feat(gitea): add issue mutation helpers

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

gitea/issues.go

@@ -133,6 +133,41 @@ func (c *Client) CreateIssue(owner, repo string, opts gitea.CreateIssueOption) (
 	return issue, nil
 }
 
+// EditIssue edits an existing issue.
+// Usage: EditIssue(...)
+func (c *Client) EditIssue(owner, repo string, number int64, opts gitea.EditIssueOption) (*gitea.Issue, error) {
+	issue, _, err := c.api.EditIssue(owner, repo, number, opts)
+	if err != nil {
+		return nil, log.E("gitea.EditIssue", "failed to edit issue", err)
+	}
+
+	return issue, nil
+}
+
+// AssignIssue assigns an issue to the specified users.
+// Usage: AssignIssue(...)
+func (c *Client) AssignIssue(owner, repo string, number int64, assignees []string) error {
+	_, _, err := c.api.EditIssue(owner, repo, number, gitea.EditIssueOption{
+		Assignees: assignees,
+	})
+	if err != nil {
+		return log.E("gitea.AssignIssue", "failed to assign issue", err)
+	}
+	return nil
+}
+
+// CreateIssueComment posts a comment on an issue or pull request.
+// Usage: CreateIssueComment(...)
+func (c *Client) CreateIssueComment(owner, repo string, issue int64, body string) error {
+	_, _, err := c.api.CreateIssueComment(owner, repo, issue, gitea.CreateIssueCommentOption{
+		Body: body,
+	})
+	if err != nil {
+		return log.E("gitea.CreateIssueComment", "failed to create comment", err)
+	}
+	return nil
+}
+
 // ListIssueComments returns all comments for an issue.
 // Usage: ListIssueComments(...)
 func (c *Client) ListIssueComments(owner, repo string, number int64) ([]*gitea.Comment, error) {
@@ -253,6 +288,52 @@ func (c *Client) ListIssueCommentsIter(owner, repo string, number int64) iter.Se
 	}
 }
 
+// GetIssueLabels returns the labels currently attached to an issue.
+// Usage: GetIssueLabels(...)
+func (c *Client) GetIssueLabels(owner, repo string, number int64) ([]*gitea.Label, error) {
+	labels, _, err := c.api.GetIssueLabels(owner, repo, number, gitea.ListLabelsOptions{})
+	if err != nil {
+		return nil, log.E("gitea.GetIssueLabels", "failed to get issue labels", err)
+	}
+
+	return labels, nil
+}
+
+// AddIssueLabels adds labels to an issue.
+// Usage: AddIssueLabels(...)
+func (c *Client) AddIssueLabels(owner, repo string, number int64, labelIDs []int64) error {
+	_, _, err := c.api.AddIssueLabels(owner, repo, number, gitea.IssueLabelsOption{
+		Labels: labelIDs,
+	})
+	if err != nil {
+		return log.E("gitea.AddIssueLabels", "failed to add labels to issue", err)
+	}
+	return nil
+}
+
+// RemoveIssueLabel removes a label from an issue.
+// Usage: RemoveIssueLabel(...)
+func (c *Client) RemoveIssueLabel(owner, repo string, number, labelID int64) error {
+	_, err := c.api.DeleteIssueLabel(owner, repo, number, labelID)
+	if err != nil {
+		return log.E("gitea.RemoveIssueLabel", "failed to remove label from issue", err)
+	}
+	return nil
+}
+
+// CloseIssue closes an issue by setting its state to closed.
+// Usage: CloseIssue(...)
+func (c *Client) CloseIssue(owner, repo string, number int64) error {
+	closed := gitea.StateClosed
+	_, _, err := c.api.EditIssue(owner, repo, number, gitea.EditIssueOption{
+		State: &closed,
+	})
+	if err != nil {
+		return log.E("gitea.CloseIssue", "failed to close issue", err)
+	}
+	return nil
+}
+
 // GetPullRequest returns a single pull request by number.
 // Usage: GetPullRequest(...)
 func (c *Client) GetPullRequest(owner, repo string, number int64) (*gitea.PullRequest, error) {

gitea/issues_test.go

@@ -234,6 +234,132 @@ func TestClient_CreateIssue_Bad_ServerError_Good(t *testing.T) {
 	assert.Contains(t, err.Error(), "failed to create issue")
 }
 
+func TestClient_EditIssue_Good(t *testing.T) {
+	client, srv := newTestClient(t)
+	defer srv.Close()
+
+	issue, err := client.EditIssue("test-org", "org-repo", 1, giteaSDK.EditIssueOption{
+		Title: "Updated Title",
+	})
+	require.NoError(t, err)
+	assert.NotNil(t, issue)
+}
+
+func TestClient_EditIssue_Bad_ServerError_Good(t *testing.T) {
+	client, srv := newErrorServer(t)
+	defer srv.Close()
+
+	_, err := client.EditIssue("test-org", "org-repo", 1, giteaSDK.EditIssueOption{
+		Title: "Updated Title",
+	})
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "failed to edit issue")
+}
+
+func TestClient_AssignIssue_Good(t *testing.T) {
+	client, srv := newTestClient(t)
+	defer srv.Close()
+
+	err := client.AssignIssue("test-org", "org-repo", 1, []string{"dev1", "dev2"})
+	require.NoError(t, err)
+}
+
+func TestClient_AssignIssue_Bad_ServerError_Good(t *testing.T) {
+	client, srv := newErrorServer(t)
+	defer srv.Close()
+
+	err := client.AssignIssue("test-org", "org-repo", 1, []string{"dev1"})
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "failed to assign issue")
+}
+
+func TestClient_CreateIssueComment_Good(t *testing.T) {
+	client, srv := newTestClient(t)
+	defer srv.Close()
+
+	err := client.CreateIssueComment("test-org", "org-repo", 1, "LGTM")
+	require.NoError(t, err)
+}
+
+func TestClient_CreateIssueComment_Bad_ServerError_Good(t *testing.T) {
+	client, srv := newErrorServer(t)
+	defer srv.Close()
+
+	err := client.CreateIssueComment("test-org", "org-repo", 1, "LGTM")
+	assert.Error(t, err)
+	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_AddIssueLabels_Good(t *testing.T) {
+	client, srv := newTestClient(t)
+	defer srv.Close()
+
+	err := client.AddIssueLabels("test-org", "org-repo", 1, []int64{1})
+	require.NoError(t, err)
+}
+
+func TestClient_AddIssueLabels_Bad_ServerError_Good(t *testing.T) {
+	client, srv := newErrorServer(t)
+	defer srv.Close()
+
+	err := client.AddIssueLabels("test-org", "org-repo", 1, []int64{1})
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "failed to add labels to issue")
+}
+
+func TestClient_RemoveIssueLabel_Good(t *testing.T) {
+	client, srv := newTestClient(t)
+	defer srv.Close()
+
+	err := client.RemoveIssueLabel("test-org", "org-repo", 1, 1)
+	require.NoError(t, err)
+}
+
+func TestClient_RemoveIssueLabel_Bad_ServerError_Good(t *testing.T) {
+	client, srv := newErrorServer(t)
+	defer srv.Close()
+
+	err := client.RemoveIssueLabel("test-org", "org-repo", 1, 1)
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "failed to remove label from issue")
+}
+
+func TestClient_CloseIssue_Good(t *testing.T) {
+	client, srv := newTestClient(t)
+	defer srv.Close()
+
+	err := client.CloseIssue("test-org", "org-repo", 1)
+	require.NoError(t, err)
+}
+
+func TestClient_CloseIssue_Bad_ServerError_Good(t *testing.T) {
+	client, srv := newErrorServer(t)
+	defer srv.Close()
+
+	err := client.CloseIssue("test-org", "org-repo", 1)
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "failed to close issue")
+}
+
 func TestClient_ListPullRequests_Good(t *testing.T) {
 	client, srv := newTestClient(t)
 	defer srv.Close()

gitea/testhelper_test.go

@@ -85,18 +85,57 @@ func newGiteaMux() *http.ServeMux {
 
 	// Single issue.
 	mux.HandleFunc("/api/v1/repos/test-org/org-repo/issues/1", func(w http.ResponseWriter, r *http.Request) {
+		switch r.Method {
+		case http.MethodPatch:
+			jsonResponse(w, map[string]any{
+				"id": 1, "number": 1, "title": "Issue 1", "state": "closed",
+				"body": "First issue body",
+			})
+		default:
 			jsonResponse(w, map[string]any{
 				"id": 1, "number": 1, "title": "Issue 1", "state": "open",
 				"body": "First issue body",
 			})
+		}
 	})
 
 	// Issue comments.
 	mux.HandleFunc("/api/v1/repos/test-org/org-repo/issues/1/comments", func(w http.ResponseWriter, r *http.Request) {
+		switch r.Method {
+		case http.MethodPost:
+			w.WriteHeader(http.StatusCreated)
+			jsonResponse(w, map[string]any{
+				"id": 100, "body": "test comment",
+				"user": map[string]any{"login": "test-user"},
+			})
+		default:
 			jsonResponse(w, []map[string]any{
 				{"id": 100, "body": "comment 1", "user": map[string]any{"login": "user1"}, "created_at": "2026-01-01T00:00:00Z", "updated_at": "2026-01-01T00:00:00Z"},
 				{"id": 101, "body": "comment 2", "user": map[string]any{"login": "user2"}, "created_at": "2026-01-02T00:00:00Z", "updated_at": "2026-01-02T00:00:00Z"},
 			})
+		}
+	})
+
+	// Issue labels.
+	mux.HandleFunc("/api/v1/repos/test-org/org-repo/issues/1/labels", func(w http.ResponseWriter, r *http.Request) {
+		switch r.Method {
+		case http.MethodPost:
+			jsonResponse(w, []map[string]any{
+				{"id": 1, "name": "bug", "color": "#ff0000"},
+			})
+		default:
+			jsonResponse(w, []map[string]any{
+				{"id": 1, "name": "bug", "color": "#ff0000"},
+			})
+		}
+	})
+
+	// Remove issue label.
+	mux.HandleFunc("/api/v1/repos/test-org/org-repo/issues/1/labels/1", func(w http.ResponseWriter, r *http.Request) {
+		if r.Method == http.MethodDelete {
+			w.WriteHeader(http.StatusNoContent)
+			return
+		}
 	})
 
 	// Pull requests.