#region ================== Copyright (c) 2007 Pascal vd Heiden

/*
 * Copyright (c) 2007 Pascal vd Heiden, www.codeimp.com
 * This program is released under GNU General Public License
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 */

#endregion

#region ================== Namespaces

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using CodeImp.DoomBuilder.Map;
using CodeImp.DoomBuilder.Data;
using CodeImp.DoomBuilder.IO;
using System.IO;
using CodeImp.DoomBuilder.Config;
using CodeImp.DoomBuilder.Editing;
using CodeImp.DoomBuilder.Geometry;
using CodeImp.DoomBuilder.Controls;
using CodeImp.DoomBuilder.GZBuilder.Data;

#endregion

namespace CodeImp.DoomBuilder.Windows
{
	/// <summary>
	/// Dialog window that allows viewing and editing of Thing properties.
	/// </summary>
	public partial class ThingEditForm : DelayedForm
	{
		#region ================== Variables

		private ICollection<Thing> things;
		private ThingTypeInfo thinginfo;
		private bool preventchanges = false;
        //mxd
        private Vector2D initialPosition; //initial position of a thing used to fill posX and posY fields
		
		#endregion

		#region ================== Properties

		#endregion

		#region ================== Constructor

		// Constructor
		public ThingEditForm()
		{
			// Initialize
			InitializeComponent();
			
			// Fill flags list
			foreach(KeyValuePair<string, string> tf in General.Map.Config.ThingFlags)
				flags.Add(tf.Value, tf.Key);

			// Fill actions list
			action.GeneralizedCategories = General.Map.Config.GenActionCategories;
			action.AddInfo(General.Map.Config.SortedLinedefActions.ToArray());

			// Fill universal fields list
			fieldslist.ListFixedFields(General.Map.Config.ThingFields);
			
			// Initialize custom fields editor
			fieldslist.Setup("thing");

			// Custom fields?
			if(!General.Map.FormatInterface.HasCustomFields)
				tabs.TabPages.Remove(tabcustom);
			
			// Tag/Effects?
			if(!General.Map.FormatInterface.HasThingAction && !General.Map.FormatInterface.HasThingTag)
				tabs.TabPages.Remove(tabeffects);
			
			// Thing height?
			height.Visible = General.Map.FormatInterface.HasThingHeight;
			heightlabel.Visible = General.Map.FormatInterface.HasThingHeight;
			
			// Setup types list
			thingtype.Setup();
		}

		// This sets up the form to edit the given things
		public void Setup(ICollection<Thing> things)
		{
			Thing ft;

			preventchanges = true;

			// Keep this list
			this.things = things;
			if(things.Count > 1) this.Text = "Edit Things (" + things.Count + ")";
			
			////////////////////////////////////////////////////////////////////////
			// Set all options to the first thing properties
			////////////////////////////////////////////////////////////////////////

			ft = General.GetByIndex(things, 0);
			
			// Set type
			thingtype.SelectType(ft.Type);
			
			// Flags
			foreach(CheckBox c in flags.Checkboxes)
				if(ft.Flags.ContainsKey(c.Tag.ToString())) c.Checked = ft.Flags[c.Tag.ToString()];
			
			// Coordination
			angle.Text = ft.AngleDoom.ToString();
			height.Text = ((int)ft.Position.z).ToString();

            //mxd
            initialPosition = ft.Position;
            posX.Text = ((int)ft.Position.x).ToString();
            posY.Text = ((int)ft.Position.y).ToString();
            posX.ButtonStep = General.Map.Grid.GridSize;
            posY.ButtonStep = General.Map.Grid.GridSize;

            //mxd. setup arg0str
            arg0str.Location = arg0.Location;

            // Custom fields
            fieldslist.SetValues(ft.Fields, true);

			// Action/tags
			action.Value = ft.Action;
			tag.Text = ft.Tag.ToString();
			arg0.SetValue(ft.Args[0]);
			arg1.SetValue(ft.Args[1]);
			arg2.SetValue(ft.Args[2]);
			arg3.SetValue(ft.Args[3]);
			arg4.SetValue(ft.Args[4]);

			////////////////////////////////////////////////////////////////////////
			// Now go for all lines and change the options when a setting is different
			////////////////////////////////////////////////////////////////////////
			
			// Go for all things
			foreach(Thing t in things)
			{
				// Type does not match?
				if((thingtype.GetSelectedInfo() != null) &&
				   (thingtype.GetSelectedInfo().Index != t.Type))
					thingtype.ClearSelectedType();
				
				// Flags
				foreach(CheckBox c in flags.Checkboxes)
				{
					if(t.Flags.ContainsKey(c.Tag.ToString()))
					{
						if(t.Flags[c.Tag.ToString()] != c.Checked)
						{
							c.ThreeState = true;
							c.CheckState = CheckState.Indeterminate;
						}
					}
				}
				
				// Coordination
				if(t.AngleDoom.ToString() != angle.Text) angle.Text = "";
				if(((int)t.Position.z).ToString() != height.Text) height.Text = "";

				// Action/tags
				if(t.Action != action.Value) action.Empty = true;
				if(t.Tag.ToString() != tag.Text) tag.Text = "";
				if(t.Args[0] != arg0.GetResult(-1)) arg0.ClearValue();
				if(t.Args[1] != arg1.GetResult(-1)) arg1.ClearValue();
				if(t.Args[2] != arg2.GetResult(-1)) arg2.ClearValue();
				if(t.Args[3] != arg3.GetResult(-1)) arg3.ClearValue();
				if(t.Args[4] != arg4.GetResult(-1)) arg4.ClearValue();

				// Custom fields
				fieldslist.SetValues(t.Fields, false);
			}

			preventchanges = false;
		}

        //mxd
        private void setNumberedScripts(Thing t) {
            arg0str.Items.Clear();

            if (General.Map.NumberedScripts.Count > 0) {
                foreach (ScriptItem si in General.Map.NumberedScripts) {
                    arg0str.Items.Add(si);
                    if (si.Index == t.Args[0])
                        arg0str.SelectedIndex = arg0str.Items.Count - 1;
                }

                //script number is not among known scripts...
                if (arg0str.SelectedIndex == -1 && t.Args[0] > 0) {
                    arg0str.Items.Add(new ScriptItem(t.Args[0], "Script " + t.Args[0]));
                    arg0str.SelectedIndex = arg0str.Items.Count - 1;
                }

            } else if (t.Args[0] > 0) {
                arg0str.Items.Add(new ScriptItem(t.Args[0], "Script " + t.Args[0]));
                arg0str.SelectedIndex = 0;
            }
        }
        //mxd
        private void setNamedScripts(string selectedValue) {
            arg0str.Items.Clear();

            //update arg0str items
            if (General.Map.NamedScripts.Count > 0) {
                ScriptItem[] sn = new ScriptItem[General.Map.NamedScripts.Count];
                General.Map.NamedScripts.CopyTo(sn, 0);
                arg0str.Items.AddRange(sn);
                
                for(int i = 0; i < sn.Length; i++){
                    if (sn[i].Name == selectedValue) {
                        arg0str.SelectedIndex = i;
                        break;
                    }
                }

            } else {
                arg0str.Text = selectedValue;
            }
        }
		
		#endregion

		#region ================== Interface

		// This finds a new (unused) tag
		private void newtag_Click(object sender, EventArgs e)
		{
			tag.Text = General.Map.Map.GetNewTag().ToString();
		}

		// Selected type changes
		private void thingtype_OnTypeChanged(ThingTypeInfo value)
		{
			thinginfo = value;

			// Update preview image
			if(thinginfo != null)
			{
				if(thinginfo.Sprite.ToLowerInvariant().StartsWith(DataManager.INTERNAL_PREFIX) &&
				   (thinginfo.Sprite.Length > DataManager.INTERNAL_PREFIX.Length))
				{
					General.DisplayZoomedImage(spritetex, General.Map.Data.GetSpriteImage(thinginfo.Sprite).GetBitmap());
				}
				else if((thinginfo.Sprite.Length <= 8) && (thinginfo.Sprite.Length > 0))
				{
					General.DisplayZoomedImage(spritetex, General.Map.Data.GetSpriteImage(thinginfo.Sprite).GetPreview());
				}
				else
				{
					spritetex.BackgroundImage = null;
				}
			}
			else
			{
				spritetex.BackgroundImage = null;
			}
			
			// Update arguments
			action_ValueChanges(this, EventArgs.Empty);
		}
		
		// Action changes
		private void action_ValueChanges(object sender, EventArgs e)
		{
			int showaction = 0;
			ArgumentInfo[] arginfo;

			// Only when line type is known, otherwise use the thing arguments
			if(General.Map.Config.LinedefActions.ContainsKey(action.Value)) showaction = action.Value;
			if((showaction == 0) && (thinginfo != null)) arginfo = thinginfo.Args; else arginfo = General.Map.Config.LinedefActions[showaction].Args;
			
			// Change the argument descriptions
			arg0label.Text = arginfo[0].Title + ":";
			arg1label.Text = arginfo[1].Title + ":";
			arg2label.Text = arginfo[2].Title + ":";
			arg3label.Text = arginfo[3].Title + ":";
			arg4label.Text = arginfo[4].Title + ":";
			arg0label.Enabled = arginfo[0].Used;
			arg1label.Enabled = arginfo[1].Used;
			arg2label.Enabled = arginfo[2].Used;
			arg3label.Enabled = arginfo[3].Used;
			arg4label.Enabled = arginfo[4].Used;
			if(arg0label.Enabled) arg0.ForeColor = SystemColors.WindowText; else arg0.ForeColor = SystemColors.GrayText;
			if(arg1label.Enabled) arg1.ForeColor = SystemColors.WindowText; else arg1.ForeColor = SystemColors.GrayText;
			if(arg2label.Enabled) arg2.ForeColor = SystemColors.WindowText; else arg2.ForeColor = SystemColors.GrayText;
			if(arg3label.Enabled) arg3.ForeColor = SystemColors.WindowText; else arg3.ForeColor = SystemColors.GrayText;
			if(arg4label.Enabled) arg4.ForeColor = SystemColors.WindowText; else arg4.ForeColor = SystemColors.GrayText;

            arg0.Setup(arginfo[0]);
            arg1.Setup(arginfo[1]);
            arg2.Setup(arginfo[2]);
            arg3.Setup(arginfo[3]);
            arg4.Setup(arginfo[4]);

			// Zero all arguments when linedef action 0 (normal) is chosen
			if(!preventchanges && (showaction == 0))
			{
                //mxd
                arg0.SetDefaultValue();
                arg1.SetDefaultValue();
                arg2.SetDefaultValue();
                arg3.SetDefaultValue();
                arg4.SetDefaultValue();
			}

            //update arg0str
            if (Array.IndexOf(GZBuilder.GZGeneral.ACS_SPECIALS, showaction) != -1) {
                arg0str.Visible = true;

                if (General.Map.UDMF && fieldslist.GetValue("arg0str") != null) {
                    cbArgStr.Visible = true;
                    cbArgStr.Checked = true;
                    setNamedScripts((string)fieldslist.GetValue("arg0str"));
                } else { //use script numbers
                    cbArgStr.Visible = General.Map.UDMF;
                    cbArgStr.Checked = false;
                    Thing t = General.GetByIndex(things, 0);
                    setNumberedScripts(t);
                }
            } else {
                cbArgStr.Checked = false;
                cbArgStr.Visible = false;
                arg0str.Visible = false;
            }
		}

		// Browse Action clicked
		private void browseaction_Click(object sender, EventArgs e)
		{
			action.Value = ActionBrowserForm.BrowseAction(this, action.Value);
		}

		// Angle text changes
		private void angle_TextChanged(object sender, EventArgs e)
		{
			anglecontrol.Value = angle.GetResult(int.MinValue);
		}

		// Angle control clicked
		private void anglecontrol_ButtonClicked(object sender, EventArgs e)
		{
			angle.Text = anglecontrol.Value.ToString();
		}

		// Apply clicked
		private void apply_Click(object sender, EventArgs e)
		{
			List<string> defaultflags = new List<string>();
			string undodesc = "thing";

			// Verify the tag
			if(General.Map.FormatInterface.HasThingTag && ((tag.GetResult(0) < General.Map.FormatInterface.MinTag) || (tag.GetResult(0) > General.Map.FormatInterface.MaxTag)))
			{
				General.ShowWarningMessage("Thing tag must be between " + General.Map.FormatInterface.MinTag + " and " + General.Map.FormatInterface.MaxTag + ".", MessageBoxButtons.OK);
				return;
			}

			// Verify the type
			if(((thingtype.GetResult(0) < General.Map.FormatInterface.MinThingType) || (thingtype.GetResult(0) > General.Map.FormatInterface.MaxThingType)))
			{
				General.ShowWarningMessage("Thing type must be between " + General.Map.FormatInterface.MinThingType + " and " + General.Map.FormatInterface.MaxThingType + ".", MessageBoxButtons.OK);
				return;
			}

			// Verify the action
			if(General.Map.FormatInterface.HasThingAction && ((action.Value < General.Map.FormatInterface.MinAction) || (action.Value > General.Map.FormatInterface.MaxAction)))
			{
				General.ShowWarningMessage("Thing action must be between " + General.Map.FormatInterface.MinAction + " and " + General.Map.FormatInterface.MaxAction + ".", MessageBoxButtons.OK);
				return;
			}

			// Make undo
			if(things.Count > 1) undodesc = things.Count + " things";
			General.Map.UndoRedo.CreateUndo("Edit " + undodesc);

            //mxd
            Vector2D delta = new Vector2D((float)posX.GetResult((int)initialPosition.x) - initialPosition.x, (float)posY.GetResult((int)initialPosition.y) - initialPosition.y);
            bool hasAcs = Array.IndexOf(GZBuilder.GZGeneral.ACS_SPECIALS, action.Value) != -1;
            bool hasArg0str = General.Map.UDMF && !action.Empty && hasAcs && arg0str.Text.Length > 0;

			// Go for all the things
			foreach(Thing t in things)
			{
				// Thing type index
				t.Type = General.Clamp(thingtype.GetResult(t.Type), General.Map.FormatInterface.MinThingType, General.Map.FormatInterface.MaxThingType);
				
				// Coordination
				t.Rotate(angle.GetResult(t.AngleDoom));
                //mxd
				//t.Move(t.Position.x, t.Position.y, (float)height.GetResult((int)t.Position.z));
                t.Move(t.Position.x + delta.x, t.Position.y + delta.y, (float)height.GetResult((int)t.Position.z));
				
				// Apply all flags
				foreach(CheckBox c in flags.Checkboxes)
				{
					if(c.CheckState == CheckState.Checked) t.SetFlag(c.Tag.ToString(), true);
					else if(c.CheckState == CheckState.Unchecked) t.SetFlag(c.Tag.ToString(), false);
				}

				// Action/tags
				t.Tag = tag.GetResult(t.Tag);
				if(!action.Empty) t.Action = action.Value;

                //mxd
                if (hasAcs && !cbArgStr.Checked) {
                    if(arg0str.SelectedItem != null)
                        t.Args[0] = ((ScriptItem)arg0str.SelectedItem).Index;
                    else if(!int.TryParse(arg0str.Text.Trim(), out t.Args[0]))
                        t.Args[0] = 0;
                } else {
                    t.Args[0] = arg0.GetResult(t.Args[0]);
                }
				t.Args[1] = arg1.GetResult(t.Args[1]);
				t.Args[2] = arg2.GetResult(t.Args[2]);
				t.Args[3] = arg3.GetResult(t.Args[3]);
				t.Args[4] = arg4.GetResult(t.Args[4]);
				
				// Custom fields
				fieldslist.Apply(t.Fields);

                //mxd. apply arg0str
                if (hasArg0str && cbArgStr.Checked) {
                    if (t.Fields.ContainsKey("arg0str"))
                        t.Fields["arg0str"].Value = arg0str.Text;
                    else
                        t.Fields.Add("arg0str", new UniValue(2, arg0str.Text));
                } else if (t.Fields.ContainsKey("arg0str")) {
                    t.Fields.Remove("arg0str");
                }
				
				// Update settings
				t.UpdateConfiguration();
			}

			// Set as defaults
			foreach(CheckBox c in flags.Checkboxes)
				if(c.CheckState == CheckState.Checked) defaultflags.Add(c.Tag.ToString());
			General.Settings.DefaultThingType = thingtype.GetResult(General.Settings.DefaultThingType);
			General.Settings.DefaultThingAngle = Angle2D.DegToRad((float)angle.GetResult((int)Angle2D.RadToDeg(General.Settings.DefaultThingAngle) - 90) + 90);
			General.Settings.SetDefaultThingFlags(defaultflags);
			
			// Done
			General.Map.IsChanged = true;
			this.DialogResult = DialogResult.OK;
			this.Close();
		}

		// Cancel clicked
		private void cancel_Click(object sender, EventArgs e)
		{
			// Be gone
			this.DialogResult = DialogResult.Cancel;
			this.Close();
		}

        //mxd
        private void cbArgStr_CheckedChanged(object sender, EventArgs e) {
            arg0str.Text = "";

            if (cbArgStr.Checked){
                setNamedScripts((string)fieldslist.GetValue("arg0str"));
            } else if (!cbArgStr.Checked) {
                setNumberedScripts(General.GetByIndex(things, 0));
            }

            arg0label.Text = cbArgStr.Checked ? "Script name:" : "Script number:";
        }

        //mxd
        private void arg0str_Leave(object sender, EventArgs e) {
            if(cbArgStr.Checked) fieldslist.SetValue("arg0str", arg0str.Text, CodeImp.DoomBuilder.Types.UniversalType.String);
        }

        //mxd
        private void fieldslist_OnFieldValueChanged(string fieldname) {
            if (cbArgStr.Checked && fieldname == "arg0str")
                arg0str.Text = (string)fieldslist.GetValue(fieldname);
        }

		// Help
		private void ThingEditForm_HelpRequested(object sender, HelpEventArgs hlpevent)
		{
			General.ShowHelp("w_thingeditor.html");
			hlpevent.Handled = true;
		}
		
		#endregion
	}
}