refactor: use track terminology instead of song

internal/deezer/single.go

@@ -0,0 +1,65 @@
+package deezer
+
+import (
+	"encoding/json"
+	"fmt"
+	"path"
+	"strconv"
+	"time"
+)
+
+type Single struct {
+	Results struct {
+		Data *Track `json:"DATA"`
+	} `json:"results"`
+}
+
+func (s *Single) String() string {
+	if s.Results.Data == nil {
+		return "Track: No data available"
+	}
+
+	duration, err := strconv.Atoi(s.Results.Data.Duration)
+	if err != nil {
+		duration = 0
+	}
+
+	return fmt.Sprintf(
+		`================= [ Track Info ] =================
+Title:    %s
+Artist:   %s
+Duration: %s
+==================================================`,
+		s.Results.Data.GetTitle(),
+		s.Results.Data.Artist,
+		time.Duration(duration)*time.Second,
+	)
+}
+
+func (s *Single) GetType() string {
+	return "Track"
+}
+
+func (s *Single) GetTitle() string {
+	if s.Results.Data == nil {
+		return ""
+	}
+	return s.Results.Data.GetTitle()
+}
+
+func (s *Single) GetTracks() []*Track {
+	if s.Results.Data == nil {
+		return nil
+	}
+	return []*Track{s.Results.Data}
+}
+
+func (s *Single) SetTracks(tracks []*Track) {}
+
+func (s *Single) GetOutputDir(outputDir string) string {
+	return path.Join(outputDir, "Singles")
+}
+
+func (s *Single) Unmarshal(data []byte) error {
+	return json.Unmarshal(data, s)
+}