using Magazyn.DataModels;
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.Shapes;

namespace Magazyn.Windows
{
    /// <summary>
    /// Interaction logic for AmountWindow.xaml
    /// </summary>
    /// 

    public partial class AmountWindow : Window
    {
        Fruit fruit;
        int type;
        int quantity;

        public delegate void ChangingAmountOfFruits(int amountChanged);
        public event ChangingAmountOfFruits SaveChangingAmountOfFruits;

        bool focusLock = false;

        public AmountWindow(Fruit fruit, int type, int quantity)
        {
            InitializeComponent();
            this.fruit = fruit;
            this.type = type;

            this.quantity = quantity;

            if (type == -1)
                this.Title = "Zmniejsz ilość: " + fruit.Name;
            else
                this.Title = "Zwiększ ilość: " + fruit.Name;

            fruitName.Text = fruit.Name;

            messageBox.Text = String.Format("Jaką ilość produktu chcesz {0} do magazynu?", (type > 0) ? "dodać" : "odjąć");

            try
            {
                fruitImage.ImageSource = fruit.ImageSource;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

            this.Loaded += AmountWindowLoaded;

        }

        private void AmountWindowLoaded(object sender, RoutedEventArgs e)
        {
             amountToChange.Focus();
        }

        private void SendNewQuantity()
        {
            int amount;
            try
            {
                amount = int.Parse(amountToChange.Text);
            }
            catch
            {
                ErrorWindow window = new ErrorWindow("Podana wartość jest nieprawidłowa, proszę podać liczbę dodatnią.");
                window.Owner = Application.Current.MainWindow;
                window.ShowDialog();
                amountToChange.Text = "0";
                return;
            }

            try
            {
                if (amount < 0)
                {
                    ErrorWindow window = new ErrorWindow("Podana wartość jest nieprawidłowa, proszę podać wartość dodatnią.");
                    window.Owner = Application.Current.MainWindow;
                    window.ShowDialog();
                    amountToChange.Text = "0";
                    return;
                }

            }
            catch (Exception ex)
            {
                throw new NotImplementedException(ex.Message);
            }

            SaveChangingAmountOfFruits.Invoke((type > 0) ? amount : -amount);
            this.Close();
        }

        private void saveButton_Click(object sender, RoutedEventArgs e)
        {
            SendNewQuantity();
        }

        private void cancelButton_Click(object sender, RoutedEventArgs e)
        {
            this.Close();
        }

        private void Window_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.Key == Key.Return) SendNewQuantity();
        }
    }
}