/// Copyright (c) 2021 Iiro Iivanainen, Harri Linna, Jere Pakkanen, Riikka Vilavaara
/// 
/// Permission is hereby granted, free of charge, to any person obtaining
/// a copy of this software and associated documentation files (the
/// "Software"), to deal in the Software without restriction, including
/// without limitation the rights to use, copy, modify, merge, publish,
/// distribute, sublicense, and/or sell copies of the Software, and to
/// permit persons to whom the Software is furnished to do so, subject to
/// the following conditions:
/// 
/// The above copyright notice and this permission notice shall be included
/// in all copies or substantial portions of the Software.
/// 
/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
/// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
/// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
/// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
/// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
/// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
/// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
/// 

using System.Windows;
using System.Windows.Controls;
using CoreLibrary;

namespace GroundhogApp.Dialogs
{
    /// <summary>
    /// Interaction logic for MetaDataDialog.xaml
    /// </summary>
    public partial class MetaDataDialog : Window
    {

        private readonly Metas metas;
        public Metas metasEditable;

        public MetaDataDialog(Metas metas)
        {
            InitializeComponent();

            this.metas = metas;

            metasEditable = Metas.Clone(metas);

            DataGrid.ItemsSource = metasEditable.MetaList;

        }


        /// <summary>
        /// Removes a row from editable metadata.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void RemoveRow(object sender, RoutedEventArgs e)
        {
            if (metasEditable.MetaList.Count == 0) return; // Nothing to delete

            var i = DataGrid.SelectedIndex;

            // if preview row is selected
            if (i >= metasEditable.MetaList.Count) return;

            // If nothing is selected
            if (i < 0)
            {
                metasEditable.MetaList.RemoveAt(metasEditable.MetaList.Count - 1);
                DataGrid.Items.Refresh();
            }

            Meta selectedItem = (Meta)DataGrid.SelectedItem;
            if (selectedItem != null)
            {
                // TODO: Not working, need to have reference to the collection to be removed
                metasEditable.MetaList.Remove(selectedItem);
                DataGrid.Items.Refresh();
            }
        }


        /// <summary>
        /// Resets the changes to the last save action or when the dialog was opened.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ResetChanges(object sender, RoutedEventArgs e)
        {
            metasEditable = Metas.Clone(metas);
            DataGrid.ItemsSource = metasEditable.MetaList;
        }


        /// <summary>
        /// Closes the dialog for saving changes to metadata.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void SaveChanges(object sender, RoutedEventArgs e)
        {
            DialogResult = true;
        }


        /// <summary>
        /// Creates a new row for metadata.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void CreateRow(object sender, RoutedEventArgs e)
        {
            metasEditable.MetaList.Add(new Meta("", ""));
            DataGrid.Items.Refresh();
        }
    }
}