first commit

2026-04-09 01:42:37 +02:00
commit 75ae131e2a
7 changed files with 1055 additions and 0 deletions
--- a/embed.go
+++ b/embed.go
@@ -0,0 +1,195 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+)
+
+// ToolAvailability tracks optional embedding tools found on PATH.
+type ToolAvailability struct {
+	Metaflac      bool
+	ID3v2         bool
+	AtomicParsley bool
+}
+
+func detectEmbeddingTools() ToolAvailability {
+	tools := ToolAvailability{}
+
+	if _, err := exec.LookPath("metaflac"); err == nil {
+		tools.Metaflac = true
+	}
+
+	if _, err := exec.LookPath("id3v2"); err == nil {
+		tools.ID3v2 = true
+	}
+
+	if _, err := exec.LookPath("AtomicParsley"); err == nil {
+		tools.AtomicParsley = true
+	}
+
+	return tools
+}
+
+func warnMissingEmbeddingTools(tools ToolAvailability) {
+	if !tools.Metaflac {
+		fmt.Println("Warning: metaflac not found. Embedding will be skipped for FLAC files.")
+	}
+
+	if !tools.ID3v2 {
+		fmt.Println("Warning: id3v2 not found. Embedding will be skipped for MP3 files.")
+	}
+
+	if !tools.AtomicParsley {
+		fmt.Println("Warning: AtomicParsley not found. Embedding will be skipped for M4A files.")
+	}
+}
+
+func hasEmbeddedLyrics(file string, tools ToolAvailability) (bool, error) {
+	fileExt := strings.ToLower(filepath.Ext(file))
+
+	switch fileExt {
+	case ".flac":
+		if !tools.Metaflac {
+			return false, nil
+		}
+
+		cmd := exec.Command("metaflac", "--export-tags-to=-", file)
+		output, err := cmd.Output()
+		if err != nil {
+			return false, err
+		}
+
+		tagDump := strings.ToUpper(string(output))
+		for _, line := range strings.Split(tagDump, "\n") {
+			if strings.HasPrefix(line, "LYRICS=") || strings.HasPrefix(line, "UNSYNCEDLYRICS=") {
+				return true, nil
+			}
+		}
+
+		return false, nil
+
+	case ".mp3":
+		if !tools.ID3v2 {
+			return false, nil
+		}
+
+		cmd := exec.Command("id3v2", "--list", file)
+		output, err := cmd.Output()
+		if err != nil {
+			return false, err
+		}
+
+		return strings.Contains(string(output), "USLT"), nil
+
+	case ".m4a":
+		if !tools.AtomicParsley {
+			return false, nil
+		}
+
+		cmd := exec.Command("AtomicParsley", file, "-t")
+		output, err := cmd.Output()
+		if err != nil {
+			return false, err
+		}
+
+		return strings.Contains(string(output), "\u00a9lyr"), nil
+
+	default:
+		return false, fmt.Errorf("checking for embedded lyrics not supported for %s files", fileExt)
+	}
+}
+
+func embedLyrics(file, lyrics, fileExt string, tools ToolAvailability) error {
+	switch strings.ToLower(fileExt) {
+	case ".flac":
+		if !tools.Metaflac {
+			return fmt.Errorf("metaflac command not found")
+		}
+
+		tmpFile, err := os.CreateTemp("", "lyrics-*.txt")
+		if err != nil {
+			return fmt.Errorf("failed to create temp file: %v", err)
+		}
+		defer os.Remove(tmpFile.Name())
+
+		if _, err := tmpFile.WriteString(lyrics); err != nil {
+			return fmt.Errorf("failed to write lyrics to temp file: %v", err)
+		}
+
+		if err := tmpFile.Close(); err != nil {
+			return fmt.Errorf("failed to close temp file: %v", err)
+		}
+
+		removeCmd := exec.Command("metaflac", "--remove-tag=LYRICS", "--remove-tag=UNSYNCEDLYRICS", file)
+		if err := removeCmd.Run(); err != nil {
+			return fmt.Errorf("failed to remove existing lyrics: %v", err)
+		}
+
+		addCmd := exec.Command(
+			"metaflac",
+			"--set-tag-from-file=LYRICS="+tmpFile.Name(),
+			"--set-tag-from-file=UNSYNCEDLYRICS="+tmpFile.Name(),
+			file,
+		)
+
+		return addCmd.Run()
+
+	case ".mp3":
+		if !tools.ID3v2 {
+			return fmt.Errorf("id3v2 command not found")
+		}
+
+		tmpFile, err := os.CreateTemp("", "lyrics-*.txt")
+		if err != nil {
+			return fmt.Errorf("failed to create temp file: %v", err)
+		}
+		defer os.Remove(tmpFile.Name())
+
+		if _, err := tmpFile.WriteString(lyrics); err != nil {
+			return fmt.Errorf("failed to write lyrics to temp file: %v", err)
+		}
+
+		if err := tmpFile.Close(); err != nil {
+			return fmt.Errorf("failed to close temp file: %v", err)
+		}
+
+		cmd := exec.Command("id3v2", "--USLT", tmpFile.Name(), file)
+		if err := cmd.Run(); err != nil {
+			return fmt.Errorf("failed to embed lyrics with id3v2: %v", err)
+		}
+
+		return nil
+
+	case ".m4a":
+		if !tools.AtomicParsley {
+			return fmt.Errorf("AtomicParsley command not found")
+		}
+
+		tmpFile, err := os.CreateTemp("", "lyrics-*.txt")
+		if err != nil {
+			return fmt.Errorf("failed to create temp file: %v", err)
+		}
+		defer os.Remove(tmpFile.Name())
+
+		if _, err := tmpFile.WriteString(lyrics); err != nil {
+			return fmt.Errorf("failed to write lyrics to temp file: %v", err)
+		}
+
+		if err := tmpFile.Close(); err != nil {
+			return fmt.Errorf("failed to close temp file: %v", err)
+		}
+
+		cmd := exec.Command("AtomicParsley", file, "--lyrics", tmpFile.Name(), "--overWrite")
+		if err := cmd.Run(); err != nil {
+			return fmt.Errorf("failed to embed lyrics with AtomicParsley: %v", err)
+		}
+
+		return nil
+
+	default:
+		return fmt.Errorf("embedding not supported for %s files", fileExt)
+	}
+}