Refactoring to a cleaner architecture

persistence/index_repository.go

@@ -0,0 +1,50 @@
+package persistence
+
+import (
+	"github.com/deluan/gosonic/domain"
+	"errors"
+	"sort"
+	"github.com/deluan/gosonic/utils"
+)
+
+type artistIndex struct {
+	BaseRepository
+}
+
+func NewArtistIndexRepository() domain.ArtistIndexRepository {
+	r := &artistIndex{}
+	r.init("index", &domain.ArtistIndex{})
+	return r
+}
+
+func (r *artistIndex) Put(m *domain.ArtistIndex) error {
+	if m.Id == "" {
+		return errors.New("Id is not set")
+	}
+	sort.Sort(byArtistName(m.Artists))
+	return r.saveOrUpdate(m.Id, m)
+}
+
+func (r *artistIndex) Get(id string) (*domain.ArtistIndex, error) {
+	var rec interface{}
+	rec, err := r.readEntity(id)
+	return rec.(*domain.ArtistIndex), err
+}
+
+func (r *artistIndex) GetAll() ([]domain.ArtistIndex, error) {
+	var indices = make([]domain.ArtistIndex, 0)
+	err := r.loadAll(&indices, "")
+	return indices, err
+}
+
+type byArtistName []domain.ArtistInfo
+
+func (a byArtistName) Len() int {
+	return len(a)
+}
+func (a byArtistName) Swap(i, j int) {
+	a[i], a[j] = a[j], a[i]
+}
+func (a byArtistName) Less(i, j int) bool {
+	return utils.NoArticle(a[i].Artist) < utils.NoArticle(a[j].Artist)
+}