added remove command

Signed-off-by: jasmingacic <jasmin.gacic@gmail.com>

cmd/kusk/cmd/remove_gateway.go

@@ -0,0 +1,107 @@
+/*
+The MIT License (MIT)
+
+Copyright © 2022 Kubeshop
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+.
+*/
+package cmd
+
+import (
+	"context"
+	"fmt"
+
+	kuskv1 "github.com/kubeshop/kusk-gateway/api/v1alpha1"
+	"github.com/kubeshop/kusk-gateway/cmd/kusk/internal/kuskui"
+	"github.com/kubeshop/kusk-gateway/cmd/kusk/internal/utils"
+	"github.com/manifoldco/promptui"
+	"github.com/spf13/cobra"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+)
+
+var removeGateway = &cobra.Command{
+	Use:           "remove",
+	Short:         "Removes selected instance of EnvoyFleet",
+	SilenceErrors: true,
+	SilenceUsage:  true,
+	RunE:          removeRun,
+}
+
+func init() {
+	gatewayCMD.AddCommand(removeGateway)
+	removeGateway.Flags().BoolVar(&confirm, "no-confirm", false, "uninstall without prompt")
+}
+
+func removeRun(cmd *cobra.Command, args []string) error {
+	c, err := utils.GetK8sClient()
+	if err != nil {
+		return err
+	}
+
+	fleets := &kuskv1.EnvoyFleetList{}
+	if err := c.List(context.TODO(), fleets, &client.ListOptions{}); err != nil {
+		return err
+	}
+
+	envoySelect := promptui.Select{
+		Label: "Select Gateway you want to remove",
+	}
+
+	items := []string{}
+	for _, f := range fleets.Items {
+		items = append(items, fmt.Sprintf("%s/%s", f.Namespace, f.Name))
+	}
+
+	envoySelect.Items = items
+
+	index, name, err := envoySelect.Run()
+	if err != nil {
+		return err
+	}
+	fmt.Println(name)
+	proceed := confirm
+
+	if !confirm {
+		prompt := promptui.Prompt{
+			Label:     "Removing Gateway instance will render all associated APIs unoperations. Are you sure you want to uninstall Gateway",
+			IsConfirm: true,
+		}
+		result, err := prompt.Run()
+		if err != nil {
+			return nil
+		}
+
+		if result == "N" || result == "n" || result == "" {
+			kuskui.PrintInfo("Exiting...")
+			return nil
+		}
+		proceed = true
+	}
+
+	if proceed {
+		if err := c.Delete(cmd.Context(), &fleets.Items[index], &client.DeleteAllOfOptions{}); err != nil {
+			return err
+		}
+		fmt.Printf("%s fleet removed\n", fleets.Items[index].Name)
+
+	}
+
+	return nil
+}