package utils

import (
	"math/rand"
	"runtime"
	"time"
)

func GetFuncName() string {
	pc := make([]uintptr, 1)
	runtime.Callers(2, pc)
	f := runtime.FuncForPC(pc[0])
	return f.Name()
}

const letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
const numLetters = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"

func RandStr(n int) string {
	rand.Seed(time.Now().UnixNano())
	b := make([]byte, n)
	for i := range b {
		b[i] = letters[rand.Int63()%int64(len(letters))]
	}
	return string(b)
}
func RandNumStr(n int) string {
	rand.Seed(time.Now().UnixNano())
	b := make([]byte, n)
	for i := range b {
		b[i] = numLetters[rand.Int63()%int64(len(letters))]
	}
	return string(b)
}

func CheckInStringList(item string, itemList []string) bool {
	for _, v := range itemList {
		if v == item {
			return true
		}
	}
	return false
}