public async Task <List <Movie> > GetRecommendedMovies(string userID)
{
MongoDBManager mm = new MongoDBManager();
List <Movie> movies = new List <Movie>();
Dictionary <ObjectId, int> similarMovies = new Dictionary <ObjectId, int>();
UserInformation user = await mm.GetUserInformation(userID);
if (user == null)
{
return(movies);
}
foreach (var movieLike in user.MovieLikes)
{
List <UserInformation> users = mm.GetAllUsersWithExceptCurrent(userID, movieLike);
foreach (var userFromDb in users)
{
foreach (var movie in userFromDb.MovieLikes)
{
if (!similarMovies.ContainsKey(movie.Id))
{
similarMovies.Add(movie.Id, 0);
}
similarMovies[movie.Id]++;
}
}
}
var sortedSimilarMovies = from pair in similarMovies
orderby pair.Value descending
select pair;
int counter = 0;
foreach (var sortedSimilarMovie in sortedSimilarMovies)
{
if (user.MovieLikes.Exists(x => x.Id == sortedSimilarMovie.Key))
{
continue;
}
counter++;
movies.Add(await mm.GetMovie(sortedSimilarMovie.Key));
}
return(movies);
}
