Remove duplicated helper functions, move them to `utils` package

engine/cover.go

@@ -10,9 +10,7 @@ import (
 	"image/jpeg"
 	_ "image/png"
 	"io"
-	"mime"
 	"os"
-	"path/filepath"
 	"strings"
 	"time"
 
@@ -21,6 +19,7 @@ import (
 	"github.com/deluan/navidrome/log"
 	"github.com/deluan/navidrome/model"
 	"github.com/deluan/navidrome/resources"
+	"github.com/deluan/navidrome/utils"
 	"github.com/dhowden/tag"
 	"github.com/disintegration/imaging"
 	"github.com/djherbis/fscache"
@@ -141,7 +140,7 @@ func (c *cover) getCover(ctx context.Context, path string, size int) (reader io.
 	}
 
 	var data []byte
-	if isAudioFile(filepath.Ext(path)) {
+	if utils.IsAudioFile(path) {
 		data, err = readFromTag(path)
 	} else {
 		data, err = readFromFile(path)
@@ -207,10 +206,6 @@ func readFromFile(path string) ([]byte, error) {
 	return buf.Bytes(), nil
 }
 
-func isAudioFile(extension string) bool {
-	return strings.HasPrefix(mime.TypeByExtension(extension), "audio/")
-}
-
 func NewImageCache() (ImageCache, error) {
 	return newFileCache("Image", conf.Server.ImageCacheSize, consts.ImageCacheDir, consts.DefaultImageCacheMaxItems)
 }

persistence/album_repository.go

@@ -2,7 +2,6 @@ package persistence
 
 import (
 	"context"
-	"mime"
 	"os"
 	"path/filepath"
 	"sort"
@@ -16,6 +15,7 @@ import (
 	"github.com/deluan/navidrome/consts"
 	"github.com/deluan/navidrome/log"
 	"github.com/deluan/navidrome/model"
+	"github.com/deluan/navidrome/utils"
 	"github.com/deluan/rest"
 )
 
@@ -222,7 +222,7 @@ func getCoverFromPath(path string, hasEmbeddedCover bool) string {
 
 		for _, name := range names {
 			match, _ := filepath.Match(pat, strings.ToLower(name))
-			if match && isImageFile(filepath.Ext(name)) {
+			if match && utils.IsImageFile(name) {
 				return filepath.Join(filepath.Dir(path), name)
 			}
 		}
@@ -231,10 +231,6 @@ func getCoverFromPath(path string, hasEmbeddedCover bool) string {
 	return ""
 }
 
-func isImageFile(extension string) bool {
-	return strings.HasPrefix(mime.TypeByExtension(extension), "image/")
-}
-
 func (r *albumRepository) purgeEmpty() error {
 	del := Delete(r.tableName).Where("id not in (select distinct(album_id) from media_file)")
 	c, err := r.executeSQL(del)

scanner/metadata_ffmpeg.go

@@ -4,7 +4,6 @@ import (
 	"bufio"
 	"errors"
 	"fmt"
-	"mime"
 	"os"
 	"os/exec"
 	"path"
@@ -16,6 +15,7 @@ import (
 
 	"github.com/deluan/navidrome/conf"
 	"github.com/deluan/navidrome/log"
+	"github.com/deluan/navidrome/utils"
 )
 
 type Metadata struct {
@@ -66,8 +66,7 @@ func LoadAllAudioFiles(dirPath string) (map[string]os.FileInfo, error) {
 			continue
 		}
 		filePath := filepath.Join(dirPath, f.Name())
-		extension := path.Ext(filePath)
-		if !isAudioFile(extension) {
+		if !utils.IsAudioFile(filePath) {
 			continue
 		}
 		fi, err := os.Stat(filePath)
@@ -159,11 +158,6 @@ func extractMetadata(filePath, info string) (*Metadata, error) {
 	return m, nil
 }
 
-func isAudioFile(extension string) bool {
-	typ := mime.TypeByExtension(extension)
-	return strings.HasPrefix(typ, "audio/")
-}
-
 func (m *Metadata) parseInfo(info string) {
 	reader := strings.NewReader(info)
 	scanner := bufio.NewScanner(reader)

utils/files.go

@@ -0,0 +1,17 @@
+package utils
+
+import (
+	"mime"
+	"path/filepath"
+	"strings"
+)
+
+func IsAudioFile(filePath string) bool {
+	extension := filepath.Ext(filePath)
+	return strings.HasPrefix(mime.TypeByExtension(extension), "audio/")
+}
+
+func IsImageFile(filePath string) bool {
+	extension := filepath.Ext(filePath)
+	return strings.HasPrefix(mime.TypeByExtension(extension), "image/")
+}

utils/files_test.go

@@ -0,0 +1,38 @@
+package utils
+
+import (
+	"path/filepath"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Files", func() {
+	Describe("IsAudioFile", func() {
+		It("returns true for a MP3 file", func() {
+			Expect(IsAudioFile(filepath.Join("path", "to", "test.mp3"))).To(BeTrue())
+		})
+
+		It("returns true for a FLAC file", func() {
+			Expect(IsAudioFile("test.flac")).To(BeTrue())
+		})
+
+		It("returns false for a non-audio file", func() {
+			Expect(IsAudioFile("test.jpg")).To(BeFalse())
+		})
+	})
+
+	Describe("IsImageFile", func() {
+		It("returns true for a PNG file", func() {
+			Expect(IsImageFile(filepath.Join("path", "to", "test.png"))).To(BeTrue())
+		})
+
+		It("returns true for a JPEG file", func() {
+			Expect(IsImageFile("test.JPEG")).To(BeTrue())
+		})
+
+		It("returns false for a non-image file", func() {
+			Expect(IsImageFile("test.mp3")).To(BeFalse())
+		})
+	})
+})