Eric WagonerandClaude Opus 5.5
96ec6861d5
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Jm2auWk6RP71CjaAb4FMoG
41 lines
1.6 KiB
Bash
41 lines
1.6 KiB
Bash
#!/usr/bin/env bash
|
|
# The notice every game of Kestrel's Hall shows at the top of its pages.
|
|
# Each site serves /var/lib/hall/announcement.json at /hall/announcement.json;
|
|
# a page checks it on load and every few minutes. Run on the host as root:
|
|
# hall-announce "Kestrel's Hall is down for five minutes of maintenance" --at "2026-09-30 11:00 UTC" [--until "2026-09-30 11:15 UTC"]
|
|
# hall-announce --show
|
|
# hall-announce --clear
|
|
# --at is when it happens, told in each reader's own time; --until is when the
|
|
# notice stops showing (an hour after --at when not given).
|
|
set -euo pipefail
|
|
FILE=/var/lib/hall/announcement.json
|
|
|
|
case "${1:-}" in
|
|
--clear) rm -f "$FILE"; echo "cleared."; exit 0 ;;
|
|
--show) cat "$FILE" 2>/dev/null || echo "no announcement."; exit 0 ;;
|
|
''|-*) sed -n '2,9p' "$0" | sed 's/^# \{0,1\}//'; exit 2 ;;
|
|
esac
|
|
|
|
TEXT="$1"; shift
|
|
AT=""; UNTIL=""
|
|
while [ $# -gt 0 ]; do
|
|
case "$1" in
|
|
--at) AT="$(date -u -d "$2" +%Y-%m-%dT%H:%M:%SZ)"; shift 2 ;;
|
|
--until) UNTIL="$(date -u -d "$2" +%Y-%m-%dT%H:%M:%SZ)"; shift 2 ;;
|
|
*) echo "unknown option: $1" >&2; exit 2 ;;
|
|
esac
|
|
done
|
|
[ -n "$AT" ] && [ -z "$UNTIL" ] && UNTIL="$(date -u -d "$AT + 1 hour" +%Y-%m-%dT%H:%M:%SZ)"
|
|
|
|
mkdir -p "$(dirname "$FILE")"
|
|
# A new id each time, so a reader who dismissed the last notice still sees this one.
|
|
TEXT="$TEXT" AT="$AT" UNTIL="$UNTIL" ID="$(date -u +%Y%m%dT%H%M%S)" python3 -c '
|
|
import json, os
|
|
a = {"id": os.environ["ID"], "text": os.environ["TEXT"]}
|
|
if os.environ["AT"]: a["at"] = os.environ["AT"]
|
|
if os.environ["UNTIL"]: a["until"] = os.environ["UNTIL"]
|
|
print(json.dumps(a))' > "$FILE.tmp"
|
|
chmod 644 "$FILE.tmp"
|
|
mv "$FILE.tmp" "$FILE"
|
|
cat "$FILE"
|