onasty: mailer/service.go (7ff621d)

Olexandr Smirnov web: forgot password (#169)..., 10 months ago

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
}

1	package main
2
3	import (
4	"context"
5	"log/slog"
6	)
7
8	type Service struct {
9	appURL string
10	frontendURL string
11
12	mg *Mailgun
13	}
14
15	func NewService(appURL, frontendURL string, mg Mailgun) Service {
16	return &Service{
17	appURL: appURL,
18	frontendURL: frontendURL,
19	mg: mg,
20	}
21	}
22
23	func (s Service) Send(
24	ctx context.Context,
25	cancel context.CancelFunc,
26	receiver, templateName string,
27	templateOpts map[string]string,
28	) error {
29	tmpl, err := getTemplate(s.appURL, s.frontendURL, templateName)
30	if err != nil {
31	return err
32	}
33
34	t := tmpl(templateOpts)
35
36	go func() {
37	select {
38	case <-ctx.Done():
39	return
40	default:
41	if err := s.mg.Send(ctx, receiver, t.Subject, t.Body); err != nil {
42	slog.ErrorContext(ctx, "failed to send email",
43	"template_name", templateName,
44	"err", err)
45	}
46	cancel()
47	}
48	}()
49
50	return nil
51	}