feat(lyrics): detect Lyricsfile YAML in content-sniffing

model/lyrics_embedded.go

@@ -31,6 +31,10 @@ func ParseEmbedded(language, text string) (LyricList, error) {
 		log.Warn("Error parsing embedded SRT lyrics, falling back to plain lyrics", "error", err)
 	}
 
+	if lyricsList, err := ParseLyricsfile(text); err == nil && len(lyricsList) > 0 {
+		return lyricsList, nil
+	}
+
 	lyric, err := ToLyrics(language, text)
 	if err != nil {
 		return nil, err

model/lyrics_embedded_test.go

@@ -157,4 +157,16 @@ Another subtitle line`
 		}
 		Expect(strings.Join(values, "\n")).To(ContainSubstring("Broken"))
 	})
+
+	It("detects a Lyricsfile YAML payload via content-sniffing", func() {
+		yaml := "version: \"1.0\"\nmetadata:\n  title: Song\n  language: eng\nlines:\n  - text: sniffed yaml line\n    start_ms: 1000\n"
+
+		list, err := ParseEmbedded("eng", yaml)
+
+		Expect(err).ToNot(HaveOccurred())
+		Expect(list).To(HaveLen(1))
+		Expect(list[0].Synced).To(BeTrue())
+		Expect(list[0].Line).To(HaveLen(1))
+		Expect(list[0].Line[0].Value).To(Equal("sniffed yaml line"))
+	})
 })