/// <summary>
/// Executes command
/// </summary>
/// <param name="parameter">
/// Command parameters
/// </param>
public override void Execute(object parameter)
{
Core.Logger.GetLogger.LogAsync(Core.LogMode.Debug, $"Execute {nameof(WriteCommentCommand)}");
// gets comment text
string commentText = photoInsideViewModel.CommentText;
Core.Logger.GetLogger.LogAsync(Core.LogMode.Info, $"Get {nameof(commentText)} with value = {commentText}. Length = {commentText.Length}");
// create comment
DataAccess.Entities.Comment comment = new DataAccess.Entities.Comment
{
Text = commentText,
User = Services.DataStorage.Instance.LoggedUser,
Photo = photoInsideViewModel.Photo
};
Core.Logger.GetLogger.LogAsync(Core.LogMode.Debug, "Create comment");
// update view
photoInsideViewModel.Comments.Add(new DataAccess.Wrappers.CommentWrapper(comment));
Core.Logger.GetLogger.LogAsync(Core.LogMode.Debug, "Update view");
// update database
photoInsideViewModel.UnitOfWork.CommentRepository.Insert(comment);
photoInsideViewModel.UnitOfWork.Save();
Core.Logger.GetLogger.LogAsync(Core.LogMode.Debug, "Update data base");
// clear current comment text
Core.Logger.GetLogger.LogAsync(Core.LogMode.Debug, "Clear comment");
photoInsideViewModel.CommentText = string.Empty;
}
// CONSTRUCTORS
/// <summary>
/// Initializes a new instance of <see cref="SingleViewModel"/>
/// </summary>
/// <param name="comment">
/// An instance of <see cref="DataAccess.Entities.Comment"/>
/// </param>
/// <param name="isEditingEnabled">
/// Determines if page is only for reading or not
/// </param>
/// <exception cref="System.ArgumentNullException">
/// Throws when <paramref name="comment"/> is null
/// </exception>
public SingleViewModel(DataAccess.Entities.Comment comment, bool isEditingEnabled)
: base(shownEntity: comment, isWritingEnabled: isEditingEnabled)
{
ILookup <bool, string> groupedByLike = comment.Likes.ToLookup(c => c.IsLiked, u => u.User.NickName);
this.likedUserNickname = groupedByLike[true].ToArray();
this.disLikedUserNickname = groupedByLike[false].ToArray();
// commands
deleteOrUpdateCommand = isEditingEnabled ? (ICommand) new Commands.MultipleCommand(new CommandBase[]
{
new Commands.Admin.Comment.Single.ValidateCommand(this),
new Commands.Admin.UpdateCommand()
})
: (ICommand) new Commands.Admin.DeleteCommand();
}
// FILTERING METHOD
/// <summary>
/// Sets filter predicate
/// </summary>
/// <param name="entity">
/// The entities for which predicate is applied
/// </param>
/// <returns>
/// Boolean values which determines if entity is allowed by predicate or not
/// </returns>
protected override bool FilterPredicate(object entity)
{
DataAccess.Entities.Comment commentToFilter = (DataAccess.Entities.Comment)entity;
bool isShown = true;
// checks text
if (text != null)
{
isShown &= Has(comment: commentToFilter, textSubstring: text);
}
// checks date
isShown &= Where(commentToFilter, from, to);
// checks user nickname
if (userNickname != null)
{
isShown &= Where(commentToFilter, userNickname);
}
return(isShown);
}
