using System.Drawing.Imaging;
using System.IO;
using System.Web;
using System.Web.Mvc;
using ZXing;
using ZXing.QrCode;
using Newtonsoft.Json;
using System.Collections.Generic;
using ZXing.Common;
using System.Reflection;
using System.Linq;

namespace QR_GEN.Controllers
{
    public class HomeController : Controller
    {
        /// <summary>
        /// Struct x richiesta serializzata/deserializzata
        /// </summary>
        public struct qrRequest
        {
            public string valore;
        }
        /// <summary>
        /// Payload da deserializzare json
        /// </summary>
        public struct qrPayload
        {
            public string baseUrl { get; set; }
            public string[] parameters { get; set; }
        }

        public ActionResult Index()
        {
            Assembly callingAssembly = Assembly.GetCallingAssembly();
            ViewBag.Version = callingAssembly.GetName().Version;
            string text = "Steamware";
            object[] customAttributes = callingAssembly.GetCustomAttributes(typeof(AssemblyCompanyAttribute), inherit: true);
            if (customAttributes.Length != 0)
            {
                text = ((AssemblyCompanyAttribute)customAttributes[0]).Company;
            }
            ViewBag.CopyRight = text;
            return View();
        }

        public RedirectResult steamware()
        {
            return Redirect("https://www.steamware.net");
        }
#if false
        /// <summary>
        /// Restituisce un QR code dato valore
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public ActionResult QR(string id)
        {
            int hSize = 600;
            int wSize = 600;
            BarcodeFormat formato = BarcodeFormat.QR_CODE;
            return getImage2D(ref id, hSize, wSize, formato);
        }
        /// <summary>
        /// Restituisce un DataMatrix code dato valore
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public ActionResult DataMatrix(string id)
        {
            int hSize = 300;
            int wSize = 600;
            BarcodeFormat formato = BarcodeFormat.DATA_MATRIX;
            return getImage2D(ref id, hSize, wSize, formato);
        }
        /// <summary>
        /// Restituisce un Aztec code dato valore
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public ActionResult Aztec(string id)
        {
            int hSize = 600;
            int wSize = 600;
            BarcodeFormat formato = BarcodeFormat.AZTEC;
            return getImage2D(ref id, hSize, wSize, formato);
        }
        /// <summary>
        /// Restituisce un Aztec code dato valore
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public ActionResult Pdf417(string id)
        {
            int hSize = 300;
            int wSize = 600;
            BarcodeFormat formato = BarcodeFormat.PDF_417;
            return getImage2D(ref id, hSize, wSize, formato);
        }
        /// <summary>
        /// Restituisce un Code39 1D dato valore
        /// </summary>
        /// <param name="id"></param>
        /// <param name="pureBarcode">mostrare valore SOLO come codice (false --> testo sotto)</param>
        /// <returns></returns>
        public ActionResult code39(string id, bool pureBarcode = false)
        {
            int hSize = 70;
            BarcodeFormat formato = BarcodeFormat.CODE_39;
            return getImage(id, hSize, formato, pureBarcode);
        }
        /// <summary>
        /// Restituisce un Code128 1D dato valore
        /// </summary>
        /// <param name="id"></param>
        /// <param name="pureBarcode">mostrare valore SOLO come codice (false --> testo sotto)</param>
        /// <returns></returns>
        public ActionResult Code128(string id, bool pureBarcode = false)
        {
            int hSize = 70;
            BarcodeFormat formato = BarcodeFormat.CODE_128;
            return getImage(id, hSize, formato, pureBarcode);
        } 
#endif

        /// <summary>
        /// Restituisce un QR code dato valore
        /// </summary>                                      
        /// <param name="id">id x impostare SITO x jumper</param>
        /// <param name="val">valore delle opzioni da embeddare</param>
        /// <returns></returns>
        public ActionResult QR_site(string id, string val)
        {
            string cmdArg = "";
            // se vuoto stea,ware...
            if (id == null || id == "")
            {
                cmdArg = "www.steamware.net";
            }
#if false
      // se arriva modo json --> deserializzo
      if (id.IndexOf("{") >= 0)
      {
        var richiesta = JsonConvert.DeserializeObject<qrRequest>(id);
        id = richiesta.valore;
      } 
#endif


#if false
      // url decode...
      id = HttpUtility.UrlDecode(id); 
#endif

            // valutare se usare file web.config, file .ini, file conf generico...

            string tgtUrl = "";
            // se l'

            // in base a richiesta compongo stringa ...
            switch (id)
            {
                case "CTRACK_ELET_SCAL":
                    tgtUrl = @"ctrack.steamware.net/elet-scal/jumper?USER_NAME=info@elettronicascalvina.it&UserAuthkey=asdfbqhewrqg7802345bhasdfg78&CodOpr=";
                    break;
                case "CTRACK_ELET_SCAL_UFF":
                    tgtUrl = @"http://192.168.1.117/CTRACK/jumper?USER_NAME=info@elettronicascalvina.it&UserAuthkey=asdfbqhewrqg7802345bhasdfg78&CodOpr=";
                    break;
                case "CTRACK_SERIATE":
                    tgtUrl = "https://iis01.egalware.com/CTRACK/jumper?USER_NAME=info@elettronicascalvina.it&UserAuthkey=asdfbqhewrqg7802345bhasdfg78&CodOpr=";
                    break;
                case "CTRACK_COLCOM":
                    tgtUrl = @"http://192.168.0.113/MP/CTRACK/jumper?USER_NAME=opr_mon&UserAuthkey=AK_sdurb4930r2d&CodOpr=";
                    break;
                case "JSON":
                    // devo DESERIALIZZARE...
                    var obj = JsonConvert.DeserializeObject<qrPayload>(val);
                    // metto tutto in tgtUrl...
                    tgtUrl = string.Format(obj.baseUrl, obj.parameters);
                    // svuoto val...
                    val = "";
                    break;
                case "JSON_ENC":
                    // devo DESERIALIZZARE...
                    var objRaw = JsonConvert.DeserializeObject<qrPayload>(val);
                    // eseguo urlencode dei parametri...
                    var objEnc = objRaw.parameters.Select(x => HttpUtility.UrlEncode(x)).ToArray();
                    // metto tutto in tgtUrl...
                    tgtUrl = string.Format(objRaw.baseUrl, objEnc);
                    // svuoto val...
                    val = "";
                    break;
                default:
                    break;
            }
            cmdArg = string.Format("{0}{1}", tgtUrl, val);
            // creo!
            QrCodeEncodingOptions options = new QrCodeEncodingOptions
            {
                DisableECI = true,
                CharacterSet = "UTF-8",
                Width = 600,
                Height = 600,
                Margin = 0
            };
            var writer = new BarcodeWriter();
            writer.Format = BarcodeFormat.QR_CODE;
            writer.Options = options;
            // scrivo bitmap
            var pixelData = writer.Write(cmdArg);

            // Return Image
            MemoryStream ms = new MemoryStream();
            pixelData.Save(ms, ImageFormat.Png);
            ms.Position = 0;
            return new FileStreamResult(ms, "image/png");
        }


#if false
        /// <summary>
        /// Genera immagina barcode richeista secondo dimensioni e formato
        /// </summary>
        /// <param name="dataStr"></param>
        /// <param name="hSize">altezza</param>
        /// <param name="formato">formati 1D di ZXing</param>
        /// <param name="pureBarcode">indica se SOLO barcode</param>
        /// <returns></returns>
        private static ActionResult getImage(string dataStr, int hSize, BarcodeFormat formato, bool pureBarcode)
        {
            // se vuoto steamware...
            if (dataStr == null || dataStr == "")
            {
                dataStr = "www.steamware.net";
            }
            dataStr = dataStr.ToUpper();
            // url decode...
            dataStr = HttpUtility.UrlDecode(dataStr);
            // creo!
            EncodingOptions options = new EncodingOptions
            {
                Height = hSize,
                Margin = 0,
                PureBarcode = pureBarcode
            };
            BarcodeWriter writer = new BarcodeWriter();
            writer.Format = formato;
            writer.Options = options;
            // scrivo bitmap
            System.Drawing.Bitmap pixelData = writer.Write(dataStr);

            // Return Image
            MemoryStream ms = new MemoryStream();
            pixelData.Save(ms, ImageFormat.Png);
            ms.Position = 0;
            return new FileStreamResult(ms, "image/png");
        }
        /// <summary>
        /// Genera immagina barcode richeista secondo dimensioni e formato
        /// </summary>
        /// <param name="id"></param>
        /// <param name="hSize"></param>
        /// <param name="wSize"></param>
        /// <param name="formato"></param>
        /// <returns></returns>
        private static ActionResult getImage2D(ref string id, int hSize, int wSize, BarcodeFormat formato)
        {
            // se vuoto steamware...
            if (id == null || id == "")
            {
                id = "www.steamware.net";
            }
            id = id.ToUpper();
            // url decode...
            id = HttpUtility.UrlDecode(id);
            // creo!
            QrCodeEncodingOptions options = new QrCodeEncodingOptions
            {
                DisableECI = true,
                CharacterSet = "UTF-8",
                Width = 600,
                Height = 600,
                Margin = 0
            };
            BarcodeWriter writer = new BarcodeWriter();
            writer.Format = formato;
            writer.Options = options;
            // scrivo bitmap
            System.Drawing.Bitmap pixelData = writer.Write(id);

            // Return Image
            MemoryStream ms = new MemoryStream();
            pixelData.Save(ms, ImageFormat.Png);
            ms.Position = 0;
            return new FileStreamResult(ms, "image/png");
        } 
#endif
    }
}