#!/bin/bash
#Displays input as if someone were typing it
SPEED=4; #default
while getopts "ms:d:" opt; do
  case $opt in
    s) SPEED=$OPTARG; toggle_speed=2;;
    m) toggle_mistakes=1;;
    d) dumbness=$OPTARG; toggle_dumbness=2;;
  esac
done
if [ $SPEED -lt 1 ] || [ $SPEED -gt 9 ]; then
  echo "Speed must be between 1 and 9.  1 is fastest, 9 is slowest"
  exit 1
fi
the_input=$*
#add options up then shift that many words to avoid printing the options
shift_amount=$(($toggle_speed + $toggle_mistakes + $toggle_dumbness))
echo $shift_amount
shift $shift_amount
the_input=$*
if [[ x"$*" == x ]]; then
  echo "
  Usage: typewriter [-ms] <number for speed> \"foo bar baz hello world etc\"
  Try 'typewriter --help' for more info.
  "
exit 1
fi
if [[ x"$*" == x--help ]] || [[ x"$*" == x--usage ]]; then
  echo "
  Usage: typewriter [OPTION...][TEXT...]
  -s <number>                      sets the typing speed, [1-9], 1 is fastest, 9 is slowest, default is 4
  "
  exit 1
fi
if [[ $toggle_mistakes == 1 ]]; then
  echo "Mistakes toggled"
fi
while [ -n "$the_input" ]
do
  number=$(($RANDOM%$SPEED))
  printf "%c" "$the_input"
  char_count=$(($char_count + 1))
  sleep .$number
  if [ $toggle_mistakes == 1 ]; then
    alphabet="abcdefghijklmnopqrstuvwxyz"
    erase_it=$'\b'
    if [[ $char_count == $dumbness ]]; then
      echo -n ${alphabet:$(($RANDOM%25)):1}
      sleep .$number
      echo -n "$erase_it${the_input:$char_count:1}$erase_it"
      char_count=0 #reset the count
    fi
  fi
  the_input=${the_input#?}
done
printf "\n"
shit