public static async Task <double> Average(this List <ViewStatistic> viewStatistic)
{
if (Token == null || Credentials == null)
{
throw new Exception("Token or credentials not found!");
}
double average = 0;
if (viewStatistic != null && viewStatistic.Count > 0)
{
var googleService = new GoogleService(Credentials);
googleService.SetToken(Token);
var channel = await googleService.GetChannels();
if (channel != null && channel.Items.Count > 0)
{
var startDate = DateTime.ParseExact(viewStatistic.FirstOrDefault().Date, "yyyy-MM-dd", CultureInfo.InvariantCulture);
var endDate = DateTime.ParseExact(viewStatistic.LastOrDefault().Date, "yyyy-MM-dd", CultureInfo.InvariantCulture);
var channelVideos = await googleService.GetChannelVideos(channel.Items.FirstOrDefault().Id, startDate, endDate);
if (channelVideos != null && channelVideos.PageInfo != null)
{
var totalVideos = channelVideos.PageInfo.TotalResults;
var totalViews = viewStatistic.Sum(t => t.Value);
average = totalViews / totalVideos;
}
}
}
return(average);
}
