authenticating

type Gatekeeper interface {
	Sign(clientID string) (Token, error)
	Verify(tokenDigest string) (Token, error)
}

type Login struct {
	CPF    string `json:"cpf"`
	Secret string `json:"secret"`
}

type Repository interface {
	AddToken(ctx context.Context, token Token) error
	GetTokenByID(ctx context.Context, id primitive.ObjectID) (Token, error)
}

type Service interface {
	Sign(ctx context.Context, login Login, secretDigest string, clientID string) (Token, error)
	Verify(ctx context.Context, tokenDigest string) (Token, error)
}

type Token struct {
	ID       *primitive.ObjectID `json:"id,omitempty" bson:"_id"`
	ClientID string              `json:"client_id,omitempty" bson:"client_id"`
	Digest   string              `json:"token,omitempty" bson:"token"`
}