/// <summary>
/// Create a new Project Aggregate instance
/// </summary>
/// <param name="donor">The Donor which funded the Project</param>
/// <param name="analyst">The Analyst associated to the Project</param>
/// <param name="acronym">The Acronym of the Project</param>
/// <param name="projectType">The Type of Project</param>
/// <param name="tenderProcessType">The Tender Process applied to the Project</param>
/// <param name="startDate">The estimated start date of the Project</param>
public ProjectAggregate(DonorAggregate donor, Analyst analyst, string acronym, TypeOfProject projectType,
TypeOfTenderProcess tenderProcessType, DateTime?startDate = null)
{
// pre-conditions
donor.Requires("Donor").IsNotNull();
acronym.Requires("Acronym").IsNotNullOrEmpty();
analyst.Requires("Analyst").IsNotNull();
// initialization
Id = Guid.NewGuid();
Status = Status.InPreparation;
Donor = donor;
Acronym = acronym;
ProjectType = projectType;
TenderProcessType = tenderProcessType;
Analyst = analyst;
ExpectedStartDate = startDate ?? DateTime.UtcNow;
// TODO
TierLevel = TierLevel.Tier1;
// associations
Donor.AssignProjectToDonor(this);
// events
DomainEvents.Raise(new ProjectCreated {
Project = this
});
}