/
inbox.go
80 lines (65 loc) · 1.69 KB
/
inbox.go
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package email
import (
"fmt"
"io"
"strings"
"github.com/emersion/go-imap"
"github.com/emersion/go-message/mail"
)
func handleMessages(section imap.BodySectionName, messages chan *imap.Message) ([]Message, error) {
result := make([]Message, 0)
for {
msg, ok := <-messages
if !ok {
break
}
extractedMessage, err := extractMessage(§ion, msg)
if err != nil {
return nil, fmt.Errorf("parsing message: %w", err)
}
result = append(result, Message{
From: extractedMessage.From,
To: extractedMessage.To,
Subject: extractedMessage.Subject,
Body: extractedMessage.Body,
})
}
return result, nil
}
func extractMessage(section *imap.BodySectionName, rawMessage *imap.Message) (Message, error) {
resultMessage := Message{}
r := rawMessage.GetBody(section)
if r == nil {
fmt.Println("Server didn't returned message body")
resultMessage.Body = strings.NewReader("<!-- no content -->")
}
mailReader, err := mail.CreateReader(r)
if err != nil {
return Message{}, fmt.Errorf("creating mail reader: %w", err)
}
header := mailReader.Header
if from, err := header.AddressList("From"); err == nil {
resultMessage.From = from[0].Address
}
if to, err := header.AddressList("To"); err == nil {
resultMessage.To = to[0].Address
}
if subject, err := header.Subject(); err == nil {
resultMessage.Subject = subject
}
for {
p, err := mailReader.NextPart()
if err == io.EOF {
break
} else if err != nil {
return Message{}, fmt.Errorf("reading mail part: %w", err)
}
switch p.Header.(type) {
case *mail.InlineHeader:
resultMessage.Body = p.Body
case *mail.AttachmentHeader:
fmt.Println("Attachment found")
}
}
return resultMessage, nil
}