Move cli/cmd into cli/internal

cli/internal/cmd/validargs.go

@@ -0,0 +1,71 @@
+package cmd
+
+import (
+	"errors"
+	"fmt"
+	"net"
+	"strconv"
+	"strings"
+
+	"github.com/edgelesssys/constellation/cli/internal/azure"
+	"github.com/edgelesssys/constellation/cli/internal/gcp"
+	"github.com/edgelesssys/constellation/internal/cloud/cloudprovider"
+	"github.com/spf13/cobra"
+)
+
+// warnAWS warns that AWS isn't supported.
+func warnAWS(providerPos int) cobra.PositionalArgs {
+	return func(cmd *cobra.Command, args []string) error {
+		if cloudprovider.FromString(args[providerPos]) == cloudprovider.AWS {
+			return errors.New("AWS isn't supported by this version of Constellation")
+		}
+		return nil
+	}
+}
+
+func isCloudProvider(arg int) cobra.PositionalArgs {
+	return func(cmd *cobra.Command, args []string) error {
+		if provider := cloudprovider.FromString(args[arg]); provider == cloudprovider.Unknown {
+			return fmt.Errorf("argument %s isn't a valid cloud provider", args[arg])
+		}
+		return nil
+	}
+}
+
+func validInstanceTypeForProvider(cmd *cobra.Command, insType string, provider cloudprovider.Provider) error {
+	switch provider {
+	case cloudprovider.GCP:
+		for _, instanceType := range gcp.InstanceTypes {
+			if insType == instanceType {
+				return nil
+			}
+		}
+		cmd.SetUsageTemplate("GCP instance types:\n" + formatInstanceTypes(gcp.InstanceTypes))
+		cmd.SilenceUsage = false
+		return fmt.Errorf("%s isn't a valid GCP instance type", insType)
+	case cloudprovider.Azure:
+		for _, instanceType := range azure.InstanceTypes {
+			if insType == instanceType {
+				return nil
+			}
+		}
+		cmd.SetUsageTemplate("Azure instance types:\n" + formatInstanceTypes(azure.InstanceTypes))
+		cmd.SilenceUsage = false
+		return fmt.Errorf("%s isn't a valid Azure instance type", insType)
+	default:
+		return fmt.Errorf("%s isn't a valid cloud platform", provider)
+	}
+}
+
+func validateEndpoint(endpoint string, defaultPort int) (string, error) {
+	_, _, err := net.SplitHostPort(endpoint)
+	if err == nil {
+		return endpoint, nil
+	}
+
+	if strings.Contains(err.Error(), "missing port in address") {
+		return net.JoinHostPort(endpoint, strconv.Itoa(defaultPort)), nil
+	}
+
+	return "", err
+}