Manage YouTube using C# and Youtube API 1.6

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Google.GData.Client;
using Google.GData.Extensions;
using Google.GData.YouTube;
using Google.GData.Extensions.MediaRss;
using Google.YouTube;

namespace Manager
{
    public partial class UserAccount : Form
    {
        public UserAccount()
        {
            InitializeComponent();
        }

        //variables
        #region variables

        AddNewPlaylist newpl;

        YouTubeRequestSettings settings;
        YouTubeRequest request;

        Feed<Video> videofeed;
        Feed<Playlist> playlistfeed;

        Playlist p;

        //insert your dev key here
        string devkey = "";
        string username;

        public string Username
        {
            get { return username; }
            set { username = value; }
        }
        string password;

        public string Password
        {
            get { return password; }
            set { password = value; }
        }
        string feedUrl;

        int lvcount = 0;
        int videofeedcount = 0;
        int videocount = 0;
        int selindex = 0;
        int totalpages = 0;
        int curpage = 1;
        int choice = 0;

        string[] medialocations;
        string[] thumblocations;
        string[] descriptions;
        string[] titles;
        string[] videoIDs;

        bool clicked = false;
        string wait = "";

        string playlisttitle = "";
        string playlistsummary = "";

        #endregion

        //functions
        #region function

        //initialize
        public void InitializeYouTube()
        {
            settings = new YouTubeRequestSettings("You Manager", devkey, username, password);
            request = new YouTubeRequest(settings);

            feedUrl = "";
            medialocations = new string[25];
            thumblocations = new string[25];
            descriptions = new string[25];
            titles = new string[25];
            videoIDs = new string[25];
        }

        //trim username
        public string GetUserName()
        {
            string newusername = "";
            int i = 0;
            if (username.Contains("@"))
            {
                foreach (char ch in username)
                {

                    if (ch == '@')
                    { break; }
                    i++;
                }
                newusername = username.Substring(0, i);
            }
            else
                newusername = username;
            return newusername;
        }

        //get playlist
        public void GetPlaylist()
        {
            string user = GetUserName();
            playlistfeed = request.GetPlaylistsFeed(user);
            if (playlistfeed.TotalResults == 0)
            {
                MessageBox.Show("You dont have any playlists");
                cmbVserviceType.SelectedIndex = 0;
            }
            else
            {
                cmbSubService.Items.Clear();
                foreach (Playlist pl in playlistfeed.Entries)
                {
                    cmbSubService.Items.Add(pl.Title);
                }
                cmbSubService.SelectedIndex = 0;
            }
        }

        //get videos of playlist feed
        public void DisplayPlaylist()
        {
            int i = 0;
            foreach (Playlist pl in playlistfeed.Entries)
            {
                p = pl;
                if (i == cmbSubService.SelectedIndex)
                {
                    p = pl;
                    break;
                }
                i++;
            }

            string[] temp = p.Id.Split(':');
            int ind = temp.GetUpperBound(0);
            feedUrl = "http://gdata.youtube.com/feeds/api/playlists/"+temp[ind]+"?v=2";
            Clipboard.SetText(feedUrl);
            GetVideoFeeds();
            /*Feed<PlayListMember> pm = request.GetPlaylist(p);
            lvcount = 0;
            videocount = 1;
            lvDisplay.Items.Clear();
            foreach (Video entry in pm.Entries)
            {
                ListDisplay(entry);
                videocount++;
            }*/

        }

        //Get video Feeds
        public void GetVideoFeeds()
        {
            Clipboard.SetText(feedUrl);
            videofeed = request.Get<Video>(new Uri(feedUrl));
            videofeedcount = videofeed.TotalResults;
            lvDisplay.Items.Clear();
            if (videofeedcount == 0)
            {
                pbThumnail.ImageLocation = "";
                lbTitle.Text = "";
                rtDesc.Text = "";
                MessageBox.Show("There is nothing to display");
            }
            else
            {
                totalpages = videofeedcount / 25;
                if (videofeedcount % 25 != 0)
                    totalpages = totalpages + 1;
                curpage = 1;
                for (int i = 1; i <= totalpages; i++)
                {
                    cmbJmp.Items.Add(i.ToString());
                }
                videocount = 1;
                DisplayFeed();
            }
        }

        //Display video feeds
        public void DisplayFeed()
        {
            lblPageNumber.Text = "Page: " + curpage + " of " + totalpages;
            lvcount = 0;
            lvDisplay.Items.Clear();
            foreach (Video entry in videofeed.Entries)
            {
                ListDisplay(entry);
                videocount++;
            }
        }

        //lv Display List of videos
        public void ListDisplay(Video video)
        {

            int slno = videocount, i = 0;
            lvDisplay.Items.Add(slno.ToString());
            lvDisplay.Items[lvcount].SubItems.Add(video.Title);
            lvDisplay.Items[lvcount].SubItems.Add(video.RatingAverage.ToString());
            lvDisplay.Items[lvcount].SubItems.Add(video.ViewCount.ToString());
            titles[lvcount] = video.Title;
            descriptions[lvcount] = video.Description;
            videoIDs[lvcount] = video.VideoId;
            foreach (Google.GData.YouTube.MediaContent mediaContent in video.Contents)
            {
                if (i == 1)
                {
                    break;
                }

                medialocations[lvcount] = mediaContent.Url;
                i++;
            }
            i = 0;
            foreach (MediaThumbnail thumbnail in video.Thumbnails)
            {
                if (i == 0)
                {
                    thumblocations[lvcount] = thumbnail.Url;
                    break;
                }
            }

            lvcount++;
        }

        #endregion



        //events
        #region events


        //form load
        private void UserAccount_Load(object sender, EventArgs e)
        {
            cmbVserviceType.SelectedIndex = 0;
            InitializeYouTube();
            feedUrl = "http://gdata.youtube.com/feeds/api/users/default/uploads";
            
        }

        //selecting service type
        private void cmbVserviceType_SelectedIndexChanged(object sender, EventArgs e)
        {
            
            if (cmbVserviceType.SelectedIndex == 0)
            {
                rtDesc.ReadOnly = false;
                button2.Enabled = false;
                choice = 0;
                cmbSubService.Enabled = false;
                feedUrl = "http://gdata.youtube.com/feeds/api/users/default/uploads";
            }
            else if(cmbVserviceType.SelectedIndex==1)
            {
                rtDesc.ReadOnly = true;
                button2.Enabled = false;
                choice = 0;
                cmbSubService.Enabled = false;
                feedUrl = "http://gdata.youtube.com/feeds/api/users/default/favorites";
            }
            else if (cmbVserviceType.SelectedIndex == 2)
            {
                rtDesc.ReadOnly = true;
                button2.Enabled = true;
                choice = 1;
                cmbSubService.Enabled = true;
                //feedUrl = "http://gdata.youtube.com/feeds/api/users/default/playlists";
                GetPlaylist();
            }
            else
            {
                MessageBox.Show("Invalid choice");
            }
        }

        // get video feed
        private void btnGetVideos_Click(object sender, EventArgs e)
        {
            if (choice == 0)
            {
                GetVideoFeeds();
            }
            else if (choice == 1)
            {
                DisplayPlaylist();
                
            }
        }

        //lv display mouse click
        private void lvDisplay_MouseClick(object sender, MouseEventArgs e)
        {
            clicked = true;
            foreach (int i in lvDisplay.SelectedIndices)
            {
                selindex = i;
            }
            panel1.Enabled = true;
            lbTitle.Text = titles[selindex];
            pbThumnail.ImageLocation = thumblocations[selindex];
            rtDesc.Text = descriptions[selindex];
        }

        //play video
        private void pbThumnail_Click(object sender, EventArgs e)
        {
            YPlayer yp = new YPlayer();
            yp.Url = medialocations[selindex];
            yp.Show();
        }

        //page next
        private void btnNext_Click(object sender, EventArgs e)
        {
            clicked = false;
            int sindex = videofeed.StartIndex;
            string tempUrl = "";
            curpage++;
            if (curpage <= totalpages)
            {
                sindex += 25;
                videocount = sindex;
                if (feedUrl.Contains('?'))
                {
                    tempUrl = feedUrl + "&start-index=" + sindex.ToString();
                }
                else
                {
                    tempUrl = feedUrl + "?start-index=" + sindex.ToString();
                }
                Clipboard.SetText(tempUrl);
                videofeed = request.Get<Video>(new Uri(tempUrl));
                DisplayFeed();
            }
            else
            {
                MessageBox.Show("This is the last page");
                curpage--;
            }
        }

        //previous page
        private void btnPrev_Click(object sender, EventArgs e)
        {
            clicked = false;
            int sindex = videofeed.StartIndex;
            string tempUrl = "";
            curpage--;
            if (curpage >= 1)
            {
                sindex -= 25;
                videocount = sindex;
                if (feedUrl.Contains('?'))
                {
                    tempUrl = feedUrl + "&start-index=" + sindex.ToString();
                }
                else
                {
                    tempUrl = feedUrl + "?start-index=" + sindex.ToString();
                }
                Clipboard.SetText(tempUrl);
                videofeed = request.Get<Video>(new Uri(tempUrl));
                DisplayFeed();
            }
            else
            {
                MessageBox.Show("This is the first page");
                curpage++;
            }
        }

        //jump to page
        private void cmbJmp_SelectedIndexChanged(object sender, EventArgs e)
        {
            clicked = false;
            int sindex = videofeed.StartIndex;
            string tempUrl = "";
            int i = cmbJmp.SelectedIndex;
            if (i < 0 && i > totalpages - 1)
            {
                MessageBox.Show("Select an appropriate page");
            }
            else
            {
                sindex = i * 25 + 1;
                curpage = i + 1;
                videocount = sindex;
                if (feedUrl.Contains('?'))
                {
                    tempUrl = feedUrl + "&start-index=" + sindex.ToString();
                }
                else
                {
                    tempUrl = feedUrl + "?start-index=" + sindex.ToString();
                }
                Clipboard.SetText(tempUrl);
                videofeed = request.Get<Video>(new Uri(tempUrl));
                DisplayFeed();
            }
        }

        //deleting video
        private void button1_Click(object sender, EventArgs e)
        {
            if (clicked == true)
            {
                int index = 0;
                Video video = new Video();
                foreach (Video entry in videofeed.Entries)
                {
                    if (index == selindex)
                    {
                        video = entry;
                        break;
                    }
                    index++;
                }
                request.Delete<Video>(video);
                MessageBox.Show("Video Successfully deleted");
                clicked = false;
                GetVideoFeeds();

            }
            else
                MessageBox.Show("Select a video first");
        }

        //deleting playlist
        private void button2_Click(object sender, EventArgs e)
        {
            if (cmbVserviceType.SelectedIndex == 2)
            {
                int i = cmbSubService.SelectedIndex;
                int index = 0;
                foreach (Playlist dpl in playlistfeed.Entries)
                {
                    if (index == i)
                    {
                        p = dpl;
                        break;
                    }
                    index++;
                }
                request.Delete<Playlist>(p);
                MessageBox.Show("Playlist successfully deleted");
                GetPlaylist();
                button2.Enabled = false;
            }
            else
                MessageBox.Show("Select a playlist");

        }

        //updating video
        private void btnUpdate_Click(object sender, EventArgs e)
        {
            int index = 0;
            Video video = new Video();
            foreach (Video entry in videofeed.Entries)
            {
                if (index == selindex)
                {
                    video = entry;
                    break;
                }
                index++;
            }
            video.Description = rtDesc.Text;
            try
            {
                request.Update<Video>(video);
                MessageBox.Show("Video successfully Updated");
            }
            catch (Exception ex)
            {
                MessageBox.Show("Error");
            }
        }

        //add playlist
        private void button3_Click(object sender, EventArgs e)
        {
            newpl = new AddNewPlaylist();
            newpl.Show();

            wait = "AddPlaylist";

            timer1.Enabled = true;
            timer1.Interval = 1000 * 10;
        }

        //btn upload
        private void btnUpload_Click(object sender, EventArgs e)
        {
            Upload upload = new Upload();
            upload.Username = username;
            upload.Password = password;
            upload.Devkey = devkey;
            upload.Show();
        }

#endregion


        //times
        #region timer
        //add playlist
        private void timer1_Tick(object sender, EventArgs e)
        {
            playlistsummary=newpl.Playlistsummary;
            playlisttitle = newpl.Playlisttitle;
            if (playlisttitle != null)
            {
                    Playlist pl1 = new Playlist();
                    pl1.Title = playlisttitle;
                    pl1.Summary = playlistsummary;
                    Playlist cpl = request.Insert<Playlist>(new Uri("http://gdata.youtube.com/feeds/api/users/default/playlists"), pl1);
                    PlayListMember pm = new PlayListMember();
                    MessageBox.Show("Playlist successfully created");
                    newpl.Done = true;
                    newpl.Close();
                    timer1.Enabled = false;
            }
        }
        #endregion

        

        
    }
}