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|
#!/usr/bin/env bash
#
# page-signal — wrap signal-cli send for paging Craig via Signal.
#
# Sends from a dedicated pager account to Craig's Signal account by
# default. Override the recipient with --to <+number-or-uuid>.
#
# Usage:
# page-signal "message" # page Craig (default recipient)
# page-signal --file path "message" # with attachment
# page-signal --to +15551234567 "msg" # override recipient (number or UUID)
# page-signal --quiet "message" # suppress success output
# page-signal --json "message" # structured output (timestamp + status)
# echo "msg" | page-signal # message from stdin (no positional)
#
# Sender account and default recipient come from PAGE_SIGNAL_ACCOUNT and
# PAGE_SIGNAL_TO; both have built-in defaults below. Requires signal-cli
# installed and registered with the sender account.
#
# Use this when desktop notifications won't reach the user — page-signal
# fires cross-device. For routine completions and periodic status pings,
# stick with `notify`; Signal is for things that need attention while away
# from the desk.
set -euo pipefail
quiet=0
json=0
file=
account="${PAGE_SIGNAL_ACCOUNT:-+15045173983}"
recipient_args=("${PAGE_SIGNAL_TO:-b1b5601e-6126-47f8-afaa-0a59f5188fde}")
message=
usage() {
sed -n '3,23p' "$0" | sed 's/^# \{0,1\}//'
}
while [ "$#" -gt 0 ]; do
case "$1" in
-h|--help)
usage
exit 0
;;
--quiet)
quiet=1
shift
;;
--json)
json=1
shift
;;
--file)
[ "$#" -ge 2 ] || { echo "page-signal: --file needs a path" >&2; exit 2; }
file="$2"
[ -f "$file" ] || { echo "page-signal: file not found: $file" >&2; exit 2; }
shift 2
;;
--to)
[ "$#" -ge 2 ] || { echo "page-signal: --to needs a +E.164 number or a Signal account UUID" >&2; exit 2; }
case "$2" in
+[0-9]*) ;;
[0-9a-fA-F]*-[0-9a-fA-F]*-[0-9a-fA-F]*) ;;
*) echo "page-signal: --to expects +E.164 (e.g. +15551234567) or a Signal account UUID" >&2; exit 2 ;;
esac
recipient_args=("$2")
shift 2
;;
--)
shift
break
;;
-*)
echo "page-signal: unknown flag: $1 (use --help)" >&2
exit 2
;;
*)
message="$1"
shift
;;
esac
done
if ! command -v signal-cli >/dev/null 2>&1; then
echo "page-signal: signal-cli not found in PATH" >&2
exit 3
fi
# Message: from positional arg, or from stdin if none given.
if [ -z "$message" ]; then
if [ -t 0 ]; then
echo "page-signal: no message (pass as arg or pipe via stdin)" >&2
exit 2
fi
message="$(cat)"
fi
# Build the send command.
cmd=(signal-cli -a "$account" send -m "$message")
if [ -n "$file" ]; then
cmd+=(-a "$file")
fi
cmd+=("${recipient_args[@]}")
# Send. Capture stderr so we can surface clean failure messages.
timestamp="$(date '+%Y-%m-%dT%H:%M:%S%z')"
if err="$("${cmd[@]}" 2>&1 >/dev/null)"; then
status=ok
else
status=fail
fi
if [ "$json" -eq 1 ]; then
printf '{"status":"%s","timestamp":"%s","recipient":"%s"' \
"$status" "$timestamp" "${recipient_args[0]}"
if [ -n "$file" ]; then
printf ',"attachment":"%s"' "$file"
fi
if [ "$status" = "fail" ]; then
printf ',"error":"%s"' "$(echo "$err" | head -1 | sed 's/"/\\"/g')"
fi
printf '}\n'
elif [ "$quiet" -eq 0 ]; then
if [ "$status" = "ok" ]; then
echo "page-signal: sent to ${recipient_args[*]} at $timestamp"
else
echo "page-signal: FAIL — $err" >&2
fi
fi
[ "$status" = "ok" ]
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