#!/usr/bin/env bash

Y="$1"; shift
if [ -z "$Y" ]; then
	Y="$(date +%Y)"
fi

fday="$1"; shift
tday="$1"; shift

if [ -z "$fday" ]; then
	fday=1
	tday=25
fi
if [ -z "$tday" ]; then
	tday="${fday}"
fi

days=($(seq $fday $tday))

if ! grep -q "Y${Y}" src/AoC/Year.hs; then
	sed -i -e "s/\(\(\s\+\)= Y0000\)/\1\n\2| Y${Y}/" src/AoC/Year.hs
fi

mkdir -p "src/AoC/Y${Y}"
if ! test -f "src/AoC/Y${Y}.hs"; then
	sed -e "s/Y0000/Y${Y}/g" template/Y0000.hs > "src/AoC/Y${Y}.hs"
fi

for d in "${days[@]}"; do
	d=$(printf "%02d" "$d")
	mkdir -p "data/Y${Y}/D${d}"
	touch "data/Y${Y}/D${d}/riddle"
	touch "data/Y${Y}/D${d}/result"

	if ! test -f "src/AoC/Y${Y}/D${d}.hs"; then
		sed -e "s/Y0000/Y${Y}/g" -e "s/D00/D${d}/g" template/D00.hs > "src/AoC/Y${Y}/D${d}.hs"
	fi
done