#!/bin/env fish

set path "$argv[1]"

grep -Po 'mul\((\d+,\d+)\)' "$path" |
	awk -F'[,()]' ' \
		    { sum += $2 * $3 } \
		END { print "Part one " sum } \
	'

grep -Po "(mul\((\d+,\d+)\))|(do\(\))|(don't\(\))" "$path" |
	awk -F'[,()]' ' \
		BEGIN          { e = 1 } \
		$1 == "do"     { e = 1 } \
		$1 == "don\'t" { e = 0 } \
		               { sum += e * ($2 * $3) } \
		END            { print "Part two " sum } \
	'