added fix-comment subcommand

move the spotify url from comments to own tag (spotify)

internal/fixComment.go

@@ -0,0 +1,103 @@
+package ripsort
+
+import (
+	"io/fs"
+	"log/slog"
+	"os"
+	"path/filepath"
+	"regexp"
+
+	"git.kapelle.org/niklas/ripsort/internal/metadata"
+)
+
+func FixComment(path string, dry bool) {
+
+	info, err := os.Stat(path)
+	if err != nil {
+		slog.Error("Failed to stat path", "file", path, "err", err)
+		os.Exit(1)
+	}
+
+	// Handle single file
+	if !info.IsDir() {
+		if !fileSupported(path) {
+			slog.Error("Unsupported file format", "file", path)
+			os.Exit(1)
+		}
+
+		err = fixCommentForFile(path, dry)
+		if err != nil {
+			slog.Error("Failed to fix comment on file", "file", path, "err", err)
+			os.Exit(1)
+		}
+
+		return
+	}
+
+	// Handle directory
+	err = filepath.WalkDir(path, func(p string, d fs.DirEntry, err error) error {
+		if err != nil {
+			slog.Error("Failed to walk path", "path", path, "file", p, "err", err)
+			return err
+		}
+
+		if !d.IsDir() {
+			if !fileSupported(p) {
+				return nil
+			}
+			err = fixCommentForFile(p, dry)
+			if err != nil {
+				slog.Error("Failed to fix comment on file", "file", path, "err", err)
+				os.Exit(1)
+			}
+
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		os.Exit(1)
+	}
+}
+
+func fixCommentForFile(file string, dry bool) error {
+
+	info, err := metadata.ReadAudioTags(file)
+	if err != nil {
+		return err
+	}
+
+	var re = regexp.MustCompile(`(?m)(https:\/\/open\.spotify\.com\/track\/)(.*)`)
+
+	if info.Comment == nil {
+		slog.Debug("Song does not contain comment", "file", file)
+		return nil
+	}
+
+	matches := re.FindAllStringSubmatch(*info.Comment, -1)
+
+	if len(matches) != 1 {
+		slog.Debug("Song does not match regex", "file", file, "comment", info.Comment)
+		return nil
+	}
+
+	id := matches[0][2]
+
+	slog.Debug("Spotify tag found", "file", file, "id", id)
+
+	if dry {
+		slog.Info("Dryrun: Don't wite id", "file", file, "id", id)
+		return nil
+	}
+
+	info.SpotifyID = &id
+	info.Comment = nil
+
+	err = metadata.UpdateMetadata(file, file, *info)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}