GetArtistMovies() public method

public GetArtistMovies ( ) : MovieEntity>.IDictionary
return MovieEntity>.IDictionary
        // get : api/ArtistMovies?q=artist-name&page={default 30}
        protected override string ProcessRequest()
        {
            const int defaultMoviesCount = 30;
            int resultLimit = defaultMoviesCount;
            string artistName = string.Empty;
            string dataType = string.Empty;

            // get query string parameters
            string queryParameters = this.Request.RequestUri.Query;
            if (queryParameters != null)
            {
                var qpParams = HttpUtility.ParseQueryString(queryParameters);

                if (!string.IsNullOrEmpty(qpParams["page"]))
                {
                    int.TryParse(qpParams["page"].ToString(), out resultLimit);
                }

                if (!string.IsNullOrEmpty(qpParams["name"]))
                {
                    artistName = qpParams["name"].ToLower().Trim();
                }

                if (!string.IsNullOrEmpty(qpParams["type"]))
                {
                    dataType = qpParams["type"].ToLower();
                }
            }

            try
            {
                var tableMgr = new TableManager();

                if (dataType == "movie")
                {
                    if (resultLimit == defaultMoviesCount)
                    {
                        string json;
                        string uArtistName = artistName.Replace(" ", "-").Replace(".", "-");
                        if (!CacheManager.TryGet<string>(CacheConstants.ArtistMoviesJson + uArtistName, out json))
                        {
                            var moviesByName = tableMgr.GetArtistMovies(artistName);
                            var movies = moviesByName.Take(resultLimit);
                            json = jsonSerializer.Value.Serialize(movies);
                            CacheManager.Add<string>(CacheConstants.ArtistMoviesJson + uArtistName, json);
                        }
                        return json;
                    }
                    else
                    {
                        var moviesByName = tableMgr.GetArtistMovies(artistName);
                        var movies = moviesByName.Take(resultLimit);
                        return jsonSerializer.Value.Serialize(movies);
                    }
                }
                else // Bio
                {
                    string json;
                    string uArtistName = artistName.Replace(" ", "-").Replace(".", "-");
                    if (!CacheManager.TryGet<string>(CacheConstants.ArtistBioJson + uArtistName, out json))
                    {
                        json = UpdateArtistHit(uArtistName);
                        CacheManager.Add<string>(CacheConstants.ArtistBioJson + uArtistName, json);
                    }
                    else
                    {
                        Task.Run(() => UpdateArtistHit(uArtistName));
                    }
                    return json;
                }
            }
            catch (Exception e)
            {
                // TODO: Log the error message
                // if any error occured then return User friendly message with system error message
                if (dataType == "movie")
                {
                    return movieError.Value;
                }
                else
                {
                    return bioError.Value;
                }
            }
        }