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/
mailer.go
64 lines (55 loc) · 1.49 KB
/
mailer.go
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package mailer
import (
"crypto/tls"
"crypto/x509"
"net/smtp"
"github.com/18F/cg-dashboard/helpers"
"github.com/jordan-wright/email"
)
// Mailer is a interface that any mailer should implement.
type Mailer interface {
SendEmail(emailAddress string, subject string, body []byte) error
}
// InitSMTPMailer creates a new SMTP Mailer
func InitSMTPMailer(settings helpers.Settings) (Mailer, error) {
var tlsConfig *tls.Config
if settings.SMTPCert != "" {
pool := x509.NewCertPool()
pool.AppendCertsFromPEM([]byte(settings.SMTPCert))
tlsConfig = &tls.Config{
ServerName: settings.SMTPHost,
RootCAs: pool,
}
}
return &smtpMailer{
smtpHost: settings.SMTPHost,
smtpPort: settings.SMTPPort,
smtpUser: settings.SMTPUser,
smtpPass: settings.SMTPPass,
smtpFrom: settings.SMTPFrom,
smtpCert: settings.SMTPCert,
tlsConfig: tlsConfig,
}, nil
}
type smtpMailer struct {
smtpHost string
smtpPort string
smtpUser string
smtpPass string
smtpFrom string
smtpCert string
tlsConfig *tls.Config
}
func (s *smtpMailer) SendEmail(emailAddress, subject string, body []byte) error {
e := email.NewEmail()
e.From = s.smtpFrom
e.To = []string{" <" + emailAddress + ">"}
e.HTML = body
e.Subject = subject
addr := s.smtpHost + ":" + s.smtpPort
auth := smtp.PlainAuth("", s.smtpUser, s.smtpPass, s.smtpHost)
if s.tlsConfig != nil {
return e.SendWithTLS(addr, auth, s.tlsConfig)
}
return e.Send(s.smtpHost+":"+s.smtpPort, smtp.PlainAuth("", s.smtpUser, s.smtpPass, s.smtpHost))
}