func waitForCompletion(stack string, CloudFormation *cloudformation.CloudFormation, isDeleting bool) (string, error) {
	for {
		dres, err := CloudFormation.DescribeStacks(&cloudformation.DescribeStacksInput{
			StackName: aws.String(stack),
		})

		if err != nil {
			stdcli.Error(err)
		}

		err = displayProgress(stack, CloudFormation, isDeleting)

		if err != nil {
			stdcli.Error(err)
		}

		if len(dres.Stacks) != 1 {
			stdcli.Error(fmt.Errorf("could not read stack status"))
		}

		switch *dres.Stacks[0].StackStatus {
		case "CREATE_COMPLETE":
			// Dump .env if DEVELOPMENT
			if isDevelopment {
				fmt.Printf("Development .env:\n")

				// convert Port5432TcpAddr to PORT_5432_TCP_ADDR
				re := regexp.MustCompile("([a-z])([A-Z0-9])") // lower case letter followed by upper case or number, i.e. Port5432
				re2 := regexp.MustCompile("([0-9])([A-Z])")   // number followed by upper case letter, i.e. 5432Tcp

				for _, o := range dres.Stacks[0].Outputs {
					k := re.ReplaceAllString(*o.OutputKey, "${1}_${2}")
					k = re2.ReplaceAllString(k, "${1}_${2}")
					k = strings.ToUpper(k)

					fmt.Printf("%v=%v\n", k, *o.OutputValue)
				}
			}

			for _, o := range dres.Stacks[0].Outputs {
				if *o.OutputKey == "Dashboard" {
					return *o.OutputValue, nil
				}
			}

			return "", fmt.Errorf("could not install stack, contact [email protected] for assistance")
		case "CREATE_FAILED":
			return "", fmt.Errorf("stack creation failed, contact [email protected] for assistance")
		case "ROLLBACK_COMPLETE":
			return "", fmt.Errorf("stack creation failed, contact [email protected] for assistance")
		case "DELETE_COMPLETE":
			return "", nil
		case "DELETE_FAILED":
			return "", fmt.Errorf("stack deletion failed, contact [email protected] for assistance")
		}

		time.Sleep(2 * time.Second)
	}
}

func displayProgress(stack string, CloudFormation *cloudformation.CloudFormation, isDeleting bool) error {

	res, err := CloudFormation.DescribeStackEvents(&cloudformation.DescribeStackEventsInput{
		StackName: aws.String(stack),
	})

	if err != nil {
		return err
	}

	for _, event := range res.StackEvents {
		if events[*event.EventId] == true {
			continue
		}

		events[*event.EventId] = true

		// Log all CREATE_FAILED to display and MixPanel
		if !isDeleting && *event.ResourceStatus == "CREATE_FAILED" {
			msg := fmt.Sprintf("Failed %s: %s", *event.ResourceType, *event.ResourceStatusReason)
			fmt.Println(msg)
			sendMixpanelEvent("convox-install-error", msg)
		}

		name := friendlyName(*event.ResourceType)

		if name == "" {
			continue
		}

		switch *event.ResourceStatus {
		case "CREATE_IN_PROGRESS":
		case "CREATE_COMPLETE":
			if !isDeleting {
				id := *event.PhysicalResourceId

				if strings.HasPrefix(id, "arn:") {
					id = *event.LogicalResourceId
				}

				fmt.Printf("Created %s: %s\n", name, id)
			}
		case "CREATE_FAILED":
		case "DELETE_IN_PROGRESS":
		case "DELETE_COMPLETE":
			id := *event.PhysicalResourceId

			if strings.HasPrefix(id, "arn:") {
				id = *event.LogicalResourceId
			}

			fmt.Printf("Deleted %s: %s\n", name, id)
		case "DELETE_SKIPPED":
			id := *event.PhysicalResourceId

			if strings.HasPrefix(id, "arn:") {
				id = *event.LogicalResourceId
			}

			fmt.Printf("Skipped %s: %s\n", name, id)
		case "DELETE_FAILED":
			id := *event.PhysicalResourceId

			if strings.HasPrefix(id, "arn:") {
				id = *event.LogicalResourceId
			}

			fmt.Printf("Failed to delete %s: %s\n", name, id)
		case "ROLLBACK_IN_PROGRESS", "ROLLBACK_COMPLETE":
		case "UPDATE_IN_PROGRESS", "UPDATE_COMPLETE", "UPDATE_COMPLETE_CLEANUP_IN_PROGRESS", "UPDATE_FAILED", "UPDATE_ROLLBACK_IN_PROGRESS", "UPDATE_ROLLBACK_COMPLETE", "UPDATE_ROLLBACK_FAILED":
		default:
			return fmt.Errorf("Unhandled status: %s\n", *event.ResourceStatus)
		}
	}

	return nil
}