package mail

import (
	"crypto/rand"
	"crypto/rsa"
	"crypto/x509"
	"crypto/x509/pkix"
	"math/big"
	"time"
)

func getDummyPrivateKey() (*rsa.PrivateKey, error) {
	privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
	if err != nil {
		return nil, err
	}
	return privateKey, nil
}

func getDummyCertificate(privateKey *rsa.PrivateKey) (*x509.Certificate, error) {
	template := &x509.Certificate{
		SerialNumber: big.NewInt(1234),
		Subject:      pkix.Name{Organization: []string{"My Organization"}},
		NotBefore:    time.Now(),
		NotAfter:     time.Now().AddDate(1, 0, 0),
		KeyUsage:     x509.KeyUsageDigitalSignature,
		ExtKeyUsage:  []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
	}

	certDER, err := x509.CreateCertificate(rand.Reader, template, template, &privateKey.PublicKey, privateKey)
	if err != nil {
		return nil, err
	}

	cert, err := x509.ParseCertificate(certDER)
	if err != nil {
		return nil, err
	}

	return cert, nil
}