
      base.GetContextMenuEntries(from, list);
      SetSecureLevelEntry.AddTo(from, this, list);
    }

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

      writer.Write(1);

      writer.Write((int)Level);

      writer.Write(Title);

      if (Greeting != null)
      {
        writer.Write(true);
        Greeting.Serialize(writer);
      }
      else
      {
        writer.Write(false);
      }

      writer.WriteEncodedInt(Messages.Count);

      for (int i = 0; i < Messages.Count; ++i)
        Messages[i].Serialize(writer);
    }

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

      int version = reader.ReadInt();

      switch (version)
      {
        case 1:
          {
            Level = (SecureLevel)reader.ReadInt();
            goto case 0;
          }
        case 0:
          {
            if (version < 1)
              Level = SecureLevel.Anyone;

            Title = reader.ReadString();

            if (reader.ReadBool())
              Greeting = new PlayerBBMessage(reader);

            int count = reader.ReadEncodedInt();

            Messages = new List<PlayerBBMessage>(count);

            for (int i = 0; i < count; ++i)
              Messages.Add(new PlayerBBMessage(reader));

            break;
          }
      }
    }

    public static bool CheckAccess(BaseHouse house, Mobile from)
    {
      if (house.Public || !house.IsAosRules)
        return !house.IsBanned(from);

      return house.HasAccess(from);
    }

    public override void OnDoubleClick(Mobile from)
    {
      BaseHouse house = BaseHouse.FindHouseAt(this);

      if (house?.HasLockedDownItem(this) != true)
        from.SendLocalizedMessage(1062396); // This bulletin board must be locked down in a house to be usable.
      else if (!from.InRange(GetWorldLocation(), 2) || !from.InLOS(this))
        from.LocalOverheadMessage(MessageType.Regular, 0x3B2, 1019045); // I can't reach that.
      else if (CheckAccess(house, from))
        from.SendGump(new PlayerBBGump(from, house, this, 0));
    }

    public class PostPrompt : Prompt
    {
      private readonly int m_Page;
      private readonly BaseHouse m_House;
      private readonly BasePlayerBB m_Board;
      private readonly bool m_Greeting;

      public PostPrompt(int page, BaseHouse house, BasePlayerBB board, bool greeting)
      {
        m_Page = page;
        m_House = house;
        m_Board = board;
        m_Greeting = greeting;
      }

      public override void OnCancel(Mobile from)
      {
        OnResponse(from, "");
      }

      public override void OnResponse(Mobile from, string text)
      {
        int page = m_Page;
        BaseHouse house = m_House;
        BasePlayerBB board = m_Board;

        if (house?.HasLockedDownItem(board) != true)
        {
          from.SendLocalizedMessage(1062396); // This bulletin board must be locked down in a house to be usable.
          return;
        }

        if (!from.InRange(board.GetWorldLocation(), 2) || !from.InLOS(board))
        {
          from.LocalOverheadMessage(MessageType.Regular, 0x3B2, 1019045); // I can't reach that.
          return;
        }
        if (!CheckAccess(house, from))
        {
          from.SendLocalizedMessage(1062398); // You are not allowed to post to this bulletin board.
          return;
        }
        if (m_Greeting && !house.IsOwner(from)) return;

        text = text.Trim();

        if (text.Length > 255)
          text = text.Substring(0, 255);

        if (text.Length > 0)
        {
          PlayerBBMessage message = new PlayerBBMessage(DateTime.UtcNow, from, text);

          if (m_Greeting)
          {
            board.Greeting = message;
          }
          else
          {
            board.Messages.Add(message);

            if (board.Messages.Count > 50)
            {
              board.Messages.RemoveAt(0);

              if (page > 0)
                --page;
            }
          }
        }

        from.SendGump(new PlayerBBGump(from, house, board, page));
      }
    }

    public class SetTitlePrompt : Prompt
    {
      private readonly int m_Page;
      private readonly BaseHouse m_House;
      private readonly BasePlayerBB m_Board;

      public SetTitlePrompt(int page, BaseHouse house, BasePlayerBB board)
      {
        m_Page = page;
        m_House = house;
        m_Board = board;
      }

      public override void OnCancel(Mobile from)
      {
        OnResponse(from, "");
      }

      public override void OnResponse(Mobile from, string text)
      {
        int page = m_Page;
        BaseHouse house = m_House;
        BasePlayerBB board = m_Board;

        if (house?.HasLockedDownItem(board) != true)
        {
          from.SendLocalizedMessage(1062396); // This bulletin board must be locked down in a house to be usable.
          return;
        }

        if (!from.InRange(board.GetWorldLocation(), 2) || !from.InLOS(board))
        {
          from.LocalOverheadMessage(MessageType.Regular, 0x3B2, 1019045); // I can't reach that.
          return;
        }
        if (!CheckAccess(house, from))
        {
          from.SendLocalizedMessage(1062398); // You are not allowed to post to this bulletin board.
          return;
        }

        text = text.Trim();

        if (text.Length > 255)
          text = text.Substring(0, 255);

        if (text.Length > 0)
          board.Title = text;

        from.SendGump(new PlayerBBGump(from, house, board, page));
      }
    }
  }

  public class PlayerBBMessage
  {
    [CommandProperty(AccessLevel.GameMaster)]
    public DateTime Time { get; set; }

    [CommandProperty(AccessLevel.GameMaster)]
    public Mobile Poster { get; set; }

    [CommandProperty(AccessLevel.GameMaster)]
    public string Message { get; set; }

    public PlayerBBMessage(DateTime time, Mobile poster, string message)
    {
      Time = time;
      Poster = poster;
      Message = message;
    }

    public PlayerBBMessage(IGenericReader reader)
    {
      int version = reader.ReadEncodedInt();

      switch (version)
      {
        case 0:
          {
            Time = reader.ReadDateTime();
            Poster = reader.ReadMobile();
            Message = reader.ReadString();
            break;
          }
      }
    }

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

      writer.Write(Time);
      writer.Write(Poster);
      writer.Write(Message);
    }
  }

  public class PlayerBBGump : Gump
  {
    private readonly int m_Page;
    private readonly Mobile m_From;
    private readonly BaseHouse m_House;
    private readonly BasePlayerBB m_Board;

    private const int LabelColor = 0x7FFF;
    private const int LabelHue = 1153;

    public override void OnResponse(NetState sender, RelayInfo info)
    {
      int page = m_Page;
      Mobile from = m_From;
      BaseHouse house = m_House;
      BasePlayerBB board = m_Board;

      if (house?.HasLockedDownItem(board) != true)
      {
        from.SendLocalizedMessage(1062396); // This bulletin board must be locked down in a house to be usable.
        return;
      }

      if (!from.InRange(board.GetWorldLocation(), 2) || !from.InLOS(board))
      {
        from.LocalOverheadMessage(MessageType.Regular, 0x3B2, 1019045); // I can't reach that.
        return;
      }
      if (!BasePlayerBB.CheckAccess(house, from))
      {
        from.SendLocalizedMessage(1062398); // You are not allowed to post to this bulletin board.
        return;
      }

      switch (info.ButtonID)
      {
        case 1: // Post message
          {
            from.Prompt = new BasePlayerBB.PostPrompt(page, house, board, false);
            from.SendLocalizedMessage(1062397); // Please enter your message:

            break;
          }
        case 2: // Set title
          {
            if (house.IsOwner(from))
            {
              from.Prompt = new BasePlayerBB.SetTitlePrompt(page, house, board);
              from.SendLocalizedMessage(1062402); // Enter new title:
            }

            break;
          }
        case 3: // Post greeting
          {
            if (house.IsOwner(from))
            {
              from.Prompt = new BasePlayerBB.PostPrompt(page, house, board, true);
              from.SendLocalizedMessage(1062404); // Enter new greeting (this will always be the first post):
            }

            break;
          }
        case 4: // Scroll up
          {
            if (page == 0)
              page = board.Messages.Count;
            else
              page -= 1;

            from.SendGump(new PlayerBBGump(from, house, board, page));

            break;
          }
        case 5: // Scroll down
          {
            page += 1;
            page %= board.Messages.Count + 1;

            from.SendGump(new PlayerBBGump(from, house, board, page));

            break;
          }
        case 6: // Banish poster
          {
            if (house.IsOwner(from))
            {
              if (page >= 1 && page <= board.Messages.Count)
              {
                PlayerBBMessage message = board.Messages[page - 1];
                Mobile poster = message.Poster;

                if (poster == null)
                {
                  from.SendGump(new PlayerBBGump(from, house, board, page));
                  return;
                }

                if (poster.AccessLevel > AccessLevel.Player && from.AccessLevel <= poster.AccessLevel)
                {
                  from.SendLocalizedMessage(501354); // Uh oh...a bigger boot may be required.
                }
                else if (house.IsFriend(poster))
                {
                  from.SendLocalizedMessage(1060750); // That person is a friend, co-owner, or owner of this house, and therefore cannot be banished!
                }
                else if (poster is PlayerVendor)
                {
                  from.SendLocalizedMessage(501351); // You cannot eject a vendor.
                }
                else if (house.Bans.Count >= BaseHouse.MaxBans)
                {
                  from.SendLocalizedMessage(501355); // The ban limit for this house has been reached!
                }
                else if (house.IsBanned(poster))
                {
                  from.SendLocalizedMessage(501356); // This person is already banned!
                }
                else if (poster is BaseCreature creature && creature.NoHouseRestrictions)
                {
                  from.SendLocalizedMessage(1062040); // You cannot ban that.
                }
                else
                {
                  if (!house.Bans.Contains(poster))
                    house.Bans.Add(poster);

                  from.SendLocalizedMessage(1062417); // That person has been banned from this house.

                  if (house.IsInside(poster) && !BasePlayerBB.CheckAccess(house, poster))
                    poster.MoveToWorld(house.BanLocation, house.Map);
                }
              }

              from.SendGump(new PlayerBBGump(from, house, board, page));
            }

            break;
          }
        case 7: // Delete message
          {
            if (house.IsOwner(from))
            {
              if (page >= 1 && page <= board.Messages.Count)
                board.Messages.RemoveAt(page - 1);

              from.SendGump(new PlayerBBGump(from, house, board, 0));
            }

            break;
          }
        case 8: // Post props
          {
            if (from.AccessLevel >= AccessLevel.GameMaster)
            {
              PlayerBBMessage message = board.Greeting;

              if (page >= 1 && page <= board.Messages.Count)
                message = board.Messages[page - 1];

              from.SendGump(new PlayerBBGump(from, house, board, page));
              from.SendGump(new PropertiesGump(from, message));
            }

            break;
          }
      }
    }

    public PlayerBBGump(Mobile from, BaseHouse house, BasePlayerBB board, int page) : base(50, 10)
    {
      from.CloseGump<PlayerBBGump>();

      m_Page = page;
      m_From = from;
      m_House = house;
      m_Board = board;

      AddPage(0);

      AddImage(30, 30, 5400);

      AddButton(393, 145, 2084, 2084, 4); // Scroll up
      AddButton(390, 371, 2085, 2085, 5); // Scroll down

      AddButton(32, 183, 5412, 5413, 1); // Post message

      if (house.IsOwner(from))
      {
        AddButton(63, 90, 5601, 5605, 2);
        AddHtmlLocalized(81, 89, 230, 20, 1062400, LabelColor); // Set title

        AddButton(63, 109, 5601, 5605, 3);
        AddHtmlLocalized(81, 108, 230, 20, 1062401, LabelColor); // Post greeting
      }

      string title = board.Title;

      if (title != null)
        AddHtml(183, 68, 180, 23, title);

      AddHtmlLocalized(385, 89, 60, 20, 1062409, LabelColor); // Post

      AddLabel(440, 89, LabelHue, page.ToString());
      AddLabel(455, 89, LabelHue, "/");
      AddLabel(470, 89, LabelHue, board.Messages.Count.ToString());

      PlayerBBMessage message = board.Greeting;

      if (page >= 1 && page <= board.Messages.Count)
        message = board.Messages[page - 1];

      AddImageTiled(150, 220, 240, 1, 2700); // Separator

      AddHtmlLocalized(150, 180, 100, 20, 1062405, 16715); // Posted On:
      AddHtmlLocalized(150, 200, 100, 20, 1062406, 16715); // Posted By:

      if (message != null)
      {
        AddHtml(255, 180, 150, 20, message.Time.ToString("yyyy-MM-dd HH:mm:ss"));

        Mobile poster = message.Poster;
        string name = poster?.Name;

        if (name == null || (name = name.Trim()).Length == 0)
          name = "Someone";

        AddHtml(255, 200, 150, 20, name);

        AddHtml(150, 240, 250, 100, message.Message ?? "");

        if (message != board.Greeting && house.IsOwner(from))
        {
          AddButton(130, 395, 1209, 1210, 6);
          AddHtmlLocalized(150, 393, 150, 20, 1062410, LabelColor); // Banish Poster

          AddButton(310, 395, 1209, 1210, 7);
          AddHtmlLocalized(330, 393, 150, 20, 1062411, LabelColor); // Delete Message
        }

        if (from.AccessLevel >= AccessLevel.GameMaster)
          AddButton(135, 242, 1209, 1210, 8); // Post props
      }
    }
  }
}