refactor: project structure

pkg/email/message.go

@@ -0,0 +1,26 @@
+package email
+
+import (
+	"fmt"
+	"io"
+)
+
+type EmailMessage struct {
+	To          string
+	Subject     string
+	Body        string
+	Attachments []EmailAttachment
+}
+
+type EmailAttachment struct {
+	File  io.Reader
+	Title string
+}
+
+func (e EmailAttachment) ReadContent() ([]byte, error) {
+	bts, err := io.ReadAll(e.File)
+	if err != nil {
+		return nil, fmt.Errorf("error loading attachment: %s", err)
+	}
+	return bts, nil
+}