/// <summary>
/// Removes all movies from the list argument that do not have all of the
/// directors that are specified in the argument.
/// </summary>
/// <param name="movies"></param>
/// <param name="directorName"></param>
private List <string> FilterMoviesByDirectors(string[] directorNames)
{
var filterResults = new List <List <string> >();
foreach (var directorName in directorNames)
{
var director = _repo.GetDirector(directorName);
if (director != null)
{
var movieDirectors = _repo.GetMovieDirectorsById(director.DirectorId);
var filterResult = new List <string>();
foreach (var movieDirector in movieDirectors)
{
filterResult.Add(movieDirector.ImdbId);
}
filterResults.Add(filterResult);
}
}
var movieIds = GetIntersection(filterResults);
return(movieIds);
}