/// <summary>
/// Removes attachment links to entity
/// </summary>
/// <param name="entity">entity (user)</param>
/// <param name="attachment">attachment </param>
/// <param name="permissions">Remove selected permissions. If null provided - removes all linked entities</param>
public void RemoveAttachment(User entity, Server.Model.Attachment.Attachment attachment, ICollection <Permission> permissions = null)
{
//using (var tran = Db.Database.BeginTransaction())
//{
try
{
if (!Db.Set <User>().Any(it => it.Id == entity.Id))
{
throw new ArgumentException("Can't Remove. User do not exist.");
}
if (!Db.Set <Server.Model.Attachment.Attachment>().Any(it => it.Id == attachment.Id))
{
throw new ArgumentException("Can't Remove. Attachment do not exist.");
}
if (permissions == null)
{
var attachPerms =
Db.Set <AttachmentPermission>()
.Where(it => it.UserId == entity.Id && it.AttachmentId == attachment.Id);
foreach (var attachmentPermission in attachPerms)
{
Db.Set <AttachmentPermission>().Remove(attachmentPermission);
}
}
else
{
foreach (var permission in permissions)
{
var attachPerm =
Db.Set <AttachmentPermission>()
.Single(
it =>
it.UserId == entity.Id && it.AttachmentId == attachment.Id &&
permission.Id == it.PermissionId);
Db.Set <AttachmentPermission>().Remove(attachPerm);
}
}
Db.SaveChanges();
// tran.Commit();
}
catch (Exception ex)
{
LogEventManager.Logger.Error(ex.Message, ex);
// tran.Rollback();
throw;
}
// }
}
/// <summary>
/// Links an attachment to entity
/// </summary>
/// <param name="entity">entity(user)</param>
/// <param name="attachment">attachment</param>
/// <param name="permissions">Permissions for attachment. If null provided - then we set full access and mark entity as owner</param>
public void LinkAttachment(User entity, Server.Model.Attachment.Attachment attachment, ICollection <Permission> permissions = null)
{
//using (var tran = Db.Database.BeginTransaction())
//{
try
{
var isOwner = false;
if (!Db.Set <User>().Any(it => it.Id == entity.Id))
{
throw new ArgumentException("Cant link. User do not exist");
}
if (!Db.Set <Server.Model.Attachment.Attachment>().Any(it => it.Id == attachment.Id))
{
throw new ArgumentException("Cant link. Attachment do not exist");
}
if (permissions == null)
{
permissions = Db.Set <Permission>().Where(it => it.IsActive).ToList();
isOwner = true;
}
foreach (var permission in permissions)
{
Db.Set <AttachmentPermission>().Add(new AttachmentPermission
{
PermissionId = permission.Id,
AttachmentId = attachment.Id,
UserId = entity.Id,
IsOwner = isOwner
});
}
Db.SaveChanges();
// tran.Commit();
}
catch (Exception ex)
{
LogEventManager.Logger.Error(ex.Message, ex);
// tran.Rollback();
throw;
}
// }
}
