//printThreadHead renders head part of thread page with cookie.
func (t *threadCGI) printThreadHead(path, id string, page int, ca *thread.Cache, rss string) error {
switch {
case ca.HasRecord():
if !t.IsBot() {
download.GetCache(true, ca)
} else {
log.Println("bot detected, not get cache")
}
case t.CheckGetCache():
ca.Subscribe()
if t.Req.FormValue("search_new_file") == "" {
download.GetCache(true, ca)
}
default:
t.Print404(nil, id)
return errors.New("no records")
}
var access string
var newcookie []*http.Cookie
if ca.HasRecord() && id == "" && page == 0 {
cookie, err := t.Req.Cookie("access")
if err == nil {
access = cookie.Value
} else {
log.Println(err)
}
newcookie = t.setCookie(ca, access)
}
t.Header(path, rss, newcookie, false)
return nil
}
//bg waits for at least one record in the cache.
func bg(c *thread.Cache, wg *sync.WaitGroup) {
w := 2 * time.Second
newest, err := recentlist.Newest(c.Datfile)
var done chan struct{}
go func() {
wg.Wait()
done <- struct{}{}
}()
if err == nil && (newest.Stamp == c.Stamp()) {
return
}
for {
select {
case <-done:
return
case <-time.After(w):
w += time.Second
if c.HasRecord() || w >= 5*time.Second {
return
}
}
}
}
//setFromCache adds cache.datfile/timestamp pair if not exists.
func setFromCache(tx *bolt.Tx, ca *thread.Cache) {
_, err := getTime(tx, ca.Datfile)
if err == nil {
return
}
var firstStamp int64
rec := ca.LoadRecords(record.Alive)
switch {
case !ca.HasRecord():
firstStamp = ca.RecentStamp()
case len(rec) > 0:
firstStamp = rec[rec.Keys()[0]].Stamp
default:
firstStamp = time.Now().Add(-24 * time.Hour).Unix()
}
for {
_, err = getThread(tx, firstStamp)
if err != nil {
break
}
firstStamp++
}
setEntry(tx, firstStamp, ca.Datfile)
}
//printThreadTop renders toppart of thread page.
func (t *threadCGI) printThreadTop(path, id string, nPage int, ca *thread.Cache) {
var lastrec *record.Record
var resAnchor string
recs := ca.LoadRecords(record.Alive)
ids := recs.Keys()
if ca.HasRecord() && nPage == 0 && id == "" && len(ids) > 0 {
lastrec = recs[ids[len(ids)-1]]
resAnchor = t.ResAnchor(lastrec.ID[:8], cfg.ThreadURL, t.Path(), false)
}
s := struct {
Path string
Cache *thread.Cache
Lastrec *record.Record
ResAnchor template.HTML
cgi.Defaults
}{
path,
ca,
lastrec,
template.HTML(resAnchor),
*t.Defaults(),
}
cgi.RenderTemplate("thread_top", s, t.WR)
}
