feat: show undploy overview

cli/app/deploy.go

@@ -123,7 +123,7 @@ recipes.
 			logrus.Fatal(err)
 		}
 
-		if err := DeployOverview(app, version); err != nil {
+		if err := DeployOverview(app, version, "continue with deployment?"); err != nil {
 			logrus.Fatal(err)
 		}
 
@@ -148,7 +148,7 @@ recipes.
 }
 
 // DeployOverview shows a deployment overview
-func DeployOverview(app config.App, version string) error {
+func DeployOverview(app config.App, version, message string) error {
 	tableCol := []string{"server", "compose", "domain", "stack", "version"}
 	table := abraFormatter.CreateTable(tableCol)
 
@@ -167,7 +167,7 @@ func DeployOverview(app config.App, version string) error {
 
 	response := false
 	prompt := &survey.Confirm{
-		Message: "continue with deployment?",
+		Message: message,
 	}
 
 	if err := survey.AskOne(prompt, &response); err != nil {

cli/app/undeploy.go

@@ -22,12 +22,28 @@ volumes as eligiblef or pruning once undeployed.
 `,
 	Action: func(c *cli.Context) error {
 		app := internal.ValidateApp(c)
+		stackName := app.StackName()
 
 		cl, err := client.New(app.Server)
 		if err != nil {
 			logrus.Fatal(err)
 		}
 
+		logrus.Debugf("checking whether '%s' is already deployed", stackName)
+
+		isDeployed, deployedVersion, err := stack.IsDeployed(c.Context, cl, stackName)
+		if err != nil {
+			logrus.Fatal(err)
+		}
+
+		if !isDeployed {
+			logrus.Fatalf("'%s' is not deployed?", stackName)
+		}
+
+		if err := DeployOverview(app, deployedVersion, "continue with undeploy?"); err != nil {
+			logrus.Fatal(err)
+		}
+
 		rmOpts := stack.Remove{Namespaces: []string{app.StackName()}}
 		if err := stack.RunRemove(c.Context, cl, rmOpts); err != nil {
 			logrus.Fatal(err)