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mailer.go
61 lines (49 loc) · 1.15 KB
/
mailer.go
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package mailer
import (
"bytes"
"embed"
"github.com/go-mail/mail/v2"
"html/template"
"time"
)
//go:embed "templates"
var templateFS embed.FS
type Mailer struct {
dialer *mail.Dialer
sender string
}
func New(host string, port int, username, password, sender string) Mailer {
dialer := mail.NewDialer(host, port, username, password)
dialer.Timeout = 5 * time.Second
return Mailer{
dialer: dialer,
sender: sender,
}
}
func (m Mailer) Send(recipient, templateFile string, data any) error {
tmpl, err := template.New("email").ParseFS(templateFS, "templates/"+templateFile)
if err != nil {
return err
}
subject := new(bytes.Buffer)
err = tmpl.ExecuteTemplate(subject, "subject", data)
if err != nil {
return err
}
htmlBody := new(bytes.Buffer)
err = tmpl.ExecuteTemplate(htmlBody, "htmlBody", data)
if err != nil {
return nil
}
msg := mail.NewMessage()
msg.SetHeader("To", recipient)
msg.SetHeader("From", m.sender)
msg.SetHeader("Subject", subject.String())
msg.SetBody("text/plain", subject.String())
msg.AddAlternative("text/html", htmlBody.String())
err = m.dialer.DialAndSend(msg)
if err != nil {
return err
}
return nil
}