using EventVisitorClientApp.Models;
using EventVisitorLogic.BindingModels;
using EventVisitorLogic.Logic;
using EventVisitorLogic.ViewModels;
using Microsoft.AspNetCore.Mvc;
using System;
using System.Diagnostics;
using System.Net.NetworkInformation;
using System.Net;
using System.Numerics;
using System.Security.Cryptography.Xml;
using System.Xml.Linq;
using Microsoft.Extensions.Logging;
using static System.Runtime.InteropServices.JavaScript.JSType;
using DocumentFormat.OpenXml.Office2010.Excel;
using System.Text;
using System.Security.Cryptography;
using DocumentFormat.OpenXml.Spreadsheet;

namespace EventVisitorClientApp.Controllers
{
	public class HomeController : Controller
	{
		Random rnd = new Random();
        private static readonly Random _random = new Random();
        private void DisplayErrorMessage(string message)
        {
            ViewBag.ErrorMessage = message;
        }

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

		[HttpGet]
		public IActionResult Enter()
		{
			return View();
		}
        [HttpPost]
		public void Enter(string login, string password)
		{
			if (string.IsNullOrEmpty(login) || string.IsNullOrEmpty(password))
			{
				throw new Exception("Введите логин и пароль");
			}
			APIClient.Client = APIClient.GetRequest<OrganizerViewModel>($"api/Organizer/login?login={login}&password={password}");
			if (APIClient.Client == null)
			{
				throw new Exception("Неверный логин/пароль");
			}
			Response.Redirect("Index");
		}
		[HttpGet]
		public IActionResult Privacy()
		{
			if (APIClient.Client == null)
			{
				return Redirect("~Home/Enter");
			}
			return View(APIClient.Client);
		}
		[HttpPost]
		public void Privacy(string login, string password, string surname, string name, string lastname, string role, string organizationName, string phone)
		{
			if (APIClient.Client == null)
			{
				throw new Exception("Вы как сюда попали? Сюда вход только авторизованным");
			}
			if (string.IsNullOrEmpty(login))
			{
				throw new Exception("Введите e-mail");
			}
			if (string.IsNullOrEmpty(password))
			{
				throw new Exception("Введите пароль");
			}
			if (string.IsNullOrEmpty(name))
			{
				throw new Exception("Введите имя");
			}
			if (string.IsNullOrEmpty(surname))
			{
				throw new Exception("Введите фамилию");
			}
			if (string.IsNullOrEmpty(organizationName))
			{
				throw new Exception("Введите название организации");
			}
			if (string.IsNullOrEmpty(role))
			{
				throw new Exception("Введите роль");
			}
			APIClient.PostRequest("api/client/updatedata", new OrganizerBindingModel
			{
				Id = APIClient.Client.Id,
				Name = name,
				Surname = surname,
				LastName = lastname,
				OrganizationName = organizationName,
				Phone = phone,
				Email = login,
				Password = password
			});

			APIClient.Client.Name = name;
			APIClient.Client.Surname = surname;
			APIClient.Client.LastName = lastname;
			APIClient.Client.OrganizationName = organizationName;
			APIClient.Client.Phone = phone;
			APIClient.Client.Email = login;
			APIClient.Client.Password = password;
			Response.Redirect("Index");
		}

		[HttpGet]
		public IActionResult Register()
		{
			return View();
		}

        public static string GenerateRandomString()
        {
            const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
            return new string(Enumerable.Repeat(chars, 6)
                .Select(s => s[_random.Next(s.Length)]).ToArray());
        }

        [HttpPost]
		public void Register(string login, string password, string surname, string name, string lastname, string organizationName, string phone, string code)
		{
            //var confirmationCode = GenerateRandomString();
            //APIClient.PostRequest("api/main/SendToMail", new MailSendInfoBindingModel
            //{
            //    MailAddress = login,
            //    Subject = "Код для подтверждения регистрации",
            //    Text = $"Ваш код для подтверждения регистрации: {confirmationCode}"
            //});
            APIClient.PostRequest("api/Organizer/Register", new OrganizerBindingModel
            {
                Name = name,
                Surname = surname,
                LastName = lastname,
                OrganizationName = organizationName,
                Phone = phone,
                Email = login,
                Password = password
            });
            Response.Redirect("Enter");
            return;
        }

        [HttpPost]
        public void CheckCode(string confirmationCode, string login, string password, string surname, string name, string lastname, string organizationName, string phone)
        {
            // Получаем сохранённый код из сессии
            var storedCode = HttpContext.Session.GetString("ConfirmationCode");

            if (storedCode == confirmationCode)
            {
                
            }
            else
            {
                // Обработка неправильного кода, например, ошибка 400
                Response.StatusCode = 400;
                return;
            }
        }

        public IActionResult MyEvents()
		{
			if (APIClient.Client == null)
			{
				return Redirect("~/Home/Enter");
			}
			return View(APIClient.GetRequest<List<EventViewModel>>($"api/main/GetEventList?OrganizerId={APIClient.Client.Id}"));
		}

        public IActionResult Visitors(int id)
        {
            if (APIClient.Client == null)
            {
                return Redirect("~/Home/Enter");
            }
            var allVisitors = APIClient.GetRequest<List<VisitorViewModel>>($"api/main/GetVisitorList?EventId={id}");
            return View(allVisitors);
        }

        [HttpPost]
        public void Visitors(int id, [FromForm] List<int> presentIds)
        {
            var allVisitors = APIClient.GetRequest<List<VisitorViewModel>>($"api/main/GetVisitorList?EventId={id}");

            foreach (var visitor in allVisitors)
            {
                var status = presentIds.Contains(visitor.Id) ? "Пришел" : "Зарегистрирован";
                APIClient.PostRequest("api/main/updatevisitor", new VisitorBindingModel
                {
                    Id = visitor.Id,
                    Status = status
                });
            }
        }

        public IActionResult CreateEvent()
		{
			if (APIClient.Client == null)
			{
				return Redirect("~/Home/Enter");
			}
			return View();
		}

		public IActionResult ViewEvent(int id)
		{
			if (APIClient.Client == null)
			{
				return Redirect("~/Home/Enter");
			}

			var eventDetails = APIClient.GetRequest<EventViewModel>($"api/main/GetEvent?EventId={id}");

			return View(eventDetails);
		}
        public IActionResult ResultRegistration()
        {
            return View();
        }


        public IActionResult RegistrationOnEvent(int id)
		{
			var eventDetails = APIClient.GetRequest<EventViewModel>($"api/main/GetEvent?EventId={id}");

			return View(eventDetails);
		}
		
		[HttpPost]
        public void RegistrationOnEvent(int id, string name, string phone, string email, DateTime dayBirth)
		{ 
			var eventDetails = APIClient.GetRequest<EventViewModel>($"api/main/GetEvent?EventId={id}");

			if (eventDetails != null && eventDetails.FreePlaces > 0)
			{
				int updatedFreePlaces = eventDetails.FreePlaces - 1;

				APIClient.PostRequest("api/main/registrationonevent", new VisitorBindingModel
				{
					Name = name,
					Phone = phone,
					Email = email,
					DayBirth = dayBirth.ToUniversalTime(),
					EventId = id,
					Status = "Зарегистирован"
				});

				// 4. Обновите количество свободных мест
				APIClient.PostRequest("api/main/updateevent", new EventBindingModel
				{
					Id = id,
					Name = eventDetails.Name,
                    Description = eventDetails.Description,
                    Type = eventDetails.Type,
                    ContactPhone = eventDetails.ContactPhone,
                    Address = eventDetails.Address,
                    City = eventDetails.City,
                    Status = eventDetails.Status,
                    ContactEmail = eventDetails.ContactEmail,
                    TimeEnd = eventDetails.TimeEnd.ToUniversalTime(),
                    TimeStart = eventDetails.TimeStart.ToUniversalTime(),
                    Date = eventDetails.Date.ToUniversalTime(),
                    CountVisitors = eventDetails.CountVisitors,
                    OrganizerId = eventDetails.OrganizerId,
                    Link = eventDetails.Link,
                    FreePlaces = updatedFreePlaces
				});
                APIClient.PostRequest("api/main/SendToMail", new MailSendInfoBindingModel
                {
                    MailAddress = email,
                    Subject = "Регистрация на мероприятие",
                    Text = "Вы зарегестрированы на мероприятие " + eventDetails.Name + ", которое пройдет " + eventDetails.TimeStart + ". По адресу: " + eventDetails.Address + " г. " + eventDetails.City + ".\n" + "По всем вопросам можно обращаться по телефону: " + eventDetails.ContactPhone + " или по почте: " + eventDetails.ContactEmail + ".\n" + "Будем ждать Вас на наших мероприятиях!"
                });
                Response.Redirect("/Home/ResultRegistration");
            }
			else
			{
                Response.Redirect("MyEvents");
            }
		}

        [HttpPost]
        public void CreateEvent(string name, string description, string type, string phone, string email, string address, string city, string status, int count, DateTime timestart, DateTime timeend)
        {
            if (APIClient.Client == null)
            {
                throw new Exception("Вы как сюда попали? Сюда вход только авторизованным");
            }

            string eventId = Guid.NewGuid().ToString(); // Генерация уникального идентификатора для мероприятия
            string registrationLink = $"https://localhost:7186/registrationonevent?EventId={eventId}"; // Формирование ссылки на регистрацию

            APIClient.PostRequest("api/main/createevent", new EventBindingModel
            {
                Name = name,
                Description = description,
				Type = type,
				ContactPhone = phone,
				Address = address,
				City = city,
				Status = status,
				ContactEmail = email,
				TimeEnd = timeend.ToUniversalTime(),
				TimeStart = timestart.ToUniversalTime(),
				Date = DateTime.Now.ToUniversalTime(),
				CountVisitors = count,
				FreePlaces = count,
				OrganizerId = APIClient.Client.Id,
				Link = registrationLink
            });
            Response.Redirect("MyEvents");
        }

        public IActionResult DeleteEvent(int id)
        {
            // Проверка на авторизацию пользователя
            if (APIClient.Client == null)
            {
                return Redirect("~/Home/Enter");
            }

            // Выполнение запроса на удаление мероприятия
            APIClient.PostRequest($"api/main/DeleteEvent", new EventBindingModel { Id = id });

            // Перенаправление обратно на страницу с мероприятиями
            return RedirectToAction("MyEvents");
        }

        public IActionResult UpdateEvent(int id)
        {
            if (APIClient.Client == null)
            {
                return Redirect("~/Home/Enter");
            }
            var eventDetails = APIClient.GetRequest<EventViewModel>($"api/main/GetEvent?EventId={id}");

            return View(eventDetails);
        }

        public IActionResult SendMessage(int id)
        {
            if (APIClient.Client == null)
            {
                return Redirect("~/Home/Enter");
            }
            var eventDetails = APIClient.GetRequest<EventViewModel>($"api/main/GetEvent?EventId={id}");

            return View(eventDetails);
        }


        [HttpPost]
        public void UpdateEvent(int id, string name, string description, string type, string phone, string email, string address, string city, string status, int count, DateTime? timestart, DateTime? timeend)
        {
            if (APIClient.Client == null)
            {
                throw new Exception("Необходима авторизация");
            }
            var existingEvent = APIClient.GetRequest<EventViewModel>($"api/main/GetEvent?EventId={id}");
            DateTime start = (timestart.HasValue) ? DateTime.SpecifyKind(timestart.Value, DateTimeKind.Utc) : existingEvent.TimeStart.ToUniversalTime();
            DateTime end = (timeend.HasValue) ? DateTime.SpecifyKind(timeend.Value, DateTimeKind.Utc) : existingEvent.TimeEnd.ToUniversalTime();
            int countRegisterPlace = existingEvent.CountVisitors - existingEvent.FreePlaces;
            APIClient.PostRequest("api/main/UpdateEvent", new EventBindingModel
            {
                Id = id,
                Name = name,
                Description = description,
                Type = type,
                ContactPhone = phone,
                Address = address,
                City = city,
                Status = status,
                ContactEmail = email,
                TimeEnd = end,
                TimeStart = start,
                Date = DateTime.Now.ToUniversalTime(),
                CountVisitors = count,
                FreePlaces = count - countRegisterPlace,
                OrganizerId = APIClient.Client.Id
            });
            Response.Redirect("/Home/MyEvents");
        }

        public IActionResult GetWordFile()
        {
            return new PhysicalFileResult("F:\\EventVisitor\\wordfile.docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document");
        }

        public IActionResult Logout()
        {
            APIClient.Client = null;
            return Redirect("~/Home/Enter");
        }

        public IActionResult GetExcelFile()
        {
            return new PhysicalFileResult("F:\\EventVisitor\\excelfile.xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
        }


        //[HttpPost]
        //public void ReportWord(int[] Ids, int id)
        //{
        //    if (APIClient.Client == null)
        //    {
        //        throw new Exception("Вы как суда попали? Суда вход только авторизованным");
        //    }

        //    List<VisitorViewModel> registeredVisitorsIds = APIClient.GetRequest<List<VisitorViewModel>>($"api/main/GetVisitorList?EventId={id}");

        //    foreach (var item in Ids)
        //    {
        //        res.Add(item);
        //    }
        //    APIClient.PostRequest("api/main/createreporttowordfile", new ReportVisitorsBindingModel
        //    {
        //        Ids = res,
        //        FileName = "F:\\EventVisitor\\wordfile.docx"
        //    });
        //    Response.Redirect("GetWordFile");

        //}
    }
}