/// <summary>
/// Removes all movies from the list argument that do not have all of the
/// languages that are specified in the argument.
/// </summary>
/// <param name="movies"></param>
/// <param name="languageName"></param>
private List <string> FilterMoviesByLanguages(string[] languageNames)
{
var filterResults = new List <List <string> >();
foreach (var languageName in languageNames)
{
var language = _repo.GetLanguage(languageName);
if (language != null)
{
var movieLanguages = _repo.GetMovieLanguagesById(language.LanguageId);
var filterResult = new List <string>();
foreach (var movieLanguage in movieLanguages)
{
filterResult.Add(movieLanguage.ImdbId);
}
filterResults.Add(filterResult);
}
}
var movieIds = GetIntersection(filterResults);
return(movieIds);
}