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#!/bin/bash
. lib/common
set -e
root_crontab="$SERVICE_CONFIGSTORE/etc/crontabs/root"
cron_content=$(set pipefail; cron:entries | tr '\0' '\n') || {
err "Failed to make cron entries" >&2
exit 1
}
if [ -z "${cron_content::1}" ]; then
err "Unexpected empty scheduled command list."
exit 1
fi
if [ -e "$root_crontab" ]; then
if ! [ -f "$root_crontab" ]; then
err "Destination '$root_crontab' exists and is not a file."
exit 1
fi
current_content=$(cat "$root_crontab")
if [ "$current_content" = "$cron_content" ]; then
info "Cron entry already up to date."
exit 0
fi
fi
if ! [ -d "${root_crontab%/*}" ]; then
mkdir -p "${root_crontab%/*}"
fi
printf "%s\n" "$cron_content" > "$root_crontab"
## Busybox cron uses cron.update file to rescan new cron entries
## cf: https://git.busybox.net/busybox/tree/miscutils/crond.c#n1089
touch "${root_crontab%/*}/cron.update"
info "Cron entry updated ${GREEN}successfully${NORMAL}."