//-----------------------------------------------------------------------
// <copyright file="LectureList.cs" company="BTU/IIT">
//     Company copyright tag.
// </copyright>
// <author>stubbfel</author>
// <sience>10.06.2013</sience>
//----------------------------------------------------------------------
namespace CampusAppWPortalLib8.Model.Lecture
{
    using System.Collections.ObjectModel;
    using System.Linq;
    using System.Xml.Serialization;

    /// <summary>
    /// Model for a List of LectureActivity
    /// </summary>
    /// <typeparam name="T">T : LectureActivity</typeparam>
    [XmlRoot("lsf_auszug")]
    public class LectureList<T> where T : LectureActivity
    {
        #region Constructor

        /// <summary>
        /// Initializes a new instance of the <see cref="LectureList {T}" /> class.
        /// </summary>
        public LectureList()
        {
        }

        #endregion

        #region Proberty

        /// <summary>
        ///  Gets or sets List of the activities
        /// </summary>
        [XmlArray("veranstaltungsliste")]
        [XmlArrayItem("veranstaltung")]
        public ObservableCollection<T> Activities { get; set; }

        #endregion

        #region Methods

        /// <summary>
        /// Method return a certain activity
        /// </summary>
        /// <param name="id"> id of the  activity</param>
        /// <returns> the activity (FirstOrDefault)</returns>
        public T GetActivity(int id)
        {
            T activity = this.Activities.Where(p => p.Id == id).FirstOrDefault();
            return activity;
        }

        /// <summary>Filter by course string.</summary>
        /// <remarks>Stubbfel, 10.09.2013.</remarks>
        /// <param name="filter">Specifies the filter.</param>
        public void FilterByCourseTitle(string filter)
        {
            ObservableCollection<T> filteredCollection = new ObservableCollection<T>();
            filter = filter.Trim().ToLower();
            foreach (T activity in this.Activities)
            {
                activity.CreateCourseString();
                if (activity.Title.ToLower().Contains(filter))
                {
                    filteredCollection.Add(activity);
                }
            }

            this.Activities = filteredCollection;
        }
        #endregion
    }
}