fake-deshuffle

#!/bin/bash

SCRIPTNAME=$(basename "$0")

fake_deshuffle_one_by_one() {
  word_len="${#string}"
  for ((j=0; j<$word_len; j++)); do
    for i in {1..5}; do
      printf "${rdm_chars:$(( RANDOM % ${#rdm_chars} )):1}"
      sleep "$speed"
      printf "\033[1D"
    done
    printf "${string:$j:1}"
  done
}

fake_deshuffle_all() {
  word_len="${#string}"
  for ((k=0; k<$word_len; k++)); do
    len_left=$((word_len-k))
    for ((i=0; i<4; i++)); do
      for ((j=0; j<$len_left; j++)); do
        printf "${ncl}${rdm_chars:$(( RANDOM % ${#rdm_chars} )):1}"
      done
      sleep "$speed"
      printf "\033[${len_left}D"
    done
    printf "${string:$k:1}"
  done
}

# Default values
default_speed="0.06"
default_rdm_chars="АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдеёжзийклмнопрстуфхцчшщъыьэюяΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρστυφχψω"

# Initialize variables
speed=$default_speed
rdm_chars=$default_rdm_chars
one_by_one=false

# Parse arguments
while getopts ":h1t:c:s:" opt; do
  case ${opt} in
    h )
      echo "Usage: $SCRIPTNAME [-1] [-t value] [-c value] -s value"
      echo "  -h               Display help"
      echo "  -1               Set one_by_one flag"
      echo "  -t value         Set speed value (default: $default_speed)"
      echo "  -c value         Set random characters to use (default: $default_rdm_chars)"
      echo "  -s value         Set string value (mandatory)"
      exit 0
      ;;
    1 )
      one_by_one=true
      ;;
    t )
      speed=$OPTARG
      ;;
    c )
      rdm_chars=$OPTARG
      ;;
    s )
      string=$OPTARG
      ;;
    \? )
      echo "Invalid option: -$OPTARG" 1>&2
      exit 1
      ;;
    : )
      echo "Invalid option: -$OPTARG requires an argument" 1>&2
      exit 1
      ;;
  esac
done

# Check if -s is provided
if [ -z "$string" ]; then
  echo "Error: -s is a mandatory argument" 1>&2
  echo "Usage: script.sh [-1] [-t value] [-c value] -s value"
  exit 1
fi

if $one_by_one; then
  fake_deshuffle_one_by_one
else
  fake_deshuffle_all
fi

printf "\n"