ModernUO/Projects/Scripts/Engines/Help/PageQueue.cs

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

namespace Server.Engines.Help
{
  public enum PageType
  {
    Bug,
    Stuck,
    Account,
    Question,
    Suggestion,
    Other,
    VerbalHarassment,
    PhysicalHarassment
  }

  public class PageEntry
  {
    // What page types should have a speech log as attachment?
    public static readonly PageType[] SpeechLogAttachment =
    {
      PageType.VerbalHarassment
    };

    private Mobile m_Handler;

    private Timer m_Timer;

    public PageEntry(Mobile sender, string message, PageType type)
    {
      Sender = sender;
      Sent = DateTime.UtcNow;
      Message = Utility.FixHtml(message);
      Type = type;
      PageLocation = sender.Location;
      PageMap = sender.Map;

      if (sender is PlayerMobile pm && pm.SpeechLog != null && Array.IndexOf(SpeechLogAttachment, type) >= 0)
        SpeechLog = new List<SpeechLogEntry>(pm.SpeechLog);

      m_Timer = new InternalTimer(this);
      m_Timer.Start();
    }

    public Mobile Sender { get; }

    public Mobile Handler
    {
      get => m_Handler;
      set
      {
        PageQueue.OnHandlerChanged(m_Handler, value, this);
        m_Handler = value;
      }
    }

    public DateTime Sent { get; }

    public string Message { get; }

    public PageType Type { get; }

    public Point3D PageLocation { get; }

    public Map PageMap { get; }

    public List<SpeechLogEntry> SpeechLog { get; }

    public void Stop()
    {
      m_Timer?.Stop();

      m_Timer = null;
    }

    private class InternalTimer : Timer
    {
      private static readonly TimeSpan StatusDelay = TimeSpan.FromMinutes(2.0);

      private readonly PageEntry m_Entry;

      public InternalTimer(PageEntry entry) : base(TimeSpan.FromSeconds(1.0), StatusDelay) => m_Entry = entry;

      protected override void OnTick()
      {
        int index = PageQueue.IndexOf(m_Entry);

        if (m_Entry.Sender.NetState != null && index != -1)
        {
          m_Entry.Sender.SendLocalizedMessage(1008077, true,
            (index + 1).ToString()); // Thank you for paging. Queue status :
          m_Entry.Sender
            .SendLocalizedMessage(
              1008084); // You can reference our website at www.uo.com or contact us at support@uo.com. To cancel your page, please select the help button again and select cancel.

          if (m_Entry.Handler != null && m_Entry.Handler.NetState == null) m_Entry.Handler = null;
        }
        else
        {
          if (index != -1)
            // m_Entry.AddResponse(m_Entry.Sender, "[Logout]");

            PageQueue.Remove(m_Entry);
        }
      }
    }
  }

  public class PageQueue
  {
    private static readonly Dictionary<Mobile, PageEntry> m_KeyedByHandler = new Dictionary<Mobile, PageEntry>();
    private static readonly Dictionary<Mobile, PageEntry> m_KeyedBySender = new Dictionary<Mobile, PageEntry>();

    public static List<PageEntry> List { get; } = new List<PageEntry>();

    public static void Initialize()
    {
      CommandSystem.Register("Pages", AccessLevel.Counselor, Pages_OnCommand);
    }

    public static bool CheckAllowedToPage(Mobile from)
    {
      if (!(from is PlayerMobile pm))
        return true;

      if (pm.DesignContext != null)
      {
        from.SendLocalizedMessage(
          500182); // You cannot request help while customizing a house or transferring a character.
        return false;
      }

      if (pm.PagingSquelched)
      {
        from.SendMessage("You cannot request help, sorry.");
        return false;
      }

      return true;
    }

    public static string GetPageTypeName(PageType type)
    {
      if (type == PageType.VerbalHarassment)
        return "Verbal Harassment";
      if (type == PageType.PhysicalHarassment)
        return "Physical Harassment";
      return type.ToString();
    }

    public static void OnHandlerChanged(Mobile old, Mobile value, PageEntry entry)
    {
      if (old != null)
        m_KeyedByHandler.Remove(old);

      if (value != null)
        m_KeyedByHandler[value] = entry;
    }

    [Usage("Pages")]
    [Description("Opens the page queue menu.")]
    private static void Pages_OnCommand(CommandEventArgs e)
    {
      if (m_KeyedByHandler.TryGetValue(e.Mobile, out PageEntry entry))
        e.Mobile.SendGump(new PageEntryGump(e.Mobile, entry));
      else if (List.Count > 0)
        e.Mobile.SendGump(new PageQueueGump());
      else
        e.Mobile.SendMessage("The page queue is empty.");
    }

    public static bool IsHandling(Mobile check) => m_KeyedByHandler.ContainsKey(check);

    public static bool Contains(Mobile sender) => m_KeyedBySender.ContainsKey(sender);

    public static int IndexOf(PageEntry e) => List.IndexOf(e);

    public static void Remove(PageEntry e)
    {
      if (e == null)
        return;

      e.Stop();

      List.Remove(e);
      m_KeyedBySender.Remove(e.Sender);

      if (e.Handler != null)
        m_KeyedByHandler.Remove(e.Handler);
    }

    public static PageEntry GetEntry(Mobile sender)
    {
      m_KeyedBySender.TryGetValue(sender, out PageEntry entry);
      return entry;
    }

    public static void Remove(Mobile sender)
    {
      Remove(GetEntry(sender));
    }

    public static void Enqueue(PageEntry entry)
    {
      List.Add(entry);
      m_KeyedBySender[entry.Sender] = entry;

      bool isStaffOnline = false;

      foreach (NetState ns in TcpServer.Instances)
      {
        Mobile m = ns.Mobile;

        if (m?.AccessLevel >= AccessLevel.Counselor && m.AutoPageNotify && !IsHandling(m))
          m.SendMessage("A new page has been placed in the queue.");

        if (m?.AccessLevel >= AccessLevel.Counselor && m.AutoPageNotify &&
            Core.TickCount - m.LastMoveTime < 600000)
          isStaffOnline = true;
      }

      if (!isStaffOnline)
        entry.Sender.SendMessage(
          "We are sorry, but no staff members are currently available to assist you.  Your page will remain in the queue until one becomes available, or until you cancel it manually.");

      if (Email.FROM_ADDRESS != null && Email.SPEECH_LOG_PAGE_ADDRESS != null && entry.SpeechLog != null)
        Email.SendQueueEmail(entry, GetPageTypeName(entry.Type));
    }
  }
}