53 lines
1.0 KiB
Bash
Executable File
53 lines
1.0 KiB
Bash
Executable File
#!/bin/bash
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# Copyright (C) 2025 taitep
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# Part of aoctools (gitea.taitep.se/taitep/aoctools or github.com/taitep/aoctools)
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# SPDX-License-Identifier: MIT
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set -euo pipefail
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AOC_DIR="${AOC_DIR:-$HOME/.aoc}"
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CACHE_DIR="$AOC_DIR/cache"
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SESSION_FILE="$AOC_DIR/session"
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usage() {
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pname=$(basename "$0")
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echo "Usage: $pname <year> <day>" >&2
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exit 1
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}
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verify_int() {
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if ! [[ "$1" =~ ^[0-9]+$ ]]; then
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echo "'$1' is not an integer" >&2
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usage
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fi
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}
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if [ $# != 2 ]; then
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usage
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fi
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year="$1"
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day="$2"
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verify_int "$year"
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verify_int "$day"
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year_cache_dir="$CACHE_DIR/$year"
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cache_file="$year_cache_dir/d$day.in"
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mkdir -p "$year_cache_dir"
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if [ ! -f "$cache_file" ]; then
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echo "Input not cached, downloading..." >&2
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if [ ! -f "$SESSION_FILE" ]; then
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echo "Error: No session file available" >&2
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exit 1
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fi
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session="$(cat "$SESSION_FILE")"
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url="https://adventofcode.com/$year/day/$day/input"
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curl -f "$url" -o "$cache_file" -b "session=$session"
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fi
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cat "$cache_file"
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