// Copyright (c) 2017- schick Informatik
// Description: select a new DG item from a selection of templates
//

using bsmd.database;
using ENI2.Controls;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows;
using System.Windows.Controls;

namespace ENI2.EditControls
{
    /// <summary>
    /// Interaction logic for NewDGItemDialog.xaml
    /// </summary>
    public partial class NewDGItemDialog : EditWindowBase
    {
        private List<HAZPosTemplate> _data = null;
        private static readonly object filterLock = new object();

        public NewDGItemDialog()
        {
            InitializeComponent();
        }

        public HAZPosTemplate SelectedTemplate
        {
            get
            {
                return this.listBoxDescription.SelectedItem as HAZPosTemplate;
            }
        }

        private void EditWindowBase_Loaded(object sender, RoutedEventArgs e)
        {
            // load combo boxes
            _data = LocalizedLookup.LoadHAZTemplates();
            this.listBoxDescription.ItemsSource = _data;
            this.comboBoxType.ItemsSource = Enum.GetValues(typeof(HAZPosTemplate.SublistType));
            this.OkVisible = false;
            this.AddVisible = true;
        }

        private void comboBoxType_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            FilterDescriptions();
        }

        private void listBoxDescription_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (this.listBoxDescription.SelectedItem is HAZPosTemplate selectedTemplate)
            {
                this.textBlockDescription.Text = selectedTemplate.Description;
                this.textBlockRemarks.Text = selectedTemplate.Comment;
            }
            else
            {
                this.textBlockDescription.Text = "";
                this.textBlockRemarks.Text = "";
            }
        }

        private void textBoxSearchDescription_TextChanged(object sender, TextChangedEventArgs e)
        {
            FilterDescriptions();
        }

        private void FilterDescriptions()
        {
            string searchText = this.textBoxSearchDescription.Text.Trim();
            
            lock (filterLock)
            {
                IEnumerable<HAZPosTemplate> filtered = _data;
                if (searchText.Length > 0)
                {
                    filtered = _data.Where(elem => elem.Description.ToUpperInvariant().Contains(searchText.ToUpperInvariant()));
                }
                if (this.comboBoxType.SelectedItem != null)
                {
                    HAZPosTemplate.SublistType sType = (HAZPosTemplate.SublistType)this.comboBoxType.SelectedItem;
                    filtered = filtered.Where(elem => elem.TemplateType == sType);
                }
                this.listBoxDescription.ItemsSource = filtered;
            }
            
        }

    }
}