[core] add pre-commit

.precommit/validate_commit_message.py

@@ -0,0 +1,38 @@
+import subprocess
+import sys
+
+
+def get_staged_files():
+    result = subprocess.run(["git", "diff", "--cached", "--name-only"], stdout=subprocess.PIPE, text=True)
+    files = result.stdout.splitlines()
+    return files
+
+
+def get_commit_message(commit_msg_filepath):
+    with open(commit_msg_filepath, 'r') as f:
+        return f.readline().strip()
+
+
+def main():
+    commit_msg_filepath = sys.argv[1]
+    commit_message = get_commit_message(commit_msg_filepath)
+    staged_files = get_staged_files()
+
+    has_plus_changes = any(f.startswith('src/plus') for f in staged_files)
+    print(commit_message)
+    starts_with_plus = commit_message.startswith('[PLUS]')
+
+    if has_plus_changes and not starts_with_plus:
+        print("'[PLUS]' not found in commit message, but there's changes are from 'src/plus'.")
+        return 1
+
+    if starts_with_plus and not all(f.startswith('src/plus') for f in staged_files):
+        print("'[PLUS]' found in commit message, but there's changes from other directories. \n"
+              "Changes MUST be only from 'src/plus'.")
+        return 1
+
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())