// This file (FrmUnit.cs) is a part of the IBBoard.WarFoundry.GUI.WinForms project and is copyright 2009 IBBoard.
//
// The file and the library/program it is in are licensed under the GNU LGPL license, either version 3 of the License or (at your option) any later version. Please see COPYING.LGPL for more information and the full license.

using System;
using System.Drawing;
using System.Data;
using System.Collections.Generic;
using System.ComponentModel;
using System.Windows.Forms;
using IBBoard.Commands;
using IBBoard.Windows.Forms;
using IBBoard.WarFoundry.API;
using IBBoard.WarFoundry.API.Commands;
using IBBoard.WarFoundry.API.Objects;
using IBBoard.WarFoundry.GUI.WinForms.Util;

namespace IBBoard.WarFoundry
{
	///TODO: Separate weapons out into optional and required, where required only has button for replacing

	/// <summary>
	/// Summary description for FrmUnit.
	/// </summary>
	public class FrmUnit : IBBoard.Windows.Forms.IBBForm
	{
		private Unit unit;
		private Dictionary<UnitEquipmentItem, UnitEquipmentChoice> equipmentChoices = new Dictionary<UnitEquipmentItem, UnitEquipmentChoice>();
		private CommandStack commandStack;
		private System.Windows.Forms.DataGrid statsGrid;
		private System.Windows.Forms.TextBox tbUnitName;
		private System.Windows.Forms.NumericUpDown unitSize;
		private System.Windows.Forms.Label lblUnitSize;
		private System.Windows.Forms.Button bttnAddWeapon;
		private System.Windows.Forms.Button bttnRemoveWeapon;
		private System.Windows.Forms.Button bttnEditWeapon;
		private System.Windows.Forms.Label lblRequiredEquip;
		private System.Windows.Forms.ListBox reqdList;
		private System.Windows.Forms.ListBox optList;
		private System.Windows.Forms.Label lblOptionalEquip;
		private System.Windows.Forms.Button bttnReplaceWeapon;
		private System.Windows.Forms.Button bttnEditReqdWeapon;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public FrmUnit(Unit toDisplay, CommandStack cmdStack)
		{
			unit = toDisplay;
			commandStack = cmdStack;
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			tbUnitName.Text = unit.Name;
			Text = unit.Name;
			unit.NameChanged+=new StringValChangedDelegate(unit_NameChanged);
			unit.UnitSizeChanged+= new IntValChangedDelegate(unit_UnitSizeChanged);
			unit.UnitEquipmentAmountChanged+=new DoubleValChangedDelegate(unit_UnitEquipmentAmountChanged);

			if (unit.UnitType.MaxSize==unit.UnitType.MinSize)
			{
				unitSize.Value = unit.UnitType.MaxSize;
				unitSize.Visible = false;
				lblUnitSize.Visible = false;
			}
			else
			{
				unitSize.Value = unit.Size;
				unitSize.Maximum = (unit.UnitType.MaxSize == WarFoundryCore.INFINITY ? int.MaxValue : unit.UnitType.MaxSize);
				unitSize.Minimum = unit.UnitType.MinSize;
			}

			SetStats();
			SetWeapons();
		}

		private void SetStats()
		{
			DataTable dt = new DataTable();
			Stat[] stats = unit.UnitStatsArrayWithName;
			DataColumn[] dc = new DataColumn[stats.Length+1];
			dc[0] = new DataColumn("name");

			DataGridTableStyle dgStyle = new DataGridTableStyle();
			dgStyle.RowHeadersVisible = false;

			DataGridTextBoxColumn colStyle = new DataGridTextBoxColumn();
			colStyle.Width = statsGrid.ClientSize.Width - (stats.Length * 40) - 4;
			colStyle.MappingName = "name";
			colStyle.HeaderText = "name";
			colStyle.ReadOnly = true;
			dgStyle.GridColumnStyles.Add(colStyle);

			DataColumn tempCol;
			int i = 1;

			foreach (Stat stat in stats)
			{
				tempCol = new DataColumn(stat.ParentSlotName);
				dc[i] = tempCol;
				colStyle = new DataGridTextBoxColumn();
				colStyle.Alignment = HorizontalAlignment.Center;
				colStyle.Width = 40;
				colStyle.MappingName = stat.ParentSlotName;
				colStyle.HeaderText = stat.ParentSlotName;
				colStyle.ReadOnly = true;
				dgStyle.GridColumnStyles.Add(colStyle);
				i++;
			}

			dt.Columns.AddRange(dc);

			DataRow dr = dt.NewRow();
			dr.ItemArray = unit.UnitStatsArrayWithName;
			dt.Rows.Add(dr);
			statsGrid.DataSource = dt;
			statsGrid.TableStyles.Add(dgStyle);
		}

		private void SetWeapons()
		{
			foreach(UnitEquipmentItem item in unit.GetEquipment())
			{
				if (item.IsRequired)
				{
					reqdList.Items.Add(GetEquipmentChoice(item));
				}
				else
				{
					optList.Items.Add(GetEquipmentChoice(item));
				}
			}
		}

		private UnitEquipmentChoice GetEquipmentChoice(UnitEquipmentItem item)
		{
			UnitEquipmentChoice choice = null;
			equipmentChoices.TryGetValue(item, out choice);

			if (choice == null)
			{
				choice = new UnitEquipmentChoice(Unit, item);
				equipmentChoices[item] = choice;
			}

			return choice;
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			//remove our leave events so that disposing doesn't trigger them
			tbUnitName.Leave-= new System.EventHandler(this.tbUnitName_Leave);
			unitSize.Leave-= new System.EventHandler(this.unitSize_Leave);

			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.statsGrid = new System.Windows.Forms.DataGrid();
			this.tbUnitName = new System.Windows.Forms.TextBox();
			this.unitSize = new System.Windows.Forms.NumericUpDown();
			this.lblUnitSize = new System.Windows.Forms.Label();
			this.lblRequiredEquip = new System.Windows.Forms.Label();
			this.bttnAddWeapon = new System.Windows.Forms.Button();
			this.bttnRemoveWeapon = new System.Windows.Forms.Button();
			this.reqdList = new System.Windows.Forms.ListBox();
			this.bttnEditWeapon = new System.Windows.Forms.Button();
			this.optList = new System.Windows.Forms.ListBox();
			this.lblOptionalEquip = new System.Windows.Forms.Label();
			this.bttnReplaceWeapon = new System.Windows.Forms.Button();
			this.bttnEditReqdWeapon = new System.Windows.Forms.Button();
			((System.ComponentModel.ISupportInitialize)(this.statsGrid)).BeginInit();
			((System.ComponentModel.ISupportInitialize)(this.unitSize)).BeginInit();
			this.SuspendLayout();
			// 
			// statsGrid
			// 
			this.statsGrid.AllowNavigation = false;
			this.statsGrid.AllowSorting = false;
			this.statsGrid.AlternatingBackColor = System.Drawing.SystemColors.Control;
			this.statsGrid.BackgroundColor = System.Drawing.SystemColors.Control;
			this.statsGrid.CaptionVisible = false;
			this.statsGrid.DataMember = "";
			this.statsGrid.GridLineColor = System.Drawing.SystemColors.ControlDarkDark;
			this.statsGrid.HeaderForeColor = System.Drawing.SystemColors.ControlText;
			this.statsGrid.Location = new System.Drawing.Point(8, 32);
			this.statsGrid.Name = "statsGrid";
			this.statsGrid.PreferredColumnWidth = 40;
			this.statsGrid.ReadOnly = true;
			this.statsGrid.RowHeadersVisible = false;
			this.statsGrid.SelectionBackColor = System.Drawing.SystemColors.Control;
			this.statsGrid.SelectionForeColor = System.Drawing.SystemColors.WindowText;
			this.statsGrid.Size = new System.Drawing.Size(600, 88);
			this.statsGrid.TabIndex = 0;
			this.statsGrid.TabStop = false;
			// 
			// tbUnitName
			// 
			this.tbUnitName.Location = new System.Drawing.Point(8, 8);
			this.tbUnitName.Name = "tbUnitName";
			this.tbUnitName.Size = new System.Drawing.Size(344, 20);
			this.tbUnitName.TabIndex = 1;
			this.tbUnitName.Text = "";
			this.tbUnitName.KeyDown += new System.Windows.Forms.KeyEventHandler(this.tbUnitName_KeyDown);
			this.tbUnitName.Leave += new System.EventHandler(this.tbUnitName_Leave);
			// 
			// unitSize
			// 
			this.unitSize.Location = new System.Drawing.Point(528, 8);
			this.unitSize.Name = "unitSize";
			this.unitSize.Size = new System.Drawing.Size(80, 20);
			this.unitSize.TabIndex = 1;
			this.unitSize.TextAlign = System.Windows.Forms.HorizontalAlignment.Right;
			this.unitSize.Value = new System.Decimal(new int[] {
																   1,
																   0,
																   0,
																   0});
			this.unitSize.KeyDown += new System.Windows.Forms.KeyEventHandler(this.unitSize_KeyDown);
			this.unitSize.Leave += new System.EventHandler(this.unitSize_Leave);
			// 
			// lblUnitSize
			// 
			this.lblUnitSize.Location = new System.Drawing.Point(424, 8);
			this.lblUnitSize.Name = "lblUnitSize";
			this.lblUnitSize.TabIndex = 0;
			this.lblUnitSize.Text = "unit size";
			this.lblUnitSize.TextAlign = System.Drawing.ContentAlignment.TopRight;
			// 
			// lblRequiredEquip
			// 
			this.lblRequiredEquip.Location = new System.Drawing.Point(8, 128);
			this.lblRequiredEquip.Name = "lblRequiredEquip";
			this.lblRequiredEquip.Size = new System.Drawing.Size(88, 32);
			this.lblRequiredEquip.TabIndex = 3;
			this.lblRequiredEquip.Text = "reqd equipment";
			this.lblRequiredEquip.TextAlign = System.Drawing.ContentAlignment.TopRight;
			// 
			// bttnAddWeapon
			// 
			this.bttnAddWeapon.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.bttnAddWeapon.Location = new System.Drawing.Point(520, 200);
			this.bttnAddWeapon.Name = "bttnAddWeapon";
			this.bttnAddWeapon.Size = new System.Drawing.Size(88, 22);
			this.bttnAddWeapon.TabIndex = 4;
			this.bttnAddWeapon.Text = "add";
			this.bttnAddWeapon.Click += new System.EventHandler(this.bttnAddWeapon_Click);
			// 
			// bttnRemoveWeapon
			// 
			this.bttnRemoveWeapon.Enabled = false;
			this.bttnRemoveWeapon.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.bttnRemoveWeapon.Location = new System.Drawing.Point(520, 248);
			this.bttnRemoveWeapon.Name = "bttnRemoveWeapon";
			this.bttnRemoveWeapon.Size = new System.Drawing.Size(88, 22);
			this.bttnRemoveWeapon.TabIndex = 5;
			this.bttnRemoveWeapon.Text = "remove";
			this.bttnRemoveWeapon.Click += new System.EventHandler(this.bttnRemoveWeapon_Click);
			// 
			// reqdList
			// 
			this.reqdList.Location = new System.Drawing.Point(104, 128);
			this.reqdList.Name = "reqdList";
			this.reqdList.Size = new System.Drawing.Size(408, 69);
			this.reqdList.TabIndex = 6;
			this.reqdList.DoubleClick += new System.EventHandler(this.reqdList_DoubleClick);
			this.reqdList.SelectedIndexChanged += new System.EventHandler(this.reqdList_SelectedIndexChanged);
			// 
			// bttnEditWeapon
			// 
			this.bttnEditWeapon.Enabled = false;
			this.bttnEditWeapon.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.bttnEditWeapon.Location = new System.Drawing.Point(520, 224);
			this.bttnEditWeapon.Name = "bttnEditWeapon";
			this.bttnEditWeapon.Size = new System.Drawing.Size(88, 22);
			this.bttnEditWeapon.TabIndex = 7;
			this.bttnEditWeapon.Text = "edit";
			this.bttnEditWeapon.Click += new System.EventHandler(this.bttnEditWeapon_Click);
			// 
			// optList
			// 
			this.optList.Location = new System.Drawing.Point(104, 200);
			this.optList.Name = "optList";
			this.optList.Size = new System.Drawing.Size(408, 69);
			this.optList.TabIndex = 9;
			this.optList.DoubleClick += new System.EventHandler(this.optList_DoubleClick);
			this.optList.SelectedIndexChanged += new System.EventHandler(this.optList_SelectedIndexChanged);
			// 
			// lblOptionalEquip
			// 
			this.lblOptionalEquip.Location = new System.Drawing.Point(8, 200);
			this.lblOptionalEquip.Name = "lblOptionalEquip";
			this.lblOptionalEquip.Size = new System.Drawing.Size(88, 32);
			this.lblOptionalEquip.TabIndex = 8;
			this.lblOptionalEquip.Text = "opt equipment";
			this.lblOptionalEquip.TextAlign = System.Drawing.ContentAlignment.TopRight;
			// 
			// bttnReplaceWeapon
			// 
			this.bttnReplaceWeapon.Enabled = false;
			this.bttnReplaceWeapon.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.bttnReplaceWeapon.Location = new System.Drawing.Point(520, 128);
			this.bttnReplaceWeapon.Name = "bttnReplaceWeapon";
			this.bttnReplaceWeapon.Size = new System.Drawing.Size(88, 22);
			this.bttnReplaceWeapon.TabIndex = 10;
			this.bttnReplaceWeapon.Text = "replace";
			this.bttnReplaceWeapon.Click += new System.EventHandler(this.bttnReplaceWeapon_Click);
			// 
			// bttnEditReqdWeapon
			// 
			this.bttnEditReqdWeapon.Enabled = false;
			this.bttnEditReqdWeapon.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.bttnEditReqdWeapon.Location = new System.Drawing.Point(520, 152);
			this.bttnEditReqdWeapon.Name = "bttnEditReqdWeapon";
			this.bttnEditReqdWeapon.Size = new System.Drawing.Size(88, 22);
			this.bttnEditReqdWeapon.TabIndex = 11;
			this.bttnEditReqdWeapon.Text = "edit";
			this.bttnEditReqdWeapon.Click += new System.EventHandler(this.bttnEditReqdWeapon_Click);
			// 
			// FrmUnit
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(616, 314);
			this.Controls.Add(this.bttnEditReqdWeapon);
			this.Controls.Add(this.bttnReplaceWeapon);
			this.Controls.Add(this.optList);
			this.Controls.Add(this.lblOptionalEquip);
			this.Controls.Add(this.bttnEditWeapon);
			this.Controls.Add(this.reqdList);
			this.Controls.Add(this.bttnRemoveWeapon);
			this.Controls.Add(this.bttnAddWeapon);
			this.Controls.Add(this.lblRequiredEquip);
			this.Controls.Add(this.lblUnitSize);
			this.Controls.Add(this.unitSize);
			this.Controls.Add(this.tbUnitName);
			this.Controls.Add(this.statsGrid);
			this.Name = "FrmUnit";
			this.ShowInTaskbar = false;
			this.Text = "FrmUnit";
			((System.ComponentModel.ISupportInitialize)(this.statsGrid)).EndInit();
			((System.ComponentModel.ISupportInitialize)(this.unitSize)).EndInit();
			this.ResumeLayout(false);

		}
		#endregion

		public Unit Unit
		{
			get { return unit; }
		}

		private void tbUnitName_Leave(object sender, System.EventArgs e)
		{
			updateUnitName();
		}

		private void tbUnitName_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
		{
			if (e.KeyCode == Keys.Enter)
			{
				updateUnitName();
			}
		}

		private void updateUnitName()
		{			
			if (unit.Name!=tbUnitName.Text)
			{
				commandStack.Execute(new SetNameCommand(unit, tbUnitName.Text));
			}
		}

		private void unitSize_Leave(object sender, System.EventArgs e)
		{
			updateUnitSize();
		}

		private void unitSize_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
		{
			if (e.KeyCode == Keys.Enter)
			{
				updateUnitSize();
			}		
		}

		private void updateUnitSize()
		{
			if (unit.Size!=unitSize.Value)
			{
				commandStack.Execute(new SetUnitSizeCommand(unit, (int)unitSize.Value));
			}
		}

		private void unit_NameChanged(WarFoundryObject obj, string oldValue, string newValue)
		{
			if (obj is Unit && obj.Equals(unit))
			{
				Unit u = (Unit)obj;
				tbUnitName.Text = obj.Name;
				Text = obj.Name;
			}
		}

		private void unit_UnitSizeChanged(WarFoundryObject obj, int oldValue, int newValue)
		{
			if (obj is Unit && obj.Equals(unit))
			{
				unitSize.Value = newValue;
			}
		}

		private void reqdList_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			bttnReplaceWeapon.Enabled = (reqdList.SelectedIndex>-1 && ((UnitEquipmentChoice)reqdList.SelectedItem).Item.HasAlternatives());
			bttnEditReqdWeapon.Enabled = (reqdList.SelectedIndex>-1);
		}

		private void optList_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			bttnEditWeapon.Enabled = optList.SelectedIndex>-1;
			bttnRemoveWeapon.Enabled = bttnEditWeapon.Enabled;
		}

		private void unit_UnitEquipmentAmountChanged(WarFoundryObject obj, double oldValue, double newValue)
		{
			if (obj is UnitEquipmentItem)
			{
				UnitEquipmentItem equip = (UnitEquipmentItem)obj;
				ListBox weaponList = (equip.IsRequired ? reqdList : optList);

				if (newValue==0)
				{
					weaponList.Items.Remove(GetEquipmentChoice(equip));
				}
				else
				{
					UnitEquipmentChoice equipObj = GetEquipmentChoice(equip);
					int idx = weaponList.Items.IndexOf(equipObj);

					if (idx>-1)
					{
						weaponList.Items[idx] = equipObj;
					}
					else
					{
						weaponList.Items.Add(equipObj);
					}
				}
			}
		}

		private void editWeapon(ListBox list)
		{
			FrmEditUnitEquipment editEquip = new FrmEditUnitEquipment(Unit, ((UnitEquipmentChoice)list.SelectedItem).Item, commandStack);
			editEquip.ShowDialog(this);
		}

		private void bttnEditWeapon_Click(object sender, System.EventArgs e)
		{
			editWeapon(optList);
		}

		private void optList_DoubleClick(object sender, System.EventArgs e)
		{
			editWeapon(optList);
		}

		private void reqdList_DoubleClick(object sender, System.EventArgs e)
		{
			editWeapon(reqdList);
		}

		private void addWeapon()
		{
			FrmNewUnitEquipment newEquip = new FrmNewUnitEquipment(Unit, commandStack);
			newEquip.ShowDialog(this);
		}

		private void bttnAddWeapon_Click(object sender, System.EventArgs e)
		{
			addWeapon();
		}

		private void removeWeapon()
		{
			commandStack.Execute(new SetUnitEquipmentAmountCommand(unit, ((UnitEquipmentChoice)optList.SelectedItem).Item, 0));
		}

		private void bttnRemoveWeapon_Click(object sender, System.EventArgs e)
		{
			removeWeapon();
		}

		private void bttnEditReqdWeapon_Click(object sender, System.EventArgs e)
		{
			editWeapon(reqdList);
		}

		private void bttnReplaceWeapon_Click(object sender, System.EventArgs e)
		{
			FrmReplaceUnitEquipment replace = new FrmReplaceUnitEquipment(unit, ((UnitEquipmentChoice)reqdList.SelectedItem).Item, commandStack);
			replace.ShowDialog(this);
		}
	}
}