using System;

using System.Net;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Documents;

using System.Windows.Ink;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Animation;

using System.Windows.Shapes;

using Iri.Modernisation.Data.Models;

using Iri.Modernisation.BaseMVVM.Commands;

using Iri.Modernisation.BaseMVVM.ViewModel;

using System.Collections.Generic;

using System.IO;

namespace Iri.Modernisation.Controls.ViewModel

{

    /// <summary>

    /// ViewModel du module BookTimeLine

    /// </summary>

    public class BookTimeLineVM : BaseMVVM.ViewModel.ViewModel

    {

        static public double ratioPixMs = 6000;

        private VideoBook _selectedBook;

        /// <summary>

        /// Livre sélectionné

        /// </summary>

        public VideoBook SelectedBook

        {

            get

            {

                return _selectedBook;

            }

        }

        /// <summary>

        /// Nom de l'auteur

        /// </summary>

        public String AuthorFullname

        {

            get

            {

                return Author.UserName;

            }

        }

        private String _title;

        /// <summary>

        /// Titre du Livre

        /// </summary>

        public String Title 

        {

            get

            {

                return _title;

            }

            private set

            {

                _title = value;

                _selectedBook.Title = value;

                OnPropertyChanged("Title");

            }

        }

        private User _author;

        /// <summary>

        /// Auteur du Livre

        /// </summary>

        public User Author

        {

            get

            {

                return _author;

            }

            private set

            {

                _author = value;

                _selectedBook.Author = value;

                OnPropertyChanged("Author");

            }

        }

        private VideoChapter[] _chapters;

        /// <summary>

        /// Chapitre du Livre

        /// </summary>

        public VideoChapter[] Chapters

        {

            get

            {

                return _chapters;

            }

            private set

            {

                _chapters = value;

                _selectedBook.Chapters = value;

                OnPropertyChanged("Chapters");

            }

        }

        private List<SegmentIndex>[] _segmentIndex;

        /// <summary>

        /// Liste des Index des Chapitres

        /// </summary>

        public List<SegmentIndex>[] SegmentIndex

        {

            get

            {

                return _segmentIndex;

            }

            set

            {

                _segmentIndex = value;

                OnPropertyChanged("SegmentIndex");

            }

        }

        private List<Annotation>[] _annotations;

        /// <summary>

        /// Liste des Annotations

        /// </summary>

        public List<Annotation>[] Annotations

        {

            get

            {

                return _annotations;

            }

            set

            {

                _annotations = value;

                OnPropertyChanged("Annotations");

            }

        }

        private TimeSpan _totalDuration;

        /// <summary>

        /// Durée totale du Livre

        /// </summary>

        public double TotalDuration

        {

            get

            {

                return _totalDuration.TotalMilliseconds;

            }

            set

            {

                _totalDuration = new TimeSpan(0, 0, 0, 0, (int)value);

                _selectedBook.Duration = new TimeSpan(0, 0, 0, 0, (int)value); ;

                OnPropertyChanged("Duration");

            }

        }

        private double _position;

        /// <summary>

        /// Position du curseur de lecture

        /// </summary>

        public double Position

        {

            get

            {

                return _position;

            }

            set

            {

                _position = value;

                OnPropertyChanged("Position");

            }

        }

        /// <summary>

        /// Constructeur    

        /// </summary>

        /// <param name="bookParam">VideoLivre à étudier</param>

        public BookTimeLineVM(VideoBook bookParam)

        {

            ScaleValue = 1;

            _selectedBook = bookParam;

            _title = bookParam.Title;

            _author = bookParam.Author;

            _chapters = bookParam.Chapters;

            _totalDuration = bookParam.Duration;

            _segmentIndex = new List<SegmentIndex>[bookParam.Chapters.Length];

            _annotations = new List<Annotation>[bookParam.Chapters.Length];

            LoadElements();

            Commands.TimeChange.Executed += new EventHandler<SLExtensions.Input.ExecutedEventArgs>(TimeChange_Executed);

        }

        private double _scaleValue;

        public double ScaleValue

        {

            get

            {

                return _scaleValue;

            }

            set

            {

                _scaleValue = value;

                OnPropertyChanged("ScaleValue");

                OnPropertyChanged("WidthTimeStrip");

            }

        }

        public double WidthTimeStrip

        {

            get

            {

                return (_selectedBook.Duration.TotalMilliseconds / BookTimeLineVM.ratioPixMs) * ScaleValue;

            }

        }

        private VideoViewerVM _videoViewerVM;

        /// <summary>

        /// ViewModel de VideoViewer

        /// </summary>

        public VideoViewerVM ViewModelVideoViewer

        {

            get

            {

                return _videoViewerVM;

            }

            set

            {

                _videoViewerVM = value;

                OnPropertyChanged("ViewModelVideoViewer");

            }

        }

        private void TimeChange_Executed(object sender, SLExtensions.Input.ExecutedEventArgs e)

        {

            if(e.Source == this)

            {

                ViewModelVideoViewer.GoTo(TimeSpan.FromMilliseconds(((double)e.Parameter)));

            }

        }

        /// <summary>

        /// Chargement des éléments du livre (Index et Annotations)

        /// </summary>

        private void LoadElements()

        {

            for(int key=0;key< _selectedBook.Chapters.Length;key++)

            {

              _segmentIndex[key] = _selectedBook.Chapters[key].Index;

              if (_selectedBook.Chapters[key].Annotations != null)

                {

                    _annotations[key] = _selectedBook.Chapters[key].Annotations;

                }

            }

        }

    }

}