#!/bin/sh

pids=""

run_prog() {
    "$@" &
    pids="$! $pids"
}

trap_sig() {
    printf '%s' "$pids" | while IFS= read -r pid; do
        echo "pid=$pid"
        # shellcheck disable=2086
        kill -s $1 $pid
    done
}

trap 'trap_sig TERM' TERM

# default to every 5 minutes
DELAY="${OVHDDNS_INTERVAL_SECONDS:-300}"

stdin_content="$(cat -)"

while :; do
    echo "$stdin_content" | ovhddns "$@"
    run_prog sleep "$DELAY"
    wait $pids
    pids=
done