feat(copr): add method for getting chroots

Add method that returns set of chroots configured on the given Copr
project.

Related to packit/packit-service#1499

Signed-off-by: Matej Focko <[email protected]>

packit/copr_helper.py

@@ -4,7 +4,7 @@
 import logging
 import time
 from datetime import datetime, timedelta
-from typing import Callable, List, Optional, Dict, Tuple, Any
+from typing import Callable, List, Optional, Dict, Tuple, Any, Set
 
 from cachetools.func import ttl_cache
 from copr.v3 import Client as CoprClient
@@ -396,3 +396,19 @@ def get_repo_download_url(self, owner: str, project: str, chroot: str) -> str:
             raise PackitCoprProjectException(
                 f"There is no such target {chroot} in {owner}/{project}."
             )
+
+    def get_chroots(self, owner: str, project: str) -> Set[str]:
+        """
+        Get chroots set on a specific project.
+
+        Args:
+            owner: Owner of the Copr project.
+            project: Name of the Copr project.
+
+        Returns:
+            Set of all enabled chroots on the requested Copr project.
+        """
+        copr_project = self.copr_client.project_proxy.get(
+            ownername=owner, projectname=project
+        )
+        return set(copr_project.chroot_repos.keys())