Tracks meta

2 files changed, 76 insertions, 0 deletions

diff --git a/Audio/List.go b/Audio/List.go
new file mode 100644
index 0000000..46bdfff
--- /dev/null
+++ b/Audio/List.go
@@ -0,0 +1,31 @@
+package audio
+
+import (
+	"log"
+	"os"
+
+	settings "physick.ru/culture_exam/Settings"
+)
+
+type TracksList struct {
+	Tracks []TrackMeta
+}
+
+func GenerateTrackList(verbouse bool) (TracksList, error) {
+	var files, dirErr = os.ReadDir(settings.Current.SongsLocation)
+	if dirErr != nil {
+		return TracksList{}, dirErr
+	}
+	var outp = TracksList {
+		Tracks: make([]TrackMeta, 0, len(files)),
+	}
+	for _, v := range files {
+		var meta, err = GenerateMetadata(v.Name())
+		if err != nil {
+			log.Printf("Failed to parse the file info: %s", err.Error())
+			continue
+		}
+		outp.Tracks = append(outp.Tracks, meta)
+	}
+	return outp, nil
+}
diff --git a/Audio/Meta.go b/Audio/Meta.go
index 9e288f3..6b8343c 100644
--- a/Audio/Meta.go
+++ b/Audio/Meta.go
@@ -1,13 +1,44 @@
 package audio
 
 import (
+	"fmt"
 	"io"
 	"os"
 	"time"
 
+	"github.com/dhowden/tag"
 	"github.com/tcolgate/mp3"
+	settings "physick.ru/culture_exam/Settings"
 )
 
+type TrackMeta struct {
+	Name string
+	Author string
+	Album string
+	Location string
+	Duration time.Duration
+}
+
+func GenerateMetadata(fileName string) (TrackMeta, error) {
+	var fullPath = fmt.Sprintf("%s/%s", settings.Current.SongsLocation, fileName)
+	var duration, error = GetSongDuration(fullPath)
+	// If file doesn't exist that will be caught there
+	if error != nil {
+		return TrackMeta{}, error
+	}
+	var Artist, Title, Album, metaErr = GetInfo(fullPath)
+	if metaErr != nil {
+		return TrackMeta{}, metaErr
+	}
+	return TrackMeta {
+		Name: Title,
+		Author: Artist,
+		Album: Album,
+		Location: fullPath,
+		Duration: duration,
+	}, nil
+}
+
 func GetSongDuration(path string) (time.Duration, error) {
 	var file, fopenErr = os.Open(path)
 	if fopenErr != nil {
@@ -33,3 +64,17 @@ func GetSongDuration(path string) (time.Duration, error) {
 	}
 	return duration, nil
 }
+
+// Author - name - album
+func GetInfo (filePath string) (string, string, string, error) {
+	f, err := os.Open(filePath)
+	if err != nil {
+		return "", "", "", err
+	}
+	defer f.Close()
+	m, err := tag.ReadFrom(f)
+	if err != nil {
+		return "", "", "", err
+	}
+	return m.Artist(), m.Title(), m.Album(), nil
+}