public string GetChannelPlaylist(string channelName)
{
// Load the 'uploaded' playlist
ChannelsResource.ListRequest channelPlaylistIDReq = YouTubeService.Channels.List("contentDetails");
channelPlaylistIDReq.ForUsername = channelName;
ChannelListResponse channelPlaylistIDResp = channelPlaylistIDReq.Execute();
return(channelPlaylistIDResp.Items[0].ContentDetails.RelatedPlaylists.Uploads);
}
public static string GetChannelUploadsPlaylistId(Subscription sub)
{
ChannelsResource.ListRequest listRequest = Service.Channels.List("contentDetails");
listRequest.Id = sub.ChannelId;
ChannelListResponse response = listRequest.Execute();
if (response.Items.Count <= 0)
{
return(null);
}
return(response.Items.FirstOrDefault().ContentDetails.RelatedPlaylists.Uploads);
}
private IEnumerable <Video> GetSubscriptionLatestVideosAsync(Subscription subscription)
{
var latestVideosToGrab = 25;
var youtubeService = new YouTubeService(new BaseClientService.Initializer()
{
HttpClientInitializer = Credental,
ApplicationName = this.GetType().ToString()
});
var test1 = new ChannelsResource.ListRequest(youtubeService, "contentDetails");
test1.MaxResults = 1;
test1.Id = subscription.Snippet.ResourceId.ChannelId;
var test2 = test1.Execute();
var test3 = test2.Items;
if (!(test3.Count <= 0))
{
var uploadPlaylistId = test3[0].ContentDetails.RelatedPlaylists.Uploads;
var playlistRequest = youtubeService.PlaylistItems.List("snippet");
playlistRequest.MaxResults = latestVideosToGrab;
playlistRequest.PlaylistId = uploadPlaylistId;
var test4 = playlistRequest.Execute();
var idList = new List <string>();
foreach (var pl in test4.Items)
{
idList.Add(pl.Snippet.ResourceId.VideoId);
}
var videosRequest = youtubeService.Videos.List("snippet,contentDetails,statistics");
videosRequest.MaxResults = latestVideosToGrab;
videosRequest.Id = string.Join(",", idList);
var test5 = videosRequest.Execute();
var videoList = test5.Items;
return(videoList);
}
else
{
return(new List <Video>());
}
}
public YoutubeChannelNodeState(YoutubeChannelItem item)
{
Info = item.Info as SearchResult;
if (item.Metadata != null)
{
ThumbString = System.Convert.ToBase64String(item.Metadata.Thumbnail.ImageData);
}
else
{
ThumbString = null;
}
ChannelsResource.ListRequest listRequest = new ChannelsResource.ListRequest(YoutubeViewModel.Youtube, "statistics");
listRequest.Id = item.ChannelId;
ChannelListResponse response = listRequest.Execute();
if (response.Items.Count > 0)
{
Statistics = response.Items[0].Statistics;
}
}
public YoutubeChannelNodeState(YoutubeChannelItem item)
{
Info = item.Info as SearchResult;
if (item.Metadata != null)
{
ThumbString = System.Convert.ToBase64String(item.Metadata.Thumbnail.ImageData);
}
else
{
ThumbString = null;
}
ChannelsResource.ListRequest listRequest = new ChannelsResource.ListRequest(YoutubeViewModel.Youtube, "statistics");
listRequest.Id = item.ChannelId;
ChannelListResponse response = listRequest.Execute();
if (response.Items.Count > 0)
{
Statistics = response.Items[0].Statistics;
}
}
public void Process()
{
try
{
ChannelsResource.ListRequest channelListRequest = _youtube.Channels.List("id");
// Test if user put user name instead of channel id
channelListRequest.ForUsername = _channelId;
ChannelListResponse channelsListResponse = channelListRequest.Execute();
string channelId = "0";
if (channelsListResponse.Items.Count != 0)
{
channelId = channelsListResponse.Items[0].Id;
}
//User put correct channel ID
SearchResource.ListRequest listRequest = _youtube.Search.List("snippet");
if (channelId == "0") // cant find channel id from user name
{
listRequest.ChannelId = _channelId; //
}
else // cand find channel id from user name
{
listRequest.ChannelId = channelId;
}
listRequest.MaxResults = 50;
listRequest.Type = "video";
listRequest.PublishedAfter = _assessment.StartDate;
listRequest.PublishedBefore = _assessment.EndDate;
// Get all uploaded videos and store to uploadedVideos
SearchListResponse resp = listRequest.Execute();
IList <SearchResult> uploadedVideos = resp.Items;
string nextPageToken = resp.NextPageToken;
while (nextPageToken != null)
{
listRequest.PageToken = nextPageToken;
SearchListResponse respPage = listRequest.Execute();
var resultsPage = respPage.Items;
foreach (SearchResult i in resultsPage)
{
uploadedVideos.Add(i);
}
nextPageToken = respPage.NextPageToken;
if (uploadedVideos.Count == Int32.Parse(Properties.Resources._api_youtube_maximum_videos))// Prevent excessive use of API calls
{
break;
}
}
// Aggregate data
foreach (SearchResult video in uploadedVideos)
{
// video.Id
VideosResource.ListRequest vidReq = _youtube.Videos.List("statistics");
vidReq.Id = video.Id.VideoId;
VideoListResponse vidResp = vidReq.Execute();
Video item;
if (vidResp.Items.Count != 0)
{
item = vidResp.Items[0];
if (item.Statistics.LikeCount != null)
{
_totalLikes += (ulong)item.Statistics.LikeCount;
}
if (item.Statistics.DislikeCount != null)
{
_totalDislikes += (ulong)item.Statistics.DislikeCount;
}
if (item.Statistics.ViewCount != null)
{
_totalViews += (ulong)item.Statistics.ViewCount;
}
}
}
_totalVideos += uploadedVideos.Count;
// Grab number of subscribers
ChannelsResource.ListRequest channelReq = _youtube.Channels.List("statistics");
channelReq.Id = channelId;
ChannelListResponse channelResp = channelReq.Execute();
if (channelResp.Items.Count != 0)
{
if (channelResp.Items[0].Statistics.SubscriberCount != null)
{
_subscribers += (ulong)channelResp.Items[0].Statistics.SubscriberCount;
}
}
// Save to Excel
SaveToExcelPackage();
}
catch (Exception ex)
{
Log.LogError(this.GetType().Name + " - " + System.Reflection.MethodBase.GetCurrentMethod().Name, ex);
throw ex;
}
}
/// <summary>
/// Test the time elapsed in different API operations, in order to evaluate performance.
/// </summary>
/// <param name="maxItemsQuantity"></param>
/// <returns></returns>
public TimeElapsedResult TestOperationsTimeElapsed(int maxItemsQuantity, string searchTerm)
{
// Counters
TimeElapsedResult result = new TimeElapsedResult();
var youtube = new YouTubeService(new BaseClientService.Initializer());
SearchResource.ListRequest listRequest = youtube.Search.List("snippet");
listRequest.Fields = "items(id, snippet(title, description, publishedAt, thumbnails, channelId, channelTitle))";
listRequest.Key = API_KEY;
listRequest.Type = ResourceTypes.Video;
listRequest.MaxResults = MAX_RESULTS_PER_PAGE;
if (!string.IsNullOrEmpty(LOCATION))
{
listRequest.Location = LOCATION;
}
if (!string.IsNullOrEmpty(LOCATION_RADIUS))
{
listRequest.LocationRadius = LOCATION_RADIUS;
}
listRequest.Q = searchTerm;
listRequest.Order = SearchResource.ListRequest.OrderEnum.Date;
var stopwatch = Stopwatch.StartNew();
SearchListResponse searchResponse = listRequest.Execute();
result.ElapsedSearch.Add(stopwatch.ElapsedMilliseconds);
List <SearchResult> results = new List <SearchResult>();
List <string> videosIds = new List <string>();
List <string> channelIds = new List <string>();
int currentCounter = 0;
while (searchResponse.Items.Count > 0 && currentCounter < maxItemsQuantity)
{
videosIds.AddRange(searchResponse.Items.Select(v => v.Id.VideoId));
channelIds.AddRange(searchResponse.Items.Select(v => v.Snippet.ChannelId));
results.AddRange(searchResponse.Items);
// Gets oldest element
var oldest = searchResponse.Items.OrderBy(i => i.Snippet.PublishedAt).FirstOrDefault();
// Avoids getting the oldest again
listRequest.PublishedBefore = oldest.Snippet.PublishedAt.Value.AddSeconds(-1);
currentCounter += searchResponse.Items.Count;
if (currentCounter < maxItemsQuantity)
{
// Performs the search
stopwatch = Stopwatch.StartNew();
searchResponse = listRequest.Execute();
result.ElapsedSearch.Add(stopwatch.ElapsedMilliseconds);
}
}
// Retrieves videos recording details (location)
List <string> videosToRetrieve = videosIds.Take(50).ToList();
videosIds = videosIds.Skip(50).ToList();
while (videosToRetrieve.Count > 0)
{
VideosResource.ListRequest videosRequest = youtube.Videos.List("recordingDetails");
videosRequest.Key = API_KEY;
videosRequest.MaxResults = MAX_RESULTS_PER_PAGE;
videosRequest.Id = string.Join(",", videosToRetrieve.ToArray());
stopwatch = Stopwatch.StartNew();
VideoListResponse videosResponse = videosRequest.Execute();
result.ElapsedVideo.Add(stopwatch.ElapsedMilliseconds);
videosToRetrieve = videosIds.Take(50).ToList();
videosIds = videosIds.Skip(50).ToList();
}
// Retrieves channels
List <string> channelsToRetrieve = channelIds.Take(50).ToList();
channelIds = channelIds.Skip(50).ToList();
while (channelsToRetrieve.Count > 0)
{
ChannelsResource.ListRequest channelRequest = youtube.Channels.List("snippet");
channelRequest.Key = API_KEY;
channelRequest.MaxResults = MAX_RESULTS_PER_PAGE;
channelRequest.Id = string.Join(",", channelsToRetrieve.ToArray());
stopwatch = Stopwatch.StartNew();
ChannelListResponse channelsResponse = channelRequest.Execute();
result.ElapsedChannel.Add(stopwatch.ElapsedMilliseconds);
channelsToRetrieve = channelIds.Take(50).ToList();
channelIds = channelIds.Skip(50).ToList();
}
result.Results = results;
return(result);
}
/// <summary>
/// Retrieves a certain quantity of videos using oldest publish date criteria.
/// </summary>
/// <param name="maxItemsQuantity"></param>
/// <returns></returns>
public List <SearchResult> RetrieveVideosWithoutAPIPaging(int maxItemsQuantity, string searchTerm)
{
var youtube = new YouTubeService(new BaseClientService.Initializer());
SearchResource.ListRequest listRequest = youtube.Search.List("snippet");
listRequest.Fields = "items(id, snippet(title, description, publishedAt, thumbnails, channelId, channelTitle))";
listRequest.Key = API_KEY;
listRequest.Type = ResourceTypes.Video;
listRequest.MaxResults = MAX_RESULTS_PER_PAGE;
if (!string.IsNullOrEmpty(LOCATION))
{
listRequest.Location = LOCATION;
}
if (!string.IsNullOrEmpty(LOCATION_RADIUS))
{
listRequest.LocationRadius = LOCATION_RADIUS;
}
listRequest.Q = searchTerm;
listRequest.Order = SearchResource.ListRequest.OrderEnum.Date;
SearchListResponse searchResponse = listRequest.Execute();
List <SearchResult> results = new List <SearchResult>();
List <string> videosIds = new List <string>();
List <string> channelsWithoutName = new List <string>();
int amountWithoutChannelTitle = 0;
int amountWithoutChannelId = 0;
int currentCounter = 0;
while (searchResponse.Items.Count > 0 && currentCounter < maxItemsQuantity)
{
foreach (var item in searchResponse.Items)
{
videosIds.Add(item.Id.VideoId);
if (string.IsNullOrEmpty(item.Snippet.ChannelTitle))
{
channelsWithoutName.Add(item.Snippet.ChannelId);
amountWithoutChannelTitle++;
}
if (string.IsNullOrEmpty(item.Snippet.ChannelId))
{
amountWithoutChannelId++;
}
}
results.AddRange(searchResponse.Items);
// Gets oldest element
var oldest = searchResponse.Items.OrderBy(i => i.Snippet.PublishedAt).FirstOrDefault();
// Avoids getting the oldest again
listRequest.PublishedBefore = oldest.Snippet.PublishedAt.Value.AddSeconds(-1);
currentCounter += searchResponse.Items.Count;
if (currentCounter < maxItemsQuantity)
{
// Performs the search
searchResponse = listRequest.Execute();
}
}
// Retrieves videos recording details (location)
VideosResource.ListRequest videosRequest = youtube.Videos.List("recordingDetails");
videosRequest.Key = API_KEY;
videosRequest.MaxResults = MAX_RESULTS_PER_PAGE;
videosRequest.Id = string.Join(",", videosIds.Take(50).ToArray());
VideoListResponse videosResponse = videosRequest.Execute();
// Retrieves channels that don't have name
List <string> channelsToRetrieve = channelsWithoutName.Take(50).ToList();
channelsWithoutName = channelsWithoutName.Skip(50).ToList();
while (channelsToRetrieve.Count > 0)
{
ChannelsResource.ListRequest channelRequest = youtube.Channels.List("snippet");
channelRequest.Key = API_KEY;
channelRequest.MaxResults = MAX_RESULTS_PER_PAGE;
channelRequest.Id = string.Join(",", channelsToRetrieve.ToArray());
ChannelListResponse channelsResponse = channelRequest.Execute();
channelsToRetrieve = channelsWithoutName.Take(50).ToList();
channelsWithoutName = channelsWithoutName.Skip(50).ToList();
}
return(results);
}
