/// <summary>
/// Save ResultVideo
/// </summary>
/// <param name="video"></param>
public ResultVideo Save(ResultVideo video)
{
var videoDb = _mapper.Map <ResultVideoDb>(video);
return(_mapper.Map <ResultVideo>(_videoRepository.Save(videoDb)));
}
/// <summary>
/// Algorithm search video
/// </summary>
/// <param name="searchRequest"></param>
/// <param name="userId"></param>
/// <returns></returns>
public async Task <IEnumerable <ResultVideo> > SearchRunAsync(SearchRequest searchRequest, string userId)
{
var result = _validator.Validate(searchRequest, ruleSet: "AddRequest, Search");
if (!result.IsValid)
{
return(null);
}
var requestService = _serviceFactory.CreateSearchRequestService();
var storyService = _serviceFactory.CreateStoryService();
var videoService = _serviceFactory.CreateVideoService();
var resultVideos = new List <ResultVideo>();
searchRequest.CacheId = GenerateCacheId(searchRequest);
//Сheck cache
var cacheResult = _cache.GetValue(searchRequest.CacheId);
if (cacheResult != null)
{
//Get videos list from cache
resultVideos = cacheResult;
//Update cache for search request for refresh storage time in the cache
_cache.Update(searchRequest.CacheId, resultVideos);
}
else
{
//Search in Youtube service
resultVideos = await SearchInYoutubeAsync(searchRequest);
//Add result to cache
_cache.Add(searchRequest.CacheId, resultVideos);
}
//Save ResultVideo and SearchRequest if does not exist
var videoFromDb = new ResultVideo();
if (requestService.Exists(searchRequest))
{
searchRequest = await requestService.GetRequestByCacheIdAsync(searchRequest.CacheId);
foreach (var resultVideo in resultVideos)
{
if (!searchRequest.Videos.Any(v => v.Id == resultVideo.Id))
{
searchRequest.Videos.Add(resultVideo);
}
}
requestService.Update(searchRequest);
}
else
{
searchRequest.Videos = resultVideos;
searchRequest = requestService.Save(searchRequest);
}
//Save user search story
storyService.Save(new SearchStory()
{
SearchDate = DateTime.Now,
//SearchRequest = searchRequest,
SearchRequest_Id = searchRequest.Id,
UserId = userId
});
return(resultVideos.AsReadOnly());
}
private void ResultVideo_Loaded(object sender, RoutedEventArgs e)
{
ResultVideo.Play();
}
/// <summary>
/// Search video in youtube
/// </summary>
/// <param name="searchRequest"></param>
/// <returns></returns>
private async Task <List <ResultVideo> > SearchInYoutubeAsync(SearchRequest searchRequest)
{
var channelService = _serviceFactory.CreateChannelService();
var videoService = _serviceFactory.CreateVideoService();
var resultVideos = new List <ResultVideo>();
// Create the service.
var youtubeService = new YouTubeService(new BaseClientService.Initializer()
{
ApiKey = "AIzaSyAZQwG0x87WljOsVjJGfL1fIC30EWf42pg",
ApplicationName = "BulbaCourses"
});
// Run the request.
var searchListRequest = youtubeService.Search.List("snippet");
searchListRequest.Type = "video";
searchListRequest.PublishedAfter = searchRequest.PublishedAfter;
searchListRequest.PublishedBefore = searchRequest.PublishedBefore;
searchListRequest.VideoDefinition = (VideoDefinitionEnum)Enum.Parse(typeof(VideoDefinitionEnum), searchRequest.Definition);
searchListRequest.VideoDimension = (VideoDimensionEnum)Enum.Parse(typeof(VideoDimensionEnum), searchRequest.Dimension);
searchListRequest.VideoDuration = (VideoDurationEnum)Enum.Parse(typeof(VideoDurationEnum), searchRequest.Duration);
searchListRequest.VideoCaption = (VideoCaptionEnum)Enum.Parse(typeof(VideoCaptionEnum), searchRequest.VideoCaption);
searchListRequest.Q = searchRequest.Title;
searchListRequest.MaxResults = 10;
// Call the search.list method to retrieve results matching the specified searchRequest
var searchListResponse = await searchListRequest.ExecuteAsync();
foreach (var searchResult in searchListResponse.Items)
{
var searchListVideo = youtubeService.Videos.List("contentDetails");
searchListVideo.Id = searchResult.Id.VideoId;
var responceVideo = await searchListVideo.ExecuteAsync();
var videoContentDetails = responceVideo.Items[0].ContentDetails;
var resultVideo = new ResultVideo();
resultVideo.Id = searchResult.Id.VideoId;
resultVideo.Title = searchResult.Snippet.Title;
resultVideo.PublishedAt = searchResult.Snippet.PublishedAt;
resultVideo.Description = searchResult.Snippet.Description;
resultVideo.Thumbnail = searchResult.Snippet.Thumbnails.High.Url;
resultVideo.Definition = videoContentDetails.Definition;
resultVideo.Dimension = videoContentDetails.Dimension;
resultVideo.Duration = videoContentDetails.Duration;
resultVideo.VideoCaption = videoContentDetails.Caption;
var channel = new Channel()
{
Id = searchResult.Snippet.ChannelId,
Name = searchResult.Snippet.ChannelTitle,
};
if (!channelService.Exists(channel))
{
channelService.Save(channel);
}
resultVideo.Channel_Id = channel.Id;
var videoFromDb = videoService.GetById(resultVideo.Id);
if (videoFromDb == null)
{
resultVideo = videoService.Save(resultVideo);
}
else
{
resultVideo = videoFromDb;
}
resultVideos.Add(resultVideo);
}
return(resultVideos);
}
private void MediaElement_SourceUpdated(object sender, DataTransferEventArgs e)
{
ResultVideo.Play();
}