chore: give user upgrade command when checking for updates

internal/cli/check.go

@@ -3,6 +3,7 @@ package cli
 import (
 	"context"
 	"fmt"
+	"os"
 	"strings"
 
 	"github.com/futurice/jalapeno/internal/cli/option"
@@ -105,27 +106,37 @@ func runCheck(cmd *cobra.Command, opts checkOptions) error {
 
 	cmd.Println("Checking for new versions...")
 
-	updatesAvailable, errorsFound := false, false
+	errorsFound := false
+	upgradeCommands := make([]string, 0, len(sauces))
 	for _, sauce := range sauces {
 		versions, err := recipeutil.CheckForUpdates(sauce, opts.OCIRepository)
 		if err != nil {
 			errorsFound = true
 			cmd.Printf("%s: can not check for updates: %s\n", sauce.Recipe.Name, err)
 
 		} else if len(versions) > 0 {
-			updatesAvailable = true
 			cmd.Printf("%s: new versions found: %s\n", sauce.Recipe.Name, strings.Join(versions, ", "))
+			upgradeCommands = append(upgradeCommands,
+				fmt.Sprintf("%s upgrade %s:%s", os.Args[0], sauce.CheckFrom, versions[len(versions)-1]),
+			)
 
 		} else {
 			cmd.Printf("%s: no new versions found\n", sauce.Recipe.Name)
 		}
 	}
 
+	if len(upgradeCommands) > 0 {
+		cmd.Println("To upgrade recipes to the latest version run:")
+		for _, cmdMsg := range upgradeCommands {
+			cmd.Printf("  %s\n", cmdMsg)
+		}
+	}
+
 	var exitCode int
 	switch {
 	case errorsFound:
 		exitCode = ExitCodeError
-	case updatesAvailable && opts.UseDetailedExitCode:
+	case len(upgradeCommands) > 0 && opts.UseDetailedExitCode:
 		exitCode = ExitCodeUpdatesAvailable
 	default:
 		exitCode = ExitCodeOK

test/check-recipes.feature

@@ -13,6 +13,7 @@ Feature: Check for new recipe versions
     And I push the recipe "foo" to the local OCI repository
     And I check new versions for recipe "foo"
     Then CLI produced an output "new versions found: v0.0.2"
+    Then CLI produced an output "To upgrade recipes to the latest version run:\n  (.*) upgrade oci://localhost:\d+/foo:v0.0.2\n"
 
   Scenario: Find multiple newer version for a recipe
     Given a project directory
@@ -30,6 +31,7 @@ Feature: Check for new recipe versions
     And I push the recipe "foo" to the local OCI repository
     Then I check new versions for recipe "foo"
     Then CLI produced an output "new versions found: v0.0.2, v0.0.3"
+    Then CLI produced an output "To upgrade recipes to the latest version run:\n  (.*) upgrade oci://localhost:\d+/foo:v0.0.3\n"
 
   Scenario: Find newer version for multiple recipes
     Given a project directory