public async Task HandleAsync(JoinGroupCommand command)
{
var invitationCode = InvitationCode.From(command.Code);
var invitation = await _invitationRepository.GetAsync(invitationCode) ?? throw new InvalidInvitationCodeException(command.Code);
var group = await _groupRepository.GetAsync(invitation.GroupId) ?? throw new GroupNotFoundException(invitation.GroupId);
invitation.Use(UserId.From(command.UserId), group, _clock);
}
private static void Build(EntityTypeBuilder <Invitation> invitation)
{
invitation.ToTable("Invitations");
invitation.HasKey(x => x.Id)
.HasName("PK_Invitations");
invitation.Property(x => x.Id)
.HasConversion(x => x.Value, x => InvitationId.From(x))
.ValueGeneratedNever()
.HasColumnName("InvitationId")
.IsRequired();
invitation.Property(x => x.GroupId).IsRequired();
invitation.HasOne <Group>()
.WithMany()
.HasForeignKey(x => x.GroupId)
.HasConstraintName("FK_Invitations_Groups")
.IsRequired();
invitation.OwnsOne <ExpirationTimeContainer>(
"_expirationTime",
b =>
{
b.Property <ExpirationTimeType>("_type")
.HasConversion <string>()
.IsRequired().HasColumnName("ExpirationTimeType");
b.Property <DateTimeOffset>("_start").IsRequired().HasColumnName("ExpirationStart");
b.Property <TimeSpan?>("_period").IsRequired(false).HasColumnName("ExpirationPeriod");
b.Ignore(x => x.ExpirationTime);
}
);
invitation.Ignore(x => x.ExpirationTime);
invitation.OwnsOne <UsageCounterContainer>(
"_usageCounter",
b =>
{
b.Property <UsageCounterType>("_type")
.HasConversion <string>()
.IsRequired().HasColumnName("UsageCounterType");
b.Property <int?>("_value").IsRequired(false).HasColumnName("UsageCounter");
b.Ignore(x => x.UsageCounter);
}
);
invitation.Ignore(x => x.UsageCounter);
invitation.HasIndex(x => x.InvitationCode)
.IsUnique();
invitation.Property(x => x.InvitationCode)
.HasConversion(x => x.Value, x => InvitationCode.From(x))
.HasMaxLength(8)
.IsRequired();
}