encryptor.go

package main

import (
	"crypto/rand"
	"encoding/base32"
	"net/http"
	"strconv"

	"github.com/gin-gonic/gin"
)

func generateToken(length int) string {
	value := make([]byte, length)
	rand.Read(value)
	return base32.StdEncoding.EncodeToString(value)
}

func generateTokens(length int, amount int) []string {
	tokens := make([]string, amount)
	for i := 0; i < amount; i++ {
		tokens[i] = generateToken(length)
	}
	return tokens
}

func getAmount(c *gin.Context) int {
	amount, err := strconv.ParseInt(c.DefaultQuery("amount", "1"), 10, 32)
	if err != nil {
		c.Error(err)
	}
	return int(amount)
}

func main() {
	router := gin.Default()

	router.GET("/random", func(c *gin.Context) {
		const tokenLength = 4
		amount := getAmount(c)
		values := generateTokens(tokenLength, amount)

		c.JSON(http.StatusOK, gin.H{"values": values})
	})

	// Listen and serve on 0.0.0.0:8080
	router.Run(":8080")
}