///
/// Copyright (c) 2018 Sensus Slovensko a.s.
///
using System;
using System.Collections.Generic;
using System.Windows.Forms;
using log4net;
using Common;
using Config.Entities;
using TBF.BenchControl.Generic;
using TBF.Resources;

namespace TBF.BenchControl.Configs.ParamsProvider
{
	public partial class ComponentCfgCtrl : UserControl, IComponentCfgCtrl
	{
        static readonly ILog log = LogManager.GetLogger(typeof(ComponentCfgCtrl));

		public bool ShowMore { get { return false; } }


		IParamsProvider paramsProvider;
        /// 
        public IComponentCfg Config
		{
			get
            {
                return paramsProvider as IComponentCfg;
            }
			set
			{
                paramsProvider = value as IParamsProvider;
				Redraw();
			}
		}

        IList<string> parents;
        Control[] editors;
        CfgUpdateFlags flags;

        public ComponentCfgCtrl()
		{
			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 ComponentCfgCtrl(IParamsProvider paramsProvider, IList<string> parents)
            : this()
        {
            this.paramsProvider = paramsProvider;
            this.parents = parents;

            if (parents == null)
            {
                parentLabel.Visible = false;
                parentComboBox.Visible = false;
            }

            editors = new Control[paramsProvider.ParamsCount()];
            for (int i = 0; i < paramsProvider.ParamsCount(); i++)
            {
                ICollection<string> values = 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 Results.Forms.SubItemEventHandler(paramsListViewEx_SubItemClicked);
            paramsListViewEx.SubItemEndEditing += new Results.Forms.SubItemEndEditingEventHandler(paramsListViewEx_SubItemEndEditing);
        }

        void Localize()
        {
            componentClassLabel.Text = Strings.Component_class;
            nameLabel.Text = Strings.Name;
            parentLabel.Text = Strings.Parent_name;
        }

		private void EntryFormCfgCtrl_Load(object sender, EventArgs e)
		{
            Localize();
            paramsListViewEx.Columns.Add(Strings.Parameter, 210);
            paramsListViewEx.Columns.Add(Strings.Value, 210);
            if (parents != null)
            {
                foreach (var p in parents) parentComboBox.Items.Add(p);
            }
			Redraw();
		}

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

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

			componentClassTextBox.Text = Config.Factory.ClassName;
			nameTextBox.Text = Config.Name;

            if (parents != null) parentComboBox.Text = Config.ParentName;

            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()
		{
			nameTextBox.Enabled = true;
            if (parents != null) parentComboBox.Enabled = true;
            paramsListViewEx.Enabled = true;
		}

		public CfgUpdateFlags VerifyCfg(ref string message)
		{
            if (parents == null) return CfgUpdateFlags.None;

            /// Verify the parent
            foreach (var item in parentComboBox.Items)
            {
                if (parentComboBox.Text == item.ToString()) return CfgUpdateFlags.None;
            }

            message += Environment.NewLine + string.Format(Strings.Invalid_0, parentLabel.Text);
            return CfgUpdateFlags.Error;
		}

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

            CfgUpdateFlags f = this.flags;

            if (Config.Name != nameTextBox.Text)
            {
                Config.Name = nameTextBox.Text;
                f |= CfgUpdateFlags.RestartRqrd;
            }

            if (parents != null)
            {
                if (Config.ParentName != parentComboBox.Text)
                {
                    Config.ParentName = parentComboBox.Text;
                    f |= CfgUpdateFlags.RestartRqrd;
                }
            }

			return f;
		}

        private void paramsListViewEx_SubItemClicked(object sender, Results.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, Results.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;
            }
        }
	}
}