private void Cancel(string userName, CampaignState newState, Campaign context)
{
if (context.State == CampaignState.Cancelled)
{
throw new InvalidOperationException("Can't cancel a campaign that is already cancelled.");
}
if (context.State == CampaignState.Completed)
{
throw new InvalidOperationException("Can't cancel a campaign once it has completed.");
}
string message = String.Format("{0} cancelled {1} campaign {2}", userName, context.State.Name, this.Name);
AdvertiserNotificationService.NotifyAdvertiser(context.Advertiser, message);
context.State = newState;
context.LastUpdatedBy = userName;
}
private void Approve(string userName, CampaignState newState)
{
if (this.State == CampaignState.Approved)
{
throw new InvalidOperationException("Can't approve a campaign once it has already been approved.");
}
if (this.State == CampaignState.Completed)
{
throw new InvalidOperationException("Can't approve a campaign once it has completed.");
}
if (this.State == CampaignState.Active)
{
throw new InvalidOperationException("Can't approve a campaign once it is active.");
}
string message = String.Format("{0} approved {1} campaign {2}", userName, this.State.Name, this.Name);
AdvertiserNotificationService.NotifyAdvertiser(this.Advertiser, message);
this.State = newState;
this.LastUpdatedBy = userName;
}