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;
using System.Linq.Expressions;
using System.Data.Entity.Migrations;

namespace ROGOZ.Pages
{
    /// <summary>
    /// Логика взаимодействия для AddEditPage.xaml
    /// </summary>
    public partial class AddEditPage : Page
    {
        private user1Entities _context = new user1Entities();
        private List<string> listUsers = new List<string>();
        private Task _currentTask = null;

        
        public AddEditPage()
        {
            InitializeComponent();
            //DPCreateDateTime.SelectedDate = DateTime.Today;
            //DPDeadLine.SelectedDate = DateTime.Today;
            DataContext = _currentTask;
            CmbStatus.ItemsSource = Status.FillStatus();
            CmbTaskType.ItemsSource = WorkType.FillWorkType();
            foreach (var user in _context.User.ToList())
            {
                listUsers.Add(user.getFIO());
            }
            CmbExecutor.ItemsSource = listUsers;
        }

        public AddEditPage(Task selectedTask)
        {
            InitializeComponent();
            //DPCreateDateTime.DisplayDate = DateTime.Now.Date;
            //DPDeadLine.SelectedDate = DateTime.Today;
            _currentTask = selectedTask;
            CmbStatus.ItemsSource = Status.FillStatus();
            CmbExecutor.Text = _currentTask.Executor.User.getFIO();
            //CmbExecutor.ItemsSource = user1Entities.GetContext().Executor.ToList();
            CmbTaskType.ItemsSource = WorkType.FillWorkType();
            if (selectedTask != null)
                _currentTask = selectedTask;
            DataContext = _currentTask;

            foreach (var user in _context.User.ToList())
            {
                listUsers.Add(user.getFIO());
            }
            CmbExecutor.ItemsSource = listUsers;
        }
        private void BtnCancel_Click(object sender, RoutedEventArgs e)
        {
            NavigationService.GoBack();
        }

        private string CheckErrors()
        {
            var errorBuilder = new StringBuilder();
            if (string.IsNullOrWhiteSpace(TaskNameTB.Text))
                errorBuilder.AppendLine("Укажите название заголовка!");
            if (CmbStatus.Text == null)
                errorBuilder.AppendLine("Выберите статус!");
            if (CmbTaskType.Text == null)
                errorBuilder.AppendLine("Выберите характеристику!");

            if (errorBuilder.Length > 0) //проверка на ошибку
            {
                MessageBox.Show(errorBuilder.ToString());
                return errorBuilder.ToString();
            }
            else return null;

        }
        private void BtnSaveTask_Click(object sender, RoutedEventArgs e)
        {
            //var errorMessage = CheckErrors();
            if (CheckErrors() == null)
            {
                if (_currentTask == null)
                {
                    try
                    {
                        var selectedTask = new Task
                        {
                            //ExecutorID = int.Parse(CmbExecutor.Text),
                            Executor = user1Entities.GetContext().Executor.FirstOrDefault(o=>o.User.getFIO()== CmbExecutor.Text),
                            Title = TaskNameTB.Text,
                            Description = TaskDescriptionTB.Text,
                            CreateDateTime = DateTime.Parse(DPCreateDateTime.Text),
                            Deadline = DateTime.Parse(DPDeadLine.Text),
                            Difficulty = Double.Parse(DifficultyTB.Text),
                            Time = int.Parse(TimeTB.Text),
                            Status = CmbStatus.Text,
                            WorkType = CmbTaskType.Text,
                            IsDeleted = false
                        };
                        user1Entities.GetContext().Task.Add(selectedTask);
                        user1Entities.GetContext().SaveChanges();
                        MessageBox.Show("Задача добавлена");
                        NavigationService.GoBack();
                    }
                    catch
                    {
                        MessageBox.Show(CheckErrors(), "Ошибка", MessageBoxButton.OK, MessageBoxImage.Error);

                    }
                }
                else
                {
                    var context = user1Entities.GetContext();
                    context.SaveChanges();
                    MessageBox.Show("Задача отредактирована");
                    NavigationService.GoBack();
                }

            }

        }   
    }
}