github: add write methods (bug 1989960)

src/lando/utils/github.py

@@ -62,7 +62,7 @@ def get(self, path: str, *args, **kwargs) -> dict:
 
     def post(self, path: str, *args, **kwargs) -> dict:
         """Send a POST request to the GitHub API with given args and kwargs."""
-        url = f"self.GITHUB_BASE_URL/{path}"
+        url = f"{self.GITHUB_BASE_URL}/{path}"
         return self.session.post(url, *args, **kwargs)
 
 
@@ -88,6 +88,10 @@ def _get(self, path: str, *args, **kwargs) -> dict:
         elif content_type == "application/vnd.github.diff; charset=utf-8":
             return result.text
 
+    def _post(self, path: str, *args, **kwargs):
+        result = self.client.post(path, *args, **kwargs)
+        return result.json()
+
     def list_pull_requests(self) -> list:
         """List all pull requests in the repo."""
         return self._get(f"{self.repo_base_url}/pulls")
@@ -110,6 +114,25 @@ def get_patch(self, pull_number: int) -> str:
             headers={"Accept": "application/vnd.github.patch"},
         )
 
+    def open_pull_request(self, pull_number: int) -> dict:
+        """Open the given pull request."""
+        return self._post(
+            f"{self.repo_base_url}/pulls/{pull_number}", json={"state": "open"}
+        )
+
+    def close_pull_request(self, pull_number: int) -> dict:
+        """Close the given pull request."""
+        return self._post(
+            f"{self.repo_base_url}/pulls/{pull_number}", json={"state": "closed"}
+        )
+
+    def add_comment_to_pull_request(self, pull_number: int, comment: str) -> dict:
+        """Add a comment to the given pull request."""
+        return self._post(
+            f"{self.repo_base_url}/issues/{pull_number}/comments",
+            json={"body": comment},
+        )
+
 
 class PullRequest:
     """A class that parses data returned from the GitHub API for pull requests."""