feat(forge): add issue label getter

Co-Authored-By: Virgil <virgil@lethean.io>

docs/architecture.md

@@ -88,7 +88,7 @@ The `gitea/` package mirrors this using `GITEA_URL`/`GITEA_TOKEN` and `gitea.*`
 |------|-----------|
 | `client.go` | `New`, `NewFromConfig`, `GetCurrentUser`, `ForkRepo`, `CreatePullRequest` |
 | `repos.go` | `ListOrgRepos`, `ListOrgReposIter`, `ListUserRepos`, `ListUserReposIter`, `GetRepo`, `CreateOrgRepo`, `DeleteRepo`, `MigrateRepo` |
-| `issues.go` | `ListIssues`, `ListIssuesIter`, `GetIssue`, `CreateIssue`, `EditIssue`, `AssignIssue`, `ListPullRequests`, `ListPullRequestsIter`, `GetPullRequest`, `CreateIssueComment`, `ListIssueComments`, `ListIssueCommentsIter`, `CloseIssue` |
+| `issues.go` | `ListIssues`, `ListIssuesIter`, `GetIssue`, `CreateIssue`, `EditIssue`, `AssignIssue`, `ListPullRequests`, `ListPullRequestsIter`, `GetPullRequest`, `CreateIssueComment`, `GetIssueLabels`, `ListIssueComments`, `ListIssueCommentsIter`, `CloseIssue` |
 | `labels.go` | `ListOrgLabels`, `ListOrgLabelsIter`, `ListRepoLabels`, `ListRepoLabelsIter`, `CreateRepoLabel`, `GetLabelByName`, `EnsureLabel`, `AddIssueLabels`, `RemoveIssueLabel` |
 | `prs.go` | `MergePullRequest`, `SetPRDraft`, `ListPRReviews`, `GetCombinedStatus`, `DismissReview`, `UndismissReview` |
 | `webhooks.go` | `CreateRepoWebhook`, `ListRepoWebhooks` |

forge/issues.go

@@ -253,6 +253,17 @@ func (c *Client) CreateIssueComment(owner, repo string, issue int64, body string
 	return nil
 }
 
+// GetIssueLabels returns the labels currently attached to an issue.
+// Usage: GetIssueLabels(...)
+func (c *Client) GetIssueLabels(owner, repo string, number int64) ([]*forgejo.Label, error) {
+	labels, _, err := c.api.GetIssueLabels(owner, repo, number, forgejo.ListLabelsOptions{})
+	if err != nil {
+		return nil, log.E("forge.GetIssueLabels", "failed to get issue labels", err)
+	}
+
+	return labels, nil
+}
+
 // ListIssueComments returns comments for an issue.
 // Usage: ListIssueComments(...)
 func (c *Client) ListIssueComments(owner, repo string, number int64) ([]*forgejo.Comment, error) {

forge/issues_test.go

@@ -312,6 +312,25 @@ func TestClient_CreateIssueComment_Bad_ServerError_Good(t *testing.T) {
 	assert.Contains(t, err.Error(), "failed to create comment")
 }
 
+func TestClient_GetIssueLabels_Good(t *testing.T) {
+	client, srv := newTestClient(t)
+	defer srv.Close()
+
+	labels, err := client.GetIssueLabels("test-org", "org-repo", 1)
+	require.NoError(t, err)
+	require.Len(t, labels, 1)
+	assert.Equal(t, "bug", labels[0].Name)
+}
+
+func TestClient_GetIssueLabels_Bad_ServerError_Good(t *testing.T) {
+	client, srv := newErrorServer(t)
+	defer srv.Close()
+
+	_, err := client.GetIssueLabels("test-org", "org-repo", 1)
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "failed to get issue labels")
+}
+
 func TestClient_ListIssueComments_Good(t *testing.T) {
 	client, srv := newTestClient(t)
 	defer srv.Close()