#!/bin/sh
#
# Description: Display stats on jails (size, last connection…)
# Usage: stats
#

# shellcheck source=./includes
LIBDIR="$(dirname $0)" && . "${LIBDIR}/includes"

mkdir -p "${INDEX_DIR}"

lsof "${IDX_FILE}" >/dev/null 2>&1 || nohup sh -s -- <<EOF >/dev/null 2>&1 &

ionice -c3 "${DUC}" index -d "${IDX_FILE}" "${JAILDIR}"
touch "${INDEX_DIR}/.lastrun.duc"
EOF

[ ! -f "${INDEX_DIR}/.lastrun.duc" ] && notice "First run of DUC still in progress ..." && exit 0
[ ! -f ${IDX_FILE} ] && error "Index file doesn't exits !"

printf "Last update of index file : "
stat --format=%Y "${INDEX_DIR}/.lastrun.duc" | xargs -i -n1 date -R -d "@{}"

duc_output=$(mktemp)
stat_output=$(mktemp)
incs_output=$(mktemp)
jail_patterns_list=$(mktemp)

# shellcheck disable=SC2064
trap "rm ${duc_output} ${incs_output} ${stat_output} ${jail_patterns_list}" 0

"${DUC}" ls --database "${IDX_FILE}" "${JAILDIR}" > "${duc_output}"

jails_list | sed -e "s/^\(.*\)$/\\\\b\1\\\\b/" > "${jail_patterns_list}"

grep -f "${jail_patterns_list}" "${duc_output}" | awk '{ print $2 }' | while read jail_name; do
    jail_path=$(jail_path "${jail_name}")
    stat --format=%Y "${jail_path}/var/log/lastlog" | xargs -i -n1 date -d "@{}" "+%d-%m-%Y" >> "${stat_output}"

    incs_policy_file=$(current_jail_incs_policy_file "${jail_name}")
    incs_policy="0"
    if [ -r "${incs_policy_file}" ]; then
        days=$(grep "^\+" "${incs_policy_file}" | grep --count "day")
        months=$(grep "^\+" "${incs_policy_file}" | grep --count "month")
        incs_policy="${days}/${months}"
    fi
    echo "${incs_policy}" >> "${incs_output}"
done

(
    echo "<jail> <size> <incs> <lastconn>"
    paste "${duc_output}" "${incs_output}" "${stat_output}" | awk '{ printf("%s %s %s %s\n", $2, $1, $3, $4); }'
) | column -t