private MemoryStream RenderImage()

in src/Relecloud.Web.CallCenter.Api/Services/TicketManagementService/LocalTicketRenderingService.cs [48:100]
46 lines of code
6 McCabe index (conditional complexity)

        private MemoryStream RenderImage(Ticket ticket)
        {
            var ticketImageBlob = new MemoryStream();
            if (ticket == null)
            {
                logger.LogWarning("Nothing to render for null ticket");
                return ticketImageBlob;
            }
            if (ticket.Concert == null)
            {
                logger.LogWarning("Cannot find the concert related to this ticket");
                return ticketImageBlob;
            }
            if (ticket.User == null)
            {
                logger.LogWarning("Cannot find the user related to this ticket");
                return ticketImageBlob;
            }
            if (ticket.Customer == null)
            {
                logger.LogWarning("Cannot find the customer related to this ticket");
                return ticketImageBlob;
            }

            using (var headerFont = new Font("Arial", 18, FontStyle.Bold))
            using (var textFont = new Font("Arial", 12, FontStyle.Regular))
            using (var bitmap = new Bitmap(640, 200, PixelFormat.Format24bppRgb))
            using (var graphics = Graphics.FromImage(bitmap))
            {
                graphics.SmoothingMode = SmoothingMode.AntiAlias;
                graphics.Clear(Color.White);

                // Print concert details.
                graphics.DrawString(ticket.Concert.Artist, headerFont, Brushes.DarkSlateBlue, new PointF(10, 10));
                graphics.DrawString($"{ticket.Concert.Location}   |   {ticket.Concert.StartTime.UtcDateTime}", textFont, Brushes.Gray, new PointF(10, 40));
                graphics.DrawString($"{ticket.Customer.Email}   |   {ticket.Concert.Price.ToString("c")}", textFont, Brushes.Gray, new PointF(10, 60));

                // Print a fake barcode.
                var random = new Random();
                var offset = 15;
                while (offset < 620)
                {
                    var width = 2 * random.Next(1, 3);
                    graphics.FillRectangle(Brushes.Black, offset, 90, width, 90);
                    offset += width + (2 * random.Next(1, 3));
                }

                bitmap.Save(ticketImageBlob, ImageFormat.Png);
            }

            ticketImageBlob.Position = 0;
            return ticketImageBlob;
        }