Add key action for + to do kubectl apply -f

Signed-off-by: Xiaodong Ye <[email protected]>

internal/ui/key.go

@@ -10,6 +10,7 @@ func initKeys() {
 	tcell.KeyNames[KeyHelp] = "?"
 	tcell.KeyNames[KeySlash] = "/"
 	tcell.KeyNames[KeySpace] = "space"
+	tcell.KeyNames[KeyPlus] = "+"
 
 	initNumbKeys()
 	initStdKeys()
@@ -77,6 +78,7 @@ const (
 	KeySlash = 47
 	KeyColon = 58
 	KeySpace = 32
+	KeyPlus  = 43
 )
 
 // Define Shift Keys.

internal/view/browser.go

@@ -1,8 +1,11 @@
 package view
 
 import (
+	"bytes"
 	"context"
+	"errors"
 	"fmt"
+	"os"
 	"sort"
 	"strconv"
 	"strings"
@@ -20,6 +23,7 @@ import (
 	"github.com/derailed/tcell/v2"
 	"github.com/rs/zerolog/log"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/kubectl/pkg/cmd/util/editor"
 )
 
 // Browser represents a generic resource browser.
@@ -359,6 +363,52 @@ func (b *Browser) describeCmd(evt *tcell.EventKey) *tcell.EventKey {
 	return nil
 }
 
+func (b *Browser) applyCmd(evt *tcell.EventKey) *tcell.EventKey {
+	b.Stop()
+	defer b.Start()
+	{
+		a := b.app
+		a.Halt()
+		defer a.Resume()
+
+		var data []byte
+		var path string
+		var err error
+
+		if !a.Suspend(func() {
+			edit := editor.NewDefaultEditor([]string{})
+			buf := &bytes.Buffer{}
+			data, path, err = edit.LaunchTempFile("kubectl-apply-", ".yaml", buf)
+		}) {
+			time.AfterFunc(200*time.Millisecond, func() {
+				a.Flash().Err(errors.New("failed to suspend the application"))
+			})
+			return nil
+		}
+
+		defer os.Remove(path)
+		if err != nil {
+			time.AfterFunc(200*time.Millisecond, func() {
+				a.Flash().Errf("failed to edit a temporary file: %s", err)
+			})
+		} else if len(data) > 0 {
+			args := make([]string, 0, 10)
+			args = append(args, "apply", "-f", path)
+			if err := runK(a, shellOpts{clear: true, args: args}); err != nil {
+				time.AfterFunc(200*time.Millisecond, func() {
+					a.Flash().Errf("failed to apply resource: %s", err)
+				})
+			} else {
+				time.AfterFunc(200*time.Millisecond, func() {
+					a.Flash().Info("Resource applied successfully!")
+				})
+			}
+		}
+	}
+
+	return evt
+}
+
 func (b *Browser) editCmd(evt *tcell.EventKey) *tcell.EventKey {
 	path := b.GetSelectedItem()
 	if path == "" {
@@ -481,6 +531,7 @@ func (b *Browser) refreshActions() {
 			if client.Can(b.meta.Verbs, "delete") {
 				aa[tcell.KeyCtrlD] = ui.NewKeyAction("Delete", b.deleteCmd, true)
 			}
+			aa[ui.KeyPlus] = ui.NewKeyAction("Apply", b.applyCmd, true)
 		}
 	}