private void AddSearchParams(Google.Apis.YouTube.v3.SearchResource.ListRequest request, DataSearchRequest q)
{
if (!q.Year.HasValue) {
return;
}
request.PublishedAfter = new DateTime(q.Year.Value, 1, 1);
request.PublishedBefore = new DateTime(q.Year.Value + 1, 1, 1);
}
private IEnumerable<Movie> RefineSearch(IEnumerable<Movie> list, DataSearchRequest q)
{
if (!q.Year.HasValue)
{
return list;
}
return list.Where(m => m.ReleaseYear == q.Year.Value);
}
public IEnumerable<Movie> GetCachedMovies(DataSearchRequest q)
{
CacheInfo cachedResult = _appCache.Get(GetCacheKey(q)) as CacheInfo;
if (cachedResult == null)
{
return new List<Movie>();
}
return cachedResult.Movies;
}
public async Task<DataSearchResponse> Search(DataSearchRequest q, int count)
{
IEnumerable<Movie> allLoadedMovies = _cache.GetCachedMovies(q);
if (allLoadedMovies.Count() < count)
{
await RequestSearch(q, count);
allLoadedMovies = _cache.GetCachedMovies(q);
}
return new DataSearchResponse() { Movies = allLoadedMovies.Take(count), TotalResults = _cache.GetTotalResults(q) };
}
public void AddMoviesToCache(DataSearchRequest q, IEnumerable<Movie> movieList, int totalResults, string nextPageToken)
{
CacheInfo cachedResult = _appCache.Get(GetCacheKey(q)) as CacheInfo;
if (cachedResult == null)
{
cachedResult = new CacheInfo() { Movies = new List<Movie>() };
}
cachedResult.NextPageToken = nextPageToken;
cachedResult.TotalResults = totalResults;
cachedResult.Movies.AddRange(movieList);
_appCache.Put(GetCacheKey(q), cachedResult);
}
public async Task<DataSearchResponse> Search(DataSearchRequest q, int count)
{
IEnumerable<Movie> searchResult = _appCache.Get(GetCacheKey(q.Query)) as IEnumerable<Movie>;
if (searchResult == null)
{
var response = await _client.RequestSearchResult(q.Query);
searchResult = await _parser.ParseListResponse(response);
_appCache.Put(GetCacheKey(q.Query), searchResult);
}
searchResult = RefineSearch(searchResult, q);
return new DataSearchResponse() { Movies = searchResult.Take(count), TotalResults = searchResult.Count() };
}
private async Task RequestSearch(DataSearchRequest q, int count)
{
var loadedMoviesCount = _cache.GetCachedMovies(q).Count();
int needToLoadPageCount = System.Convert.ToInt32(Math.Ceiling(((double)count - loadedMoviesCount) / PAGE_SIZE));
var youtubeService = CreateService();
for (int i = 0; i < needToLoadPageCount; i++)
{
var searchListRequest = youtubeService.Search.List("snippet");
searchListRequest.Q = GetTrailersQuery(q.Query);
searchListRequest.MaxResults = PAGE_SIZE;
searchListRequest.Type = "video";
AddSearchParams(searchListRequest, q);
searchListRequest.PageToken = _cache.GetNextPageToken(q);
var searchResult = await searchListRequest.ExecuteAsync();
var movies = searchResult.Items.Select(_converter.Convert);
_cache.AddMoviesToCache(q, movies, searchResult.PageInfo.TotalResults.GetValueOrDefault(0) , searchResult.NextPageToken);
}
}
private string GetCacheKey(DataSearchRequest q)
{
return CAHCE_PREFIX + q.Query + (q.Year.HasValue ? q.Year.Value.ToString() : string.Empty);
}
public int GetTotalResults(DataSearchRequest q)
{
CacheInfo cachedResult = _appCache.Get(GetCacheKey(q)) as CacheInfo;
return cachedResult == null ? 0 : cachedResult.TotalResults;
}
public string GetNextPageToken(DataSearchRequest q)
{
CacheInfo cachedResult = _appCache.Get(GetCacheKey(q)) as CacheInfo;
return cachedResult == null ? string.Empty : cachedResult.NextPageToken;
}
