From 15573e228686b0ec4674704d1ded30df6a5c83a5 Mon Sep 17 00:00:00 2001
From: Zohar Meir <33152084+zmeir@users.noreply.github.com>
Date: Thu, 2 Nov 2023 10:10:54 +0200
Subject: [PATCH] Fix error in `get_main_pr_languages` when the diff is empty

This can happen for example when you have one commit add a line to a file and the next commit deletes that line. Then if those are the only 2 commits in the PR the diff will be empty.
---
 pr_agent/git_providers/git_provider.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pr_agent/git_providers/git_provider.py b/pr_agent/git_providers/git_provider.py
index 6f986cf02..9dee9e3c8 100644
--- a/pr_agent/git_providers/git_provider.py
+++ b/pr_agent/git_providers/git_provider.py
@@ -143,6 +143,9 @@ def get_main_pr_language(languages, files) -> str:
     if not languages:
         get_logger().info("No languages detected")
         return main_language_str
+    if not files:
+        get_logger().info("No files in diff")
+        return main_language_str
 
     try:
         top_language = max(languages, key=languages.get).lower()