using iTextSharp.text.pdf;
using iTextSharp.text;
using Sessioa.BaseModel;
using Sessioa.Classes;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using Microsoft.Win32;
using System.Drawing;
using System.Windows.Documents;
using System.Data.Entity;

namespace Sessioa.Pages
{
    /// <summary>
    /// Логика взаимодействия для OrderCard.xaml
    /// </summary>
    public partial class OrderCard : Page
    {
        List<Product> products = (List<Product>)Application.Current.Properties["ListOrderUser"];
        List<PointsOfIssue> points = BaseClass.C_Base.PointsOfIssue.ToList();
        List<StatusOrder> statesOrder = BaseClass.C_Base.StatusOrder.ToList();
        Dictionary<string, int> keyValuePairs = (Dictionary<string, int>)(Application.Current.Properties["ListOrderCountUser"]);
        User user = null;
        Order orderEdit = null;
        bool state = false;
        public OrderCard(User userSign)
        {
            InitializeComponent();
            user = userSign;
            LB_ProductsOrder.ItemsSource = products;
            OrderTitle.Text = $"Заказ #{BaseClass.C_Base.Order.OrderByDescending(x => x.OrderID).First().OrderID + 1}";
            if (keyValuePairs != null)
            {
                if (keyValuePairs.Count == 0)
                {
                    foreach (Product product in products)
                    {
                        keyValuePairs.Add($"{product.ProductArticleNumber}", 1);
                    }
                }
            }
            else
            {
                foreach (Product product in products)
                {
                    try
                    {
                        keyValuePairs.Add($"{product.ProductArticleNumber}", 1);
                    }
                    catch { }
                }
            }
            CB_Punkt.ItemsSource = points;
            CB_Punkt.DisplayMemberPath = "PointName";
            CB_Punkt.SelectedValuePath = "PointID";
            ItogoSkidka();
        }
        public OrderCard(User userSign, int order_ID)
        {
            InitializeComponent();
            state = true;
            user = userSign;
            if (user.UserRole < 2)
            {
                B_Save.Visibility = Visibility.Collapsed;
            }
            orderEdit = BaseClass.C_Base.Order.FirstOrDefault(x => x.OrderID == order_ID);
            OrderTitle.Text = $"Заказ #{orderEdit.OrderID}";
            if (orderEdit != null)
            {
                foreach (OrderProduct op in BaseClass.C_Base.OrderProduct.Where(x => x.OrderID == orderEdit.OrderID).ToList())
                {
                    products.Add(op.Product);
                    try
                    {
                        keyValuePairs.Add($"{op.Product.ProductArticleNumber}", op.ProductCount);
                    }
                    catch { }
                }
            }
            LB_ProductsOrder.ItemsSource = products;
            B_Save.Content = "Сохранить";
            CB_Punkt.Visibility = Visibility.Collapsed;
            TB_Punkt.Visibility = Visibility.Visible;
            TB_Punkt.Text = $"{points[orderEdit.OrderPickupPoint - 1].PointName}";

            StateOrder.ItemsSource = statesOrder;
            StateOrder.DisplayMemberPath = "StatusTitle";
            StateOrder.SelectedValuePath = "StatusId";
            StateOrder.SelectedItem = statesOrder[BaseClass.C_Base.Order.FirstOrDefault(x => x.OrderID == order_ID).OrderStatus - 1];

            if (orderEdit.OrderDeliveryDate != null)
                DP_Order.SelectedDate = orderEdit.OrderDeliveryDate;
            OrderCode.Text = $"Код выдачи: {orderEdit.IssueCode}";
            ItogoSkidka();
        }
        private void countPr_Loaded(object sender, RoutedEventArgs e)
        {
            TextBlock textBlock = (TextBlock)sender;
            Product product = BaseClass.C_Base.Product.FirstOrDefault(x => x.ProductArticleNumber == textBlock.Uid);
            if (product.ProductDiscountAmount != null)
                textBlock.TextDecorations = TextDecorations.Strikethrough;
        }

        private void countDPr_Loaded(object sender, RoutedEventArgs e)
        {
            TextBlock textBlock = (TextBlock)sender;
            Product product = BaseClass.C_Base.Product.FirstOrDefault(x => x.ProductArticleNumber == textBlock.Uid);
            if (product.ProductDiscountAmount != null)
            {
                textBlock.Visibility = Visibility.Visible;
                textBlock.Text = $" {(double)(product.ProductCost - product.ProductCost * product.ProductDiscountAmount / 100)} ₽";
            }
        }

        private void Discount_Loaded(object sender, RoutedEventArgs e)
        {
            TextBlock textBlock = (TextBlock)sender;
            Product product = BaseClass.C_Base.Product.FirstOrDefault(x => x.ProductArticleNumber == textBlock.Uid);
            if (product.ProductDiscountAmount != null)
            {
                textBlock.Visibility = Visibility.Visible;
                textBlock.Text = $"Скидка {product.ProductDiscountAmount}%";
            }
        }

        private void B_Back_Click(object sender, RoutedEventArgs e)
        {
            if (state == false)
            {
                Application.Current.Properties["ListOrderCountUser"] = keyValuePairs;
                FrameClass.C_Frame.Navigate(new ProductsPage(user));
            }
            else
            {
                Application.Current.Properties["ListOrderCountUser"] = new Dictionary<string, int>();
                Application.Current.Properties["ListOrderUser"] = new List<Product>();
                FrameClass.C_Frame.Navigate(new OrderNew(user));
            }
        }
        public static string filePath = "";

        private void B_Save_Click(object sender, RoutedEventArgs e)
        {
            if (state == false)
            {
                Application.Current.Properties["ListOrderUser"] = new List<Product>();
                Application.Current.Properties["ListOrderCountUser"] = new Dictionary<string, int>();
                if (CB_Punkt.SelectedIndex == -1)
                    MessageBox.Show("Выберите пункт выдачи.", "Предупреждение", MessageBoxButton.OK, MessageBoxImage.Warning);
                else
                {
                    try
                    {
                        Random rnd = new Random();
                        int code = rnd.Next(100, 999);
                        Order newOrder = new Order()
                        {
                            //OrderID = BaseClass.C_Base.Order.OrderByDescending(x => x.OrderID).FirstOrDefault().OrderID + 1,
                            OrderStatus = 2,
                            OrderDate = DateTime.Now,
                            OrderPickupPoint = ((PointsOfIssue)CB_Punkt.SelectedItem).PointID,
                            UserID = user.UserID,
                            IssueCode = code
                        };
                        BaseClass.C_Base.Order.Add(newOrder);
                        BaseClass.C_Base.SaveChanges();
                        foreach (KeyValuePair<string, int> pair in keyValuePairs)
                        {
                            OrderProduct op = new OrderProduct()
                            {
                                OrderID = newOrder.OrderID,
                                ProductArticleNumber = pair.Key,
                                ProductCount = pair.Value
                            };
                            BaseClass.C_Base.OrderProduct.Add(op);
                        }
                        BaseClass.C_Base.SaveChanges();
                        MessageBoxResult res = MessageBox.Show($"Заказ оформлен. Код для выдачи: {code}. Отследить заказ можно в разделе \"Заказы\" на странице товаров.\nСохранить чек в pdf?", "Уведомление", MessageBoxButton.YesNo, MessageBoxImage.Information);
                        if (res == MessageBoxResult.Yes)
                        {
                            SaveFileDialog dlg = new SaveFileDialog();
                            dlg.FileName = $"Талон #{newOrder.OrderID}.pdf";
                            dlg.DefaultExt = ".pdf";
                            dlg.Filter = "PDF documents (.pdf)|*.pdf";

                            if (dlg.ShowDialog() == true)
                            {
                                try
                                {
                                    decimal itogoBezSkidki = 0;
                                    decimal itogoSoSkidkoy = 0;
                                    List<OrderProduct> tmpOP = BaseClass.C_Base.OrderProduct.Where(x => x.OrderID == newOrder.OrderID).ToList();
                                    foreach (OrderProduct opItem in tmpOP)
                                    {
                                        Product prAdd = BaseClass.C_Base.Product.FirstOrDefault(x => x.ProductArticleNumber == opItem.ProductArticleNumber);
                                        itogoBezSkidki += prAdd.ProductCost * opItem.ProductCount;
                                        if (prAdd.ProductDiscountAmount != null && prAdd.ProductDiscountAmount != 0)
                                        {
                                            itogoSoSkidkoy += (prAdd.ProductCost - (prAdd.ProductCost * ((decimal)prAdd.ProductDiscountAmount / 100))) * opItem.ProductCount;
                                        }
                                        else
                                            itogoSoSkidkoy += prAdd.ProductCost * opItem.ProductCount;
                                    }
                                    newOrder.Cost = itogoSoSkidkoy;
                                    newOrder.Discount = Math.Round((1 - (itogoSoSkidkoy / itogoBezSkidki)) * 100, 2);

                                    filePath = dlg.FileName;
                                    Document document = new Document();
                                    document.AddLanguage("ru-RU");
                                    PdfWriter.GetInstance(document, new FileStream(filePath, FileMode.Create));
                                    document.Open();

                                    BaseFont baseFont = BaseFont.CreateFont("C:\\Windows\\Fonts\\Arial.ttf", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
                                    iTextSharp.text.Font font = new iTextSharp.text.Font(baseFont, iTextSharp.text.Font.DEFAULTSIZE, iTextSharp.text.Font.NORMAL); //чтобы не было проблем с русскими символами
                                    
                                    document.Add(new iTextSharp.text.Paragraph($"Заказ #{newOrder.OrderID}", font));
                                    document.Add(new iTextSharp.text.Paragraph($"Дата заказа: {newOrder.OrderDate}", font));
                                    document.Add(new iTextSharp.text.Paragraph($"\nСостав заказа:", font));
                                    List<OrderProduct> op = BaseClass.C_Base.OrderProduct.Include(x => x.Product).Where(x => x.OrderID == newOrder.OrderID).ToList();
                                    int i = 1;
                                    foreach (OrderProduct opItem in op)
                                    {
                                        document.Add(new iTextSharp.text.Paragraph($"{i}. " + opItem.ToString(), font));
                                        i++;
                                    }
                                    document.Add(new iTextSharp.text.Paragraph($"Общая скидка: {newOrder.Discount}%", font));
                                    document.Add(new iTextSharp.text.Paragraph($"Стоимость заказа: {Math.Round(newOrder.Cost, 2)} руб.", font));
                                    document.Add(new iTextSharp.text.Paragraph($"Пункт выдачи: {BaseClass.C_Base.PointsOfIssue.FirstOrDefault(x=>x.PointID == newOrder.OrderPickupPoint).PointName}", font));
                                    document.Add(new iTextSharp.text.Paragraph($"Код выдачи: {newOrder.IssueCode}", font));
                                    document.Close();
                                    MessageBox.Show("Документ сохранен", "Уведомление", MessageBoxButton.OK, MessageBoxImage.Information);
                                }
                                catch
                                {
                                    MessageBox.Show("Не удалось сохранить документ", "Ошибка", MessageBoxButton.OK, MessageBoxImage.Error);
                                }
                            }
                        }
                        FrameClass.C_Frame.Navigate(new ProductsPage(user));
                    }
                    catch
                    {
                        MessageBoxResult res = MessageBox.Show("что-то сломалось.", "Ошибка", MessageBoxButton.OK, MessageBoxImage.Error);
                    }
                }
            }
            else
            {
                orderEdit.OrderStatus = ((StatusOrder)StateOrder.SelectedItem).StatusId;
                if (DP_Order.SelectedDate != null)
                    orderEdit.OrderDeliveryDate = DP_Order.SelectedDate;
                BaseClass.C_Base.SaveChanges();
                MessageBoxResult res = MessageBox.Show("Изменения внесены.", "Уведомление", MessageBoxButton.OK, MessageBoxImage.Information);
                FrameClass.C_Frame.Navigate(new OrderNew(user));
            }
        }

        private void Back_B_Click(object sender, RoutedEventArgs e)
        {
            Button bBack = (Button)sender;
            Grid grid = (Grid)bBack.Parent;
            TextBlock textBlock = (TextBlock)grid.FindName("CountProduct");
            Product pr = BaseClass.C_Base.Product.FirstOrDefault(x => x.ProductArticleNumber == bBack.Uid);
            if (pr != null)
            {
                foreach (KeyValuePair<string, int> pair in keyValuePairs)
                {
                    if (pair.Key == bBack.Uid)
                    {
                        if (pair.Value > 1)
                        {
                            keyValuePairs[pair.Key]--;
                            textBlock.Text = keyValuePairs[pair.Key].ToString();
                            break;
                        }
                    }
                }
            }
            ItogoSkidka();
        }

        private void Next_B_Click(object sender, RoutedEventArgs e)
        {
            Button bNext = (Button)sender;
            Grid grid = (Grid)bNext.Parent;
            TextBlock textBlock = (TextBlock)grid.FindName("CountProduct");
            Product pr = BaseClass.C_Base.Product.FirstOrDefault(x => x.ProductArticleNumber == bNext.Uid);
            if (pr != null)
            {
                foreach (KeyValuePair<string, int> pair in keyValuePairs)
                {
                    if (pair.Key == bNext.Uid)
                    {
                        keyValuePairs[pair.Key]++;
                        textBlock.Text = keyValuePairs[pair.Key].ToString();
                        break;
                    }
                }
            }
            ItogoSkidka();
        }

        private void CountProduct_Loaded(object sender, RoutedEventArgs e)
        {
            TextBlock tb = (TextBlock)sender;
            if (keyValuePairs.Count > 0)
            {
                foreach (KeyValuePair<string, int> pair in keyValuePairs)
                {
                    if (pair.Key == tb.Uid)
                    {
                        tb.Text = keyValuePairs[pair.Key].ToString();
                        break;
                    }
                }
            }
        }
        public void ItogoSkidka()
        {
            decimal itogoBezSkidki = 0;
            foreach (Product item in products)
            {
                foreach (KeyValuePair<string, int> pair in keyValuePairs)
                {
                    if (pair.Key == item.ProductArticleNumber)
                    {
                        itogoBezSkidki += item.ProductCost * pair.Value;
                    }
                }
            }
            decimal itogoSoSkidkoy = 0;
            foreach (Product item in products)
            {
                foreach (KeyValuePair<string, int> pair in keyValuePairs)
                {
                    if (pair.Key == item.ProductArticleNumber)
                    {
                        if (item.ProductDiscountAmount != null)
                        {
                            itogoSoSkidkoy += (item.ProductCost - (item.ProductCost * ((decimal)item.ProductDiscountAmount / 100))) * pair.Value;
                        }
                        else
                            itogoSoSkidkoy += item.ProductCost * pair.Value;
                    }
                }
            }
            decimal ITOGO = Math.Round((1 - (itogoSoSkidkoy / itogoBezSkidki)) * 100, 2);
            TB_ItogoSkidka.Text = $"Скидка {ITOGO}%";
            TB_Itogo.Text = $"{(double)itogoSoSkidkoy} ₽";
        }

        private void SP_EditOrder_Loaded(object sender, RoutedEventArgs e)
        {
            StackPanel sp = (StackPanel)sender;
            if (state == false || user.UserRole < 2)
                sp.Visibility = Visibility.Collapsed;
        }

        private void Back_B_Loaded(object sender, RoutedEventArgs e)
        {
            Button btn = (Button)sender;
            if (state == true)
                btn.Visibility = Visibility.Collapsed;
        }

        private void Next_B_Loaded(object sender, RoutedEventArgs e)
        {
            Button btn = (Button)sender;
            if (state == true)
                btn.Visibility = Visibility.Collapsed;
        }

        private void OrderCode_Loaded(object sender, RoutedEventArgs e)
        {
            TextBlock tb = (TextBlock)sender;
            if (state == false)
                tb.Visibility = Visibility.Collapsed;
        }

        private void DelProduct_Click(object sender, RoutedEventArgs e)
        {
            foreach (KeyValuePair<string, int> item in keyValuePairs)
            {
                Product tmp = BaseClass.C_Base.Product.FirstOrDefault(x => x.ProductArticleNumber == ((Product)LB_ProductsOrder.SelectedItem).ProductArticleNumber);
                if (item.Key == tmp.ProductArticleNumber)
                {
                    keyValuePairs.Remove(item.Key);
                    products.Remove(tmp);
                    break;
                }
            }
            LB_ProductsOrder.ItemsSource = null;
            LB_ProductsOrder.ItemsSource = products;
        }
    }
}