// TopRepositories returns the most mentioned repositories by language.
func (s *Store) TopRepositories() (m map[string]*Repository, err error) {
m = make(map[string]*Repository)
err = s.db.View(func(tx *bolt.Tx) error {
c := tx.Bucket([]byte("repositories")).Cursor()
for k, v := c.First(); k != nil; k, v = c.Next() {
// Decode repository.
var r internal.Repository
if err := proto.Unmarshal(v, &r); err != nil {
return err
}
// Retrieve repository language.
lang := r.GetLanguage()
// Ignore marked repositories or repositories that have a lower message count.
if r.GetNotified() {
continue
} else if m[lang] != nil && len(r.GetMessages()) <= len(m[lang].Messages) {
continue
}
// Override repo.
m[lang] = decodeRepository(&r)
}
return nil
})
return
}
// decodeRepository decodes pb into an application type.
func decodeRepository(pb *internal.Repository) *Repository {
r := &Repository{
ID: pb.GetID(),
Description: pb.GetDescription(),
Language: pb.GetLanguage(),
Notified: pb.GetNotified(),
Messages: make([]*Message, len(pb.Messages)),
}
for i, m := range pb.GetMessages() {
r.Messages[i] = decodeMessage(m)
}
return r
}