refactor: configure output centrally, allow testing output

api/client.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/base64"
 	"fmt"
+	"io"
 	"os"
 	"os/user"
 	"path/filepath"
@@ -31,6 +32,8 @@ type Client struct {
 	Project           string
 	Log               *log.Client
 	KubeconfigContext string
+
+	writer format.Writer
 }
 
 type ClientOpt func(c *Client) error
@@ -43,6 +46,7 @@ func New(ctx context.Context, apiClusterContext, project string, opts ...ClientO
 	client := &Client{
 		Project:           project,
 		KubeconfigContext: apiClusterContext,
+		writer:            format.NewWriter(os.Stdout),
 	}
 	if err := client.loadConfig(apiClusterContext); err != nil {
 		return nil, err
@@ -70,6 +74,14 @@ func New(ctx context.Context, apiClusterContext, project string, opts ...ClientO
 	return client, nil
 }
 
+// OutputWriter sets the writer for the client.
+func OutputWriter(w io.Writer) ClientOpt {
+	return func(c *Client) error {
+		c.writer = format.NewWriter(w)
+		return nil
+	}
+}
+
 // LogClient sets up a log client connected to the provided address.
 func LogClient(ctx context.Context, address string, insecure bool) ClientOpt {
 	return func(c *Client) error {

api/list.go

@@ -11,7 +11,6 @@ import (
 	"sync"
 
 	management "github.com/ninech/apis/management/v1alpha1"
-	"github.com/ninech/nctl/internal/format"
 	"k8s.io/apimachinery/pkg/api/meta"
 	"k8s.io/apimachinery/pkg/conversion"
 	runtimeclient "sigs.k8s.io/controller-runtime/pkg/client"
@@ -150,7 +149,7 @@ func (c *Client) ListObjects(ctx context.Context, list runtimeclient.ObjectList,
 			tempList := reflect.New(reflect.TypeOf(list).Elem()).Interface().(runtimeclient.ObjectList)
 			tempList.GetObjectKind().SetGroupVersionKind(list.GetObjectKind().GroupVersionKind())
 			if err := c.List(ctx, tempList, append(tempOpts, runtimeclient.InNamespace(proj.Name))...); err != nil {
-				format.PrintWarningf("error when searching in project %s: %s\n", proj.Name, err)
+				c.writer.Warningf("error when searching in project %s: %s\n", proj.Name, err)
 				return
 			}
 			tempListItems := reflect.ValueOf(tempList).Elem().FieldByName("Items")

api/validation/apps.go

@@ -1,3 +1,5 @@
+// Package validation provides functionality to validate git repositories
+// and their access configurations.
 package validation
 
 import (
@@ -15,6 +17,8 @@ import (
 
 // RepositoryValidator validates a git repository
 type RepositoryValidator struct {
+	format.Writer
+
 	GitInformationServiceURL string
 	Token                    string
 	Debug                    bool
@@ -27,7 +31,7 @@ func (v *RepositoryValidator) Validate(ctx context.Context, git *apps.GitTarget,
 		return err
 	}
 	msg := " testing repository access 🔐"
-	spinner, err := format.NewSpinner(msg, msg)
+	spinner, err := v.Spinner(msg, msg)
 	if err != nil {
 		return err
 	}

apply/apply.go

@@ -1,8 +1,16 @@
+// Package apply provides the implementation for the apply command,
+// allowing users to apply resources from files.
 package apply
 
-import "os"
+import (
+	"os"
+
+	"github.com/ninech/nctl/internal/format"
+)
 
 type Cmd struct {
+	format.Writer
+
 	Filename *os.File `short:"f" completion-predictor:"file"`
 	FromFile fromFile `cmd:"" default:"1" name:"-f <file>" help:"Apply any resource from a yaml or json file."`
 }

apply/file.go

@@ -14,11 +14,10 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/client"
 )
 
-type fromFile struct {
-}
+type fromFile struct{}
 
 func (cmd *Cmd) Run(ctx context.Context, client *api.Client, apply *Cmd) error {
-	return File(ctx, client, apply.Filename, UpdateOnExists())
+	return File(ctx, cmd.Writer, client, apply.Filename, UpdateOnExists())
 }
 
 type Option func(*config)
@@ -40,7 +39,7 @@ func Delete() Option {
 	}
 }
 
-func File(ctx context.Context, client *api.Client, file *os.File, opts ...Option) error {
+func File(ctx context.Context, w format.Writer, client *api.Client, file *os.File, opts ...Option) error {
 	if file == nil {
 		return fmt.Errorf("missing flag -f, --filename=STRING")
 	}
@@ -60,7 +59,7 @@ func File(ctx context.Context, client *api.Client, file *os.File, opts ...Option
 		if err := client.Delete(ctx, obj); err != nil {
 			return err
 		}
-		format.PrintSuccessf("🗑", "deleted %s", formatObj(obj))
+		w.Successf("🗑", "deleted %s", formatObj(obj))
 
 		return nil
 	}
@@ -72,7 +71,7 @@ func File(ctx context.Context, client *api.Client, file *os.File, opts ...Option
 		return err
 	}
 
-	format.PrintSuccessf("🏗", "created %s", formatObj(obj))
+	w.Successf("🏗", "created %s", formatObj(obj))
 	return nil
 }
 
@@ -99,7 +98,6 @@ func update(ctx context.Context, client *api.Client, obj *unstructured.Unstructu
 		return err
 	}
 
-	format.PrintSuccessf("🏗", "applied %s", formatObj(obj))
 	return nil
 }
 

apply/file_test.go

@@ -8,6 +8,7 @@ import (
 
 	runtimev1 "github.com/crossplane/crossplane-runtime/apis/common/v1"
 	iam "github.com/ninech/apis/iam/v1alpha1"
+	"github.com/ninech/nctl/internal/format"
 	"github.com/ninech/nctl/internal/test"
 	"github.com/stretchr/testify/require"
 	"k8s.io/apimachinery/pkg/api/errors"
@@ -59,6 +60,7 @@ func TestFile(t *testing.T) {
 	ctx := context.Background()
 	apiClient, err := test.SetupClient()
 	require.NoError(t, err)
+	w := format.NewWriter(t.Output())
 
 	tests := map[string]struct {
 		name              string
@@ -128,7 +130,7 @@ func TestFile(t *testing.T) {
 			if tc.delete || tc.update {
 				fileToCreate, err := os.Open(f.Name())
 				require.NoError(t, err)
-				err = File(ctx, apiClient, fileToCreate) // This will close fileToCreate
+				err = File(ctx, w, apiClient, fileToCreate) // This will close fileToCreate
 				require.NoError(t, err)
 			}
 
@@ -150,7 +152,7 @@ func TestFile(t *testing.T) {
 			fileToApply, err := os.Open(f.Name())
 			require.NoError(t, err)
 
-			if err := File(ctx, apiClient, fileToApply, opts...); err != nil {
+			if err := File(ctx, w, apiClient, fileToApply, opts...); err != nil {
 				if tc.expectedErr {
 					return
 				}

auth/cluster.go

@@ -12,10 +12,13 @@ import (
 	"github.com/ninech/nctl/api"
 	"github.com/ninech/nctl/api/config"
 	"github.com/ninech/nctl/api/util"
+	"github.com/ninech/nctl/internal/format"
+
 	"k8s.io/apimachinery/pkg/types"
 )
 
 type ClusterCmd struct {
+	format.Writer
 	Name       string `arg:"" help:"Name of the cluster to authenticate with. Also accepts 'name/project' format."`
 	ExecPlugin bool   `help:"Automatically run exec plugin after writing the kubeconfig."`
 }
@@ -91,7 +94,7 @@ func (a *ClusterCmd) Run(ctx context.Context, client *api.Client) error {
 		}
 	}
 
-	if err := login(cfg, client.KubeconfigPath, userInfo.User, "", switchCurrentContext()); err != nil {
+	if err := login(a.Writer, cfg, client.KubeconfigPath, userInfo.User, "", switchCurrentContext()); err != nil {
 		return fmt.Errorf("error logging in to cluster %s: %w", name, err)
 	}
 

auth/login.go

@@ -26,6 +26,7 @@ const (
 )
 
 type LoginCmd struct {
+	format.Writer
 	API                         API    `embed:"" prefix:"api-"`
 	Organization                string `help:"Name of your organization to use when providing an API client ID/secret." env:"NCTL_ORGANIZATION"`
 	IssuerURL                   string `help:"OIDC issuer URL of the API." default:"${issuer_url}" hidden:""`
@@ -69,7 +70,7 @@ func (l *LoginCmd) Run(ctx context.Context) error {
 		if err != nil {
 			return err
 		}
-		return login(cfg, loadingRules.GetDefaultFilename(), userInfo.User, "", project(l.Organization))
+		return login(l.Writer, cfg, loadingRules.GetDefaultFilename(), userInfo.User, "", project(l.Organization))
 	}
 
 	if l.API.ClientID != "" {
@@ -92,7 +93,7 @@ func (l *LoginCmd) Run(ctx context.Context) error {
 		if userInfo.Project != "" {
 			proj = userInfo.Project
 		}
-		return login(cfg, loadingRules.GetDefaultFilename(), userInfo.User, "", project(proj))
+		return login(l.Writer, cfg, loadingRules.GetDefaultFilename(), userInfo.User, "", project(proj))
 	}
 
 	if !l.ForceInteractiveEnvOverride && !format.IsInteractiveEnvironment(os.Stdout) {
@@ -117,17 +118,33 @@ func (l *LoginCmd) Run(ctx context.Context) error {
 
 	org := userInfo.Orgs[0]
 	if len(userInfo.Orgs) > 1 {
-		fmt.Printf("Multiple organizations found for the account %q.\n", userInfo.User)
-		fmt.Printf("Defaulting to %q\n", org)
-		printAvailableOrgsString(org, userInfo.Orgs)
+		l.Printf("Multiple organizations found for the account %q.\n", userInfo.User)
+		l.Printf("Defaulting to %q\n", org)
+		l.printAvailableOrgsString(org, userInfo.Orgs)
 	}
 
 	cfg, err := newAPIConfig(apiURL, issuerURL, command, l.ClientID, withOrganization(org))
 	if err != nil {
 		return err
 	}
 
-	return login(cfg, loadingRules.GetDefaultFilename(), userInfo.User, "", project(org))
+	return login(l.Writer, cfg, loadingRules.GetDefaultFilename(), userInfo.User, "", project(org))
+}
+
+func (l *LoginCmd) printAvailableOrgsString(currentorg string, orgs []string) {
+	l.Println("\nAvailable Organizations:")
+
+	for _, org := range orgs {
+		activeMarker := ""
+		if currentorg == org {
+			activeMarker = "*"
+		}
+
+		l.Printf("%s\t%s\n", activeMarker, org)
+	}
+
+	l.Printf("\nTo switch the organization use the following command:\n")
+	l.Printf("$ nctl auth set-org <org-name>\n")
 }
 
 func (l *LoginCmd) tokenGetter() api.TokenGetter {
@@ -254,7 +271,7 @@ func switchCurrentContext() loginOption {
 	}
 }
 
-func login(newConfig *clientcmdapi.Config, kubeconfigPath, userName string, toOrg string, opts ...loginOption) error {
+func login(w format.Writer, newConfig *clientcmdapi.Config, kubeconfigPath, userName string, toOrg string, opts ...loginOption) error {
 	loginConfig := &loginConfig{}
 	for _, opt := range opts {
 		opt(loginConfig)
@@ -284,15 +301,15 @@ func login(newConfig *clientcmdapi.Config, kubeconfigPath, userName string, toOr
 	}
 
 	if toOrg != "" {
-		format.PrintSuccessf("🏢", "switched to the organization %q", toOrg)
+		w.Successf("🏢", "switched to the organization %q\n", toOrg)
 	}
-	format.PrintSuccessf("📋", "added %s to kubeconfig", newConfig.CurrentContext)
+	w.Successf("📋", "added %s to kubeconfig\n", newConfig.CurrentContext)
 
 	loginMessage := fmt.Sprintf("logged into cluster %s", newConfig.CurrentContext)
 	if strings.TrimSpace(userName) != "" {
 		loginMessage = fmt.Sprintf("logged into cluster %s as %s", newConfig.CurrentContext, userName)
 	}
-	format.PrintSuccess("🚀", loginMessage)
+	w.Success("🚀", loginMessage+"\n")
 
 	return nil
 }

auth/logout.go

@@ -22,6 +22,7 @@ import (
 )
 
 type LogoutCmd struct {
+	format.Writer
 	APIURL    string `help:"URL of the Nine API." default:"https://nineapis.ch" env:"NCTL_API_URL" name:"api-url"`
 	IssuerURL string `help:"OIDC issuer URL of the API." default:"https://auth.nine.ch/auth/realms/pub"`
 	ClientID  string `help:"OIDC client ID of the API." default:"nineapis.ch-f178254"`
@@ -43,12 +44,15 @@ func (l *LogoutCmd) Run(ctx context.Context) error {
 	filePath := path.Join(homedir.HomeDir(), api.DefaultTokenCachePath, filename)
 
 	if _, err = os.Stat(filePath); err != nil {
-		format.PrintFailuref("🤔", "seems like you are already logged out from %s", l.APIURL)
+		l.Failuref("🤔", "seems like you are already logged out from %s\n", l.APIURL)
 		return nil
 	}
 
 	r := repository.Repository{}
-	cache, err := r.FindByKey(tokencache.Config{Directory: path.Join(homedir.HomeDir(), api.DefaultTokenCachePath)}, key)
+	cache, err := r.FindByKey(
+		tokencache.Config{Directory: path.Join(homedir.HomeDir(), api.DefaultTokenCachePath)},
+		key,
+	)
 	if err != nil {
 		return fmt.Errorf("error finding cache file: %w", err)
 	}
@@ -57,9 +61,17 @@ func (l *LogoutCmd) Run(ctx context.Context) error {
 	form.Add("client_id", l.ClientID)
 	form.Add("refresh_token", cache.RefreshToken)
 
-	logoutEndpoint := strings.Join([]string{l.IssuerURL, "protocol", "openid-connect", "logout"}, "/")
-
-	req, err := http.NewRequestWithContext(ctx, http.MethodPost, logoutEndpoint, strings.NewReader(form.Encode()))
+	logoutEndpoint := strings.Join(
+		[]string{l.IssuerURL, "protocol", "openid-connect", "logout"},
+		"/",
+	)
+
+	req, err := http.NewRequestWithContext(
+		ctx,
+		http.MethodPost,
+		logoutEndpoint,
+		strings.NewReader(form.Encode()),
+	)
 	if err != nil {
 		return fmt.Errorf("error creating request: %w", err)
 	}
@@ -87,7 +99,7 @@ func (l *LogoutCmd) Run(ctx context.Context) error {
 		return fmt.Errorf("error removing the local cache: %w", err)
 	}
 
-	format.PrintSuccessf("👋", "logged out from %s", l.APIURL)
+	l.Successf("👋", "logged out from %s\n", l.APIURL)
 
 	return nil
 }

auth/print_access_token.go

@@ -2,14 +2,16 @@ package auth
 
 import (
 	"context"
-	"fmt"
 
 	"github.com/ninech/nctl/api"
+	"github.com/ninech/nctl/internal/format"
 )
 
-type PrintAccessTokenCmd struct{}
+type PrintAccessTokenCmd struct {
+	format.Writer
+}
 
-func (o *PrintAccessTokenCmd) Run(ctx context.Context, client *api.Client) error {
-	fmt.Println(client.Token(ctx))
+func (cmd *PrintAccessTokenCmd) Run(ctx context.Context, client *api.Client) error {
+	cmd.Println(client.Token(ctx))
 	return nil
 }