using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Interop;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using Image = System.Windows.Controls.Image;

namespace Cursach_1._3
{
    /// <summary>
    /// Логика взаимодействия для MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        string[,] rssData = null;
        string urlfinder;
        Dictionary<string, string> Channals = new Diction-ary<string, string>();
        Dictionary<int, string> chanalstack = new Diction-ary<int, string>();
        public string ProgramPath = Directo-ry.GetCurrentDirectory();
        public MainWindow()
        {
            InitializeComponent();

            var lines = File.ReadAllLines(ProgramPath + "\\" +"Chanals.txt"); // читаем построчно
            foreach (var line in lines)
            {
                var tokens = line.Split('=');
                var key = tokens[0].Trim();
                var value = string.Join("", to-kens.Skip(1)).Trim();
                Channals[key] = value;
            }

            int i = 0;

            foreach (string finder in Channals.Keys)
            {
                StackPanel stackPanel = new StackPanel { Width = 100, Height = 50 };

                Label label = new Label { Width = 100, Height = 50 };
                label.Content = finder;
                label.VerticalContentAlignment = VerticalA-lignment.Top;
                label.HorizontalAlignment = HorizontalAlign-ment.Left;
                label.FontWeight = FontWeights.Bold;
                stackPanel.Children.Add(label);

                chanalstack[i] = finder;

                channalsListBox.Items.Add(stackPanel);
                i++;
            }

        }

        public static BitmapImage ToBitmapImage(Bitmap bit-map)
        {
            using (var memory = new MemoryStream())
            {
                bitmap.Save(memory, ImageFormat.Png);
                memory.Position = 0;

                var bitmapImage = new BitmapImage();
                bitmapImage.BeginInit();
                bitmapImage.StreamSource = memory;
                bitmapImage.CacheOption = BitmapCacheOp-tion.OnLoad;
                bitmapImage.EndInit();
                bitmapImage.Freeze();

                return bitmapImage;
            }
        }

        private static string[,] getRssData(string channel)
        {
            System.Net.WebRequest myRequest = Sys-tem.Net.WebRequest.Create(channel);
            System.Net.WebResponse myResponse = myRe-quest.GetResponse();
            System.IO.Stream rssStream = myRe-sponse.GetResponseStream();
            System.Xml.XmlDocument rssDoc = new Sys-tem.Xml.XmlDocument();
            rssDoc.Load(rssStream);
            System.Xml.XmlNodeList rssItems = rssDoc.SelectNodes("rss/channel/item");
            String[,] tempRssData = new String[rssItems.Count, 4];
            for (int i = 0; i < rssItems.Count; i++)
            {
                System.Xml.XmlNode rssNode;
                rssNode = rssItems.Item(i).SelectSingleNode("title");
                if (rssNode != null)
                {
                    tempRssData[i, 0] = rssNode.InnerText;
                }
                else
                {
                    tempRssData[i, 0] = "";
                }

                rssNode = rssItems.Item(i).SelectSingleNode("description");

                if (rssNode != null)
                {
                    tempRssData[i, 1] = rssNode.InnerText;
                }
                else
                {
                    tempRssData[i, 1] = "";
                }

                rssNode = rssItems.Item(i).SelectSingleNode("link");
                if (rssNode != null)
                {
                    tempRssData[i, 2] = rssNode.InnerText;
                }
                else
                {
                    tempRssData[i, 2] = "";
                }

                rssNode = rssItems.Item(i).SelectSingleNode("enclosure");
                if (rssNode != null)
                {
                    string rssNodel = rssNode.OuterXml.Substring(16);
                    tempRssData[i, 3] = rssNodel.Substring(0, rssNodel.IndexOf('"'));
                }
                else
                {
                    tempRssData[i, 3] = "";
                }

            }
            return tempRssData;
        }

        private void refreshButton_Click(object sender, RoutedEventArgs e)
        {

            //

            //

            rssData = getRssData(channelTextBox.Text);

            contentListBox.Items.Clear();

            for (int i = 0; i < rssData.GetLength(0); i++)
            {
                if (rssData[i, 0] != null)
                {
                    StackPanel stackPanel = new StackPanel { Width = 520, Height = 200 };

                    Label label = new Label { Width = 520, Height = 50 };
                    label.Content = rssData[i, 0];
                    label.VerticalContentAlignment = Verti-calAlignment.Top;
                    label.HorizontalAlignment = Horizonta-lAlignment.Left;
                    label.FontWeight = FontWeights.Bold;
                    stackPanel.Children.Add(label);

                    try
                    {
                        Bitmap Picture = new Bitmap(new WebClient().OpenRead(rssData[i, 3].ToString()));
                        BitmapImage WorkImg = ToBit-mapImage(Picture);


                        stackPanel.Children.Add(new Image
                        {
                            Source = WorkImg,
                            Stretch = Stretch.Fill,
                            Width = 120,
                            Height = 80
                        });
                    }
                    catch
                    {
                        //MessageBox.Show("Error loading the image");
                    }

                    TextBlock TB = new TextBlock { Width = 520, Height = 100 };
                    TB.Text = rssData[i, 1];
                    TB.TextWrapping = TextWrapping.Wrap;
                    TB.TextAlignment = TextAlignment.Left;

                    stackPanel.Children.Add(TB);

                    contentListBox.Items.Add(stackPanel);
                }
            }
        }

        private void contentListBox_KeyDown(object sender, System.Windows.Input.KeyEventArgs e)
        {
            Pro-cess.Start(rssData[contentListBox.SelectedIndex, 2]);
        }

        private void addchannalsButton_Click(object sender, RoutedEventArgs e)
        {
            AddWindow newWindow = new AddWindow(this, Chan-nals, chanalstack);
            newWindow.Show();
        }

        private void channalsListBox_KeyDown(object sender, System.Windows.Input.KeyEventArgs e)
        {
            string keyfinder = cha-nalstack[channalsListBox.SelectedIndex];
            urlfinder = Channals[keyfinder];

            rssData = getRssData(urlfinder);

            contentListBox.Items.Clear();

            for (int i = 0; i < rssData.GetLength(0); i++)
            {
                if (rssData[i, 0] != null)
                {
                    StackPanel stackPanel = new StackPanel { Width = 520, Height = 200 };

                    Label label = new Label { Width = 520, Height = 50 };
                    label.Content = rssData[i, 0];
                    label.VerticalContentAlignment = Verti-calAlignment.Top;
                    label.HorizontalAlignment = Horizonta-lAlignment.Left;
                    label.FontWeight = FontWeights.Bold;
                    stackPanel.Children.Add(label);

                    try
                    {
                        Bitmap Picture = new Bitmap(new WebClient().OpenRead(rssData[i, 3].ToString()));
                        BitmapImage WorkImg = ToBit-mapImage(Picture);


                        stackPanel.Children.Add(new Image
                        {
                            Source = WorkImg,
                            Stretch = Stretch.Fill,
                            Width = 120,
                            Height = 80
                        });
                    }
                    catch
                    {
                        //MessageBox.Show("Error loading the image");
                    }

                    TextBlock TB = new TextBlock { Width = 520, Height = 100 };
                    TB.Text = rssData[i, 1];
                    TB.TextWrapping = TextWrapping.Wrap;
                    TB.TextAlignment = TextAlignment.Left;

                    stackPanel.Children.Add(TB);

                    contentListBox.Items.Add(stackPanel);
                }
            }
        }

        private void deletechannalButton_Click(object send-er, RoutedEventArgs e)
        {
            string keyfinder = cha-nalstack[channalsListBox.SelectedIndex];

            if (Channals[keyfinder] == urlfinder)
            {
                contentListBox.Items.Clear();
            }
            Channals.Remove(keyfinder);
            channalsListBox.Items.Clear();

            int i = 0;

            foreach (string finder in Channals.Keys)
            {
                StackPanel stackPanel = new StackPanel { Width = 100, Height = 50 };

                Label label = new Label { Width = 100, Height = 50 };
                label.Content = finder;
                label.VerticalContentAlignment = VerticalA-lignment.Top;
                label.HorizontalAlignment = HorizontalAlign-ment.Left;
                label.FontWeight = FontWeights.Bold;
                stackPanel.Children.Add(label);

                chanalstack[i] = finder;

                channalsListBox.Items.Add(stackPanel);
                i++;
            }


        }

        private void Window_Closing(object sender, Sys-tem.ComponentModel.CancelEventArgs e)
        {
            var stringbuilder = new StringBuilder();
            foreach (var kv in Channals)
            {
                stringbuild-er.AppendLine($"{kv.Key}={kv.Value}");
            }
            var text = stringbuilder.ToString();

            if (text != null ^ text != "" ^ text != " ")
            {
                using (StreamWriter writer = new StreamWrit-er(ProgramPath + "\\" + "Chanals.txt", false, Sys-tem.Text.Encoding.Default))
                {
                    writer.WriteLine(text);
                }
            }
        }
    }
}