refactor: vertical deploy overview

cli/app/rollback.go

@@ -47,6 +47,8 @@ EXAMPLE:
     abra app rollback foo.example.com 1.2.3+3.2.1`,
 	BashComplete: autocomplete.AppNameComplete,
 	Action: func(c *cli.Context) error {
+		var warnMessages []string
+
 		app := internal.ValidateApp(c)
 		stackName := app.StackName()
 
@@ -82,7 +84,7 @@ EXAMPLE:
 		var availableDowngrades []string
 		if deployMeta.Version == "unknown" {
 			availableDowngrades = versions
-			log.Warnf("failed to determine deployed version of %s", app.Name)
+			warnMessages = append(warnMessages, fmt.Sprintf("failed to determine deployed version of %s", app.Name))
 		}
 
 		specificVersion := c.Args().Get(1)
@@ -113,7 +115,7 @@ EXAMPLE:
 
 		if deployMeta.Version != "unknown" && specificVersion == "" {
 			if deployMeta.IsChaos {
-				log.Warn("attempting to rollback a chaos deployment")
+				warnMessages = append(warnMessages, fmt.Sprintf("attempting to rollback a chaos deployment"))
 			}
 
 			for _, version := range versions {
@@ -203,7 +205,14 @@ EXAMPLE:
 		}
 
 		// NOTE(d1): no release notes implemeneted for rolling back
-		if err := internal.NewVersionOverview(app, deployMeta.Version, chaosVersion, chosenDowngrade, ""); err != nil {
+		if err := internal.NewVersionOverview(
+			app,
+			warnMessages,
+			"rollback",
+			deployMeta.Version,
+			chaosVersion,
+			chosenDowngrade,
+			""); err != nil {
 			log.Fatal(err)
 		}