panic on lower case filename

1 files changed, 7 insertions, 2 deletions

diff --git a/findFilename.go b/findFilename.go
index c99e289..c605dcb 100644
--- a/findFilename.go
+++ b/findFilename.go
@@ -3,6 +3,7 @@ package config
 import (
 	"fmt"
 
+	"go.wit.com/log"
 	"google.golang.org/protobuf/proto"
 	"google.golang.org/protobuf/reflect/protoreflect"
 )
@@ -21,13 +22,17 @@ func GetFilename(pb proto.Message) (string, error) {
 
 	// 3. Find the specific field descriptor by its protobuf name ("Filename").
 	// Note: The field name must match the name in the .proto file.
-	fieldName := protoreflect.Name("filename")
+	fieldName := protoreflect.Name("Filename")
 	fieldDescriptor := descriptor.Fields().ByName(fieldName)
 
 	// try upper case
 	if fieldDescriptor == nil {
-		fieldName = protoreflect.Name("Filename")
+		fieldName = protoreflect.Name("filename")
 		fieldDescriptor = descriptor.Fields().ByName(fieldName)
+		if fieldDescriptor != nil {
+			log.Info("")
+			panic(".proto file must have 'Filename', not 'filename'")
+		}
 	}
 
 	// 4. Check if the field was found. If not, return false.