Add completion command.

internal/cli/completion.go

@@ -0,0 +1,70 @@
+package cli
+
+import (
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+func completionCmd(cli *cli) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "completion [bash|zsh|fish|powershell]",
+		Short: "generate completion script",
+		Long: `To load completions:
+
+Bash:
+
+$ source <(auth0 completion bash)
+
+# To load completions for each session, execute once:
+Linux:
+  $ auth0 completion bash > /etc/bash_completion.d/auth0
+MacOS:
+  $ auth0 completion bash > /usr/local/etc/bash_completion.d/auth0
+
+Zsh:
+
+# If shell completion is not already enabled in your environment you will need
+# to enable it.  You can execute the following once:
+
+$ echo "autoload -U compinit; compinit" >> ~/.zshrc
+
+# To load completions for each session, execute once:
+$ auth0 completion zsh > "${fpath[1]}/_auth0"
+
+# You will need to start a new shell for this setup to take effect.
+
+Fish:
+
+$ auth0 completion fish | source
+
+# To load completions for each session, execute once:
+$ auth0 completion fish > ~/.config/fish/completions/auth0.fish
+
+Powershell:
+
+PS> auth0 completion powershell | Out-String | Invoke-Expression
+
+# To load completions for every new session, run:
+PS> auth0 completion powershell > auth0.ps1
+# and source this file from your powershell profile.
+`,
+		DisableFlagsInUseLine: true,
+		ValidArgs:             []string{"bash", "zsh", "fish", "powershell"},
+		Args:                  cobra.ExactValidArgs(1),
+		Run: func(cmd *cobra.Command, args []string) {
+			switch args[0] {
+			case "bash":
+				cmd.Root().GenBashCompletion(os.Stdout)
+			case "zsh":
+				cmd.Root().GenZshCompletion(os.Stdout)
+			case "fish":
+				cmd.Root().GenFishCompletion(os.Stdout, true)
+			case "powershell":
+				cmd.Root().GenPowerShellCompletion(os.Stdout)
+			}
+		},
+	}
+
+	return cmd
+}

internal/cli/root.go

@@ -58,6 +58,11 @@ func Execute() {
 	rootCmd.AddCommand(rulesCmd(cli))
 	rootCmd.AddCommand(connectionsCmd(cli))
 	rootCmd.AddCommand(tryLoginCmd(cli))
+	rootCmd.AddCommand(completionCmd(cli))
+
+	// TODO(cyx): backport this later on using latest auth0/v5.
+	// rootCmd.AddCommand(actionsCmd(cli))
+	// rootCmd.AddCommand(triggersCmd(cli))
 
 	if err := rootCmd.ExecuteContext(context.TODO()); err != nil {
 		cli.renderer.Errorf(err.Error())