onasty/mailer/service.go(view raw)
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package main
import (
"context"
"log/slog"
)
type Service struct {
appURL string
frontendURL string
mg *Mailgun
}
func NewService(appURL, frontendURL string, mg *Mailgun) *Service {
return &Service{
appURL: appURL,
frontendURL: frontendURL,
mg: mg,
}
}
func (s Service) Send(
ctx context.Context,
cancel context.CancelFunc,
receiver, templateName string,
templateOpts map[string]string,
) error {
tmpl, err := getTemplate(s.appURL, s.frontendURL, templateName)
if err != nil {
return err
}
t := tmpl(templateOpts)
go func() {
select {
case <-ctx.Done():
return
default:
if err := s.mg.Send(ctx, receiver, t.Subject, t.Body); err != nil {
slog.ErrorContext(ctx, "failed to send email",
"template_name", templateName,
"err", err)
}
cancel()
}
}()
return nil
}
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