Move cli/cmd into cli/internal

cli/internal/cmd/configgenerate.go

@@ -0,0 +1,81 @@
+package cmd
+
+import (
+	"github.com/edgelesssys/constellation/internal/cloud/cloudprovider"
+	"github.com/edgelesssys/constellation/internal/config"
+	"github.com/edgelesssys/constellation/internal/constants"
+	"github.com/edgelesssys/constellation/internal/file"
+	"github.com/spf13/afero"
+	"github.com/spf13/cobra"
+	"github.com/talos-systems/talos/pkg/machinery/config/encoder"
+)
+
+func newConfigGenerateCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "generate {aws|azure|gcp}",
+		Short: "Generate a default configuration file",
+		Long:  "Generate a default configuration file for your selected cloud provider.",
+		Args: cobra.MatchAll(
+			cobra.ExactArgs(1),
+			isCloudProvider(0),
+			warnAWS(0),
+		),
+		ValidArgsFunction: generateCompletion,
+		RunE:              runConfigGenerate,
+	}
+	cmd.Flags().StringP("file", "f", constants.ConfigFilename, "path to output file, or '-' for stdout")
+
+	return cmd
+}
+
+type generateFlags struct {
+	file string
+}
+
+func runConfigGenerate(cmd *cobra.Command, args []string) error {
+	fileHandler := file.NewHandler(afero.NewOsFs())
+	provider := cloudprovider.FromString(args[0])
+	return configGenerate(cmd, fileHandler, provider)
+}
+
+func configGenerate(cmd *cobra.Command, fileHandler file.Handler, provider cloudprovider.Provider) error {
+	flags, err := parseGenerateFlags(cmd)
+	if err != nil {
+		return err
+	}
+
+	conf := config.Default()
+	conf.RemoveProviderExcept(provider)
+
+	if flags.file == "-" {
+		content, err := encoder.NewEncoder(conf).Encode()
+		if err != nil {
+			return err
+		}
+		_, err = cmd.OutOrStdout().Write(content)
+		return err
+	}
+
+	return fileHandler.WriteYAML(flags.file, conf, 0o644)
+}
+
+func parseGenerateFlags(cmd *cobra.Command) (generateFlags, error) {
+	file, err := cmd.Flags().GetString("file")
+	if err != nil {
+		return generateFlags{}, err
+	}
+	return generateFlags{
+		file: file,
+	}, nil
+}
+
+// createCompletion handles the completion of the create command. It is frequently called
+// while the user types arguments of the command to suggest completion.
+func generateCompletion(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+	switch len(args) {
+	case 0:
+		return []string{"aws", "gcp", "azure"}, cobra.ShellCompDirectiveNoFileComp
+	default:
+		return []string{}, cobra.ShellCompDirectiveError
+	}
+}