internal static JArray AddPreviewComment(string comments, string userName, int page, double x, double y,
string text, out PreviewCommentData commentData)
{
if (string.IsNullOrEmpty(userName) || page < 0 || x < 0 || y < 0)
{
throw new InvalidOperationException("Incorrect comment parameter.");
}
if (string.IsNullOrEmpty(comments))
{
comments = "[]";
}
var commentsArray = (JArray)JsonConvert.DeserializeObject(comments);
commentData = new PreviewCommentData
{
Id = Guid.NewGuid().ToString(),
CreatedBy = userName,
CreationDate = DateTime.UtcNow,
Page = page,
X = x,
Y = y,
Text = text?.Substring(0, Math.Min(text.Length, 500))
};
var index = 0;
// Find the correct place to insert the comment to. The order is determined
// by the page and the comment coordinates inside the page.
foreach (var jToken in commentsArray)
{
var currentPage = jToken["page"]?.Value <int>() ?? 0;
var currentX = jToken["x"]?.Value <double>() ?? 0;
var currentY = jToken["y"]?.Value <double>() ?? 0;
// current comment comes before the new one
if (currentPage < page || currentPage == page && (currentY < y || Math.Abs(currentY - y) < 0.0001 && currentX <= x))
{
index++;
continue;
}
break;
}
commentsArray.Insert(index, JToken.FromObject(commentData));
return(commentsArray);
}
public PreviewComment(PreviewCommentData data)
{
Data = data;
// Workaround: we only have a domain\username information here that cannot be used
// to load a node head. We have to try to load the whole user node in elevated mode
// and check for permissions after.
var caller = AccessProvider.Current.GetOriginalUser();
var user = SystemAccount.Execute(() => string.IsNullOrEmpty(data.CreatedBy) ? null : User.Load(data.CreatedBy));
if (user == null || !SecurityHandler.HasPermission(caller, user.Id, PermissionType.Open))
{
user = User.Somebody;
}
CreatedBy = new PreviewCommentUser
{
Id = user.Id,
Path = user.Path,
Username = user.Username,
DisplayName = user.DisplayName,
AvatarUrl = user.AvatarUrl
};
}