Load mime_types from external file

conf/mime/mime_types.go

@@ -0,0 +1,47 @@
+package mime
+
+import (
+	"mime"
+	"strings"
+
+	"github.com/navidrome/navidrome/conf"
+	"github.com/navidrome/navidrome/log"
+	"github.com/navidrome/navidrome/resources"
+	"gopkg.in/yaml.v3"
+)
+
+type mimeConf struct {
+	Types    map[string]string `yaml:"types"`
+	Lossless []string          `yaml:"lossless"`
+}
+
+var LosslessFormats []string
+
+func initMimeTypes() {
+	// In some circumstances, Windows sets JS mime-type to `text/plain`!
+	_ = mime.AddExtensionType(".js", "text/javascript")
+	_ = mime.AddExtensionType(".css", "text/css")
+
+	f, err := resources.FS().Open("mime_types.yaml")
+	if err != nil {
+		log.Fatal("Fatal error opening mime_types.yaml", err)
+	}
+	defer f.Close()
+
+	var mimeConf mimeConf
+	err = yaml.NewDecoder(f).Decode(&mimeConf)
+	if err != nil {
+		log.Fatal("Fatal error parsing mime_types.yaml", err)
+	}
+	for ext, typ := range mimeConf.Types {
+		_ = mime.AddExtensionType(ext, typ)
+	}
+
+	for _, ext := range mimeConf.Lossless {
+		LosslessFormats = append(LosslessFormats, strings.TrimPrefix(ext, "."))
+	}
+}
+
+func init() {
+	conf.AddHook(initMimeTypes)
+}