Add GetGenre endpoint

persistence/genre_repository.go

@@ -0,0 +1,59 @@
+package persistence
+
+import (
+	"strconv"
+
+	"github.com/astaxie/beego/orm"
+	"github.com/cloudsonic/sonic-server/model"
+)
+
+type genreRepository struct{}
+
+func NewGenreRepository() model.GenreRepository {
+	return &genreRepository{}
+}
+
+func (r genreRepository) GetAll() (model.Genres, error) {
+	o := Db()
+	genres := make(map[string]model.Genre)
+
+	// Collect SongCount
+	var res []orm.Params
+	_, err := o.Raw("select genre, count(*) as c from media_file group by genre").Values(&res)
+	if err != nil {
+		return nil, err
+	}
+	for _, r := range res {
+		name := r["genre"].(string)
+		count := r["c"].(string)
+		g, ok := genres[name]
+		if !ok {
+			g = model.Genre{Name: name}
+		}
+		g.SongCount, _ = strconv.Atoi(count)
+		genres[name] = g
+	}
+
+	// Collect AlbumCount
+	_, err = o.Raw("select genre, count(*) as c from album group by genre").Values(&res)
+	if err != nil {
+		return nil, err
+	}
+	for _, r := range res {
+		name := r["genre"].(string)
+		count := r["c"].(string)
+		g, ok := genres[name]
+		if !ok {
+			g = model.Genre{Name: name}
+		}
+		g.AlbumCount, _ = strconv.Atoi(count)
+		genres[name] = g
+	}
+
+	// Build response
+	result := model.Genres{}
+	for _, g := range genres {
+		result = append(result, g)
+	}
+	return result, err
+}