service

type Backend interface {
	// CreateUser creates a user in the backend and returns an identifier string.
	CreateUser(ctx context.Context, invitation *invitations.Invitation) (string, error)
	// CanSendMail should return true if the backend can send mail
	CanSendMail() bool
	// SendMail sends a mail to the user with details on how to reedeem the invitation.
	SendMail(ctx context.Context, identifier string) error
}

type Option func(o *Options)

type Options struct {
	Logger log.Logger
	Config *config.Config
}

type Service interface {
	// Invite creates a new invitation. Invitation adds an external user to the organization.
	//
	// When creating a new invitation you have several options available:
	// 1. On invitation creation, Microsoft Graph can automatically send an
	//    invitation email directly to the invited user, or your app can use
	//    the inviteRedeemUrl returned in the creation response to craft your
	//    own invitation (through your communication mechanism of choice) to
	//    the invited user. If you decide to have Microsoft Graph send an
	//    invitation email automatically, you can control the content and
	//    language of the email using invitedUserMessageInfo.
	// 2. When the user is invited, a user entity (of userType Guest) is
	//    created and can now be used to control access to resources. The
	//    invited user has to go through the redemption process to access any
	//    resources they have been invited to.
	Invite(ctx context.Context, invitation *invitations.Invitation) (*invitations.Invitation, error)
}