/*
 * Copyright 2019 faddenSoft
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Runtime.CompilerServices;
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 SourceGenWPF.ProjWin {
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window, INotifyPropertyChanged {
        /// <summary>
        private MainController mUI;

        public MainWindow() {
            InitializeComponent();

            // TODO: verify that RuntimeData dir is accessible

            this.DataContext = this;
            mUI = new MainController(this);

            codeListView.ItemsSource = new DisplayList(500);

            GridView gv = (GridView)codeListView.View;
            //gv.Columns[0].Width = 50;
        }


        /// <summary>
        /// INotifyPropertyChanged event
        /// </summary>
        public event PropertyChangedEventHandler PropertyChanged;

        /// <summary>
        /// Call this when a notification-worthy property changes value.
        /// 
        /// The CallerMemberName attribute puts the calling property's name in the first arg.
        /// </summary>
        /// <param name="propertyName">Name of property that changed.</param>
        private void NotifyPropertyChanged([CallerMemberName] string propertyName = "") {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }

        private bool mShowCodeListView;

        /// <summary>
        /// Which panel are we showing, launchPanel or codeListView?
        /// </summary>
        public bool ShowCodeListView {
            get {
                return mShowCodeListView;
            }
            set {
                mShowCodeListView = value;
                NotifyPropertyChanged("LaunchPanelVisibility");
                NotifyPropertyChanged("CodeListVisibility");
            }
        }

        /// <summary>
        /// Returns true if we should be showing the launch panel.
        /// (Intended for use from XAML.)
        /// </summary>
        public Visibility LaunchPanelVisibility {
            get { return mShowCodeListView ? Visibility.Hidden : Visibility.Visible; }
        }

        /// <summary>
        /// Returns true if we should be showing the code ListView.
        /// (Intended for use from XAML.)
        /// </summary>
        public Visibility CodeListVisibility {
            get { return mShowCodeListView ? Visibility.Visible : Visibility.Hidden; }
        }

        /// Version string, for display.
        /// </summary>
        public string ProgramVersionString {
            get { return App.ProgramVersion.ToString(); }
        }

        private void AssembleCmd_Executed(object sender, ExecutedRoutedEventArgs e) {
            // test
            Debug.WriteLine("assembling");
        }

        private void RecentProject_Executed(object sender, ExecutedRoutedEventArgs e) {
            if (!int.TryParse((string)e.Parameter, out int recentIndex) ||
                    recentIndex < 1 || recentIndex > MainController.MAX_RECENT_PROJECTS) {
                throw new Exception("Bad parameter: " + e.Parameter);
            }
            recentIndex--;

            Debug.WriteLine("Recent project #" + recentIndex);
            mUI.OpenRecentProject(recentIndex);
        }

        private void CodeListView_SelectionChanged(object sender, SelectionChangedEventArgs e) {
            Debug.WriteLine("SEL: add " + e.AddedItems.Count + ", rem " + e.RemovedItems.Count);
        }
    }
}