/// <summary>
/// Enumerates videos returned by the specified search query.
/// </summary>
/// <param name="searchQuery">The term to look for.</param>
/// <param name="firstPage">Sets how many page should be skipped from the beginning of the search.</param>
/// <param name="takePage">Limits how many page should be requested to complete the search.</param>
public async IAsyncEnumerable <Video> GetVideosAsync(string searchQuery, int firstPage, int takePage)
{
var encounteredVideoIds = new HashSet <string>();
for (var page = firstPage; page < firstPage + takePage; page++)
{
var response = await PlaylistResponse.GetSearchResultsAsync(_httpClient, searchQuery, page);
var countDelta = 0;
foreach (var video in response.GetVideos())
{
var videoId = video.GetId();
// Skip already encountered videos
if (!encounteredVideoIds.Add(videoId))
{
continue;
}
yield return(new Video(
videoId,
video.GetTitle(),
video.GetAuthor(),
video.GetChannelId(),
video.GetUploadDate(),
video.GetDescription(),
video.GetDuration(),
new ThumbnailSet(videoId),
video.GetKeywords(),
new Engagement(
video.GetViewCount(),
video.GetLikeCount(),
video.GetDislikeCount()
)
));
countDelta++;
}
// Videos loop around, so break when we stop seeing new videos
if (countDelta <= 0)
{
break;
}
}
}
/// <summary>
/// Enumerates videos returned by the specified search query.
/// </summary>
/// <param name="searchQuery">The term to look for.</param>
/// <param name="startPage">Sets how many page should be skipped from the beginning of the search.</param>
/// <param name="pageCount">Limits how many page should be requested to complete the search.</param>
public async IAsyncEnumerable <PlaylistVideo> GetVideosAsync(string searchQuery, int startPage, int pageCount)
{
var encounteredVideoIds = new HashSet <string>();
var continuationToken = "";
for (var page = 0; page < startPage + pageCount; page++)
{
var response = await PlaylistResponse.GetSearchResultsAsync(_httpClient, searchQuery, continuationToken);
if (page >= startPage)
{
foreach (var video in response.GetVideos())
{
var videoId = video.GetId();
// Skip already encountered videos
if (!encounteredVideoIds.Add(videoId))
{
continue;
}
yield return(new PlaylistVideo(
videoId,
video.GetTitle(),
video.GetAuthor(),
video.GetChannelId(),
video.GetDescription(),
video.GetDuration(),
video.GetViewCount(),
new ThumbnailSet(videoId)
));
}
}
continuationToken = response.TryGetContinuationToken();
if (string.IsNullOrEmpty(continuationToken))
{
break;
}
}
}