Add GetBranchSHA class for get_branch_sha function with JSON definition

tools/github_tool_functions/get_branch_sha.py

@@ -0,0 +1,56 @@
+import requests
+import logging
+
+class GetBranchSHA:
+    def __init__(self, base_url, token, repo):
+        self.base_url = base_url
+        self.headers = {
+            "Authorization": f"token {token}",
+            "Accept": "application/vnd.github.v3+json"
+        }
+        self.repo = repo
+
+        # Set up logging
+        self.logger = logging.getLogger(__name__)
+        self.logger.setLevel(logging.INFO)
+        
+        # Create a file handler
+        file_handler = logging.FileHandler('get_branch_sha.log')
+        file_handler.setLevel(logging.INFO)
+        
+        # Create a console handler
+        console_handler = logging.StreamHandler()
+        console_handler.setLevel=logging.INFO)
+        
+        # Create a formatting for the logs
+        formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
+        file_handler.setFormatter(formatter)
+        console_handler.setFormatter(formatter)
+        
+        # Add the handlers to the logger
+        self.logger.addHandler(file_handler)
+        self.logger.addHandler(console_handler)
+
+    def __call__(self, branch):
+        url = f"{self.base_url}/repos/{self.repo}/git/refs/heads/{branch}"
+        response = requests.get(url, headers=self.headers)
+        if response.status_code == 200:
+            return response.json()["object"]["sha"]
+        else:
+            return f"Error getting branch SHA: {response.status_code}"
+
+# JSON definition for the get_branch_sha function
+get_branch_sha_definition = {
+    "name": "get_branch_sha",
+    "description": "Get the SHA of the latest commit on a branch",
+    "parameters": {
+        "type": "object",
+        "properties": {
+            "branch": {
+                "type": "string",
+                "description": "Name of the branch"
+            }
+        },
+        "required": ["branch"]
+    }
+}