feat(forge): add org label iterator

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

docs/architecture.md

@@ -89,7 +89,7 @@ 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` |
-| `labels.go` | `ListOrgLabels`, `ListRepoLabels`, `ListRepoLabelsIter`, `CreateRepoLabel`, `GetLabelByName`, `EnsureLabel`, `AddIssueLabels`, `RemoveIssueLabel` |
+| `labels.go` | `ListOrgLabels`, `ListOrgLabelsIter`, `ListRepoLabels`, `ListRepoLabelsIter`, `CreateRepoLabel`, `GetLabelByName`, `EnsureLabel`, `AddIssueLabels`, `RemoveIssueLabel` |
 | `prs.go` | `MergePullRequest`, `SetPRDraft`, `ListPRReviews`, `GetCombinedStatus`, `DismissReview` |
 | `webhooks.go` | `CreateRepoWebhook`, `ListRepoWebhooks` |
 | `orgs.go` | `ListMyOrgs`, `GetOrg`, `CreateOrg` |

forge/labels.go

@@ -48,6 +48,40 @@ func (c *Client) ListOrgLabels(org string) ([]*forgejo.Label, error) {
 	return all, nil
 }
 
+// ListOrgLabelsIter returns an iterator over unique labels across repos in the given organisation.
+// Note: The Forgejo SDK does not have a dedicated org-level labels endpoint.
+// Labels are yielded in first-seen order across repositories and deduplicated by name.
+// Usage: ListOrgLabelsIter(...)
+func (c *Client) ListOrgLabelsIter(org string) iter.Seq2[*forgejo.Label, error] {
+	return func(yield func(*forgejo.Label, error) bool) {
+		seen := make(map[string]struct{})
+
+		for repo, err := range c.ListOrgReposIter(org) {
+			if err != nil {
+				yield(nil, log.E("forge.ListOrgLabels", "failed to list org repos", err))
+				return
+			}
+
+			for label, err := range c.ListRepoLabelsIter(repo.Owner.UserName, repo.Name) {
+				if err != nil {
+					yield(nil, log.E("forge.ListOrgLabels", "failed to list repo labels", err))
+					return
+				}
+
+				key := strings.ToLower(label.Name)
+				if _, ok := seen[key]; ok {
+					continue
+				}
+				seen[key] = struct{}{}
+
+				if !yield(label, nil) {
+					return
+				}
+			}
+		}
+	}
+}
+
 // ListRepoLabels returns all labels for a repository.
 // Usage: ListRepoLabels(...)
 func (c *Client) ListRepoLabels(owner, repo string) ([]*forgejo.Label, error) {

forge/labels_test.go

@@ -161,6 +161,31 @@ func TestClient_ListOrgLabels_Good(t *testing.T) {
 	assert.Equal(t, "documentation", labels[2].Name)
 }
 
+func TestClient_ListOrgLabelsIter_Good(t *testing.T) {
+	client, srv := newTestClient(t)
+	defer srv.Close()
+
+	var names []string
+	for label, err := range client.ListOrgLabelsIter("test-org") {
+		require.NoError(t, err)
+		names = append(names, label.Name)
+	}
+
+	require.Len(t, names, 3)
+	assert.Equal(t, []string{"bug", "feature", "documentation"}, names)
+}
+
+func TestClient_ListOrgLabelsIter_Bad_ServerError_Good(t *testing.T) {
+	client, srv := newErrorServer(t)
+	defer srv.Close()
+
+	for _, err := range client.ListOrgLabelsIter("test-org") {
+		assert.Error(t, err)
+		assert.Contains(t, err.Error(), "failed to list org repos")
+		break
+	}
+}
+
 func TestClient_ListOrgLabels_Bad_ServerError_Good(t *testing.T) {
 	client, srv := newErrorServer(t)
 	defer srv.Close()