using System;
using System.Collections.Generic;
using System.Linq;
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;

namespace SchoolProject
{
    /// <summary>
    /// Логика взаимодействия для ShowEmployeePage.xaml
    /// </summary>
    public partial class ShowEmployeePage : Page
    {
        public ShowEmployeePage()
        {
            InitializeComponent();
            Load();
        }

        public void Load()
        {
            EmployeeList.ItemsSource = DB.db.Employee.ToList();
        }

        private void BtnAddEmployee_Click(object sender, RoutedEventArgs e)
        {
            ManagerFrame.MainFrame.Navigate(new WorkOfEmployeePage());
        }

        private void BtnEditEmployee_Click(object sender, RoutedEventArgs e)
        {
            ManagerFrame.MainFrame.Navigate(new WorkOfEmployeePage(((sender as Button).DataContext as Employee).EmployeeID));
        }


        public bool DeleteEmployee(Employee CurrentEmployee)
        {
            var result = MessageBox.Show("Удалить сотрудника?", "Удаление", MessageBoxButton.YesNo, MessageBoxImage.Question);
            if (result == MessageBoxResult.Yes)
            {
                DB.db.Employee.Remove(CurrentEmployee);
                DB.Save();
                Load();
                return true;

            }
            return false;
        }

        private void EmployeeList_KeyUp(object sender, KeyEventArgs e)
        {
            if (e.Key == Key.Delete)
            {
                DeleteEmployee(EmployeeList.CurrentItem as Employee);
            }
        }

        private void TxtSearch_TextChanged(object sender, TextChangedEventArgs e)
        {
            if (TxtSearch.Text == string.Empty)
            {
                Load();
            }
            else
            {
                List<Employee> Employees = DB.db.Employee.ToList();
                List<Employee> LevenshteinList = new List<Employee>();
                foreach (var item in Employees)
                {
                    if (Helper.LevenshteinDistance(item.LastName, TxtSearch.Text) <= 3)
                    {

                        LevenshteinList.Add(item);
                    }
                }
                EmployeeList.ItemsSource = LevenshteinList;
            }

        }
    }
}