Refactor cert.go and fiskalhr.go to add methods for retrieving certif…

…icate information

cert.go

@@ -255,3 +255,33 @@ func (cm *certManager) displayCertInfoKeyPoints() [][2]string {
 
 	return result
 }
+
+// getCertORG returns the organization name from the certificate.
+// The organization name is typically included in the certificate's subject field.
+func (cm *certManager) getCertORG() string {
+	return cm.certORG
+}
+
+// getCertSERIAL returns the serial number from the certificate.
+// The serial number is a unique identifier assigned by the certificate issuer.
+func (cm *certManager) getCertSERIAL() string {
+	return cm.certSERIAL
+}
+
+// isExpired returns whether the certificate is expired.
+// This indicates if the certificate's validity period has ended.
+func (cm *certManager) isExpired() bool {
+	return cm.expired
+}
+
+// isExpiringSoon returns whether the certificate is expiring soon.
+// This indicates if the certificate is approaching its expiration date.
+func (cm *certManager) isExpiringSoon() bool {
+	return cm.expire_soon
+}
+
+// daysUntilExpire returns the number of days until the certificate expires.
+// This provides a countdown of days remaining before the certificate becomes invalid.
+func (cm *certManager) daysUntilExpire() uint16 {
+	return cm.expire_days
+}

fiskalhr.go

@@ -195,6 +195,36 @@ func (fe *FiskalEntity) DisplayCertInfoKeyPoints() [][2]string {
 	return fe.cert.displayCertInfoKeyPoints()
 }
 
+// GetCertORG returns the organization name from the certificate.
+// The organization name is typically included in the certificate's subject field.
+func (fe *FiskalEntity) GetCertORG() string {
+	return fe.cert.certORG
+}
+
+// GetCertSERIAL returns the serial number from the certificate.
+// The serial number is a unique identifier assigned by the certificate issuer.
+func (fe *FiskalEntity) GetCertSERIAL() string {
+	return fe.cert.certSERIAL
+}
+
+// IsExpired returns whether the certificate is expired.
+// This indicates if the certificate's validity period has ended.
+func (fe *FiskalEntity) IsExpired() bool {
+	return fe.cert.expired
+}
+
+// IsExpiringSoon returns whether the certificate is expiring soon.
+// This indicates if the certificate is approaching its expiration date.
+func (fe *FiskalEntity) IsExpiringSoon() bool {
+	return fe.cert.expire_soon
+}
+
+// DaysUntilExpire returns the number of days until the certificate expires.
+// This provides a countdown of days remaining before the certificate becomes invalid.
+func (fe *FiskalEntity) DaysUntilExpire() uint16 {
+	return fe.cert.expire_days
+}
+
 // GenerateZKI generates the ZKI (Zaštitni Kod Izdavatelja) based on the given data.
 // The ZKI is a unique identifier for the invoice, generated by signing the concatenated
 // invoice data with the taxpayer's private key and hashing the signature.