From 4d306e26919b04fb1c462aba18b5952a8b6cd74e Mon Sep 17 00:00:00 2001
From: daywalker90 <8257956+daywalker90@users.noreply.github.com>
Date: Sat, 13 Apr 2024 20:03:43 +0200
Subject: [PATCH] mssgen: preserve existing camel cases an edge case like
 MultifundchannelChannel_idsChannel_type was previously converted to
 MultifundchannelChannelIdschannelType instead of the correct
 MultifundchannelChannelIdsChannelType

---
 contrib/msggen/msggen/gen/grpc.py | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/contrib/msggen/msggen/gen/grpc.py b/contrib/msggen/msggen/gen/grpc.py
index 6f7857db35f7..8264d3f9dcdd 100644
--- a/contrib/msggen/msggen/gen/grpc.py
+++ b/contrib/msggen/msggen/gen/grpc.py
@@ -362,8 +362,15 @@ def generate_composite(self, prefix, field: CompositeField):
     def to_camel_case(self, snake_str):
         components = snake_str.split('_')
         # We capitalize the first letter of each component except the first one
-        # with the 'title' method and join them together.
-        return components[0] + ''.join(x.title() for x in components[1:])
+        # with the 'capitalize' method and join them together, while preserving
+        # existing camel cases.
+        camel_case = components[0]
+        for word in components[1:]:
+            if not word.isupper():
+                camel_case += word[0].upper() + word[1:]
+            else:
+                camel_case += word.capitalize()
+        return camel_case
 
     def generate_requests(self, service):
         for meth in service.methods: