using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Windows;
using System.Windows.Controls;

namespace WpfDemo
{
    public partial class DescriptionControl : UserControl
    {

        public string Header
        {
            get { return (string)GetValue(HeaderProperty); }
            set { SetValue(HeaderProperty, value); }
        }

        public static readonly DependencyProperty HeaderProperty =
            DependencyProperty.Register("Header", typeof(string), typeof(DescriptionControl), new PropertyMetadata(""));


        public string Description
        {
            get { return (string)GetValue(DescriptionProperty); }
            set { SetValue(DescriptionProperty, value); }
        }

        public static readonly DependencyProperty DescriptionProperty =
            DependencyProperty.Register("Description", typeof(string), typeof(DescriptionControl), new PropertyMetadata(""));


        public string Link
        {
            get { return (string)GetValue(LinkProperty); }
            set { SetValue(LinkProperty, value); }
        }

        public static readonly DependencyProperty LinkProperty =
            DependencyProperty.Register("Link", typeof(string), typeof(DescriptionControl), new PropertyMetadata(""));

        public string LinkText
        {
            get { return (string)GetValue(LinkTextProperty); }
            set { SetValue(LinkTextProperty, value); }
        }

        public static readonly DependencyProperty LinkTextProperty =
            DependencyProperty.Register("LinkText", typeof(string), typeof(DescriptionControl), new PropertyMetadata(""));

        public DescriptionControl()
        {
            InitializeComponent();
        }

        public void SetDescription(string value)
        {
            var lines = value.Replace("\r\n", "\n").Split('\n').ToList();

            // check the last line for url
            if (lines.Count > 0)
            {
                var lastLine = lines[lines.Count - 1];
                int urlIndex = lastLine.IndexOf("http");
                if (urlIndex != -1)
                {
                    lines.RemoveAt(lines.Count - 1);
                    this.Description = string.Join("\n", lines.ToArray()).TrimEnd('\n');
                    this.LinkText = lastLine.Substring(0, urlIndex);
                    this.Link = lastLine.Substring(urlIndex);
                    return;
                }
            }

            this.Description = value;
            this.LinkText = "";
            this.Link = "";
        }

        private void Hyperlink_Click(object sender, RoutedEventArgs e)
        {
            Process.Start(new ProcessStartInfo(Link));
            e.Handled = true;
        }
    }
}