#!/bin/bash
# info: list system os
# options: [FORMAT]
#
# The function checks available updates for vesta packages.


#----------------------------------------------------------#
#                    Variable&Function                     #
#----------------------------------------------------------#

# Argument defenition
format=${1-shell}

# Includes
source $VESTA/func/main.sh


#----------------------------------------------------------#
#                       Action                             #
#----------------------------------------------------------#

# Check hostname
HOSTNAME=$(hostname)

# Check OS/Release
if [ -e '/etc/redhat-release' ]; then
    if [ ! -z "$(grep CentOS /etc/redhat-release)" ]; then
        OS='CentOS'
    else
        OS="RHEL"
    fi
    VERSION=$(cat /etc/redhat-release | tr ' ' '\n' |grep [0-9])
else
    if [ "$(lsb_release -si)" == "Ubuntu" ] && [ -e '/etc/debian_version' ]; then
        OS="Ubuntu"
        VERSION=$(grep DISTRIB_RELEASE /etc/lsb-release| cut -f 2 -d '=')
    else
        distro=$(head -n1 /etc/issue | cut -f 1 -d ' ')
        if [ "$distro" = 'Debian' ]; then
            OS="Debian"
            VERSION=$(cat /etc/debian_version)
        else
            OS='UNKNOWN'
            VERSION='UNKNOWN'
        fi
    fi
fi

# Check architecture
ARCH=$(arch)

# Check uptime
UPTIME=$(cat /proc/uptime |cut -f 1 -d ' '|cut -f 1 -d .)
UPTIME="$(echo $UPTIME / 60 | bc)"

# Check LoadAverage
LOADAVERAGE=$(cat /proc/loadavg |cut -f 1 -d ' ')

# Create tmp file
tmp_file=$(mktemp)

# Define key/value pairs
str="SYS='sysinfo' HOSTNAME='$HOSTNAME' OS='$OS' VERSION='$VERSION'"
str="$str ARCH='$ARCH' UPTIME='$UPTIME' LOADAVERAGE='$LOADAVERAGE'"

# Defining config
echo -e "$str" > $tmp_file
conf=$tmp_file

# Defining fileds to select
fields="\$SYS \$HOSTNAME \$OS \$VERSION \$ARCH \$UPTIME \$LOADAVERAGE"

# Listing services
case $format in
    json)   json_list ;;
    plain)  nohead=1; shell_list ;;
    shell)  fields="\$HOSTNAME \$OS \$VERSION \$ARCH \$UPTIME \$LOADAVERAGE"
            shell_list | column -t ;;
    *)      check_args '1' '0' 'USER [FORMAT]'
esac

rm -f $tmp_file

#----------------------------------------------------------#
#                       Vesta                              #
#----------------------------------------------------------#

exit