#!/bin/bash

function set_if_conf {
    echo
    echo -n "Should we use DHCP for that interface (Y/n)?";read -n 1 dhcpsw
    if [[ $dhcpsw == "n" || $dhcpsw == "N" ]]; then
        echo
        echo -n "Enter ip: "; read ${intf}_ip;
        echo -n "Enter netmask: "; read ${intf}_mask
        echo -n "Enter default gw: "; read ${intf}_gw
        echo -n "Enter First DNS server: "; read ${intf}_dns1
        echo -n "Enter Second DNS server: "; read ${intf}_dns2
    else
        eval ${intf}_ip="";eval ${intf}_mask="";eval ${intf}_gw="";eval ${intf}_dns1="";eval ${intf}_dns2=""
    fi
    echo
}

function save_if_cfg {
    scrFile="/etc/sysconfig/network-scripts/ifcfg-$device"
    hwaddr=`ifconfig $device | grep -i hwaddr | sed -e 's#^.*hwaddr[[:space:]]*##I'`
    [ -z $gw ] || echo GATEWAY=$gw >> /etc/sysconfig/network
    echo DEVICE=$device > $scrFile
    echo ONBOOT=yes >> $scrFile
    echo NM_CONTROLLED=no >> $scrFile
    echo HWADDR=$hwaddr >> $scrFile
    echo USERCTL=no >> $scrFile
    if [ $ip ]; then
        echo BOOTPROTO=static >> $scrFile
        echo IPADDR=$ip >> $scrFile
        echo NETMASK=$netmask >> $scrFile
        [ $dns1 ] && echo DNS1=$dns1 >> $scrFile
        [ $dns2 ] && echo DNS2=$dns2 >> $scrFile
    else
        echo BOOTPROTO=dhcp >> $scrFile
    fi
}

function default_settings {
    hostname="fuel-pm"
    domain="local"
    mgmt_if="eth0"
    mgmt_ip="10.0.0.100"
    mgmt_mask="255.255.0.0"
    ext_if="eth1"
    dhcp_start_address="10.0.0.201"
    dhcp_end_address="10.0.0.254"
    mirror_type="default"
}

function apply_settings {
    echo;echo "Applying settings ..."

# Network interfaces settings apply
    for iftype in ext mgmt
    do
        eval device=\$${iftype}_if
        eval ip=\$${iftype}_ip
        eval netmask=\$${iftype}_mask
        eval gw=\$${iftype}_gw
        eval dns1=\$${iftype}_dns1
        eval dns2=\$${iftype}_dns2
        hwaddr=`ifconfig $device | grep -i hwaddr | sed -e 's#^.*hwaddr[[:space:]]*##I'`
        save_if_cfg
    done

# Cobbler settings apply
    : ${server:=$mgmt_ip}
    : ${domain_name=$domain}
    : ${name_server=$mgmt_ip}
    : ${next_server=$mgmt_ip}
    : ${dhcp_netmask=$mgmt_mask}
    : ${dhcp_gateway=$mgmt_ip}
    : ${cobbler_user="cobbler"}
    : ${cobbler_password="cobbler"}
    : ${pxetimeout="0"}
    : ${dhcp_interface=$mgmt_if}

# Domain/Hostname apply
    sed -i -e 's#^\(HOSTNAME=\).*$#\1'"$hostname"'#' /etc/sysconfig/network
    [ -n "$mgmt_ip" -a -n "$ext_ip" ] && echo "nameserver 127.0.0.1;" >> /etc/resolv.conf
    [ -z "$mgmt_ip" ] && echo "prepend domain-name-servers 127.0.0.1;" >> /etc/dhclient-$mgmt_if.conf
    [ -z "$ext_ip" ] && echo "prepend domain-name-servers 127.0.0.1;" >> /etc/dhclient-$ext_if.conf
    [ -z "$mgmt_ip" ] || grep -Eq "^\s*$mgmt_ip\s+$hostname" /etc/hosts || echo "$mgmt_ip    $hostname.$domain $hostname" >> /etc/hosts
    service network restart
    sed -i "s%\(^.*address is:\).*$%\1 `ip address show $ext_if | awk '/inet / {print \$2}' | cut -d/ -f1 -`%" /etc/issue
}


function show_top {
clear
echo "Domain: $domain"
echo "Hostname: $hostname"
echo "PXE range: $dhcp_start_address - $dhcp_end_address"
echo "Mirror set to use: $mirror_type"
echo
column -t -s% <(
echo "Management interface: $mgmt_if%External interface: $ext_if"
echo "IP address: ${mgmt_ip:="DHCP"}%IP address: ${ext_ip:="DHCP"}"
echo "Netmask: $mgmt_mask%Netmask: $ext_mask"
echo "Gateway: $mgmt_gw%Gateway:$ext_gw"
echo "DNS Server 1: $mgmt_dns1%DNS Server 1: $ext_dns1"
echo "DNS Server 2: $mgmt_dns2%DNS Server 2: $ext_dns2"
echo
)
echo
}

function show_msg {
echo "Menu:"
echo "1. Change FQDN for masternode and cloud domain"
echo "2. Configure openstack cloud management interface"
echo "3. Configure external interface with repositories/internet access"
echo "4. Change IP range to use for baremetal provisioning via PXE"
echo "5. Choose set of mirror to use (default/custom)"
echo "6. Quit"
echo -n "Please, select an action to do:"
}

function menu_conf {
while [ $endconf -ne 1 ]; do
    show_top
    show_msg
    read -n 1 -t 5 answer
    if [ $? -gt 128 -a -f /root/fuel.defaults ]; then
        source /root/fuel.defaults
        endconf=1
    else
    case $answer in
        1)
            show_top
            echo -n "Please enter hostname of this puppetmaster/cobbler: "; read hostname
            echo -n "Please enter domain for this cloud: "; read domain
            ;;
        2)
            show_top
            echo -n "Please specify interface to use for management network: "; read mgmt_if
            intf="mgmt"
            set_if_conf
            ;;
        3)
            show_top
            echo -n "Please specify interface to access repositories/internet: "; read ext_if
            intf="ext"
            set_if_conf
            ;;
        4)
            show_top
            echo -n "Please enter start address: "; read dhcp_start_address
            echo -n "Please enter end address: "; read dhcp_end_address
            ;;
        5)
            show_top
            echo -n "Please select set of mirrors to use(default/custom): "; read mirror_type
            ;;
        6)
            echo;echo "Those changes are permanent!"
            echo -n "Are you sure about applying them? (y/N):"; read -n 1 answ
            [[ $answ == "y" || $answ == "Y" ]] && endconf=1
            ;;
    esac
    fi
done
}