Merge pull request #142 from commitdev/prompt-user-for-apply-environm…

…ents

#133 : Prompt the user for which environments to apply against

cmd/apply.go

@@ -1,14 +1,21 @@
 package cmd
 
 import (
+	"fmt"
+	"log"
+
 	"github.com/commitdev/zero/configs"
+	"github.com/commitdev/zero/pkg/util/exit"
+	"github.com/manifoldco/promptui"
 	"github.com/spf13/cobra"
 )
 
 var applyConfigPath string
+var applyEnvironments []string
 
 func init() {
 	applyCmd.PersistentFlags().StringVarP(&applyConfigPath, "config", "c", configs.ZeroProjectYml, "config path")
+	applyCmd.PersistentFlags().StringSliceVarP(&applyEnvironments, "env", "e", []string{}, "environments to set up (staging, production) - specify multiple times for multiple")
 
 	rootCmd.AddCommand(applyCmd)
 }
@@ -18,5 +25,45 @@ var applyCmd = &cobra.Command{
 	Short: "Execute modules to create projects, infrastructure, etc.",
 	Run: func(cmd *cobra.Command, args []string) {
 
+		if len(applyEnvironments) == 0 {
+			fmt.Println(`Choose the environments to apply. This will create infrastructure, CI pipelines, etc.
+At this point, real things will be generated that may cost money!
+Only a single environment may be suitable for an initial test, but for a real system we suggest setting up both staging and production environments.`)
+			applyEnvironments = promptEnvironments()
+		}
+
+		// Strict for now, we can brainstorm how much we want to support custom environments later
+		for _, env := range applyEnvironments {
+			if env != "staging" && env != "production" {
+				exit.Fatal("The currently supported environments are \"staging\" and \"production\"")
+			}
+		}
+
+		// @TODO : Pass environments to make commands
 	},
 }
+
+// promptEnvironments Prompts the user for the environments to apply against and returns a slice of strings representing the environments
+func promptEnvironments() []string {
+	items := map[string][]string{
+		"Staging ":                    []string{"staging"},
+		"Production":                  []string{"production"},
+		"Both Staging and Production": []string{"staging", "production"},
+	}
+
+	var labels []string
+	for label := range items {
+		labels = append(labels, label)
+	}
+
+	providerPrompt := promptui.Select{
+		Label: "Environments",
+		Items: labels,
+	}
+	_, providerResult, err := providerPrompt.Run()
+	if err != nil {
+		log.Fatalf("Prompt failed %v\n", err)
+		panic(err)
+	}
+	return items[providerResult]
+}