Avoid requesting projectCards for issue view

internal/featuredetection/detector_mock.go

@@ -1,5 +1,7 @@
 package featuredetection
 
+import "github.com/cli/cli/v2/internal/gh"
+
 type DisabledDetectorMock struct{}
 
 func (md *DisabledDetectorMock) IssueFeatures() (IssueFeatures, error) {
@@ -14,6 +16,10 @@ func (md *DisabledDetectorMock) RepositoryFeatures() (RepositoryFeatures, error)
 	return RepositoryFeatures{}, nil
 }
 
+func (md *DisabledDetectorMock) ProjectsV1() gh.ProjectsV1Support {
+	return gh.ProjectsV1Unsupported
+}
+
 type EnabledDetectorMock struct{}
 
 func (md *EnabledDetectorMock) IssueFeatures() (IssueFeatures, error) {
@@ -27,3 +33,7 @@ func (md *EnabledDetectorMock) PullRequestFeatures() (PullRequestFeatures, error
 func (md *EnabledDetectorMock) RepositoryFeatures() (RepositoryFeatures, error) {
 	return allRepositoryFeatures, nil
 }
+
+func (md *EnabledDetectorMock) ProjectsV1() gh.ProjectsV1Support {
+	return gh.ProjectsV1Supported
+}

internal/featuredetection/feature_detection.go

@@ -4,6 +4,7 @@ import (
 	"net/http"
 
 	"github.com/cli/cli/v2/api"
+	"github.com/cli/cli/v2/internal/gh"
 	"golang.org/x/sync/errgroup"
 
 	ghauth "github.com/cli/go-gh/v2/pkg/auth"
@@ -13,6 +14,7 @@ type Detector interface {
 	IssueFeatures() (IssueFeatures, error)
 	PullRequestFeatures() (PullRequestFeatures, error)
 	RepositoryFeatures() (RepositoryFeatures, error)
+	ProjectsV1() gh.ProjectsV1Support
 }
 
 type IssueFeatures struct {
@@ -199,3 +201,13 @@ func (d *detector) RepositoryFeatures() (RepositoryFeatures, error) {
 
 	return features, nil
 }
+
+func (d *detector) ProjectsV1() gh.ProjectsV1Support {
+	// Currently, projects v1 support is entirely dependent on the host. As this is deprecated in GHES,
+	// we will do feature detection on whether the GHES version has support.
+	if ghauth.IsEnterprise(d.host) {
+		return gh.ProjectsV1Supported
+	}
+
+	return gh.ProjectsV1Unsupported
+}

internal/featuredetection/feature_detection_test.go

@@ -5,8 +5,10 @@ import (
 	"testing"
 
 	"github.com/MakeNowJust/heredoc"
+	"github.com/cli/cli/v2/internal/gh"
 	"github.com/cli/cli/v2/pkg/httpmock"
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestIssueFeatures(t *testing.T) {
@@ -366,3 +368,19 @@ func TestRepositoryFeatures(t *testing.T) {
 		})
 	}
 }
+
+func TestProjectV1Support(t *testing.T) {
+	t.Parallel()
+
+	t.Run("when the host is enterprise, project v1 is supported", func(t *testing.T) {
+		detector := detector{host: "my.ghes.com"}
+		isProjectV1Supported := detector.ProjectsV1()
+		require.Equal(t, gh.ProjectsV1Supported, isProjectV1Supported)
+	})
+
+	t.Run("when the host is not enterprise, project v1 is not supported", func(t *testing.T) {
+		detector := detector{host: "github.com"}
+		isProjectV1Supported := detector.ProjectsV1()
+		require.Equal(t, gh.ProjectsV1Unsupported, isProjectV1Supported)
+	})
+}

internal/gh/projects.go

@@ -0,0 +1,23 @@
+package gh
+
+// ProjectsV1Support provides type safety and readability around whether or not Projects v1 is supported
+// by the targeted host.
+//
+// It is a sealed type to ensure that consumers must use the exported ProjectsV1Supported and ProjectsV1Unsupported
+// variables to get an instance of the type.
+type ProjectsV1Support interface {
+	sealed()
+}
+
+type projectsV1Supported struct{}
+
+func (projectsV1Supported) sealed() {}
+
+type projectsV1Unsupported struct{}
+
+func (projectsV1Unsupported) sealed() {}
+
+var (
+	ProjectsV1Supported   ProjectsV1Support = projectsV1Supported{}
+	ProjectsV1Unsupported ProjectsV1Support = projectsV1Unsupported{}
+)

pkg/cmd/issue/view/view.go

@@ -12,6 +12,8 @@ import (
 	"github.com/MakeNowJust/heredoc"
 	"github.com/cli/cli/v2/api"
 	"github.com/cli/cli/v2/internal/browser"
+	fd "github.com/cli/cli/v2/internal/featuredetection"
+	"github.com/cli/cli/v2/internal/gh"
 	"github.com/cli/cli/v2/internal/ghrepo"
 	"github.com/cli/cli/v2/internal/text"
 	"github.com/cli/cli/v2/pkg/cmd/issue/shared"
@@ -29,6 +31,7 @@ type ViewOptions struct {
 	IO         *iostreams.IOStreams
 	BaseRepo   func() (ghrepo.Interface, error)
 	Browser    browser.Browser
+	Detector   fd.Detector
 
 	IssueNumber int
 	WebMode     bool
@@ -89,7 +92,7 @@ func NewCmdView(f *cmdutil.Factory, runF func(*ViewOptions) error) *cobra.Comman
 
 var defaultFields = []string{
 	"number", "url", "state", "createdAt", "title", "body", "author", "milestone",
-	"assignees", "labels", "projectCards", "reactionGroups", "lastComment", "stateReason",
+	"assignees", "labels", "reactionGroups", "lastComment", "stateReason",
 }
 
 func viewRun(opts *ViewOptions) error {
@@ -114,6 +117,18 @@ func viewRun(opts *ViewOptions) error {
 			lookupFields.Add("comments")
 			lookupFields.Remove("lastComment")
 		}
+
+		// TODO projectsV1Deprecation
+		// Remove this section as we should no longer add projectCards
+		if opts.Detector == nil {
+			cachedClient := api.NewCachedHTTPClient(httpClient, time.Hour*24)
+			opts.Detector = fd.NewDetector(cachedClient, baseRepo.RepoHost())
+		}
+
+		projectsV1Support := opts.Detector.ProjectsV1()
+		if projectsV1Support == gh.ProjectsV1Supported {
+			lookupFields.Add("projectCards")
+		}
 	}
 
 	opts.IO.DetectTerminalTheme()

pkg/cmd/issue/view/view_test.go

@@ -10,6 +10,7 @@ import (
 
 	"github.com/cli/cli/v2/internal/browser"
 	"github.com/cli/cli/v2/internal/config"
+	fd "github.com/cli/cli/v2/internal/featuredetection"
 	"github.com/cli/cli/v2/internal/gh"
 	"github.com/cli/cli/v2/internal/ghrepo"
 	"github.com/cli/cli/v2/internal/run"
@@ -496,3 +497,66 @@ func TestIssueView_nontty_Comments(t *testing.T) {
 		})
 	}
 }
+
+// TODO projectsV1Deprecation
+// Remove this test.
+func TestProjectsV1Deprecation(t *testing.T) {
+	t.Run("when projects v1 is supported, is included in query", func(t *testing.T) {
+		ios, _, _, _ := iostreams.Test()
+
+		reg := &httpmock.Registry{}
+		reg.Register(
+			httpmock.GraphQL(`projectCards`),
+			// Simulate a GraphQL error to early exit the test.
+			httpmock.StatusStringResponse(500, ""),
+		)
+
+		_, cmdTeardown := run.Stub()
+		defer cmdTeardown(t)
+
+		// Ignore the error because we have no way to really stub it without
+		// fully stubbing a GQL error structure in the request body.
+		_ = viewRun(&ViewOptions{
+			IO: ios,
+			HttpClient: func() (*http.Client, error) {
+				return &http.Client{Transport: reg}, nil
+			},
+			BaseRepo: func() (ghrepo.Interface, error) {
+				return ghrepo.New("OWNER", "REPO"), nil
+			},
+
+			Detector:    &fd.EnabledDetectorMock{},
+			IssueNumber: 123,
+		})
+
+		// Verify that our request contained projectCards
+		reg.Verify(t)
+	})
+
+	t.Run("when projects v1 is not supported, is not included in query", func(t *testing.T) {
+		ios, _, _, _ := iostreams.Test()
+
+		reg := &httpmock.Registry{}
+		reg.Exclude(t, httpmock.GraphQL(`projectCards`))
+
+		_, cmdTeardown := run.Stub()
+		defer cmdTeardown(t)
+
+		// Ignore the error because we're not really interested in it.
+		_ = viewRun(&ViewOptions{
+			IO: ios,
+			HttpClient: func() (*http.Client, error) {
+				return &http.Client{Transport: reg}, nil
+			},
+			BaseRepo: func() (ghrepo.Interface, error) {
+				return ghrepo.New("OWNER", "REPO"), nil
+			},
+
+			Detector:    &fd.DisabledDetectorMock{},
+			IssueNumber: 123,
+		})
+
+		// Verify that our request contained projectCards
+		reg.Verify(t)
+	})
+}