feat: add tenants use cmd (#109)

internal/cli/cli.go

@@ -130,6 +130,20 @@ func (c *cli) getTenant() (tenant, error) {
 	return t, nil
 }
 
+// listTenants fetches all of the configured tenants
+func (c *cli) listTenants() ([]tenant, error) {
+	if err := c.init(); err != nil {
+		return []tenant{}, err
+	}
+
+	tenants := make([]tenant, 0, len(c.config.Tenants))
+	for _, t := range c.config.Tenants {
+		tenants = append(tenants, t)
+	}
+
+	return tenants, nil
+}
+
 // addTenant assigns an existing, or new tenant. This is expected to be called
 // after a login has completed.
 func (c *cli) addTenant(ten tenant) error {
@@ -151,6 +165,14 @@ func (c *cli) addTenant(ten tenant) error {
 
 	c.config.Tenants[ten.Name] = ten
 
+	if err := c.persistConfig(); err != nil {
+		return fmt.Errorf("persisting config: %w", err)
+	}
+
+	return nil
+}
+
+func (c *cli) persistConfig() error {
 	dir := filepath.Dir(c.path)
 	if _, err := os.Stat(dir); os.IsNotExist(err) {
 		if err := os.MkdirAll(dir, 0700); err != nil {
@@ -166,7 +188,6 @@ func (c *cli) addTenant(ten tenant) error {
 	if err := ioutil.WriteFile(c.path, buf, 0600); err != nil {
 		return err
 	}
-
 	return nil
 }
 

internal/cli/root.go

@@ -60,6 +60,7 @@ func Execute() {
 	// order of the comamnds here matters
 	// so add new commands in a place that reflect its relevance or relation with other commands:
 	rootCmd.AddCommand(loginCmd(cli))
+	rootCmd.AddCommand(tenantsCmd(cli))
 	rootCmd.AddCommand(appsCmd(cli))
 	rootCmd.AddCommand(quickstartsCmd(cli))
 	rootCmd.AddCommand(apisCmd(cli))

internal/cli/tenants.go

@@ -0,0 +1,66 @@
+package cli
+
+import (
+	"fmt"
+
+	"github.com/auth0/auth0-cli/internal/prompt"
+	"github.com/spf13/cobra"
+)
+
+func tenantsCmd(cli *cli) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "tenants",
+		Short: "Manage configured tenants",
+	}
+
+	cmd.AddCommand(useTenantCmd(cli))
+	return cmd
+}
+
+func useTenantCmd(cli *cli) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:     "use",
+		Aliases: []string{"select"},
+		Short:   "Set the active tenant",
+		Long:    `auth0 tenants use <tenant>`,
+		Args:    cobra.MaximumNArgs(1),
+		PreRun: func(cmd *cobra.Command, args []string) {
+			prepareInteractivity(cmd)
+		},
+		RunE: func(cmd *cobra.Command, args []string) error {
+			var selectedTenant string
+			if len(args) == 0 {
+				tens, err := cli.listTenants()
+				if err != nil {
+					return fmt.Errorf("unable to load tenants from config")
+				}
+
+				tenNames := make([]string, len(tens))
+				for i, t := range tens {
+					tenNames[i] = t.Name
+				}
+
+				input := prompt.SelectInput("tenant", "Tenant:", "Tenant to activate", tenNames, true)
+				if err := prompt.AskOne(input, &selectedTenant); err != nil {
+					return err
+				}
+			} else {
+				requestedTenant := args[0]
+				t, ok := cli.config.Tenants[requestedTenant]
+				if !ok {
+					return fmt.Errorf("Unable to find tenant in config: %s", requestedTenant)
+
+				}
+				selectedTenant = t.Name
+			}
+
+			cli.config.DefaultTenant = selectedTenant
+			if err := cli.persistConfig(); err != nil {
+				return fmt.Errorf("persisting config: %w", err)
+			}
+			return nil
+		},
+	}
+
+	return cmd
+}