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package feed
import (
"bytes"
"io"
"time"
"github.com/emersion/go-message/mail"
"github.com/Necoro/feed2imap-go/internal/config"
)
func address(name, address string) []*mail.Address {
return []*mail.Address{{name, address}}
}
func fromAdress(feed Feed, item feeditem, cfg config.Config) []*mail.Address {
switch {
case item.Item.Author != nil && item.Item.Author.Email != "":
return address(item.Item.Author.Name, item.Item.Author.Email)
case item.Item.Author != nil && item.Item.Author.Name != "":
return address(item.Item.Author.Name, cfg.DefaultEmail)
case item.Feed.Author != nil && item.Feed.Author.Email != "":
return address(item.Feed.Author.Name, item.Feed.Author.Email)
case item.Feed.Author != nil && item.Feed.Author.Name != "":
return address(item.Feed.Author.Name, cfg.DefaultEmail)
default:
return address(feed.Name, cfg.DefaultEmail)
}
}
func asMail(feed Feed, item feeditem, cfg config.Config) (string, error) {
var b bytes.Buffer
var h mail.Header
h.SetAddressList("From", fromAdress(feed, item, cfg))
h.SetAddressList("To", address(feed.Name, cfg.DefaultEmail))
{ // date
date := item.Item.PublishedParsed
if date == nil {
now := time.Now()
date = &now
}
h.SetDate(*date)
}
{ // subject
subject := item.Item.Title
if subject == "" {
subject = item.Item.Published
}
if subject == "" {
subject = item.Item.Link
}
h.SetSubject(subject)
}
mw, err := mail.CreateWriter(&b, h)
if err != nil {
return "", err
}
if cfg.WithPartText() {
tw, err := mw.CreateInline()
if err != nil {
return "", err
}
var th mail.InlineHeader
th.SetContentType("text/plain", map[string]string{"charset": "utf-8", "format": "flowed"})
w, err := tw.CreatePart(th)
if err != nil {
return "", err
}
_, _ = io.WriteString(w, "Who are you?")
_ = w.Close()
_ = tw.Close()
}
_ = mw.Close()
return b.String(), nil
}
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