///
/// Copyright (c) 2017 Sensus Slovensko a.s.
///
using System;
using System.Windows.Forms;
using log4net;
using TBF.Resources;

namespace TBF.Rig.DataEntry.StandardCamera
{
	public partial class CycleEndForm : Form, GenericDevices.IHasCompleted
    {
		private static readonly ILog log = LogManager.GetLogger(typeof(CycleEndForm));

		/// <summary> Number of text boxes for serial numbers </summary>
        public readonly int WaterMetersCount;
        readonly int lineSize;

 		// To be retrieved after the form closes
        public string[] EndStateText;

		// Set to 'true' when the form closes
        public bool Completed { get { return completed; } }
		bool completed;

        int textBoxesCount;
        Label[] labels;
        TextBox[] textBoxes;


        /// <summary>
        /// Constructor
        /// </summary>
        /// <param name="waterMetersCount">Number of text boxes for serial numbers</param>
        public CycleEndForm()
        {
            InitializeComponent();

            this.Icon = Properties.Resources.TBF_icon;

            ControlBox = false;

            labels = new Label[]
				{
					label1,  label2,  label3,  label4,  label5,  label6,  label7,  label8,  label9,  label10,
					label11, label12, label13, label14, label15, label16, label17, label18, label19, label20,
					label21, label22, label23, label24,
				};
            textBoxes = new TextBox[]
				{
					textBox1,  textBox2,  textBox3,  textBox4,  textBox5,  textBox6,
					textBox7,  textBox8,  textBox9,  textBox10, textBox11, textBox12,
					textBox13, textBox14, textBox15, textBox16, textBox17, textBox18,
					textBox19, textBox20, textBox21, textBox22, textBox23, textBox24,
				};
            textBoxesCount = textBoxes.Length;
            this.WaterMetersCount = textBoxesCount;
            this.lineSize = textBoxesCount / 2;

            completed = false;
			StartForceCloseHandler();
		}

        /// <summary> Parameterless constructor for 3 watermeters </summary>
        public CycleEndForm(int waterMetersCount, int lineSize)
            : this()
        {
            this.WaterMetersCount = waterMetersCount;
            this.lineSize = lineSize;
            ShuffleTextBoxes(waterMetersCount, lineSize);
            EndStateText = new string[WaterMetersCount];
        }

        /// <summary>
        /// Make sure the layout of labels/text boxes on the screen
        /// corresponds to the layout of watermeters of the test bench.
        /// </summary>
        /// <param name="wmsCount">Number of watermeters</param>
        /// <param name="lineSize">Number of watermeters in one line</param>
        void ShuffleTextBoxes(int wmsCount, int lineSize)
        {
            for (int i = 0; i < textBoxesCount; i++)
            {
                labels[i].Visible = false;
                textBoxes[i].Visible = false;
            }

            if (wmsCount < textBoxesCount && lineSize > 0)
            {
                int nrLines;
                int realLineSize;
                if (WaterMetersCount <= 6)
                {
                    realLineSize = WaterMetersCount;
                    nrLines = 1;
                }
                else
                {
                    nrLines = (wmsCount + lineSize - 1) / lineSize;
                    realLineSize = lineSize;
                }
                int gap = (textBoxesCount - wmsCount) / nrLines;

                int dest = 0;
                for (int l = 0; l < nrLines; l++)
                {
                    for (int i = 0; i < realLineSize; i++)
                    {
                        labels[dest] = labels[l * lineSize + l * gap + i];
                        textBoxes[dest] = textBoxes[l * lineSize + l * gap + i];
                        labels[dest].Visible = true;
                        textBoxes[dest].Visible = true;
                        dest++;
                    }
                }
                textBoxesCount = wmsCount;

                Height = 60 + 36 * realLineSize;
            }
        }

		private void CycleEndForm_Load(object sender, EventArgs e)
		{
			Localize();
		}

		void Localize()
		{
			Text = Strings.Data;
            okButton.Text = Strings.OkBtnText;

            for (int i = 0; i < WaterMetersCount; i++)
            {
                labels[i].Text = string.Format("{0} {1}:", Strings.Water_Meter, (i + 1).ToString());
            }
		}

		private void okButton_Click(object sender, EventArgs e)
		{
            for (int i = 0; i < WaterMetersCount; i++)
            {
                EndStateText[i] = textBoxes[i].Text;
            }

			completed = true;
			Close();
		}

		#region Forced close handling

		public void StartForceCloseHandler()
		{
			UiBridge.Bridge.CloseModelessFormHandler += delegate(object sender, EventArgs args)
			{
				if (InvokeRequired) { Invoke(new EventHandler<EventArgs>(OnForceClose), sender, args); }
				else OnForceClose(sender, args);
			};
		}

		void OnForceClose(object sender, EventArgs args)
		{
			DialogResult = DialogResult.Cancel;
			Close();
		}

		#endregion
	}
}