gotosocial/internal/timeline/preparedposts.go
2021-06-04 14:39:56 +02:00

50 lines
1.1 KiB
Go

package timeline
import (
"container/list"
"errors"
"time"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
)
type preparedPosts struct {
data *list.List
}
type preparedPostsEntry struct {
createdAt time.Time
statusID string
prepared *apimodel.Status
}
func (p *preparedPosts) insertPrepared(i *preparedPostsEntry) error {
if p.data == nil {
p.data = &list.List{}
}
// if we have no entries yet, this is both the newest and oldest entry, so just put it in the front
if p.data.Len() == 0 {
p.data.PushFront(i)
return nil
}
// we need to iterate through the index to make sure we put this post in the appropriate place according to when it was created
for e := p.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*preparedPostsEntry)
if !ok {
return errors.New("index: could not parse e as a preparedPostsEntry")
}
// if the post to index is newer than e, insert it before e in the list
if i.createdAt.After(entry.createdAt) {
p.data.InsertBefore(i, e)
return nil
}
}
// if we reach this point it's the oldest post we've seen so put it at the back
p.data.PushBack(i)
return nil
}