Initial commit

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

common/email/email.go

@@ -0,0 +1,74 @@
+package email
+
+import (
+	"bytes"
+	"context"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/service/ses"
+	"github.com/pkg/errors"
+	gomail "gopkg.in/gomail.v2"
+)
+
+// Send sends email without attachments.
+func (c *EmailClient) Send(ctx context.Context, sender string, mailList []*string, title string, body string) error {
+	if err := check(sender, mailList); err != nil {
+		return err
+	}
+	sesEmailInput := &ses.SendEmailInput{
+		Destination: &ses.Destination{
+			ToAddresses: mailList,
+		},
+		Message: &ses.Message{
+			Body: &ses.Body{
+				Html: &ses.Content{
+					Data: aws.String(body)},
+			},
+			Subject: &ses.Content{
+				Data: aws.String(title),
+			},
+		},
+		Source: aws.String(sender),
+	}
+	if _, err := c.ses.SendEmail(sesEmailInput); err != nil {
+		return errors.Wrap(err, "send email failed")
+	}
+	return nil
+}
+
+// SendRaw send email that supports attachments.
+func (c *EmailClient) SendRaw(ctx context.Context, sender string, mailList []*string, title string, body string, attachments []string) error {
+	if err := check(sender, mailList); err != nil {
+		return err
+	}
+	msg := gomail.NewMessage(gomail.SetCharset("UTF-8"))
+	msg.SetHeader("From", sender)
+	toList := make([]string, len(mailList))
+	for i, l := range mailList {
+		toList[i] = *l
+	}
+	msg.SetHeader("To", toList...)
+	msg.SetHeader("Subject", title)
+	msg.SetBody("text/html", body)
+	for _, a := range attachments {
+		msg.Attach(a)
+	}
+	var emailRaw bytes.Buffer
+	_, _ = msg.WriteTo(&emailRaw)
+	if _, err := c.ses.SendRawEmail(&ses.SendRawEmailInput{
+		RawMessage: &ses.RawMessage{Data: emailRaw.Bytes()},
+	}); err != nil {
+		return errors.Wrap(err, "send raw email failed")
+	}
+	return nil
+}
+
+func check(sender string, mailList []*string) error {
+	if sender == "" {
+		return errors.New("no sender")
+	}
+	if len(mailList) == 0 {
+		return errors.New("no recipient")
+	}
+	return nil
+}