//// This code is part of Document Solutions for PDF .NET demos.// Copyright (c) MESCIUS inc. All rights reserved.//using System;using System.IO;using GrapeCity.Documents.Pdf;using GrapeCity.Documents.Pdf.AI;using DsPdfWeb.Demos.Common;
namespace DsPdfWeb.Demos{    // This sample uses the PDF AI Assistant (DsPdfAI) to analyze the document content,    // generate an abstract summarizing the PDF, and insert it as the first page.    //    // An abstract is a concise and formal description of the document's purpose and scope,    // typically used in academic or technical contexts.    // See the AiGetSummary sample for how to generate a summary of a PDF.    //    // To run this sample locally, set your OpenAI credentials    // using Util.OpenAIToken.    public class AiGetAbstract    {        public int CreatePDF(Stream stream)        {            var doc = new GcPdfDocument();            using var fs = File.OpenRead(Path.Combine("Resources", "PDFs", "Wetlands.pdf"));            doc.Load(fs);            try            {                var a = new OpenAIDocumentAssistant(Util.OpenAIToken);                var task = a.GetAbstract(doc);                task.Wait();                var page = doc.Pages.Insert(0);                Util.AddNote("Abstract generated using DsPdf AI Assistant\n\n" + task.Result, page);            }            catch (Exception ex)            {                // Make sure you have assigned your OpenAI API key to Util.OpenAIToken:                Util.CreatePdfError(doc, ex.Message);            }            doc.Save(stream);            return doc.Pages.Count;        }    }}