seperate routes, provide robust handler types, use mux

scanner/scanner.go

@@ -172,6 +172,8 @@ var coverFilenames = map[string]struct{}{
 	"front.jpeg":  {},
 }
 
+// ## begin callbacks
+// ## begin callbacks
 // ## begin callbacks
 
 func (s *Scanner) callbackItem(fullPath string, info *godirwalk.Dirent) error {
@@ -237,6 +239,8 @@ func decoded(in string) string {
 	return result
 }
 
+// ## begin handlers
+// ## begin handlers
 // ## begin handlers
 
 func (s *Scanner) handleFolder(it *item) error {