/// <summary>
/// Get the specified most recent videos IDs from a channel.
/// </summary>
/// <param name="channelID">ID of the channel to get videos IDs for.</param>
public List <string> RecentVideoIDs(string channelID)
{
try {
// https://developers.google.com/youtube/v3/docs/search/list
API.SearchResource.ListRequest channelSearch = APIService.Search.List("id");
channelSearch.ChannelId = channelID;
channelSearch.Order = API.SearchResource.ListRequest.OrderEnum.Date;
channelSearch.SafeSearch = API.SearchResource.ListRequest.SafeSearchEnum.None;
channelSearch.MaxResults = 20;
channelSearch.PrettyPrint = false;
List <string> ids = channelSearch.Execute().Items.ToList().Where(x => x.Id.Kind == "youtube#video").Select(x => x.Id.VideoId).ToList();
LoggingManager.Log.Info($"Videos retrieved for '{channelID}' with {ids.Count} results.");
return(ids);
} catch (Exception ex) {
LoggingManager.Log.Error(ex, $"Failed to get videos for '{channelID}'.");
return(new List <string>());
}
}
/// <summary>
/// Search for a channel by its name, or a multitude of other information.
/// </summary>
/// <param name="channelName">The name, or any other data about the channel to search for.</param>
public List <Database.Types.Channel> Search(string channelName)
{
try {
// https://developers.google.com/youtube/v3/docs/search/list
API.SearchResource.ListRequest channelSearch = APIService.Search.List("id,snippet");
channelSearch.Q = channelName;
channelSearch.Type = "channel";
channelSearch.Order = API.SearchResource.ListRequest.OrderEnum.Relevance;
channelSearch.MaxResults = 10;
channelSearch.PrettyPrint = false;
List <Database.Types.Channel> results = new List <Database.Types.Channel>();
foreach (API.Data.SearchResult item in channelSearch.Execute().Items)
{
if (item.Id.Kind == "youtube#channel")
{
API.Data.SearchResultSnippet channel = item.Snippet;
Database.Types.Channel channelInfo = new Database.Types.Channel {
ID = channel.ChannelId,
Title = channel.Title,
Description = channel.Description,
ThumbnailURL = GetBestThumbnail(channel.Thumbnails)
};
results.Add(channelInfo);
LoggingManager.Log.Info($"Information processed for '{channelInfo.ID}'.");
}
}
return(results);
} catch (Exception ex) {
LoggingManager.Log.Error(ex, $"Failed to search for '{channelName}'.");
return(new List <Database.Types.Channel>());
}
}
public YoutubeRequest BuildRequest(YoutubeSearchOption searchOption)
{
YouTubeService youtube = new YouTubeService(new BaseClientService.Initializer()
{
ApiKey = ApiKey
});
YoutubeRequest listRequest = youtube.Search.List("snippet");
listRequest.Q = searchOption.Query;
if (searchOption.UseDateSearch)
{
listRequest.PublishedAfter = searchOption.DateRange.Since;
listRequest.PublishedBefore = searchOption.DateRange.Until;
}
listRequest.Order = OrderEnum.Relevance;
listRequest.VideoDuration = VideoDurationEnum.Short__;
int count = searchOption.SearchCount;
listRequest.MaxResults = count <= 50 ? count : 50;
listRequest.SafeSearch = SafeSearchEnum.Strict;
listRequest.VideoDuration = (VideoDurationEnum)searchOption.YoutubeVideoDuration;
listRequest.Order = (OrderEnum)searchOption.YoutubeSortOrder;
if (searchOption.RegionCode != RegionCode.All)
{
listRequest.RegionCode = searchOption.RegionCode.ToString();
}
return(listRequest);
}
/// <summary>
/// Youtube를 이용해 검색을 실시합니다.
/// </summary>
/// <param name="searchOption">Youtube의 검색 옵션입니다.</param>
/// <returns></returns>
public override IEnumerable <YoutubeSearchResult> Search(YoutubeSearchOption searchOption)
{
try
{
YoutubeRequest listRequest = BuildRequest(searchOption);
var list = new List <YoutubeSearchResult>();
// TODO: 100개 이상일시에 count가 오류 생길 것으로 추측, 수정 필요
// TODO: NextPageToken 확인 부분이 의심스러움. 확인 필요
int remain = searchOption.SearchCount;
int count = 1;
string nextToken = string.Empty;
while (true)
{
if (!nextToken.IsNullOrEmpty())
{
listRequest.PageToken = nextToken;
}
SearchListResponse searchResponse = listRequest.Execute();
nextToken = searchResponse.NextPageToken;
var videos = new List <SearchResult>();
foreach (SearchResult searchResult in searchResponse.Items)
{
OnChangeInfoMessage(this, new MessageEventArgs("비디오 타입을 분석중입니다."));
if (searchResult.Id.Kind == "youtube#video")
{
videos.Add(searchResult);
remain--;
OnSearchProgressChanged(this, new ProgressEventArgs(searchOption.SearchCount, count++));
}
if (remain <= 0)
{
break;
}
}
count = 1;
videos.AsParallel().ForAll(s =>
{
OnChangeInfoMessage(this, new MessageEventArgs("설명을 가져오는 중입니다."));
OnSearchProgressChanged(this, new ProgressEventArgs(searchOption.SearchCount, count++));
string title = s.Snippet.Title;
string description = s.Snippet.Description;
if (description.EndsWith("..."))
{
description = GetFullDescription(s.Id.VideoId);
}
var itm = new YoutubeSearchResult()
{
Title = title,
OriginalURL = $"{"http:"}//youtube.com/watch?v={s.Id.VideoId}",
PublishedDate = s.Snippet.PublishedAt,
ChannelTitle = s.Snippet.ChannelTitle,
Description = description,
ChannelId = s.Snippet.ChannelId,
VideoId = s.Id.VideoId,
Keyword = searchOption.Query,
};
OnSearchItemFound(this, new SearchResultEventArgs(itm, ServiceKind.Youtube));
list.Add(itm);
});
if (remain <= 0)
{
break;
}
}
OnSearchFinished(this, new SearchFinishedEventArgs(ServiceKind.Youtube));
return(list);
}
catch (GoogleApiException ex)
{
if (ex.Message.ToLower().Contains("keyinvalid"))
{
throw new CredentialsTypeException("키가 올바르게 입력되지 않았습니다.");
}
else if (ex.Message.ToLower().Contains("keyexpired"))
{
throw new CredentialsTypeException("이 키는 사용이 만료되었습니다.");
}
else
{
throw ex;
}
}
catch (Exception ex)
{
throw ex;
}
}
