#!/usr/bin/env bash
unset PATH; readonly PATH
source ./utils/main.sh

p1() {
  local input="$1" result=0

  while [[ -n "$input" ]]; do
    if [[ "$input" =~ mul\(([0-9]{1,3}),([0-9]{1,3})\) ]]; then
      result="$((result + (BASH_REMATCH[1] * BASH_REMATCH[2])))"
      input="${input#*"${BASH_REMATCH[0]}"}"
    else
      input=''
    fi
  done

  printf '%d' "$result"
}

p2() {
  local input="$1" result=0 do=true

  while [[ -n "$input" ]]; do
    if [[ "$input" =~ mul\(([0-9]{1,3}),([0-9]{1,3})\)|do\(\)|don\'t\(\) ]]; then
      case "${BASH_REMATCH[0]}" in
        do\(\)) do=true;;
        don\'t\(\)) do=false;;
        *) [[ "$do" == true ]] && result="$((result + (BASH_REMATCH[1] * BASH_REMATCH[2])))";;
      esac
      
      input="${input#*"${BASH_REMATCH[0]}"}"
    else
      input=''
    fi
  done

  printf '%d' "$result"
}

main "$@"