1 files changed, 143 insertions, 0 deletions
diff --git a/files/operations.go b/files/operations.go
new file mode 100644
index 0000000..3da6586
--- /dev/null
+++ b/files/operations.go
@@ -0,0 +1,143 @@
+package files
+
+import (
+	"context"
+	"crypto/sha256"
+	"fmt"
+	"io"
+	"io/fs"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"regexp"
+	"strings"
+	"time"
+
+	"github.com/briandowns/spinner"
+	"golang.org/x/sync/errgroup"
+)
+
+func (file *FileInfo) reencodeFile(ctx context.Context) error {
+	/* cmd := exec.Command("flac", "-8", "-f", file.AbsPath)
+	if err := cmd.Run(); err != nil {
+		log.Printf("%s\n", err.Error())
+		return err
+	}
+	file.Encoder = ctx.Value("encoder").(string) */
+	fmt.Println(file)
+	return nil
+}
+
+func getEncoderVer(path string) (string, error) {
+	out, err := exec.Command("metaflac", "--show-vendor-tag", path).Output()
+	if err != nil {
+		return "", err
+	}
+
+	r := regexp.MustCompile("libFLAC \\d\\.\\d\\.\\d")
+	encoder := r.FindString(string(out))
+	switch encoder {
+	case "":
+		return "", nil
+	default:
+		return strings.Split(encoder, " ")[1], nil
+	}
+}
+
+func getInfoFromFile(path string, info fs.DirEntry) (*FileInfo, error) {
+	var filedata FileInfo
+
+	filedata.Process = true
+
+	tmp, err := info.Info()
+	if err != nil {
+		return nil, err
+	}
+
+	filedata.Modtime = tmp.ModTime()
+
+	abspath, err := filepath.Abs(path)
+	if err != nil {
+		return nil, err
+	}
+
+	filedata.AbsPath = abspath
+
+	encoder, err := getEncoderVer(path)
+	if err != nil {
+		return nil, err
+	}
+
+	filedata.Encoder = encoder
+
+	return &filedata, nil
+}
+
+func getSha256(path string) ([]byte, error) {
+	file, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	hash := sha256.New()
+	if _, err := io.Copy(hash, file); err != nil {
+		return nil, err
+	}
+	return hash.Sum(nil), nil
+}
+
+func IndexFlacs(ctx context.Context) error {
+	spin := spinner.New(spinner.CharSets[9], 100*time.Millisecond)
+	spin.Suffix = " Indexing flacs..."
+
+	spin.Start()
+
+	wg := new(errgroup.Group)
+	wg.SetLimit(100)
+
+	if err := filepath.WalkDir(ctx.Value("path").(string), func(path string, info fs.DirEntry, err error) error {
+		select {
+		case <-ctx.Done():
+			spin.FinalMSG = "Stopping...\n"
+			spin.Stop()
+			return filepath.SkipAll
+		default:
+			if err != nil {
+				return err
+			}
+			if !info.IsDir() {
+				if filepath.Ext(path) == ".flac" {
+					wg.Go(func() error {
+						select {
+						case <-ctx.Done():
+							return nil
+						default:
+							data, err := getInfoFromFile(path, info)
+							if err != nil {
+								return err
+							}
+
+							hashsum, err := getSha256(path)
+							if err != nil {
+								return err
+							}
+
+							return data.IndexFile(ctx, hashsum)
+						}
+					})
+				}
+
+			}
+			return nil
+		}
+
+	}); err != nil {
+		return err
+	}
+
+	wg.Wait()
+	spin.FinalMSG = "Done indexing flacs\n"
+	spin.Stop()
+	return nil
+}