Add trust-zone helm values command

This command generates the Helm values that would be applied by
cofidectl and writes them to a file or stdout.

Fixes: #11

cmd/cofidectl/cmd/trustzone/helm/helm.go

@@ -0,0 +1,121 @@
+// Copyright 2024 Cofide Limited.
+// SPDX-License-Identifier: Apache-2.0
+
+package helm
+
+import (
+	"fmt"
+	"io"
+	"os"
+
+	"github.com/spf13/cobra"
+	"gopkg.in/yaml.v3"
+
+	cmdcontext "github.com/cofide/cofidectl/cmd/cofidectl/cmd/context"
+	"github.com/cofide/cofidectl/internal/pkg/provider/helm"
+	"github.com/cofide/cofidectl/pkg/plugin"
+)
+
+type HelmCommand struct {
+	cmdCtx *cmdcontext.CommandContext
+}
+
+func NewHelmCommand(cmdCtx *cmdcontext.CommandContext) *HelmCommand {
+	return &HelmCommand{
+		cmdCtx: cmdCtx,
+	}
+}
+
+var helmRootCmdDesc = `
+This command consists of multiple sub-commands to administer Cofide trust zone Helm configuration.
+`
+
+func (c *HelmCommand) GetRootCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "helm values [ARGS]",
+		Short: "Manage trust zone Helm configuration",
+		Long:  helmRootCmdDesc,
+		Args:  cobra.NoArgs,
+	}
+
+	cmd.AddCommand(
+		c.GetValuesCommand(),
+	)
+
+	return cmd
+}
+
+var helmValuesCmdDesc = `
+This command will generate Helm values for a trust zone in the Cofide configuration state.
+`
+
+type valuesOpts struct {
+	outputPath string
+}
+
+func (c *HelmCommand) GetValuesCommand() *cobra.Command {
+	opts := valuesOpts{}
+	cmd := &cobra.Command{
+		Use:   "values [ARGS]",
+		Short: "Generate Helm values for a trust zone",
+		Long:  helmValuesCmdDesc,
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			ds, err := c.cmdCtx.PluginManager.GetDataSource()
+			if err != nil {
+				return err
+			}
+
+			values, err := c.getValues(ds, args[0])
+			if err != nil {
+				return err
+			}
+
+			var writer io.Writer
+			if opts.outputPath == "-" {
+				writer = os.Stdout
+			} else {
+				f, err := os.Create(opts.outputPath)
+				if err != nil {
+					return err
+				}
+				defer f.Close()
+				writer = f
+			}
+			if err := writeValues(values, writer); err != nil {
+				return err
+			}
+			if opts.outputPath != "-" {
+				fmt.Printf("Wrote Helm values to %s\n", opts.outputPath)
+			}
+			return nil
+		},
+	}
+
+	f := cmd.Flags()
+	f.StringVar(&opts.outputPath, "output-file", "values.yaml", "Path of a file to write YAML values to, or - for stdout")
+
+	return cmd
+}
+
+// getValues returns the Helm values for a trust zone.
+func (c *HelmCommand) getValues(ds plugin.DataSource, tzName string) (map[string]interface{}, error) {
+	trustZone, err := ds.GetTrustZone(tzName)
+	if err != nil {
+		return nil, err
+	}
+
+	generator := helm.NewHelmValuesGenerator(trustZone, ds)
+	values, err := generator.GenerateValues()
+	if err != nil {
+		return nil, err
+	}
+	return values, nil
+}
+
+// writeValues writes values in YAML format to the specified writer.
+func writeValues(values map[string]interface{}, writer io.Writer) error {
+	encoder := yaml.NewEncoder(writer)
+	defer encoder.Close()
+	return encoder.Encode(values)
+}

cmd/cofidectl/cmd/trustzone/trustzone.go

@@ -12,12 +12,13 @@ import (
 	"strconv"
 
 	cmdcontext "github.com/cofide/cofidectl/cmd/cofidectl/cmd/context"
+	"github.com/cofide/cofidectl/cmd/cofidectl/cmd/trustzone/helm"
 	"github.com/manifoldco/promptui"
 
 	trust_provider_proto "github.com/cofide/cofide-api-sdk/gen/go/proto/trust_provider/v1alpha1"
 	trust_zone_proto "github.com/cofide/cofide-api-sdk/gen/go/proto/trust_zone/v1alpha1"
 	kubeutil "github.com/cofide/cofidectl/internal/pkg/kube"
-	"github.com/cofide/cofidectl/internal/pkg/provider/helm"
+	helmprovider "github.com/cofide/cofidectl/internal/pkg/provider/helm"
 	"github.com/cofide/cofidectl/internal/pkg/spire"
 	cofidectl_plugin "github.com/cofide/cofidectl/pkg/plugin"
 	"github.com/olekukonko/tablewriter"
@@ -47,10 +48,13 @@ func (c *TrustZoneCommand) GetRootCommand() *cobra.Command {
 		Args:  cobra.NoArgs,
 	}
 
+	helmCmd := helm.NewHelmCommand(c.cmdCtx)
+
 	cmd.AddCommand(
 		c.GetListCommand(),
 		c.GetAddCommand(),
 		c.GetStatusCommand(),
+		helmCmd.GetRootCommand(),
 	)
 
 	return cmd
@@ -204,7 +208,7 @@ func (c *TrustZoneCommand) status(ctx context.Context, source cofidectl_plugin.D
 		return err
 	}
 
-	prov, err := helm.NewHelmSPIREProvider(ctx, trustZone, nil, nil)
+	prov, err := helmprovider.NewHelmSPIREProvider(ctx, trustZone, nil, nil)
 	if err != nil {
 		return err
 	}

go.mod

@@ -17,6 +17,7 @@ require (
 	github.com/stretchr/testify v1.9.0
 	google.golang.org/grpc v1.67.1
 	google.golang.org/protobuf v1.35.1
+	gopkg.in/yaml.v3 v3.0.1
 	helm.sh/helm/v3 v3.16.1
 )
 
@@ -161,7 +162,6 @@ require (
 	gopkg.in/evanphx/json-patch.v4 v4.12.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
-	gopkg.in/yaml.v3 v3.0.1 // indirect
 	gotest.tools/v3 v3.5.0 // indirect
 	k8s.io/api v0.31.1
 	k8s.io/apiextensions-apiserver v0.31.0 // indirect