using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using IBBoard.Commands;
using IBBoard.WarFoundry.API;
using IBBoard.WarFoundry.API.Commands;

namespace IBBoard.WarFoundry
{
	/// <summary>
	/// Summary description for FrmEditUnitEquipment.
	/// </summary>
	public class FrmEditUnitEquipment : System.Windows.Forms.Form
	{
		private Unit unit;
		private UnitEquipmentItem equipItem;
		private EquipmentItem equip;
		private float equipAmount;
		private CommandStack commandStack;

		private System.Windows.Forms.NumericUpDown numEquipAmount;
		private System.Windows.Forms.Label lblPercent;
		private System.Windows.Forms.Label lblAmount;
		private System.Windows.Forms.Button bttnCancel;
		private System.Windows.Forms.Button bttnOkay;
		private System.Windows.Forms.CheckBox cbEquipAll;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public FrmEditUnitEquipment(Unit unit, UnitEquipmentItem equipItem, CommandStack stack)
		{
			commandStack = stack;
			this.unit = unit;
			this.equipItem = equipItem;
			equip = equipItem.EquipmentItem;
			InitializeComponent();
			this.Text = equip.Name + " for " + unit.Name;
			equipAmount = unit.GetEquipmentAmount(equip.ID);

			if (equip.IsRatioLimit)
			{
				numEquipAmount.Minimum = (decimal)Math.Round(equip.MinNumber * 100, 2);
				numEquipAmount.Maximum = (decimal)Math.Round(equip.MaxNumber * 100, 2);
				numEquipAmount.Value = (decimal)Math.Round(equipAmount * 100, 2);
				cbEquipAll.Enabled = false;
				lblPercent.Visible = true;
				numEquipAmount.Width = 120;
			}
			else
			{
				numEquipAmount.Minimum = (decimal)(equip.MinNumber != -1 ? equip.MinNumber : unit.Size);
				numEquipAmount.Maximum = (decimal)(equip.MaxNumber != -1 ? equip.MaxNumber : unit.Size);
				numEquipAmount.Value = (decimal)(equipAmount == -1 ? unit.Size : equipAmount);
				cbEquipAll.Checked = (equipAmount == -1);
				cbEquipAll.Enabled = (equip.MaxNumber == -1 && equip.MinNumber != -1);
				numEquipAmount.Enabled = !cbEquipAll.Checked && equip.MinNumber != -1;
				numEquipAmount.Width = 144;
			}

			bttnOkay.Enabled = false;
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			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.numEquipAmount = new System.Windows.Forms.NumericUpDown();
			this.lblPercent = new System.Windows.Forms.Label();
			this.lblAmount = new System.Windows.Forms.Label();
			this.bttnCancel = new System.Windows.Forms.Button();
			this.bttnOkay = new System.Windows.Forms.Button();
			this.cbEquipAll = new System.Windows.Forms.CheckBox();
			((System.ComponentModel.ISupportInitialize)(this.numEquipAmount)).BeginInit();
			this.SuspendLayout();
			// 
			// numEquipAmount
			// 
			this.numEquipAmount.Location = new System.Drawing.Point(88, 8);
			this.numEquipAmount.Name = "numEquipAmount";
			this.numEquipAmount.Size = new System.Drawing.Size(144, 20);
			this.numEquipAmount.TabIndex = 0;
			this.numEquipAmount.ValueChanged += new System.EventHandler(this.numEquipAmount_ValueChanged);
			// 
			// lblPercent
			// 
			this.lblPercent.Location = new System.Drawing.Point(208, 8);
			this.lblPercent.Name = "lblPercent";
			this.lblPercent.Size = new System.Drawing.Size(16, 16);
			this.lblPercent.TabIndex = 1;
			this.lblPercent.Text = "%";
			this.lblPercent.Visible = false;
			// 
			// lblAmount
			// 
			this.lblAmount.Location = new System.Drawing.Point(8, 8);
			this.lblAmount.Name = "lblAmount";
			this.lblAmount.Size = new System.Drawing.Size(72, 23);
			this.lblAmount.TabIndex = 2;
			this.lblAmount.Text = "amount";
			this.lblAmount.TextAlign = System.Drawing.ContentAlignment.TopRight;
			// 
			// bttnCancel
			// 
			this.bttnCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
			this.bttnCancel.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.bttnCancel.Location = new System.Drawing.Point(160, 64);
			this.bttnCancel.Name = "bttnCancel";
			this.bttnCancel.TabIndex = 3;
			this.bttnCancel.Text = "cancel";
			this.bttnCancel.Click += new System.EventHandler(this.bttnCancel_Click);
			// 
			// bttnOkay
			// 
			this.bttnOkay.Enabled = false;
			this.bttnOkay.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.bttnOkay.Location = new System.Drawing.Point(8, 64);
			this.bttnOkay.Name = "bttnOkay";
			this.bttnOkay.TabIndex = 4;
			this.bttnOkay.Text = "okay";
			this.bttnOkay.Click += new System.EventHandler(this.bttnOkay_Click);
			// 
			// cbEquipAll
			// 
			this.cbEquipAll.Enabled = false;
			this.cbEquipAll.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.cbEquipAll.Location = new System.Drawing.Point(88, 32);
			this.cbEquipAll.Name = "cbEquipAll";
			this.cbEquipAll.TabIndex = 5;
			this.cbEquipAll.Text = "equip all";
			this.cbEquipAll.CheckedChanged += new System.EventHandler(this.cbEquipAll_CheckedChanged);
			// 
			// FrmEditUnitEquipment
			// 
			this.AcceptButton = this.bttnOkay;
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.CancelButton = this.bttnCancel;
			this.ClientSize = new System.Drawing.Size(240, 92);
			this.ControlBox = false;
			this.Controls.Add(this.cbEquipAll);
			this.Controls.Add(this.bttnOkay);
			this.Controls.Add(this.bttnCancel);
			this.Controls.Add(this.lblAmount);
			this.Controls.Add(this.numEquipAmount);
			this.Controls.Add(this.lblPercent);
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
			this.Name = "FrmEditUnitEquipment";
			this.ShowInTaskbar = false;
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
			this.Text = "FrmEditUnitEquipment";
			((System.ComponentModel.ISupportInitialize)(this.numEquipAmount)).EndInit();
			this.ResumeLayout(false);

		}
		#endregion

		private void bttnOkay_Click(object sender, System.EventArgs e)
		{
			if (setValue())
			{
				this.Close();
			}
		}

		private bool setValue()
		{			
			if ((!numEquipAmount.Enabled || numEquipAmount.Value == 0) && !cbEquipAll.Checked && unit.GetEquipmentAmount(equip.ID) != 0)
			{
				if (equipItem.IsRequired)
				{
					MessageBox.Show(this, "This item is required and cannot be removed. It must have a quantity of at least one or be replaced by an alternative.", "Required item", MessageBoxButtons.OK, MessageBoxIcon.Warning);
					return false;
				}
				else
				{
					DialogResult dr = MessageBox.Show(this, "This will remove the item from the unit. Continue?", "Confirm remove", MessageBoxButtons.YesNo, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1);

					if (dr!=DialogResult.Yes)
					{
						return false;
					}
				}
			}

			if (cbEquipAll.Checked)
			{
				if (equipAmount!=-1)
				{
					commandStack.Execute(new SetUnitEquipmentAmountCommand(unit, equip, -1));
				}
			}
			else if (numEquipAmount.Value != (decimal)equipAmount)
			{
				if (equip.IsRatioLimit)
				{
					commandStack.Execute(new SetUnitEquipmentAmountCommand(unit, equip, (float)((double)numEquipAmount.Value / 100.0)));
				}
				else
				{
					commandStack.Execute(new SetUnitEquipmentAmountCommand(unit, equip, (float)numEquipAmount.Value));
				}
			}

			return true;
		}

		private void bttnCancel_Click(object sender, System.EventArgs e)
		{
			this.Close();
		}

		private void cbEquipAll_CheckedChanged(object sender, System.EventArgs e)
		{
			numEquipAmount.Enabled = !cbEquipAll.Checked && equip.MinNumber != -1;
			setOkayButton();
		}

		private void setOkayButton()
		{
			bttnOkay.Enabled = (cbEquipAll.Checked || (numEquipAmount.Enabled && (numEquipAmount.Value > 0 || !equipItem.IsRequired)));
		}

		private void numEquipAmount_ValueChanged(object sender, System.EventArgs e)
		{
			setOkayButton();
		}
	}
}