#!/bin/bash
case "`grep DISTRIB_CODENAME /etc/*-release | awk -F '=' '{print $2}'`" in
      focal)
             if [ "$(whoami)" != "root" ]
             then
                 echo "You should Login as root to use this script!";
                 echo "May you already have access for sudo, but commands aren't designed with sudo! so..";
                 echo "sudo -i";
                 exit 1
             fi

             if [ -d "/nginx/" ]; then
                 echo "We've detect a folder '/nginx/' which means"
                 echo "Maybe you have use this script before!"
                 echo "You wipe old installation by executing!"
                 echo "./install clean (**THIS WILL DELETE ALL YOUR OLD NGINX CONFIGS MAKE SURE YOU BACKUP BEFORE USING**)"
                 exit 1
             fi

             if [ -d "/etc/nginx" ]; then
                 echo "We've detect a folder '/etc/nginx' which means"
                 echo "Maybe you have use this script before!"
                 echo "./install clean (**THIS WILL DELETE ALL YOUR OLD NGINX CONFIGS MAKE SURE YOU BACKUP BEFORE USING**)"
                 exit 1
             fi

             if [ -d "/opt/nginx/" ]; then
                 echo "DETECTED '/opt/nginx/'"
                 echo "Maybe script has already been used you need to start clean!"
                 echo "./install clean (**THIS WILL DELETE ALL YOUR OLD NGINX CONFIGS MAKE SURE YOU BACKUP BEFORE USING**)"
                 exit 1
             fi
              
             apt-get update -y; apt-get upgrade -y; apt-get dist-upgrade -y; apt-get autoremove -y
             apt-get install libtool pkg-config -y
             apt-get install libyajl-dev ssdeep libgeoip-dev liblmdb-dev libfuzzy-dev libmaxminddb-dev liblua5.2-dev libcurl4-openssl-dev libxml2 libxml2-dev libpcre3-dev -y

             mkdir -p /opt/mod/
             #Luajit 2.1
             cd /opt/mod && wget https://github.com/openresty/luajit2/archive/refs/tags/v2.1-20220310.tar.gz
             cd /opt/mod && tar xf v2.1-20220310.tar.gz; rm -Rf v2.1-20220310.tar.gz
             cd /opt/mod/luajit2-2.1-20220310/ && make install PREFIX=/usr/local/LuaJIT && ldconfig
             rm -Rf /opt/mod/luajit2-2.1-20220310/

             # ModSecurity
             cd /opt/mod && git clone https://github.com/SpiderLabs/ModSecurity
             cd /opt/mod/ModSecurity/ && git checkout -b v3/master origin/v3/master
             cd /opt/mod/ModSecurity && sh build.sh
             cd /opt/mod/ModSecurity && git submodule init && git submodule update
             cd /opt/mod/ModSecurity && ./configure && make -j`nproc` && make install

             # Nginx 
             cd /opt/ && wget https://nginx.org/download/nginx-1.21.6.tar.gz && tar xf nginx-1.21.6.tar.gz && rm -Rf nginx-1.21.6.tar.gz
             cd /opt/nginx-1.21.6 && curl -s https://raw.githubusercontent.com/theraw/The-World-Is-Yours/focal-patch/static/builder > builder; bash builder
      ;;
esac