public async Task <StatementExtension> MakeDecisionAsync(StatementExtension perceptionStatement, IPersonRepository personRepository,
PersonDomainService personDomainService)
{
if (perceptionStatement == null)
{
return(null);
}
if (personRepository == null)
{
throw new ArgumentException("Person application service asked to make a decision without a person repository");
}
if (personDomainService == null)
{
throw new ArgumentException("Person application service asked to make a decision without a person domain service");
}
var personVerbs = new List <string>()
{
Verb.PersonCreationRequested, Verb.PersonRequested, Verb.PersonUpdateRequested
};
if (!personVerbs.Contains(perceptionStatement.verbString()))
{
return(null);
}
StatementExtension decisionStatement = null;
await personRepository.SavePerceptionAsync(perceptionStatement);
switch (perceptionStatement?.verbString())
{
case Verb.PersonCreationRequested:
var personToCreate = perceptionStatement.targetData <Person>();
decisionStatement = personDomainService.CreatePersonDecider(perceptionStatement, personToCreate);
break;
case Verb.PersonRequested:
var idOfPersonRequested = perceptionStatement.targetId();
var personRequested = personRepository.RetrievePerson(idOfPersonRequested);
decisionStatement = personDomainService.RetrievePersonDecider(perceptionStatement, personRequested);
break;
case Verb.PersonUpdateRequested:
var idOfPerson = perceptionStatement.targetId();
var personToUpdate = personRepository.RetrievePerson(idOfPerson);
decisionStatement = personDomainService.UpdatePersonDecider(perceptionStatement, personToUpdate);
break;
}
await personRepository.SaveDecisionAsync(decisionStatement);
return(decisionStatement);
}
public void Create_person_decider_should_throw_if_the_perception_statement_does_not_have_a_verb()
{
var perceptionStatement = new StatementExtension();
Assert.ThrowsException <InvalidOperationException>(() => _personDomainService.CreatePersonDecider(perceptionStatement, null));
}