get info about genere from musicbrainz in info

internal/metadata/metadata.go

@@ -6,8 +6,11 @@ import (
 	"os"
 	"path/filepath"
 	"regexp"
+	"slices"
+	"sort"
 	"strings"
 
+	"git.kapelle.org/niklas/ripsort/internal/clients/musicbrainz"
 	"github.com/dhowden/tag"
 )
 
@@ -21,6 +24,7 @@ type Metadata struct {
 	Comment     *string
 	ISRC        *string
 	Date        *string
+	Genre       []string
 	SpotifyID   *string
 }
 
@@ -61,6 +65,7 @@ func readGenericAudioTags(filePath string) (*Metadata, error) {
 		Track:       track,
 		TotalTracks: totalTracks,
 		Comment:     &comment,
+		Genre:       []string{m.Genre()},
 	}
 
 	commentToSpotifyid(info)
@@ -110,3 +115,39 @@ func commentToSpotifyid(m *Metadata) {
 
 	m.SpotifyID = &id
 }
+
+func SearchForGenre(mbc *musicbrainz.MusicBrainzClient, m *Metadata) ([]string, error) {
+	if m.ISRC == nil {
+		return []string{}, nil
+	}
+
+	res, err := mbc.SearchByISRC(*m.ISRC, musicbrainz.SearchOptions{})
+	if err != nil {
+		return []string{}, err
+	}
+
+	if len(res.Recordings) == 0 {
+		return []string{}, nil
+	}
+
+	allTags := []musicbrainz.Tag{}
+
+	for _, rec := range res.Recordings {
+		allTags = append(allTags, rec.Tags...)
+	}
+
+	sort.Slice(allTags[:], func(i int, j int) bool {
+		return allTags[i].Count > allTags[j].Count
+	})
+
+	allTags = slices.CompactFunc(allTags, func(lhs, rhs musicbrainz.Tag) bool {
+		return lhs.Name == rhs.Name
+	})
+
+	finalTags := []string{}
+	for _, tag := range allTags {
+		finalTags = append(finalTags, tag.Name)
+	}
+
+	return finalTags, nil
+}