Watch the Ukrainian CVK website and send push notifications

push

#!/bin/sh -eu
ENDPOINT="https://middleman.ferdinand-muetsch.de/api/messages"

if [ "$#" -ne 2 ]; then
	echo "usage: $0 TOKEN ORIGIN" >&2
	exit 1
fi

jq -ac --unbuffered --arg token "$1" --arg origin "$2" \
   '{"recipient_token": $token, "text": ., "origin": $origin}' | \
while read -r json; do
	curl -sSL -X POST -H 'Content-Type: application/json' -d "$json" -- "$ENDPOINT"
done

pushcvk

#!/bin/sh -eu

"$(dirname "$0")/watchcvk" "$2" ${3-} | \
jq -c --unbuffered --arg url "$2" \
   '"Data at \($url) changed:\n\n```html\n\(.)```"' | \
push "$1" PushCVK

watchcvk

#!/bin/sh -eu
set -o pipefail

prev=; data=
trap 'rm -f "$prev" "$data"' EXIT
prev=$(mktemp); data=$(mktemp)

touch -- "$prev"
while true; do
	curl -sSL -- "$1" | iconv -f cp1251 | \
	hq 'main > *:not(.noprint)' data >"$data"
	if diff -q "$prev" "$data" >/dev/null; then :; else
		jq -Rsc --unbuffered . <"$data"
		mv "$data" "$prev"
	fi
	sleep "${2-60}"
done