public static async Task ConcatAsync()

in AdlsDotNetSDK/Core.cs [587:632]
45 lines of code
8 McCabe index (conditional complexity)

        public static async Task ConcatAsync(string path, List<string> sourceFiles, bool deleteSourceDirectory, AdlsClient client,
        RequestOptions req, OperationResponse resp, CancellationToken cancelToken = default(CancellationToken))
        {
            if (sourceFiles == null || sourceFiles.Count == 0)
            {
                resp.IsSuccessful = false;
                resp.Error = "No source files to concatenate";
                return;
            }
            HashSet<string> hashSet = new HashSet<string>();//To check whether we have duplciate file names in the list
            Newtonsoft.Json.Linq.JArray jArray = new Newtonsoft.Json.Linq.JArray();
            foreach (var sourceFile in sourceFiles)
            {
                if (string.IsNullOrEmpty(sourceFile))
                {
                    resp.IsSuccessful = false;
                    resp.Error = "One of the Files to concatenate is empty";
                    return;
                }
                if (sourceFile.Equals(path))
                {
                    resp.IsSuccessful = false;
                    resp.Error = "One of the Files to concatenate has same path";
                    return;
                }
                if (hashSet.Contains(sourceFile))
                {
                    resp.IsSuccessful = false;
                    resp.Error = "One of the Files to concatenate is same as another file";
                    return;
                }

                jArray.Add(sourceFile);
            }
            Newtonsoft.Json.Linq.JObject jObject = new Newtonsoft.Json.Linq.JObject();
            jObject.Add("sources", jArray);
            byte[] body = Encoding.UTF8.GetBytes(jObject.ToString(Formatting.None));
            QueryParams qp = new QueryParams();
            if (deleteSourceDirectory)
            {
                qp.Add("deleteSourceDirectory", "true");
            }
            IDictionary<string, string> headers = new Dictionary<string, string>();
            headers.Add("Content-Type", "application/json");
            await WebTransport.MakeCallAsync("MSCONCAT", path, new ByteBuffer(body, 0, body.Length), default(ByteBuffer), qp, client, req, resp, cancelToken, headers).ConfigureAwait(false);
        }