56 lines
1.3 KiB
Go
56 lines
1.3 KiB
Go
package messenger
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import (
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"net/textproto"
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"github.com/knadh/listmonk/models"
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)
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// Messenger is an interface for a generic messaging backend,
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// for instance, e-mail, SMS etc.
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type Messenger interface {
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Name() string
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Push(Message) error
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Flush() error
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Close() error
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}
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// Message is the message pushed to a Messenger.
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type Message struct {
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From string
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To []string
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Subject string
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ContentType string
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Body []byte
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AltBody []byte
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Headers textproto.MIMEHeader
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Attachments []Attachment
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Subscriber models.Subscriber
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// Campaign is generally the same instance for a large number of subscribers.
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Campaign *models.Campaign
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}
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// Attachment represents a file or blob attachment that can be
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// sent along with a message by a Messenger.
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type Attachment struct {
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Name string
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Header textproto.MIMEHeader
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Content []byte
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}
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// MakeAttachmentHeader is a helper function that returns a
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// textproto.MIMEHeader tailored for attachments, primarily
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// email. If no encoding is given, base64 is assumed.
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func MakeAttachmentHeader(filename, encoding string) textproto.MIMEHeader {
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if encoding == "" {
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encoding = "base64"
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}
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h := textproto.MIMEHeader{}
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h.Set("Content-Disposition", "attachment; filename="+filename)
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h.Set("Content-Type", "application/json; name=\""+filename+"\"")
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h.Set("Content-Transfer-Encoding", encoding)
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return h
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}
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