get_input

#!/bin/bash
export TZ="America/New_York"
[ "$(date +%m)" -eq 12 ] || exit
cd "$(dirname "$0")" || exit

. .env

if [[ ! -v SESSION ]]; then echo "Create .env with SESSION"; exit; fi;

# Usage:
#  $ ./get_input [day]
# * day: day to fetch (default: today in EST)

# SESSION must be filled in below
# Run this manually once per day to fetch input

# Finding SESSION with Chrome (get value of adeventofcode.com session cookie)
# 1. Go to any https://adventofcode.com page while signed in
# 2. F12 -> Application -> Storage -> Cookies -> https://adventofcode.com
# 3. Copy value of 'session' cookie
# 4. Create .env in this directory containing: SESSION="session_Cookie_value_HERE"

#https://www.reddit.com/r/adventofcode/comments/z9dhtd/please_include_your_contact_info_in_the_useragent/
ua="https://github.com/Fragger/advent-of-code/blob/master/get_input by wonderfulweb@gmail.com"

year=$(date +%Y)
day=$((10#${1:-$(date +%d)}))
printf -v padDay %02d "$day"

if ! [ -f "$padDay" ]; then
	curl "https://adventofcode.com/$year/day/$day/input" --cookie "session=$SESSION" -A "$ua" -o "$padDay"
fi
head "$padDay"