listmonk/messenger/messenger.go

35 lines
1009 B
Go

package messenger
import "net/textproto"
// Messenger is an interface for a generic messaging backend,
// for instance, e-mail, SMS etc.
type Messenger interface {
Name() string
Push(fromAddr string, toAddr []string, subject string, message []byte, atts []*Attachment) error
Flush() error
}
// Attachment represents a file or blob attachment that can be
// sent along with a message by a Messenger.
type Attachment struct {
Name string
Header textproto.MIMEHeader
Content []byte
}
// MakeAttachmentHeader is a helper function that returns a
// textproto.MIMEHeader tailored for attachments, primarily
// email. If no encoding is given, base64 is assumed.
func MakeAttachmentHeader(filename, encoding string) textproto.MIMEHeader {
if encoding == "" {
encoding = "base64"
}
h := textproto.MIMEHeader{}
h.Set("Content-Disposition", "attachment; filename="+filename)
h.Set("Content-Type", "application/json; name=\""+filename+"\"")
h.Set("Content-Transfer-Encoding", encoding)
return h
}