A function for CLI prompt options

promptoptions.go

package clistuff

import (
	"bufio"
	"fmt"
	"net/url"
	"os"
	"strings"
)

type PromptOptions struct {
	Choices       []string
	SecretChoices []string
	PromptMsg     string
	FailMsg       string
}

func Prompt(options PromptOptions) string {
	result := ""
	scanner := bufio.NewScanner(os.Stdin)
	inputText := fmt.Sprintf("%v {%v}: ", options.PromptMsg, strings.Join(options.Choices, ","))
	fmt.Print(inputText)
scanLoop:
	for scanner.Scan() {
		text := scanner.Text()
		for _, choice := range options.Choices {
			if text == choice {
				result = choice
				break scanLoop
			}
		}
		for _, choice := range options.SecretChoices {
			if text == choice {
				result = choice
				break scanLoop
			}
		}
		fmt.Println(options.FailMsg)
		fmt.Print(inputText)
	}
	return result
}

func MustURL(rawURL string) *url.URL {
	result, err := url.Parse(rawURL)
	if err != nil {
		panic(err)
	}
	return result
}