feat(iam): auto-complete permission-set names (#2472)

internal/namespaces/iam/v1alpha1/custom.go

@@ -4,6 +4,8 @@ import (
 	"context"
 
 	"github.com/scaleway/scaleway-cli/v2/internal/core"
+	iam "github.com/scaleway/scaleway-sdk-go/api/iam/v1alpha1"
+	"github.com/scaleway/scaleway-sdk-go/scw"
 )
 
 func GetCommands() *core.Commands {
@@ -21,6 +23,27 @@ func GetCommands() *core.Commands {
 		cmds.MustFind(commandPath...).Override(setOrganizationDefaultValue)
 	}
 
+	// Autocomplete permission set names using IAM API.
+	cmds.MustFind("iam", "policy", "create").Override(func(c *core.Command) *core.Command {
+		c.ArgSpecs.GetByName("rules.{index}.permission-set-names.{index}").AutoCompleteFunc = func(ctx context.Context, prefix string) core.AutocompleteSuggestions {
+			client := core.ExtractClient(ctx)
+			api := iam.NewAPI(client)
+			// TODO: store result in a CLI cache
+			resp, err := api.ListPermissionSets(&iam.ListPermissionSetsRequest{
+				PageSize: scw.Uint32Ptr(100),
+			}, scw.WithAllPages())
+			if err != nil {
+				return nil
+			}
+			suggestions := core.AutocompleteSuggestions{}
+			for _, ps := range resp.PermissionSets {
+				suggestions = append(suggestions, ps.Name)
+			}
+			return suggestions
+		}
+		return c
+	})
+
 	return cmds
 }