go-boilerplate/front/input.go

package front

import (
	"bufio"
	"fmt"
	"os"
	"strings"

	"golang.org/x/term"
)

// Input prompts the user for input and returns the input as a string.
func Input(prompt string) string {
	fmt.Print(prompt + " ")
	reader := bufio.NewReader(os.Stdin)
	userInput, _ := reader.ReadString('\n')
	return strings.TrimRight(userInput, "\n\r ") // remove trailing newlines, carriage returns, and spaces
}

// InputHidden prompts the user for input and returns the input as a byte array, hiding the input from the terminal.
func InputHidden(prompt string) []byte {
	fmt.Print(prompt + " ")
	byteInput, _ := term.ReadPassword(int(os.Stdin.Fd()))
	fmt.Println()
	return byteInput
}

// InputBinary prompts the user with a yes/no question and returns the response as a boolean.
func InputBinary(prompt string) bool {
	reader := bufio.NewReader(os.Stdin)
	fmt.Print(prompt + " (y/N) ")
	char, _, _ := reader.ReadRune()
	if char == 'y' || char == 'Y' {
		return true
	}
	return false
}

// InputInt prompts the user for input and returns the input as an integer.
// A negative min/max value will disable the respective limit.
func InputInt(prompt string, min, max int) int {
	for {
		fmt.Print(prompt + " ")
		var userInput int
		_, err := fmt.Scanln(&userInput)
		if err == nil && (userInput >= min || min < 0) && (userInput <= max || max < 0) {
			return userInput
		}
		fmt.Println()
	}
}

// InputMenuGen prompts the user with a menu and returns the user's choice as an integer.
func InputMenuGen(prompt string, options []string) int {
	for i, option := range options {
		fmt.Printf("%d. %s\n", i+1, option)
	}
	return InputInt("\n"+prompt, 1, len(options))
}