Set metadata and fix dl path

main.go

@@ -57,7 +57,7 @@ func do(client *youtubedl.Client) error {
 			log.Printf("already exists: %s", target)
 			continue
 		}
-		if err := client.Download(result.Link, path.Join(config.Root, target)); err != nil {
+		if err := client.Download(result.Link, target); err != nil {
 			errs += ", " + err.Error()
 		}
 	}

youtubedl/client.go

@@ -15,15 +15,41 @@ func New() (*Client, error) {
 }
 
 func (c *Client) Download(video, local string) error {
-	cmd := exec.Command("youtube-dl", "-f", "22", "-o", local, "--write-sub", "--write-auto-sub", "--sub-format", "srt", video)
-	log.Println(cmd.Path, cmd.Args)
-	out, err := cmd.CombinedOutput()
-	if err != nil {
-		err = fmt.Errorf("%v: %s", err, out)
+	errs := []error{}
+	for _, extras := range [][]string{
+		[]string{"--metadata-from-title", ".*[0-9]/[0-9][0-9] (?P<title>.+)"},
+		[]string{},
+	} {
+		args := append([]string{
+			"youtube-dl",
+			"-f",
+			"22",
+			"-o",
+			local,
+			"--write-sub",
+			"--write-auto-sub",
+			"--sub-format",
+			"srt",
+		}, extras...)
+		args = append(args, video)
+		cmd := exec.Command(args[0], args[1:]...)
+		log.Println(cmd.Path, cmd.Args)
+		out, err := cmd.CombinedOutput()
+		if err != nil {
+			log.Printf("failed with %v: %s", err, out)
+			errs = append(errs, fmt.Errorf("%v: %s", err, out))
+		} else {
+			log.Printf("passed with %s", out)
+			errs = nil
+			break
+		}
+	}
+	if len(errs) > 0 {
+		err := fmt.Errorf("%v", errs)
 		return err
 	}
-	cmd = exec.Command("python3", "-m", "vtt_to_srt", path.Dir(local))
-	out, err = cmd.CombinedOutput()
+	cmd := exec.Command("python3", "-m", "vtt_to_srt", path.Dir(local))
+	out, err := cmd.CombinedOutput()
 	if err != nil {
 		err = fmt.Errorf("%v: %s", err, out)
 		return err