///
/// Copyright (c) 2021 Sensus Slovensko a.s.
///
using System;
using System.Collections.Generic;
using System.Windows.Forms;
using log4net;
using Common;
using OrderManagement.Resources;

namespace OrderManagement
{
    public partial class EditParametersCtrl : UserControl
	{
        static readonly ILog log = LogManager.GetLogger(typeof(EditParametersCtrl));

        public IParamsProvider ParamsProvider;
        Control[] editors;
        CfgUpdateFlags flags;

        public EditParametersCtrl()
		{
			InitializeComponent();
        }

        /// <summary>
        /// Constructor
        /// </summary>
        /// <param name="paramsProvider">Parameters provider implementing IComponentCfg and IParamsProvider</param>
        /// <param name="parents">A list of parents or null, null hides parentComboBox</param>
        public EditParametersCtrl(object paramsProvider)
            : this()
        {
            this.ParamsProvider = paramsProvider as IParamsProvider;
            if (this.ParamsProvider == null) throw(new ArgumentException("paramsProvider"));

            editors = new Control[this.ParamsProvider.ParamsCount()];
            for (int i = 0; i < this.ParamsProvider.ParamsCount(); i++)
            {
                ICollection<string> values = this.ParamsProvider.ParamValues(i);
                if (values == null)
                {
                    editors[i] = new TextBox();
                }
                else
                {
                    ComboBox cb = new ComboBox(); 
                    foreach (var v in values) cb.Items.Add(v);
                    editors[i] = cb;
                }
                editors[i].Visible = false;
                this.Controls.Add(editors[i]);
            }

            flags = CfgUpdateFlags.None;

            paramsListViewEx.SubItemClicked += new Common.Forms.SubItemEventHandler(paramsListViewEx_SubItemClicked);
            paramsListViewEx.SubItemEndEditing += new Common.Forms.SubItemEndEditingEventHandler(paramsListViewEx_SubItemEndEditing);
        }

		private void EntryFormCfgCtrl_Load(object sender, EventArgs e)
		{
            paramsListViewEx.Columns.Add(Strings.Parameter, 150);
            paramsListViewEx.Columns.Add(Strings.Value, 400);
			Redraw();
		}

		public void Closing()
		{
            /// Close CmdResponse handlers here
		}

		void Redraw()
		{
			if (ParamsProvider == null) return;			/// Control was not loaded, settings were not changed

            paramsListViewEx.Items.Clear();
            for (int i = 0; i < ParamsProvider.ParamsCount(); i++)
            {
                ListViewItem lvi = new ListViewItem(ParamsProvider.ParamName(i));
                lvi.SubItems.Add(ParamsProvider.ToString(i));
                lvi.Tag = i;
                paramsListViewEx.Items.Add(lvi);
            }
		}

		public void Unlock()
		{
            paramsListViewEx.Enabled = true;
		}

		public CfgUpdateFlags VerifyCfg(ref string message)
		{
            return CfgUpdateFlags.Error;
		}

		public CfgUpdateFlags UpdateCfg()
		{
            if (ParamsProvider == null) return CfgUpdateFlags.Error;	/// Control was not loaded, settings were not changed

            CfgUpdateFlags f = this.flags;

			return f;
		}

        private void paramsListViewEx_SubItemClicked(object sender, Common.Forms.SubItemEventArgs e)
        {
            if (e.SubItem != 1) return;
            int itemNr = (int)e.Item.Tag;
            paramsListViewEx.StartEditing(editors[itemNr], e.Item, e.SubItem);
        }

        private void paramsListViewEx_SubItemEndEditing(object sender, Common.Forms.SubItemEndEditingEventArgs e)
        {
            if (e.SubItem != 1) return;
            int itemNr = (int)e.Item.Tag;

            string message;
            if (ParamsProvider.ValidateParam(itemNr, e.DisplayText, out message))
            {
                flags |= ParamsProvider.UpdateParam(itemNr, e.DisplayText);
            }
            else
            {
                MessageBox.Show(message);
                e.DisplayText = e.Item.SubItems[e.SubItem].Text;
                e.Cancel = true;
            }
        }
	}
}