public async Task <InviteFriendPayload> InviteFriendAsync(
InviteFriendInput input,
[GlobalState] string currentUserEmail,
PersonByEmailDataLoader personByEmail,
[Service] IPersonRepository personRepository,
CancellationToken cancellationToken)
{
if (string.IsNullOrEmpty(input.Email))
{
throw new QueryException(
ErrorBuilder.New()
.SetMessage("The email address cannot be empty.")
.SetCode("EMAIL_EMPTY")
.Build());
}
IReadOnlyList <Person> people =
await personByEmail.LoadAsync(
cancellationToken, input.Email, currentUserEmail)
.ConfigureAwait(false);
if (people[0] is null)
{
throw new QueryException(
ErrorBuilder.New()
.SetMessage("The provided friend email address is invalid.")
.SetCode("EMAIL_UNKNOWN")
.Build());
}
await personRepository.AddFriendIdAsync(
people[1].Id, people[0].Id, cancellationToken)
.ConfigureAwait(false);
await personRepository.AddFriendIdAsync(
people[0].Id, people[1].Id, cancellationToken)
.ConfigureAwait(false);
return(new InviteFriendPayload(
people[1].AddFriendId(people[0].Id),
input.ClientMutationId));
}
