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;

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()
        {
            var assembly = Assembly.GetCallingAssembly();
            ViewBag.Version = assembly.GetName().Version;
            string company = "Steamware";
            object[] attribs = assembly.GetCustomAttributes(typeof(AssemblyCompanyAttribute), true);
            if (attribs.Length > 0)
            {
                company = ((AssemblyCompanyAttribute)attribs[0]).Company;
            }
            ViewBag.CopyRight = company;
            return View();
        }

        public RedirectResult steamware()
        {
            return Redirect("https://www.steamware.net");
        }
        /// <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 = @"http://10.74.82.219/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;
                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");
        }


    }
}