using System;
using System.IO;
using Bytescout.BarCodeReader;

namespace BarcodesFromPDF
{
    class Program
    {
        static void Main()
        {
            Reader reader = new Reader();
            reader.RegistrationName = "demo";
            reader.RegistrationKey = "demo";

            // Limit search to 1-dimensional barcodes only (exclude 2D barcodes to speed up the processing).
            // Change to barcodeReader.BarcodeTypesToFind.SetAll() to scan for all supported 1D and 2D barcode types
            // or select specific type, e.g. barcodeReader.BarcodeTypesToFind.PDF417 = True
            reader.BarcodeTypesToFind.All1D = true;

            Console.WriteLine("Reading barcodes from PDF document...");

            /* -----------------------------------------------------------------------
            NOTE: We can read barcodes from specific page to increase performance.
            For sample please refer to "Decoding barcodes from PDF by pages" program.
            ----------------------------------------------------------------------- */

            // Input url of pdf document containing barcodes
            string inputUrl = "https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/barcode-reader/sample.pdf";

            // Get memory stream from url
            var oStream = GetStreamFromUrl(inputUrl);

            // Read from input stream
            reader.ReadFromStream(oStream);

            foreach (FoundBarcode barcode in reader.FoundBarcodes)
            {
                Console.WriteLine("Found barcode with type '{0}' and value '{1}' on page {2} at {3}", 
                    barcode.Type, barcode.Value, barcode.Page, barcode.Rect);
            }

            // Cleanup
            reader.Dispose();

            Console.WriteLine();
            Console.WriteLine("Press any key to continue.");
            Console.ReadKey();
        }

        /// <summary>
        /// Get stream from Url
        /// </summary>
        private static Stream GetStreamFromUrl(string url)
        {
            byte[] oData = null;

            using (var wc = new System.Net.WebClient())
                oData = wc.DownloadData(url);

            return new MemoryStream(oData);
        }

    }
}