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

namespace Server.Gumps
{
public class WhoGump : Gump
{
public static void Initialize()
{
CommandSystem.Register( "Who", AccessLevel.Counselor, new CommandEventHandler( WhoList_OnCommand ) );
CommandSystem.Register( "WhoList", AccessLevel.Counselor, new CommandEventHandler( WhoList_OnCommand ) );
}

[Usage( "WhoList [filter]" )]
[Aliases( "Who" )]
[Description( "Lists all connected clients. Optionally filters results by name." )]
private static void WhoList_OnCommand( CommandEventArgs e )
{
e.Mobile.SendGump( new WhoGump( e.Mobile, e.ArgString ) );
}

public static bool OldStyle = PropsConfig.OldStyle;

public static readonly int GumpOffsetX = PropsConfig.GumpOffsetX;
public static readonly int GumpOffsetY = PropsConfig.GumpOffsetY;

public static readonly int TextHue = PropsConfig.TextHue;
public static readonly int TextOffsetX = PropsConfig.TextOffsetX;

public static readonly int OffsetGumpID = PropsConfig.OffsetGumpID;
public static readonly int HeaderGumpID = PropsConfig.HeaderGumpID;
public static readonly int  EntryGumpID = PropsConfig.EntryGumpID;
public static readonly int   BackGumpID = PropsConfig.BackGumpID;
public static readonly int    SetGumpID = PropsConfig.SetGumpID;

public static readonly int SetWidth = PropsConfig.SetWidth;
public static readonly int SetOffsetX = PropsConfig.SetOffsetX, SetOffsetY = PropsConfig.SetOffsetY;
public static readonly int SetButtonID1 = PropsConfig.SetButtonID1;
public static readonly int SetButtonID2 = PropsConfig.SetButtonID2;

public static readonly int PrevWidth = PropsConfig.PrevWidth;
public static readonly int PrevOffsetX = PropsConfig.PrevOffsetX, PrevOffsetY = PropsConfig.PrevOffsetY;
public static readonly int PrevButtonID1 = PropsConfig.PrevButtonID1;
public static readonly int PrevButtonID2 = PropsConfig.PrevButtonID2;

public static readonly int NextWidth = PropsConfig.NextWidth;
public static readonly int NextOffsetX = PropsConfig.NextOffsetX, NextOffsetY = PropsConfig.NextOffsetY;
public static readonly int NextButtonID1 = PropsConfig.NextButtonID1;
public static readonly int NextButtonID2 = PropsConfig.NextButtonID2;

public static readonly int OffsetSize = PropsConfig.OffsetSize;

public static readonly int EntryHeight = PropsConfig.EntryHeight;
public static readonly int BorderSize = PropsConfig.BorderSize;

private static bool PrevLabel = false, NextLabel = false;

private static readonly int PrevLabelOffsetX = PrevWidth + 1;
private static readonly int PrevLabelOffsetY = 0;

private static readonly int NextLabelOffsetX = -29;
private static readonly int NextLabelOffsetY = 0;

private static readonly int EntryWidth = 180;
private static readonly int EntryCount = 15;

private static readonly int TotalWidth = OffsetSize + EntryWidth + OffsetSize + SetWidth + OffsetSize;
private static readonly int TotalHeight = OffsetSize + ((EntryHeight + OffsetSize) * (EntryCount + 1));

private static readonly int BackWidth = BorderSize + TotalWidth + BorderSize;
private static readonly int BackHeight = BorderSize + TotalHeight + BorderSize;

private Mobile m_Owner;
private List<Mobile> m_Mobiles;
private int m_Page;

private class InternalComparer : IComparer<Mobile>
{
public static readonly IComparer<Mobile> Instance = new InternalComparer();

public InternalComparer()
{
}

public int Compare( Mobile x, Mobile y )
{
if ( x == null || y == null )
throw new ArgumentException();

if ( x.AccessLevel > y.AccessLevel )
return -1;
else if ( x.AccessLevel < y.AccessLevel )
return 1;
else
return Insensitive.Compare( x.Name, y.Name );
}
}

public WhoGump( Mobile owner, string filter ) : this( owner, BuildList( owner, filter ), 0 )
{
}

public WhoGump( Mobile owner, List<Mobile> list, int page ) : base( GumpOffsetX, GumpOffsetY )
{
owner.CloseGump( typeof( WhoGump ) );

m_Owner = owner;
m_Mobiles = list;

Initialize( page );
}

public static List<Mobile> BuildList( Mobile owner, string filter )
{
if ( filter != null && (filter = filter.Trim()).Length == 0 )
filter = null;
else
filter = filter.ToLower();

List<Mobile> list = new List<Mobile>();
List<NetState> states = NetState.Instances;

for ( int i = 0; i < states.Count; ++i )
{
Mobile m = states[i].Mobile;

if ( m != null && (m == owner || !m.Hidden || owner.AccessLevel > m.AccessLevel || (m is PlayerMobile && ((PlayerMobile)m).VisibilityList.Contains( owner ) ) ) )
{
if ( filter != null && ( m.Name == null || m.Name.ToLower().IndexOf( filter ) < 0 ) )
continue;

list.Add( m );
}
}

list.Sort( InternalComparer.Instance );

return list;
}

public void Initialize( int page )
{
m_Page = page;

int count = m_Mobiles.Count - (page * EntryCount);

if ( count < 0 )
count = 0;
else if ( count > EntryCount )
count = EntryCount;

int totalHeight = OffsetSize + ((EntryHeight + OffsetSize) * (count + 1));

AddPage( 0 );

AddBackground( 0, 0, BackWidth, BorderSize + totalHeight + BorderSize, BackGumpID );
AddImageTiled( BorderSize, BorderSize, TotalWidth - (OldStyle ? SetWidth + OffsetSize : 0), totalHeight, OffsetGumpID );

int x = BorderSize + OffsetSize;
int y = BorderSize + OffsetSize;

int emptyWidth = TotalWidth - PrevWidth - NextWidth - (OffsetSize * 4) - (OldStyle ? SetWidth + OffsetSize : 0);

if ( !OldStyle )
AddImageTiled( x - (OldStyle ? OffsetSize : 0), y, emptyWidth + (OldStyle ? OffsetSize * 2 : 0), EntryHeight, EntryGumpID );

AddLabel( x + TextOffsetX, y, TextHue, String.Format( "Page {0} of {1} ({2})", page+1, (m_Mobiles.Count + EntryCount - 1) / EntryCount, m_Mobiles.Count ) );

x += emptyWidth + OffsetSize;

if ( OldStyle )
AddImageTiled( x, y, TotalWidth - (OffsetSize * 3) - SetWidth, EntryHeight, HeaderGumpID );
else
AddImageTiled( x, y, PrevWidth, EntryHeight, HeaderGumpID );

if ( page > 0 )
{
AddButton( x + PrevOffsetX, y + PrevOffsetY, PrevButtonID1, PrevButtonID2, 1, GumpButtonType.Reply, 0 );

if ( PrevLabel )
AddLabel( x + PrevLabelOffsetX, y + PrevLabelOffsetY, TextHue, "Previous" );
}

x += PrevWidth + OffsetSize;

if ( !OldStyle )
AddImageTiled( x, y, NextWidth, EntryHeight, HeaderGumpID );

if ( (page + 1) * EntryCount < m_Mobiles.Count )
{
AddButton( x + NextOffsetX, y + NextOffsetY, NextButtonID1, NextButtonID2, 2, GumpButtonType.Reply, 1 );

if ( NextLabel )
AddLabel( x + NextLabelOffsetX, y + NextLabelOffsetY, TextHue, "Next" );
}

for ( int i = 0, index = page * EntryCount; i < EntryCount && index < m_Mobiles.Count; ++i, ++index )
{
x = BorderSize + OffsetSize;
y += EntryHeight + OffsetSize;

Mobile m = m_Mobiles[index];

AddImageTiled( x, y, EntryWidth, EntryHeight, EntryGumpID );
AddLabelCropped( x + TextOffsetX, y, EntryWidth - TextOffsetX, EntryHeight, GetHueFor( m ), m.Deleted ? "(deleted)" : m.Name );

x += EntryWidth + OffsetSize;

if ( SetGumpID != 0 )
AddImageTiled( x, y, SetWidth, EntryHeight, SetGumpID );

if ( m.NetState != null && !m.Deleted )
AddButton( x + SetOffsetX, y + SetOffsetY, SetButtonID1, SetButtonID2, i + 3, GumpButtonType.Reply, 0 );
}
}

private static int GetHueFor( Mobile m )
{
switch ( m.AccessLevel )
{
case AccessLevel.Owner:
case AccessLevel.Developer:
case AccessLevel.Administrator: return 0x516;
case AccessLevel.Seer: return 0x144;
case AccessLevel.GameMaster: return 0x21;
case AccessLevel.Counselor: return 0x2;
case AccessLevel.Player: default:
{
if ( m.Kills >= 5 )
return 0x21;
else if ( m.Criminal )
return 0x3B1;

return 0x58;
}
}
}

public override void OnResponse( NetState state, RelayInfo info )
{
Mobile from = state.Mobile;

switch ( info.ButtonID )
{
case 0: // Closed
{
return;
}
case 1: // Previous
{
if ( m_Page > 0 )
from.SendGump( new WhoGump( from, m_Mobiles, m_Page - 1 ) );

break;
}
case 2: // Next
{
if ( (m_Page + 1) * EntryCount < m_Mobiles.Count )
from.SendGump( new WhoGump( from, m_Mobiles, m_Page + 1 ) );

break;
}
default:
{
int index = (m_Page * EntryCount) + (info.ButtonID - 3);

if ( index >= 0 && index < m_Mobiles.Count )
{
Mobile m = m_Mobiles[index];

if ( m.Deleted )
{
from.SendMessage( "That player has deleted their character." );
from.SendGump( new WhoGump( from, m_Mobiles, m_Page ) );
}
else if ( m.NetState == null )
{
from.SendMessage( "That player is no longer online." );
from.SendGump( new WhoGump( from, m_Mobiles, m_Page ) );
}
else if ( m == from || !m.Hidden || from.AccessLevel > m.AccessLevel || (m is PlayerMobile && ((PlayerMobile)m).VisibilityList.Contains( from )))
{
from.SendGump( new ClientGump( from, m.NetState ) );
}
else
{
from.SendMessage( "You cannot see them." );
from.SendGump( new WhoGump( from, m_Mobiles, m_Page ) );
}
}

break;
}
}
}
}
}