#!/bin/bash

if [ ! -e /etc/almalinux-release ]; then
    echo Currenly we support only AlmaLinux release 8.7+ x64 - exiting...
    exit 1
fi

# almalinux-release-8.8-1.el8.x86_64
release=`rpm --query almalinux-release `
if [ "foo`echo $release | grep -e '^almalinux-release-8.*x86_64$'`" != "foo" ] && [ `echo $release | cut -d '-' -f 3 | cut -d '.' -f 1` -ge 8 ]; then
    echo We are at `cat /etc/almalinux-release` x64 - continue...
else
   echo Currenly we support only AlmaLinux 8.8+ x64 - exiting...
   echo Please upgrade your server with yum update, reboot and repeat Thirdlane installation.
   exit 1
fi

if [ -e /etc/asterisk/ ]; then 
    echo "Asterisk is already installed - cannot continue - exiting..."
    exit 1
fi

# fix minor EL8 bug
sed -i "s/^ConditionCPUs=/#ConditionCPUs/" /usr/lib/systemd/system/irqbalance.service

# disable IPV6

IP=`which ip 2>/dev/null || echo /usr/sbin/ip`
ADDR=`$IP address show dev lo | grep inet6 | awk '{print $2}'`
CONF=/etc/sysctl.conf 

if [ "$ADDR" == "::1/128" ]; then
    echo Disable IPV6
    echo "Disable IPv6 at $CONF"
    sed -i '/net.ipv6.conf.all.disable_ipv6/d' $CONF
    sed -i '/net.ipv6.conf.default.disable_ipv6/d' $CONF
    echo 'net.ipv6.conf.all.disable_ipv6 = 1' >> /etc/sysctl.conf
    echo 'net.ipv6.conf.default.disable_ipv6 = 1' >> /etc/sysctl.conf
    sysctl -p
    for f in `ls /etc/sysconfig/network-scripts/ifcfg-*`; do sed -i 's/^IPV6INIT=.*$/IPV6INIT=no/' $f; done
    systemctl restart NetworkManager.service
else
    echo IPV6 is already disabled
fi

echo Fix localhost at /etc/hosts

sed -i /^::1/d /etc/hosts
echo '127.0.0.1       localhost' >>/etc/hosts

#yum clean all
#yum update -y

# disable SELINUX

if [ `sestatus | grep 'SELinux status' | awk '{print $3}'` == "enabled" ]; then 
    echo Disable SELINUX
    setenforce Permissive
    sed -i /etc/selinux/config -e 's/^SELINUX=.*$/SELINUX=disabled/'
cat <<-EOF
*******************************************************
*       We have disabled SELINUX at your server       *
*      In order to continue system installation       *
*            you MUST reboot your server              *
*******************************************************
EOF
echo "Press ENTER to reboot or Ctrl-C to abort..."
read REPLY
echo "Rebooting - please relogin and start installation script againt."
/sbin/reboot
fi

echo Sync time with NTP
/usr/bin/systemctl stop chronyd
/usr/sbin/chronyd -q 'server 0.north-america.pool.ntp.org iburst'
/usr/bin/systemctl start chronyd
/usr/bin/systemctl enable chronyd

yum clean all

yum -y install yum-utils tar wget gzip psmisc
rpm -ivh http://mirror-us.thirdlane.com/channels/thirdlane/centos/8/x86_64/thirdlane-release-0.0.2-2.el8.noarch.rpm http://mirror-us.thirdlane.com/channels/thirdlane/centos/8/x86_64/thirdlane-systemd-overrides-0.0.1-5.el8.noarch.rpm

if [ ! -e /etc/yum.repos.d/thirdlane.repo ]; then
    echo "!!! Cannot install Thirdlane repository - installation cannot continue !!!"
    echo "Fix the problem and run installation script again"
    exit 1
fi

rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY.thc.txt 
rpm --import http://repo.almalinux.org/almalinux/RPM-GPG-KEY-AlmaLinux-8
yum-config-manager --enable powertools plus ha >/dev/null 2>&1

#yum-config-manager --enable thirdlane-testing  >/dev/null 2>&1

HOME=/var/thirdlane_load/
LIB=http://lib.thirdlane.com/download/
FILE=pbxm-install-el8.tar.gz

mkdir -p $HOME
cd $HOME

wget $LIB/getpbx-el8/$FILE
tar zxf $FILE >/dev/null 2>&1

req=`expr 8 \* 1024 \* 1024` # 8Gb
mem=`free | grep Mem: | awk '{print $2}'`
swp=`free | grep Swap: | awk '{print $2}'`
tot=`expr ${mem} + ${swp}`
add=`expr ${req} - ${tot}`

echo MEM=${mem} SWAP=${swp} TOTAL=${tot} NEED=${add}

if [ ${add} -gt 0 ]; then
add=`expr ${add} + 20`  # add 20K
echo Create extra swap of ${add} Kbytes...
dd if=/dev/zero of=/swapfile bs=1024 count=${add}
mkswap /swapfile ${add} -f
chmod 0600 /swapfile
swapon /swapfile
echo "/swapfile swap swap defaults 0 0" >>/etc/fstab
fi

yum -y install epel-release
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-8
echo Disable EPEL repo to avoid conflicts...
yum-config-manager --disable epel >/dev/null 2>&1

PBXTYPE=ast13st

echo Install Thirdlane PBX Manager software
bash install_parts.sh ${PBXTYPE} 2>&1 | tee /root/thirdlane_install.log