using System;
using System.IO;
using System.Xml;
using System.Collections;
using Server.Network;
using Server.Commands;

namespace Server.Gumps
{
public abstract class CAGNode
{
public abstract string Caption{ get; }
public abstract void OnClick( Mobile from, int page );
}

public class CAGObject : CAGNode
{
private Type m_Type;
private int m_ItemID;
private int m_Hue;
private CAGCategory m_Parent;

public Type Type{ get{ return m_Type; } }
public int ItemID{ get{ return m_ItemID; } }
public int Hue{ get{ return m_Hue; } }
public CAGCategory Parent{ get{ return m_Parent; } }

public override string Caption{ get{ return ( m_Type == null ? "bad type" : m_Type.Name ); } }

public override void OnClick( Mobile from, int page )
{
if ( m_Type == null )
{
from.SendMessage( "That is an invalid type name." );
}
else
{
CommandSystem.Handle( from, String.Format( "{0}Add {1}", CommandSystem.Prefix, m_Type.Name ) );

from.SendGump( new CategorizedAddGump( from, m_Parent, page ) );
}
}

public CAGObject( CAGCategory parent, XmlTextReader xml )
{
m_Parent = parent;

if ( xml.MoveToAttribute( "type" ) )
m_Type = ScriptCompiler.FindTypeByFullName( xml.Value, false );

if ( xml.MoveToAttribute( "gfx" ) )
m_ItemID = XmlConvert.ToInt32( xml.Value );

if ( xml.MoveToAttribute( "hue" ) )
m_Hue = XmlConvert.ToInt32( xml.Value );
}
}

public class CAGCategory : CAGNode
{
private string m_Title;
private CAGNode[] m_Nodes;
private CAGCategory m_Parent;

public string Title{ get{ return m_Title; } }
public CAGNode[] Nodes{ get{ return m_Nodes; } }
public CAGCategory Parent{ get{ return m_Parent; } }

public override string Caption{ get{ return m_Title; } }

public override void OnClick( Mobile from, int page )
{
from.SendGump( new CategorizedAddGump( from, this, 0 ) );
}

private CAGCategory()
{
m_Title = "no data";
m_Nodes = new CAGNode[0];
}

public CAGCategory( CAGCategory parent, XmlTextReader xml )
{
m_Parent = parent;

if ( xml.MoveToAttribute( "title" ) )
m_Title = xml.Value;
else
m_Title = "empty";

if ( m_Title == "Docked" )
m_Title = "Docked 2";

if ( xml.IsEmptyElement )
{
m_Nodes = new CAGNode[0];
}
else
{
ArrayList nodes = new ArrayList();

while ( xml.Read() && xml.NodeType != XmlNodeType.EndElement )
{
if ( xml.NodeType == XmlNodeType.Element && xml.Name == "object" )
nodes.Add( new CAGObject( this, xml ) );
else if ( xml.NodeType == XmlNodeType.Element && xml.Name == "category" )
{
if( !xml.IsEmptyElement )
nodes.Add( new CAGCategory( this, xml ) );
}
else
xml.Skip();
}

m_Nodes = (CAGNode[])nodes.ToArray( typeof( CAGNode ) );
}
}

private static CAGCategory m_Root;

public static CAGCategory Root
{
get
{
if ( m_Root == null )
m_Root = Load( "Data/objects.xml" );

return m_Root;
}
}

public static CAGCategory Load( string path )
{
if ( File.Exists( path ) )
{
XmlTextReader xml = new XmlTextReader( path );

xml.WhitespaceHandling = WhitespaceHandling.None;

while ( xml.Read() )
{
if ( xml.Name == "category" && xml.NodeType == XmlNodeType.Element )
{
CAGCategory cat = new CAGCategory( null, xml );

xml.Close();

return cat;
}
}
}

return new CAGCategory();
}
}

public class CategorizedAddGump : Gump
{
public static bool OldStyle = PropsConfig.OldStyle;

public static readonly int EntryHeight = 24;//PropsConfig.EntryHeight;

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

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 + (((EntryHeight - 20) / 2) / 2);
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 + (((EntryHeight - 20) / 2) / 2);
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 + (((EntryHeight - 20) / 2) / 2);
public static readonly int NextButtonID1 = PropsConfig.NextButtonID1;
public static readonly int NextButtonID2 = PropsConfig.NextButtonID2;

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 CAGCategory m_Category;
private int m_Page;

public CategorizedAddGump( Mobile owner ) : this( owner, CAGCategory.Root, 0 )
{
}

public CategorizedAddGump( Mobile owner, CAGCategory category, int page ) : base( GumpOffsetX, GumpOffsetY )
{
owner.CloseGump( typeof( WhoGump ) );

m_Owner = owner;
m_Category = category;

Initialize( page );
}

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

CAGNode[] nodes = m_Category.Nodes;

int count = nodes.Length - (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;

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

if ( m_Category.Parent != null )
{
AddButton( x + PrevOffsetX, y + PrevOffsetY, PrevButtonID1, PrevButtonID2, 1, GumpButtonType.Reply, 0 );

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

x += PrevWidth + OffsetSize;

int emptyWidth = TotalWidth - (PrevWidth * 2) - NextWidth - (OffsetSize * 5) - (OldStyle ? SetWidth + OffsetSize : 0);

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

AddHtml( x + TextOffsetX, y + ((EntryHeight - 20) / 2), emptyWidth - TextOffsetX, EntryHeight, String.Format( "<center>{0}</center>", m_Category.Caption ), false, false );

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, 2, 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 < nodes.Length )
{
AddButton( x + NextOffsetX, y + NextOffsetY, NextButtonID1, NextButtonID2, 3, GumpButtonType.Reply, 1 );

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

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

CAGNode node = nodes[index];

AddImageTiled( x, y, EntryWidth, EntryHeight, EntryGumpID );
AddLabelCropped( x + TextOffsetX, y + ((EntryHeight - 20) / 2), EntryWidth - TextOffsetX, EntryHeight, TextHue, node.Caption );

x += EntryWidth + OffsetSize;

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

AddButton( x + SetOffsetX, y + SetOffsetY, SetButtonID1, SetButtonID2, i + 4, GumpButtonType.Reply, 0 );

if ( node is CAGObject )
{
CAGObject obj = (CAGObject)node;
int itemID = obj.ItemID;

Rectangle2D bounds = ItemBounds.Table[itemID];

if ( itemID != 1 && bounds.Height < (EntryHeight * 2) )
{
if ( bounds.Height < EntryHeight )
AddItem( x - OffsetSize - 22 - ((i % 2) * 44) - (bounds.Width / 2) - bounds.X, y + (EntryHeight / 2) - (bounds.Height / 2) - bounds.Y, itemID );
else
AddItem( x - OffsetSize - 22 - ((i % 2) * 44) - (bounds.Width / 2) - bounds.X, y + EntryHeight - 1 - bounds.Height - bounds.Y, itemID );
}
}
}
}

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

switch ( info.ButtonID )
{
case 0: // Closed
{
return;
}
case 1: // Up
{
if ( m_Category.Parent != null )
{
int index = Array.IndexOf( m_Category.Parent.Nodes, m_Category ) / EntryCount;

if ( index < 0 )
index = 0;

from.SendGump( new CategorizedAddGump( from, m_Category.Parent, index ) );
}

break;
}
case 2: // Previous
{
if ( m_Page > 0 )
from.SendGump( new CategorizedAddGump( from, m_Category, m_Page - 1 ) );

break;
}
case 3: // Next
{
if ( (m_Page + 1) * EntryCount < m_Category.Nodes.Length )
from.SendGump( new CategorizedAddGump( from, m_Category, m_Page + 1 ) );

break;
}
default:
{
int index = (m_Page * EntryCount) + (info.ButtonID - 4);

if ( index >= 0 && index < m_Category.Nodes.Length )
m_Category.Nodes[index].OnClick( from, m_Page );

break;
}
}
}
}
}