using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace changeWallpaper
{

    public partial class Form1 : Form
    {
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        static extern int SystemParametersInfo(int uAction, int uParam, string lpvParam, int fuWinIni);
        const int SPI_SETDESKWALLPAPER = 20;
        const int SPIF_UPDATEINIFILE = 0x01;
        const int SPIF_SENDWININICHANGE = 0x02;
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            RegistryKey key = Registry.CurrentUser.OpenSubKey("Control Panel\\Desktop", true);
            key.SetValue(@"WallpaperStyle", "2");
            key.SetValue(@"TileWallpaper", "0");


            string localFilename = @"M:\funnybackground.jpg";
            /*
             * teraz jak zapisuje zamiast localFilename ten plik z internetu to sie tapeta nie chce ustawic. Ale jak ustawiam "statycznie" to, czyli
             * klikajac PPM -> ustaw tapete to sie ona ustawia :(
             * usypiam proces, daje 10 sekund na sciagniecie
            //Thread.Sleep(10000);
             */
            // pobieram i zapisuje zamiast localFilename
            Form1.DownloadRemoteImageFile("http://cdnm.tutorialchip.com/wp-content/uploads/2011/10/Create-a-Shiny-Bucket-Icon-520x520.png", localFilename);
            Thread.Sleep(10000);
            SetWallpaper(localFilename, 2, 0);

            string homeDirectory = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
            //string secondHomeDirectory = homeDirectory.Replace("\\","\\");
            MessageBox.Show(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile));
            //System.Enum.GetNames(GetType())
        }


        private static void DownloadRemoteImageFile(string uri, string fileName)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            if ((response.StatusCode == HttpStatusCode.OK ||
                response.StatusCode == HttpStatusCode.Moved ||
                response.StatusCode == HttpStatusCode.Redirect) &&
                response.ContentType.StartsWith("image", StringComparison.OrdinalIgnoreCase))
            {

                // if the remote file was found, download oit
                using (Stream inputStream = response.GetResponseStream())
                using (Stream outputStream = File.OpenWrite(fileName))
                {
                    byte[] buffer = new byte[4096];
                    int bytesRead;
                    do
                    {
                        bytesRead = inputStream.Read(buffer, 0, buffer.Length);
                        outputStream.Write(buffer, 0, bytesRead);
                    } while (bytesRead != 0);
                }
            }
        }

        private void SetWallpaper(string WallpaperLocation, int WallpaperStyle, int TileWallpaper)
        {
            // Sets the actual wallpaper
            SystemParametersInfo(20, 0, WallpaperLocation, 0x01 | 0x02);
            // Set the wallpaper style to streched (can be changed to tile, center, maintain aspect ratio, etc.
            RegistryKey rkWallPaper = Registry.CurrentUser.OpenSubKey("Control Panel\\Desktop", true);
            // Sets the wallpaper style
            rkWallPaper.SetValue("WallpaperStyle", WallpaperStyle);
            // Whether or not this wallpaper will be displayed as a tile
            rkWallPaper.SetValue("TileWallpaper", TileWallpaper);
            rkWallPaper.Close();
        }


    }
}