private async Task SearchForHistoricalDocumentsAsync()

in Tools/MultiplayerSessionHistoryViewer/Form1.cs [561:630]
63 lines of code
8 McCabe index (conditional complexity)

        private async Task SearchForHistoricalDocumentsAsync(QueryBundle queryBundle, bool addToStack)
        {
            this.tbSandbox.Text = queryBundle.Sandbox;
            this.tbScid.Text = queryBundle.Scid;
            this.tbTemplateName.Text = queryBundle.TemplateName;
            this.tbQueryKey.Text = queryBundle.QueryKey;
            this.cmbQueryType.SelectedIndex = queryBundle.QueryKeyIndex;
            this.dateTimePicker1.Value = queryBundle.QueryFrom;
            this.dateTimePicker2.Value = queryBundle.QueryTo;

            string eToken = await ToolAuthentication.GetDevTokenSilentlyAsync(this.tbScid.Text, this.tbSandbox.Text);

            this.lblExplanation.Text = "Searching for MPSD historical documents...";

            Tuple<HttpStatusCode, string> response = null;
            string continuationToken = null;

            do
            {
                response = await this.QueryForHistoricalSessionDocuments(eToken, queryBundle, continuationToken);

                if (response.Item1 == HttpStatusCode.OK)
                {
                    continuationToken = response.Item2;
                }
                else
                {
                    continuationToken = null;
                }
            }
            while (continuationToken != null);

            this.downloadPanel.Hide();

            if (response.Item1 != HttpStatusCode.OK)
            {
                if (response.Item1 == HttpStatusCode.Unauthorized)
                {
                    MessageBox.Show("Your auth token has expired. Re-try the query to get a new token", "Expired Token");
                }
                else if (response.Item1 == HttpStatusCode.InternalServerError)
                {
                    MessageBox.Show("The server is busy.  Please try again", QueryFailure);
                }
                else
                {
                    MessageBox.Show(response.Item2, QueryFailure);
                }
            }
            else
            {
                if (this.listView1.Items.Count == 0)
                {
                    this.btnPriorQuery.Visible = this.queryStack.Count > 0; // show the back button following un unsuccesful query (if there was a prior successul one)
                    MessageBox.Show("No results found.  Try expanding the query time window (if possible)\nor use different search criteria.", "Query Results");
                }
                else
                {
                    if (addToStack)
                    {
                        this.queryStack.Push(queryBundle); // succesful query, so remember it
                        this.btnPriorQuery.Visible = this.queryStack.Count > 1;
                    }
                    else
                    {
                        this.btnPriorQuery.Visible = this.queryStack.Count > 0;
                    }
                }
            }
        }