private bool BeforeSavePerson(Person person, EntityInfo info)
{
if (info.EntityState == EntityState.Added)
{
person.UserId = UserId;
// assign a new color if necessary
if (string.IsNullOrEmpty(person.Color))
{
// default to first color
person.Color = Colors.List[0];
// try to assign a color that hasn't yet been assigned
var colors = People.Select(p => p.Color).Distinct();
for (int i = 0; i < Colors.List.Count; i++)
{
if (!colors.Contains(Colors.List[i]))
{
person.Color = Colors.List[i];
break;
}
}
}
return(true);
}
if (info.EntityState == EntityState.Deleted)
{
// reassign all devices to Shared
var shared = ValidationRepository.People.FirstOrDefault(p => p.Name == "Shared");
if (shared != null)
{
var devices = ValidationRepository.Devices.Where(d => d.PersonId == person.PersonId);
foreach (var d in devices)
{
d.PersonId = shared.PersonId;
}
ValidationRepository.SaveChanges();
}
return(true);
}
return(UserId == person.UserId || throwCannotSaveEntityForThisUser(person.UserId));
}
private bool BeforeSaveDevice(Device device, EntityInfo info)
{
if (info.EntityState == EntityState.Deleted)
{
// when the client tries to delete a device, instead of deleting it we mark it with an
// enabled status of NULL. this is so that the next time the client Posts records, the
// ControlMessage returned can instruct the device to dissasociate. at that point, the
// device is actually removed.
var dbDevice = ValidationRepository.Devices.FirstOrDefault(d => d.DeviceId == device.DeviceId);
if (dbDevice != null)
{
dbDevice.Enabled = null;
ValidationRepository.SaveChanges();
return(false);
}
}
var person = device.PersonId.HasValue ? ValidationContext.People.Find(device.PersonId) : null;
return((null != person)
? UserId == person.UserId || throwPersonDoesNotBelongToThisUser(person.UserId)
: UserId == device.UserId || throwCannotSaveEntityForThisUser(device.UserId));
}
