using Microsoft.AspNetCore.Mvc;
using Newtonsoft.Json;
using NuGet.Protocol.Plugins;
using System.Diagnostics;
using System.Net.Mail;
using System.Net;
using System.Reflection;
using System.Text;
using VirtualTask.Models;
using X.PagedList;
using Humanizer;
using System.Numerics;
using System.Reflection.Metadata;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Mvc.RazorPages;
using NuGet.Common;
using System.Security.Policy;

namespace VirtualTask.Controllers
{
    public class RegistrazioniController : Controller
    {
        string apiUrl = string.Empty;
        string urlBase = string.Empty;
        string token = string.Empty;
        string tenant = string.Empty;
        string errMes = string.Empty;
        string admin = string.Empty;
        string urlConfirm = string.Empty;


        HttpClient client;
        private readonly IConfiguration _configuration;
        private readonly IHttpContextAccessor _context;

        public RegistrazioniController(IConfiguration configuration, IHttpContextAccessor context)
        {
            
            client = new HttpClient();
            _configuration = configuration;
            var key = _configuration["ApplicationInsights:rootUrlApi"];
            apiUrl = key;
            _context = context;
            var request = _context.HttpContext.Request;
            urlConfirm=_configuration["ApplicationInsights:rootUrl"];
        }

        #region INDEX

        public IActionResult Index(string searchString, int? page = 1)
        {
            SessionHelper helper = new SessionHelper(this);
            urlBase = apiUrl + "RegistrazioniList";
            admin = helper.GetStringValue("admin");
            ViewBag.Admin = admin;

            Uri baseAddress = new Uri(urlBase);
            client = new HttpClient();
            client.BaseAddress = baseAddress;

            List<Registrazione> modelList = new List<Registrazione>();
            HttpResponseMessage response = client.GetAsync(baseAddress).Result;

            if (response.IsSuccessStatusCode)
            {
                string data = response.Content.ReadAsStringAsync().Result;
                modelList = JsonConvert.DeserializeObject<List<Registrazione>>(data);

                if (!string.IsNullOrEmpty(searchString))
                {
                    modelList = modelList.Where(s => s.cognome.ToUpper().Contains(searchString.ToUpper())).ToList();

                    ViewData["CurrentFilter"] = searchString;
                }
                else
                {
                    ViewData["CurrentFilter"] = null;
                }

                if (page != null && page < 1)
                {
                    page = 1;
                }

                var pageSize = 10;

                var shortLinks = modelList
                    .OrderByDescending(s => s.id)
                    .ToPagedList(page ?? 1, pageSize);

                return View(shortLinks);
            }
            else
            {
                errMes = response.Content.ReadAsStringAsync().Result;
                helper.SetStringValue("errMsg", errMes);
                return RedirectToAction("Error");
            }
        }

        #endregion INDEX

        #region CREATE

        public IActionResult Create()
        {
            return View();
        }

        [HttpPost]
        public IActionResult Create(Registrazione model)
        {
            SessionHelper helper = new SessionHelper(this);

            if (ModelState.IsValid)
            {
                string tokenMail = RandomString(10);
                model.token = tokenMail;
                bool bAziPres = false;
                bool privacy1=false;

                bAziPres = checkAziendaPresente(model.azienda);
                if (bAziPres)
                {
                    ModelState.AddModelError("azienda", "Azienda presente in archivio. Inserire un valore diverso.");
                }
                bool bEmail = model.email.Equals(model.emailConf);
                if (!bEmail)
                {
                    ModelState.AddModelError("email", "I campi Email e Conferma Email devono essere uguali");
                }
                if(model.privacy1==false)
                {
                    ModelState.AddModelError("privacy1", "E' necessario accettare la privacy");
                    privacy1 = true;
                }

                if (!bAziPres && bEmail && !privacy1)
                {
                    urlBase = apiUrl + "registrazioni/add";
                    Uri baseAddress = new Uri(urlBase);
                    client = new HttpClient();
                    client.BaseAddress = baseAddress;

                    string data = JsonConvert.SerializeObject(model);
                    StringContent content = new StringContent(data, Encoding.UTF8, "application/json");
                    HttpResponseMessage response = client.PostAsync(baseAddress, content).Result;

                    if (response.IsSuccessStatusCode)
                    {
                        //mando mail avvenuta richiesta
                        string message = getMailText(model.cognome, tokenMail, model.email);
                        string subject = _configuration["ApplicationInsights:subjectMail"];
                        bool esito = MailSent(model.email, subject, message);
                        return RedirectToAction("RegistrazioneOk");
                    }
                    else
                    {
                        errMes = response.Content.ReadAsStringAsync().Result;
                        helper.SetStringValue("errMsg", errMes);
                        return RedirectToAction("Error");
                    }
                }
                else
                {
                    return View("Create", model);
                }
            }
            else
            {
                foreach (var Elemento in ModelState.Values)
                {
                    foreach (var Errore in Elemento.Errors)
                    {
                        string ErroreRilevato = Errore.ErrorMessage;
                    }
                }
                return View("Create", model);
            }
        }

        public IActionResult RegistrazioneOk()
        {
            return View();
        }

        public async Task<ActionResult> ConfirmEmail(string Token, string Email)
        {
            SessionHelper helper = new SessionHelper(this);
            urlBase = apiUrl + "RegistrazioniList";
            admin = helper.GetStringValue("admin");
            ViewBag.Admin = admin;


            Uri baseAddress = new Uri(urlBase);
            client = new HttpClient();
            client.BaseAddress = baseAddress;

            List<Registrazione> modelList = new List<Registrazione>();
            HttpResponseMessage response = client.GetAsync(baseAddress).Result;

            if (response.IsSuccessStatusCode)
            {
                string data = response.Content.ReadAsStringAsync().Result;
                modelList = JsonConvert.DeserializeObject<List<Registrazione>>(data);

                var reg=modelList.Where(t=>t.email.Equals(Email)&& t.token.Equals(Token)).ToList();
                var trovato = reg.First();

                UpdRegistrazione(trovato);
                //mando mail riepilogo dati registrazione
                string message = getMailTextRiepilogo(trovato);
                string subject= _configuration["ApplicationInsights:subjectMailRiepilogo"];
                bool esito = MailSent(trovato.email, subject, message);
                return RedirectToAction("RegistrazioneFinished");
            }
            else
            {
                errMes = response.Content.ReadAsStringAsync().Result;
                helper.SetStringValue("errMsg", errMes);
                return RedirectToAction("Error");
            }
        }

        public IActionResult RegistrazioneFinished()
        {
            return View();
        }
        #endregion CREATE

        #region DETAILS

        public IActionResult Details(int id)
        {
            SessionHelper helper = new SessionHelper(this);

            urlBase = apiUrl + "registrazioniList";
            //urlBase = "http://10.0.0.187:8000/api/Polo/RegistrazioniList";

            Uri baseAddress = new Uri(urlBase);
            client = new HttpClient();
            client.BaseAddress = baseAddress;
            admin = helper.GetStringValue("admin");
            ViewBag.Admin = admin;
            Registrazione reg = new Registrazione();

            List<Registrazione> modelList = new List<Registrazione>();

            HttpResponseMessage response = client.GetAsync(baseAddress).Result;

            if (response.IsSuccessStatusCode)
            {
                string data = response.Content.ReadAsStringAsync().Result;
                modelList = JsonConvert.DeserializeObject<List<Registrazione>>(data);
                reg = modelList.Where(x => x.id == id).First();
            }
            else
            {
                errMes = response.Content.ReadAsStringAsync().Result;
                helper.SetStringValue("errMsg", errMes);
                return RedirectToAction("Error");
            }
            return View(reg);
        }

        #endregion DETAILS

        #region EDIT

        public IActionResult Edit(int id)
        {
            SessionHelper helper = new SessionHelper(this);

            //token = helper.GetStringValue("tok");

            //apiUrl = helper.GetStringValue("apiUrl");
            //urlBase = apiUrl + "chiusureVtList";
            //urlBase = "http://10.0.0.187:8000/api/Polo/RegistrazioniList";
            urlBase = apiUrl + "registrazioniList";

            //urlBase = urlBase + "?token=" + token;
            Uri baseAddress = new Uri(urlBase);
            client = new HttpClient();
            client.BaseAddress = baseAddress;
            admin = helper.GetStringValue("admin");
            ViewBag.Admin = admin;
            Registrazione reg = new Registrazione();

            List<Registrazione> modelList = new List<Registrazione>();

            HttpResponseMessage response = client.GetAsync(baseAddress).Result;

            if (response.IsSuccessStatusCode)
            {
                string data = response.Content.ReadAsStringAsync().Result;
                modelList = JsonConvert.DeserializeObject<List<Registrazione>>(data);
                reg = modelList.Where(x => x.id == id).First();
            }
            else
            {
                errMes = response.Content.ReadAsStringAsync().Result;
                helper.SetStringValue("errMsg", errMes);
                return RedirectToAction("Error");
            }

            return View(reg);
        }

        [HttpPost]
        public IActionResult Edit(Registrazione model)
        {
            SessionHelper helper = new SessionHelper(this);

            //token = helper.GetStringValue("tok");
            //tenant = helper.GetStringValue("tenant");
            //if (string.IsNullOrEmpty(token))
            //{
            //    return RedirectToAction("Index", "Login");
            //}
            model.azienda = tenant;
            //apiUrl = helper.GetStringValue("apiUrl");
            //urlBase = apiUrl + "registrazioni/mod";
            urlBase = apiUrl + "http://10.0.0.187:8000/api/Polo/registrazioni/mod";
            //urlBase = urlBase + "?token=" + token;
            Uri baseAddress = new Uri(urlBase);
            client = new HttpClient();
            client.BaseAddress = baseAddress;
            admin = helper.GetStringValue("admin");
            ViewBag.Admin = admin;
            string data = JsonConvert.SerializeObject(model);
            StringContent content = new StringContent(data, Encoding.UTF8, "application/json");
            HttpResponseMessage response = client.PostAsync(baseAddress, content).Result;
            if (response.IsSuccessStatusCode)
            {
                return RedirectToAction("Index");
            }
            else
            {
                errMes = response.Content.ReadAsStringAsync().Result;
                helper.SetStringValue("errMsg", errMes);
                return RedirectToAction("Error");
            }
        }

        #endregion EDIT

        #region DELETE

        [HttpGet]
        public IActionResult Delete(int id)
        {
            SessionHelper helper = new SessionHelper(this);

            //token = helper.GetStringValue("tok");

            //apiUrl = helper.GetStringValue("apiUrl");
            //urlBase = apiUrl + "chiusureVtList";
            urlBase = "http://10.0.0.187:8000/api/Polo/RegistrazioniList";
            //urlBase = urlBase + "?token=" + token;
            Uri baseAddress = new Uri(urlBase);
            client = new HttpClient();
            client.BaseAddress = baseAddress;

            admin = helper.GetStringValue("admin");
            ViewBag.Admin = admin;

            Registrazione reg = new Registrazione();
            List<Registrazione> modelList = new List<Registrazione>();
            HttpResponseMessage response = client.GetAsync(baseAddress).Result;

            if (response.IsSuccessStatusCode)
            {
                string data = response.Content.ReadAsStringAsync().Result;
                modelList = JsonConvert.DeserializeObject<List<Registrazione>>(data);
                reg = modelList.Where(x => x.id.Equals(id)).First();
                return View(reg);
            }
            else
            {
                errMes = response.Content.ReadAsStringAsync().Result;
                helper.SetStringValue("errMsg", errMes);
                return RedirectToAction("Error");
            }
        }

        [HttpPost, ActionName("DeleteConfirmed")]
        public IActionResult DeleteConfirmed(int id)
        {
            SessionHelper helper = new SessionHelper(this);

            //token = helper.GetStringValue("tok");

            //apiUrl = helper.GetStringValue("apiUrl");
            urlBase = /*apiUrl + */"http://10.0.0.187:8000/api/Polo/Registrazioni/del?" + "id=" + id /*+ "&"*/;
            //urlBase = urlBase + "token=" + token;
            Uri baseAddress = new Uri(urlBase);
            client = new HttpClient();
            client.BaseAddress = baseAddress;

            admin = helper.GetStringValue("admin");
            ViewBag.Admin = admin;

            string data = JsonConvert.SerializeObject(id);
            StringContent content = new StringContent(data, Encoding.UTF8, "application/json");

            HttpResponseMessage response = client.PostAsync(baseAddress, content).Result;

            if (response.IsSuccessStatusCode)
            {
                return RedirectToAction("Index");
            }
            else
            {
                errMes = response.Content.ReadAsStringAsync().Result;
                helper.SetStringValue("errMsg", errMes);
                return RedirectToAction("Error");
            }
        }

        #endregion DELETE

        [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
        public IActionResult Error()
        {
            SessionHelper helper = new SessionHelper(this);
            string e = helper.GetStringValue("errMsg");
            return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier, ErrMsg = e });
        }
        private bool checkAziendaPresente(string azienda)
        {
            bool trovato = false;
            bool bAziPres = false;

            //urlBase = "http://10.0.0.187:8000/api/Polo/AziendePresentiList";
            urlBase = apiUrl + "AziendePresentiList";
            Uri baseAddress = new Uri(urlBase);
            client = new HttpClient();
            client.BaseAddress = baseAddress;

            List<AziendaPres> modelList = new List<AziendaPres>();
            HttpResponseMessage response = client.GetAsync(baseAddress).Result;
            if (response.IsSuccessStatusCode)
            {
                string data = response.Content.ReadAsStringAsync().Result;
                modelList = JsonConvert.DeserializeObject<List<AziendaPres>>(data);
                foreach(AziendaPres a in modelList) 
                {
                    if(!string.IsNullOrEmpty(a.tccodazi) && a.tccodazi.Trim().Equals(azienda))
                        trovato = true;
                }
                bAziPres = trovato;
            }
            return bAziPres;
        }
        private bool MailSent(string receiver, string subject,  string message)
        {
            //REMEMBER per una mail gmail bisogna andare nelle impostazioni
            //e impostare "Accesso app meno sicure" a ON
            bool sent = false;


            string senderMail = _configuration["ApplicationInsights:mittenteMail"];
            string senderName = _configuration["ApplicationInsights:nomeMail"];
            string pwdMail = _configuration["ApplicationInsights:pwdMail"];
            

            
            //string message = getMailText(nome, tokenMail, receiver);
            
            var senderEmail = new MailAddress(senderMail, senderName);
            var receiverEmail = new MailAddress(receiver, "Receiver");
            var password = pwdMail;
            var sub = subject;
            var body = message;
            var smtp = new SmtpClient
            {
                Host = "smtp.gmail.com",
                Port = 587,
                EnableSsl = true,

                DeliveryMethod = SmtpDeliveryMethod.Network,
                UseDefaultCredentials = false,
                Credentials = new NetworkCredential(senderEmail.Address, password)
            };
            using (var mess = new MailMessage(senderEmail, receiverEmail)
            {
                Subject = subject,
                Body = body,
                IsBodyHtml = true
            })
            {
                smtp.Send(mess);
            }
            return sent;
        }

        private string getMailText(string nome,string tokenEmail, string emailReg)
        {
            string txt = string.Empty;
            StringBuilder sb=new StringBuilder();
            sb.Append(urlConfirm);
            sb.Append("/Registrazioni/ConfirmEmail");            
            sb.Append("?Token=");
            sb.Append(tokenEmail);
            sb.Append("&Email=");
            sb.Append(emailReg);

            string url = sb.ToString();

            txt = string.Format("Gentile sig. <b>{0}</b><br> Grazie per essersi registrato. Per completare la registrazione fare click al link: <a href =\"{1}\" title =\"Conferma registrazione\">Conferma</a>", nome, url) ;
            //txt = "<b>titolo contenuto</b><br>contenuto mail di registrazione";
            return txt;
        }

        private string getMailTextRiepilogo(Registrazione r)
        {
            string txt = string.Empty;
            StringBuilder sb = new StringBuilder();
            sb.Append(string.Format("Gentile sig. <b>{0}</b><br>", r.cognome));
            sb.Append("Le confermiamo il completamento della procedura di registrazione<br>");
            sb.Append("Di seguito il riepilogo della sua registrazione:<br>");
            sb.Append(string.Format("Nome: <b>{0}</b><br>", !string.IsNullOrEmpty(r.nome)?r.nome:string.Empty));
            sb.Append(string.Format("Cognome: <b>{0}</b><br>", !string.IsNullOrEmpty(r.cognome) ? r.cognome : string.Empty));
            sb.Append(string.Format("Telefono: <b>{0}</b><br>", !string.IsNullOrEmpty(r.telefono) ? r.telefono : string.Empty));
            sb.Append(string.Format("Cellulare: <b>{0}</b><br>", !string.IsNullOrEmpty(r.cellulare) ? r.cellulare : string.Empty));
            sb.Append(string.Format("Email: <b>{0}</b><br>", !string.IsNullOrEmpty(r.email) ? r.email : string.Empty));
            sb.Append(string.Format("Azienda: <b>{0}</b><br>", !string.IsNullOrEmpty(r.azienda) ? r.azienda : string.Empty));
            sb.Append(string.Format("Città: <b>{0}</b><br>", !string.IsNullOrEmpty(r.citta) ? r.citta : string.Empty));
            sb.Append(string.Format("Provincia: <b>{0}</b><br>", !string.IsNullOrEmpty(r.provincia) ? r.provincia : string.Empty));
            sb.Append(string.Format("Nazione: <b>{0}</b><br>", !string.IsNullOrEmpty(r.nazione) ? r.nazione : string.Empty));
            sb.Append(string.Format("Username: <b>{0}</b><br>", !string.IsNullOrEmpty(r.username) ? r.username : string.Empty));
            sb.Append(string.Format("Password: <b>{0}</b><br>", !string.IsNullOrEmpty(r.passwd) ? r.passwd : string.Empty));

            txt = sb.ToString();
            return txt;
        }

        private static Random random = new Random();

        public static string RandomString(int length)
        {
            const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
            return new string(Enumerable.Repeat(chars, length)
                .Select(s => s[random.Next(s.Length)]).ToArray());
        }

        public bool UpdRegistrazione(Registrazione  model)
        { 
            bool upd=false;
            model.attivato = "S";
            urlBase = apiUrl + "registrazioni/mod";
            Uri baseAddress = new Uri(urlBase);
            client = new HttpClient();
            client.BaseAddress = baseAddress;

            string data = JsonConvert.SerializeObject(model);
            StringContent content = new StringContent(data, Encoding.UTF8, "application/json");
            HttpResponseMessage response = client.PostAsync(baseAddress, content).Result;

            if (response.IsSuccessStatusCode)
            {
                 upd = true;
            }
            return upd;
        }

    }
}