// This file (FrmUnit.cs) is a part of the IBBoard.WarFoundry.GUI.WinForms project and is copyright 2007, 2008, 2009 IBBoard.
//
// The file and the library/program it is in are licensed and distributed, without warranty, under the GNU Affero GPL license, either version 3 of the License or (at your option) any later version. Please see COPYING 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.Lang;
using IBBoard.Windows.Forms;
using IBBoard.WarFoundry.API;
using IBBoard.WarFoundry.API.Commands;
using IBBoard.WarFoundry.API.Objects;
using IBBoard.WarFoundry.GUI.WinForms.UI;
using IBBoard.WarFoundry.GUI.WinForms.Util;

namespace IBBoard.WarFoundry.GUI.WinForms
{
	/// <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.Label lblEquip;
		private System.Windows.Forms.ListBox equipmentList;
		private System.Windows.Forms.Button bttnReplaceWeapon;
		private System.Windows.Forms.Button bttnEditWeapon;
		private Label lblPoints;
		/// <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);
			unit.PointsValueChanged += new DoubleValChangedDelegate(unit_PointsValueChanged);

			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;
			}

			SetPointsValueText();
			SetStats();
			SetWeapons();
		}

		void unit_PointsValueChanged(WarFoundryObject obj, double oldValue, double newValue)
		{
			SetPointsValueText();
		}

		private void SetPointsValueText()
		{
			lblPoints.Text = "(" + unit.PointsValue + " pts)";
		}

		private void SetStats()
		{
			DataTable dt = new DataTable();
			Stat[] stats = unit.UnitStatsArrayWithName;
			int statsCount = stats.Length;
			DataColumn[] dc = new DataColumn[statsCount];

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

			Stat stat = stats[0];
			DataColumn tempCol = new DataColumn(stat.ParentSlotName);
			tempCol.DataType = stat.GetType();

			for (int i = 0; i < statsCount; i++)
			{
				stat = stats[i];
				tempCol = new DataColumn(stat.ParentSlotName);
				tempCol.DataType = stat.GetType();
				dc[i] = tempCol;
				DataGridColumnStyle colStyle = new StatColumnStyle();
				colStyle.Width = 40;
				colStyle.MappingName = stat.ParentSlotName;
				colStyle.HeaderText = stat.ParentSlotName;
				colStyle.Alignment = HorizontalAlignment.Center;
				colStyle.ReadOnly = true;
				dgStyle.GridColumnStyles.Add(colStyle);
			}

			DataGridColumnStyle nameColStyle = dgStyle.GridColumnStyles[0];
			nameColStyle.HeaderText = Translation.GetTranslation("UnitName", "Name");
			nameColStyle.Alignment = HorizontalAlignment.Left;
			nameColStyle.Width = statsGrid.ClientSize.Width - ((stats.Length - 1) * 40) - 4;

			dt.Columns.AddRange(dc);

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

		private void SetWeapons()
		{
			foreach (UnitEquipmentItem item in unit.GetEquipment())
			{
				equipmentList.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.lblEquip = new System.Windows.Forms.Label();
			this.bttnAddWeapon = new System.Windows.Forms.Button();
			this.bttnRemoveWeapon = new System.Windows.Forms.Button();
			this.equipmentList = new System.Windows.Forms.ListBox();
			this.bttnReplaceWeapon = new System.Windows.Forms.Button();
			this.bttnEditWeapon = new System.Windows.Forms.Button();
			this.lblPoints = new System.Windows.Forms.Label();
			((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.Anchor = ((System.Windows.Forms.AnchorStyles) (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
						| System.Windows.Forms.AnchorStyles.Right)));
			this.statsGrid.BackgroundColor = System.Drawing.SystemColors.Control;
			this.statsGrid.CaptionVisible = false;
			this.statsGrid.CausesValidation = 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.Leave += new System.EventHandler(this.tbUnitName_Leave);
			this.tbUnitName.KeyDown += new System.Windows.Forms.KeyEventHandler(this.tbUnitName_KeyDown);
			// 
			// unitSize
			// 
			this.unitSize.Anchor = ((System.Windows.Forms.AnchorStyles) ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
			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 decimal(new int[] {
            1,
            0,
            0,
            0});
			this.unitSize.Leave += new System.EventHandler(this.unitSize_Leave);
			this.unitSize.KeyDown += new System.Windows.Forms.KeyEventHandler(this.unitSize_KeyDown);
			// 
			// lblUnitSize
			// 
			this.lblUnitSize.Anchor = ((System.Windows.Forms.AnchorStyles) ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
			this.lblUnitSize.Location = new System.Drawing.Point(452, 8);
			this.lblUnitSize.Name = "lblUnitSize";
			this.lblUnitSize.Size = new System.Drawing.Size(72, 23);
			this.lblUnitSize.TabIndex = 0;
			this.lblUnitSize.Text = "unit size";
			this.lblUnitSize.TextAlign = System.Drawing.ContentAlignment.TopRight;
			// 
			// lblEquip
			// 
			this.lblEquip.Location = new System.Drawing.Point(8, 123);
			this.lblEquip.Name = "lblEquip";
			this.lblEquip.Size = new System.Drawing.Size(88, 32);
			this.lblEquip.TabIndex = 3;
			this.lblEquip.Text = "equipment";
			this.lblEquip.TextAlign = System.Drawing.ContentAlignment.TopRight;
			// 
			// bttnAddWeapon
			// 
			this.bttnAddWeapon.Anchor = ((System.Windows.Forms.AnchorStyles) ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
			this.bttnAddWeapon.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.bttnAddWeapon.Location = new System.Drawing.Point(516, 126);
			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.Anchor = ((System.Windows.Forms.AnchorStyles) ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
			this.bttnRemoveWeapon.Enabled = false;
			this.bttnRemoveWeapon.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.bttnRemoveWeapon.Location = new System.Drawing.Point(516, 210);
			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);
			// 
			// equipmentList
			// 
			this.equipmentList.Anchor = ((System.Windows.Forms.AnchorStyles) (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
						| System.Windows.Forms.AnchorStyles.Right)));
			this.equipmentList.Location = new System.Drawing.Point(102, 126);
			this.equipmentList.Name = "equipmentList";
			this.equipmentList.Size = new System.Drawing.Size(408, 108);
			this.equipmentList.TabIndex = 6;
			this.equipmentList.DoubleClick += new System.EventHandler(this.equipmentList_DoubleClick);
			this.equipmentList.SelectedIndexChanged += new System.EventHandler(this.equipmentList_SelectedIndexChanged);
			// 
			// bttnReplaceWeapon
			// 
			this.bttnReplaceWeapon.Anchor = ((System.Windows.Forms.AnchorStyles) ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
			this.bttnReplaceWeapon.Enabled = false;
			this.bttnReplaceWeapon.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.bttnReplaceWeapon.Location = new System.Drawing.Point(516, 182);
			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);
			// 
			// bttnEditWeapon
			// 
			this.bttnEditWeapon.Anchor = ((System.Windows.Forms.AnchorStyles) ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
			this.bttnEditWeapon.Enabled = false;
			this.bttnEditWeapon.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.bttnEditWeapon.Location = new System.Drawing.Point(516, 154);
			this.bttnEditWeapon.Name = "bttnEditWeapon";
			this.bttnEditWeapon.Size = new System.Drawing.Size(88, 22);
			this.bttnEditWeapon.TabIndex = 11;
			this.bttnEditWeapon.Text = "edit";
			this.bttnEditWeapon.Click += new System.EventHandler(this.bttnEditWeapon_Click);
			// 
			// lblPoints
			// 
			this.lblPoints.Location = new System.Drawing.Point(358, 8);
			this.lblPoints.Name = "lblPoints";
			this.lblPoints.Size = new System.Drawing.Size(88, 21);
			this.lblPoints.TabIndex = 12;
			this.lblPoints.Text = "(points)";
			// 
			// FrmUnit
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(616, 314);
			this.Controls.Add(this.lblPoints);
			this.Controls.Add(this.bttnEditWeapon);
			this.Controls.Add(this.bttnReplaceWeapon);
			this.Controls.Add(this.equipmentList);
			this.Controls.Add(this.bttnRemoveWeapon);
			this.Controls.Add(this.bttnAddWeapon);
			this.Controls.Add(this.lblEquip);
			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";
			this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.FrmUnit_FormClosing);
			((System.ComponentModel.ISupportInitialize) (this.statsGrid)).EndInit();
			((System.ComponentModel.ISupportInitialize) (this.unitSize)).EndInit();
			this.ResumeLayout(false);
			this.PerformLayout();

		}
		#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 equipmentList_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			SetButtonsEnabledState();
		}

		private void SetButtonsEnabledState()
		{

			UnitEquipmentItem equipItem = GetSelectedUnitEquipmentItem();
			bttnReplaceWeapon.Enabled = (equipItem != null && equipItem.HasAlternatives());
			bttnEditWeapon.Enabled = (equipItem != null);
			bttnRemoveWeapon.Enabled = (equipItem != null && !equipItem.IsRequired);
		}

		private void unit_UnitEquipmentAmountChanged(WarFoundryObject obj, double oldValue, double newValue)
		{
			if (obj is UnitEquipmentItem)
			{
				UnitEquipmentItem equip = (UnitEquipmentItem) obj;
				UnitEquipmentChoice equipChoice = GetEquipmentChoice(equip);

				if (newValue == 0)
				{
					equipmentList.Items.Remove(equipChoice);
				}
				else
				{
					int idx = equipmentList.Items.IndexOf(equipChoice);

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

		private void EditWeapon()
		{
			FrmEditUnitEquipment editEquip = new FrmEditUnitEquipment(Unit, GetSelectedUnitEquipmentItem(), commandStack);
			editEquip.ShowDialog(this);
		}

		private UnitEquipmentItem GetSelectedUnitEquipmentItem()
		{
			UnitEquipmentChoice selectedItem = GetSelectedUnitEquipmentChoice();
			UnitEquipmentItem equipItem = null;

			if (selectedItem!=null)
			{
				equipItem = selectedItem.Item;
			}

			return equipItem;
		}

		private UnitEquipmentChoice GetSelectedUnitEquipmentChoice()
		{
			return (UnitEquipmentChoice) equipmentList.SelectedItem;
		}

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

		private void equipmentList_DoubleClick(object sender, System.EventArgs e)
		{
			EditWeapon();
		}

		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 SetUnitEquipmentNumericAmountCommand(unit, GetSelectedUnitEquipmentItem(), 0));
		}

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

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

		private void FrmUnit_FormClosing(object sender, FormClosingEventArgs e)
		{
			UpdateUnitName();
			UpdateUnitSize();
		}
	}
}