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#!/bin/sh -eu
# vim: sw=2 et
COOKIES="${HOME}/.adventofcode.json"
YEAR=${YEAR:-$(date +%Y)}
DAY=${DAY:-$(TZ=EST date '+%d')}
DEC=$(echo "${DAY}" | sed 's/^0//')
MODE="wget"
# https://stackoverflow.com/q/21919156/how-do-i-copy-cookies-from-chrome
SESSION=$(jq < "${COOKIES}" '."session-cookie"')
check_dependency_availability() {
local bin
for bin in 'elinks' \
'jq' \
'wget'
do
if ! which "${bin}" >/dev/null; then
echo "Missing dependency: ${bin}" >&2
exit 1
fi
done
}
concat() {
local part
for part in "$@"; do
printf '%s' "${part}"
done
}
authenticated_wget() {
wget \
--server-response \
--header "Cookie: session=${SESSION}" \
"${@}"
}
check_dependency_availability
if [ "${MODE}" = 'wget' ]; then
cd "${YEAR}"
cd 'rust'
mkdir "day${DAY}" || :
cd "day${DAY}"
# https://stackoverflow.com/q/21919156/how-do-i-copy-cookies-from-chrome
SESSION=$(jq < "${COOKIES}" '."session-cookie"' | tr -d '"')
if [ -e "input" ]; then
echo 'Directory input already exists. Skipping.'
else
mkdir 'input'
authenticated_wget --output-document "input/page_${DEC}.html" \
"https://adventofcode.com/${YEAR}/day/${DEC}"
SETTINGS=$(authenticated_wget --output-document='-' \
"https://adventofcode.com/${YEAR}/settings")
USERNAME=$(echo "${SETTINGS}" |
sed -n 's#.*display_name.*checked.*<span>\(.*\)</span>.*#\1#p')
echo "Found username: ${USERNAME}"
authenticated_wget --output-document "input/${USERNAME}" \
"https://adventofcode.com/${YEAR}/day/${DEC}/input"
elinks -dump "./input/page_${DEC}.html" >"input/page_${DEC}.txt"
sed -n 's/^ \([^ ]\)/\1/p' <"input/page_${DEC}.txt" >"input/example.txt"
fi
elif [ "${MODE}" = 'aocdl' ]; then
# One could possibly use the golang implemenation instead of wget:
# https://github.com/GreenLightning/advent-of-code-downloader
#
# It has more features, but it is always a hassle to install extra things.
#
# go get github.com/GreenLightning/advent-of-code-downloader/aocdl
~/.go/bin/aocdl -output "{{.Year}}/rust/{{.Day}}"
fi
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