using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Threading;

namespace FillingColumn
{
    /// <summary>
    /// Логика взаимодействия для RefuelingPage.xaml
    /// </summary>
    public partial class RefuelingPage : Page
    {
        public RefuelingPage()
        {
            InitializeComponent();
            var timer = new DispatcherTimer();
            timer.Interval = new TimeSpan(0, 0, 5);
            timer.IsEnabled = true;
            timer.Tick += Timer_Tick;
            timer.Start();
            AddTypeOFRefueling();
            CmbTypeOfFuel.ItemsSource = Helper.CurrentGasStation.FuelInCurrentGasStation;
            Title = $"Работа с колонкой на АЗС {Helper.CurrentGasStation.GasStationID}";
        }

        //Событие таймера
        private async void Timer_Tick(object sender, EventArgs e)
        {
            try
            {
                HttpClient client = new HttpClient();
                var response = await client.GetAsync("http://127.0.0.1:7070/getDataFromCamera/");
                var Body = await response.Content.ReadAsStringAsync();
                DataOfCamera dataFromCamera = JsonConvert.DeserializeObject<DataOfCamera>(Body);
                Helper.DataFromCamera = dataFromCamera;
                TxtDataOfCamera.Text = "Гос. номер распознан: " + dataFromCamera.CarNumber;
                FindCar(Body);
            }
            catch (Exception)
            {
                TxtDataOfCamera.Text = "Нет ответа от камеры";
                Helper.FindCar = null;
            }
        }
        
        public async void FindCar(string JsonDataOfCamera)
        {
            string IDGasStation = Helper.CurrentGasStation.GasStationID.ToString();
            if (IDGasStation.Length == 1)
            {
                IDGasStation = IDGasStation.Insert(0, "0");
            }
            string port = "102" + IDGasStation;
            IPEndPoint IpPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), Convert.ToInt32(port));
            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            socket.Connect(IpPoint);
            //Отправка данных с камеры на сервер АЗС
            string request = "POST data of camera=" + JsonDataOfCamera;
            byte[] data = Encoding.UTF8.GetBytes(request);
            socket.Send(data);
            //Получение ответа от сервера АЗС
            data = new byte[256]; // буфер для ответа
            StringBuilder builder = new StringBuilder();
            int bytes = 0; // количество полученных байт
            do
            {
                bytes = socket.Receive(data, data.Length, 0);
                builder.Append(Encoding.UTF8.GetString(data, 0, bytes));
            }
            while (socket.Available > 0);

            //Десериализация данных о машине
            Helper.FindCar = JsonConvert.DeserializeObject<RootDataOfCar>(builder.ToString());
            AddTypeOFRefueling();
            // закрываем сокет
            socket.Shutdown(SocketShutdown.Both);
            socket.Close();
        }


        //Задание ограничений по типам запрвки
        public void AddTypeOFRefueling()
        {

            List<string> TypeOfRefueling = new List<string>();
            TypeOfRefueling.Add("Фиксированный объем");
            TypeOfRefueling.Add("Фиксированная цена");
            TypeOfRefueling.Add("До полного бака с ограничением по объему");
            List<string> TypeOfPayment = new List<string>();
            TypeOfPayment.Add("Банковской картой");

            if (Helper.FindCar != null)
            {
                if (Helper.FindCar.CardOfCars != null)
                {
                    if (Helper.FindCar.CardOfCars.FirstOrDefault(x => x.IDCardType == 3) != null)
                    {
                        TypeOfPayment.Add("Накопительной картой");
                    }
                    if (Helper.FindCar.CardOfCars.FirstOrDefault(x => x.IDCardType == 1) != null)
                    {
                        TypeOfPayment.Add("Кредитной картой");
                    }
                }
   
            }
            CmbTypeOfPayment.ItemsSource = TypeOfPayment;
            CmbTypeOfRefueling.ItemsSource = TypeOfRefueling;
        }


        private void BtnEnterDataOfCard_Click(object sender, RoutedEventArgs e)
        {
            AddDataOfCardWindow addDataOfCardWindow = new AddDataOfCardWindow();
            addDataOfCardWindow.ShowDialog();
        }


        private void BtnPayment_Click(object sender, RoutedEventArgs e)
        {
            if (TbAmount.Text == string.Empty && CmbTypeOfRefueling.SelectedIndex == 0)
            {
                MessageBox.Show("Не указан объём топлива", "Ошибка", MessageBoxButton.OK, MessageBoxImage.Error);
                return;
            }
            if (TbCost.Text == string.Empty && CmbTypeOfRefueling.SelectedIndex == 1)
            {
                MessageBox.Show("Не указана стоимость для заправки", "Ошибка", MessageBoxButton.OK, MessageBoxImage.Error);
                return;
            }
            if (TxtErroreMessage.Visibility == Visibility.Visible)
            {
                MessageBox.Show("Не корректные данные", "Ошибка", MessageBoxButton.OK, MessageBoxImage.Error);
                return;
            }
            decimal cost = string.IsNullOrEmpty(TbCost.Text) ? Convert.ToDecimal(TxtCost.Text.Split(' ')[0]) : Convert.ToDecimal(TbCost.Text);
            int amount = string.IsNullOrEmpty(TbAmount.Text) ? Convert.ToInt32(TxtAmount.Text.Split(' ')[0]) : Convert.ToInt32(TbAmount.Text);
            int FuelID = (CmbTypeOfFuel.SelectedItem as FuelInCurrentGasStation).IDFuelType;
            switch (CmbTypeOfPayment.SelectedValue.ToString())
            {
                case "Банковской картой":
                    PaymentBankCard(cost, amount, FuelID); break;
                case "Накопительной картой":
                    PaymentSavingCard(cost, amount, FuelID); break;
                case "Кредитной картой":
                    PaymentCreditCard(cost,amount, FuelID); break;
            }
        }
        //Оплат банковской картой
        public async void PaymentBankCard(decimal cost, int amount, int FuelID)
        {
            Helper.EnterPIN = string.Empty;
            if (Helper.EnterBankCard == null && Helper.FindCar.CardOfCars.FirstOrDefault(x => x.IDCardType == 2) == null)
            {
                MessageBox.Show("Введите информацию о карте", "Ошибка", MessageBoxButton.OK, MessageBoxImage.Error);
                return;
            }
            var CurrentFuel = Helper.CurrentGasStation.FuelInCurrentGasStation.FirstOrDefault(x => x.IDFuelType == FuelID);
            if (CurrentFuel.AmountOfFuel < amount)
            {
                MessageBox.Show($"Не достаточно топлива в хранилище! Доступно {CurrentFuel.AmountOfFuel} л.", "Ошибка", MessageBoxButton.OK, MessageBoxImage.Error);
                return;
            }
            var BankCard = Helper.EnterBankCard is null ? Helper.FindCar.CardOfCars.FirstOrDefault(x => x.IDCardType == 2) : Helper.EnterBankCard;
            EnterPINWindow enterPINWindow = new EnterPINWindow();
            enterPINWindow.ShowDialog();
            if (Helper.EnterPIN == string.Empty)
            {
                MessageBox.Show("Введите ПИН", "Ошибка", MessageBoxButton.OK, MessageBoxImage.Error);
                return;
            }
            DataOfPayment dataOfPayment = new DataOfPayment()
            {
                PriceRefueling = cost,
                NumberCard = BankCard.NumberCard,
                CardExpDate = BankCard.CardExpDate,
                Balance = BankCard.Balance,
                CardHolder = BankCard.CardHolder,
                KeySession = Helper.KeySession,
                PIN = Helper.EnterPIN
            };
            HttpClient BankClient = new HttpClient();
            string Json = JsonConvert.SerializeObject(dataOfPayment);
            StringContent content = new StringContent(Json, Encoding.UTF8);
            var response = await BankClient.PostAsync($"http://127.0.0.1:8081/pay", content);
            var ResponseMessage = await response.Content.ReadAsStringAsync();
            MessageBox.Show($"{ResponseMessage}", "Информация", MessageBoxButton.OK, MessageBoxImage.Information);
            if (ResponseMessage.Contains("Отклонено")) return;
            RootDataOfRefuling rootDataOfRefuling = new RootDataOfRefuling
            {
                Car = Helper.FindCar,
                KeySession = Helper.KeySession,
                DataOfCamera = Helper.DataFromCamera,
                VolumeFuel = amount,
                CurrentFuelID = CurrentFuel.IDFuelType,
                GasStationID = Helper.CurrentGasStation.GasStationID
            };

            RootDataOfPayment rootDataOfPayment = new RootDataOfPayment()
            {
                RootDataOfCard = BankCard,
                PriceRefueling = cost,
                Status = true,
                TransactionCode = DateTime.Now.ToString("ddMMyyyy-hhmmss"),
                RootDataOfRefuling = rootDataOfRefuling
            };
            PostDataOfPayment(JsonConvert.SerializeObject(rootDataOfPayment));
        }

        //Оплата накопительной картой
        public void PaymentSavingCard(decimal cost, int amount, int FuelID)
        {
            var CurrentFuel = Helper.CurrentGasStation.FuelInCurrentGasStation.FirstOrDefault(x => x.IDFuelType == FuelID);
            if( CurrentFuel.AmountOfFuel < amount)
            {
                MessageBox.Show($"Не достаточно топлива в хранилище! Доступно {CurrentFuel.AmountOfFuel} л.", "Ошибка", MessageBoxButton.OK, MessageBoxImage.Error);
                return;
            }
            var SavingCard = Helper.FindCar.CardOfCars.FirstOrDefault(x => x.IDCardType == 3);
            if (SavingCard.Balance < cost)
            {
                double Amount = Convert.ToDouble(SavingCard.Balance) / CurrentFuel.Price;
                double AvailableAmountFuel = Math.Truncate(Amount) * CurrentFuel.Price;
                bool CreditCardIsEnable = Helper.FindCar.CardOfCars.FirstOrDefault(x => x.IDCardType == 3) is null ? false : true;
                decimal MissingAmount = cost - SavingCard.Balance;
                if (Helper.FindCar.CardOfCars.FirstOrDefault(x => x.IDCardType == 3).Balance < MissingAmount)
                {
                    CreditCardIsEnable = false;
                }
                NoMoneyWindow noMoneyWindow = new NoMoneyWindow(MissingAmount, CreditCardIsEnable,  Convert.ToInt32(Math.Truncate(Amount)));
                noMoneyWindow.ShowDialog();
                if (Helper.TypeOfNoMoney == 0)
                {
                    return;
                }
                switch (Helper.TypeOfNoMoney)
                {
                    //Оплата кредитной картой
                    case 1:
                        PaymentBankCard(cost, amount, FuelID);
                         break;
                    //Оплата на все накопленные бонусы
                    case 2: amount = Convert.ToInt32(Math.Truncate(Amount));
                        cost = (decimal)AvailableAmountFuel;
                        break;
                    //Оплата кредитной и накопительной картой
                    case 3: PaymentCreditCard(cost - (decimal)AvailableAmountFuel, amount - Convert.ToInt32(Math.Truncate(Amount)), FuelID);
                        amount = Convert.ToInt32(Math.Truncate(Amount));
                        cost = (decimal)AvailableAmountFuel;
                        break;
                }
            }

            RootDataOfRefuling rootDataOfRefuling = new RootDataOfRefuling
            {
                Car = Helper.FindCar,
                KeySession = Helper.KeySession,
                DataOfCamera = Helper.DataFromCamera,
                VolumeFuel = amount,
                CurrentFuelID = CurrentFuel.IDFuelType,
                GasStationID = Helper.CurrentGasStation.GasStationID
            };

            RootDataOfPayment rootDataOfPayment = new RootDataOfPayment()
            {
                RootDataOfCard = SavingCard,
                PriceRefueling = cost,
                Status = true,
                TransactionCode = DateTime.Now.ToString("ddMMyyyy-hhmmss"),
                RootDataOfRefuling = rootDataOfRefuling
            };
            PostDataOfPayment(JsonConvert.SerializeObject(rootDataOfPayment));
        
        }


        //Оплата кредитной картой заправки
        public void PaymentCreditCard(decimal cost, int amount, int FuelID)
        {
            var CurrentFuel = Helper.CurrentGasStation.FuelInCurrentGasStation.FirstOrDefault(x => x.IDFuelType == FuelID);
            if (CurrentFuel.AmountOfFuel < amount)
            {
                MessageBox.Show($"Не достаточно топлива в хранилище! Доступно {CurrentFuel.AmountOfFuel} л.", "Ошибка", MessageBoxButton.OK, MessageBoxImage.Error);
                return;
            }
            var CreditCard = Helper.FindCar.CardOfCars.FirstOrDefault(x => x.IDCardType == 2);
            if (CreditCard.Balance < cost)
            {
                MessageBox.Show($"Не достаточно средств на карте", "Ошибка", MessageBoxButton.OK, MessageBoxImage.Error);
                return;
            }
            RootDataOfRefuling rootDataOfRefuling = new RootDataOfRefuling
            {
                Car = Helper.FindCar,
                KeySession = Helper.KeySession,
                DataOfCamera = Helper.DataFromCamera,
                VolumeFuel = amount,
                CurrentFuelID= CurrentFuel.IDFuelType,
                GasStationID = Helper.CurrentGasStation.GasStationID
            };

            RootDataOfPayment rootDataOfPayment = new RootDataOfPayment()
            {
                RootDataOfCard = CreditCard,
                PriceRefueling = cost,
                Status = true,
                TransactionCode = DateTime.Now.ToString("ddMMyyyy-hhmmss"),
                RootDataOfRefuling = rootDataOfRefuling
            };
            PostDataOfPayment(JsonConvert.SerializeObject(rootDataOfPayment));
        }
        
        //Отправка данных об покупке топлива
        public async void PostDataOfPayment(string JsonDataOfPayment)
        {
            string IDGasStation = Helper.CurrentGasStation.GasStationID.ToString();
            if (IDGasStation.Length == 1)
            {
                IDGasStation = IDGasStation.Insert(0, "0"); 
            }
            string port = "102" + IDGasStation;
            IPEndPoint IpPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), Convert.ToInt32(port));
            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            socket.Connect(IpPoint);
            string request = "POST data of payment=" + JsonDataOfPayment;
            byte[] data = Encoding.UTF8.GetBytes(request);
            socket.Send(data);
            data = new byte[256]; // буфер для ответа
            StringBuilder builder = new StringBuilder();
            int bytes = 0; // количество полученных байт
            do
            {
                bytes = socket.Receive(data, data.Length, 0);
                builder.Append(Encoding.UTF8.GetString(data, 0, bytes));
            }
            while (socket.Available > 0);

            MessageBox.Show(builder.ToString());
            socket.Shutdown(SocketShutdown.Both);
            socket.Close();
        }

        private void CmbTypeOfRefueling_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (CmbTypeOfRefueling.SelectedIndex == 0)
            {
                TbAmount.Visibility = Visibility.Visible;
                TxtAmount.Visibility = Visibility.Hidden;
                TbCost.Visibility = Visibility.Hidden;
                TxtCost.Visibility = Visibility.Visible;
            }
            if (CmbTypeOfRefueling.SelectedIndex == 1)
            {
                TbAmount.Visibility = Visibility.Hidden;
                TxtAmount.Visibility = Visibility.Visible;

                TbCost.Visibility = Visibility.Visible;
                TxtCost.Visibility = Visibility.Hidden;
            }
            if (CmbTypeOfRefueling.SelectedIndex == 3)
            {
                TbAmount.Visibility = Visibility.Visible;
                TxtAmount.Visibility = Visibility.Hidden;
                TbCost.Visibility = Visibility.Hidden;
                TxtCost.Visibility = Visibility.Visible;
                TbAmount.Text = Helper.FindCar.VolumeTank.ToString();
            }
        }

        private void TbAmount_TextChanged(object sender, TextChangedEventArgs e)
        {
            if (TbAmount.Text.Length == 0)
            {
                TxtErroreMessage.Visibility = Visibility.Hidden;
                TxtCost.Text = string.Empty;
                return;
            }
            if (TbAmount.Text.All(char.IsDigit) == true)
            {
                TxtErroreMessage.Visibility = Visibility.Hidden;
                var CurrentFuel = CmbTypeOfFuel.SelectedItem as FuelInCurrentGasStation;
                double cost = Convert.ToInt32(TbAmount.Text) * CurrentFuel.Price;
                TxtCost.Text = cost.ToString("F2") + " руб.";
            }
            else
            {
                TxtErroreMessage.Text = "Не корректное количество!";
                TxtErroreMessage.Visibility = Visibility.Visible;
            }

        }

        private void TbCost_TextChanged(object sender, TextChangedEventArgs e)
        {
            if (TbCost.Text.Length == 0)
            {
                TxtErroreMessage.Visibility = Visibility.Hidden;
                TxtAmount.Text = string.Empty;
                return;
            }
            if (TbCost.Text.Any(char.IsLetter) == false)
            {
                TxtErroreMessage.Visibility = Visibility.Hidden;
                var CurrentFuel = CmbTypeOfFuel.SelectedItem as FuelInCurrentGasStation;
                double Amount = Convert.ToDouble(TbCost.Text) / CurrentFuel.Price;
                double CorrectCost = Math.Truncate(Amount) * CurrentFuel.Price;
                TbCost.Text = CorrectCost.ToString("F2");
                TxtAmount.Text = Convert.ToInt32(Math.Truncate(Amount)).ToString() + " л.";
            }
            else
            {
                TxtErroreMessage.Text = "Не корректная сумма!";
                TxtErroreMessage.Visibility = Visibility.Visible;
            }
        }

        private void CmbTypeOfPayment_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (CmbTypeOfPayment.SelectedValue.ToString() == "Банковской картой")
            {
                BtnEnterDataOfCard.Visibility = Visibility.Visible;
            }
            else
            {
                BtnEnterDataOfCard.Visibility = Visibility.Hidden;
            }

        }

        private void CmbTypeOfFuel_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            TxtAmount.Text = "";
            TbAmount.Text = "";
            TxtCost.Text = "";
            TbCost.Text = "";
        }
    }
}