# ------------------------------------------------------------------------------
# Configure NTP
# This file is part of the init.sh project
# Copyright (c) 2019-2022 Geoffray Levasseur <fatalerrors@geoffray-levasseur.org>
# ------------------------------------------------------------------------------
# This file is distributed under 3-clause BSD license.
# The complete license agreement can be obtained at:
# https://opensource.org/licenses/BSD-3-Clause
# ------------------------------------------------------------------------------
# Variable:
#  * NTPSERVERS: list of NTP servers
# ------------------------------------------------------------------------------

export VER_conf_ntp="0.1.6"
export DEP_conf_ntp=""

conf_ntp()
{
    if [[ $(pidof systemd) ]]; then
	prnt I "Disabling Systemd-timesyncd..."
	systemctl disable systemd-timesyncd || true
    fi

    prnt I "Installing ntp daemon..."
    pkginst ntp
    prnt I "Stopping service ntp..."
    if [[ -n $NTP_SERV ]]; then
	svc_stop $NTP_SERV
    else
	svc_stop ntp
    fi

    if [[ -n $NTP_SERV ]]; then
	local conf_file="/etc/$NTP_SERV/ntp.conf"
    else
	local conf_file="/etc/ntp.conf"
    fi

    prnt I "Installing NTP configuration file..."
    local dest="${conf_file}.work"
    backup_dist "$conf_file"
    if [[ -s $NTP_SERV ]]; then
	install_file ${NTP_SERV}.conf "$dest"
    else
	install_file ntp.conf "$dest"
    fi
    tag_file "$dest"
    local line=""
    for srv in $NTP_SERVERS; do
	line="${line}server $srv iburst\n"
    done
    sed -i -e "s/@SERVERLIST@/$line/" "$dest" &&
	mv -fv "$dest" "$conf_file"

    prnt I "Starting service ntp..."

    if [[ -n $NTP_SERV ]]; then
	svc_start $NTP_SERV
    else
	svc_start ntp
    fi
    sleep 2 # short sleep so we're sure daemon is ready
    ntptime
}

# NTP
precheck_conf_ntp()
{
    if [[ -z $NTP_SERVERS ]]; then
	prnt E "No configured NTP server!"
	die 151
    else
	file_must_exists ntp.conf
	prnt m "The NTP servers to be used will be:"
	for srv in $NTP_SERVERS; do
	    prnt m "  * $srv"
	done
    fi
}

export -f conf_ntp
export -f precheck_conf_ntp

# EOF