#!/bin/bash

rm -rf /usr/local/nginx
rm /etc/systemd/system/nginx.service

lowercase(){
    echo "$1" | sed "y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/"
}

OS=`lowercase \`uname\``
KERNEL=`uname -r`
MACH=`uname -m`

if [ "$OS" == "windowsnt" ]; then
    OS=windows
elif [ "$OS" == "darwin" ]; then
    OS=mac
else
    OS=`uname`
    if [ "${OS}" = "SunOS" ] ; then
        OS=Solaris
        ARCH=`uname -p`
        OSSTR="${OS} ${REV}(${ARCH} `uname -v`)"
    elif [ "${OS}" = "AIX" ] ; then
        OSSTR="${OS} `oslevel` (`oslevel -r`)"
    elif [ "${OS}" = "Linux" ] ; then
        if [ -f /etc/redhat-release ] ; then
            DistroBasedOn='RedHat'
            DIST=`cat /etc/redhat-release |sed s/\ release.*//`
            PSUEDONAME=`cat /etc/redhat-release | sed s/.*\(// | sed s/\)//`
            REV=`cat /etc/redhat-release | sed s/.*release\ // | sed s/\ .*//`
        elif [ -f /etc/SuSE-release ] ; then
            DistroBasedOn='SuSe'
            PSUEDONAME=`cat /etc/SuSE-release | tr "\n" ' '| sed s/VERSION.*//`
            REV=`cat /etc/SuSE-release | tr "\n" ' ' | sed s/.*=\ //`
        elif [ -f /etc/mandrake-release ] ; then
            DistroBasedOn='Mandrake'
            PSUEDONAME=`cat /etc/mandrake-release | sed s/.*\(// | sed s/\)//`
            REV=`cat /etc/mandrake-release | sed s/.*release\ // | sed s/\ .*//`
        elif [ -f /etc/debian_version ] ; then
            DistroBasedOn='Debian'
            DIST=`cat /etc/lsb-release | grep '^DISTRIB_ID' | awk -F=  '{ print $2 }'`
            PSUEDONAME=`cat /etc/lsb-release | grep '^DISTRIB_CODENAME' | awk -F=  '{ print $2 }'`
            REV=`cat /etc/lsb-release | grep '^DISTRIB_RELEASE' | awk -F=  '{ print $2 }'`
        fi
        if [ -f /etc/UnitedLinux-release ] ; then
            DIST="${DIST}[`cat /etc/UnitedLinux-release | tr "\n" ' ' | sed s/VERSION.*//`]"
        fi
        OS=`lowercase $OS`
        DistroBasedOn=`lowercase $DistroBasedOn`
        readonly OS
        readonly DIST
        readonly DistroBasedOn
        readonly PSUEDONAME
        readonly REV
        readonly KERNEL
        readonly MACH
    fi

fi

read -p 'Soll Nginx mit Lets Encrypt eingerichtet werden? (Y/n)' ifle

if [ "$ifle" == "Y" ] || [ "$ifle" == "y" ]; then
	git clone https://github.com/certbot/certbot.git /opt/certbot
	ln -s /opt/certbot/certbot-auto /usr/local/bin/certbot
	ln -s /opt/certbot/certbot-auto /usr/local/bin/letsencrypt
	cp make_cert /usr/local/bin
	chmod +x /usr/local/bin/make_cert
	crontab -l | { cat; echo "@weekly certbot renew --pre-hook 'systemctl stop nginx' --post-hook 'systemctl start nginx' --renew-hook 'systemctl reload nginx' --quiet"; } | crontab -
fi

if [ "$DIST" == "Fedora" ]; then
	dnf install gcc gcc-c++ autoconf automake make perl -y
elif [ "$DIST" == "Ubuntu" ] || [ "$DistroBasedOn" == "debian" ]; then
	apt-get install gcc g++ autoconf automake make perl openssl libssl-dev -y
elif [ "$DIST" == "CentOS" ] || [ "$DIST" == "CentOS Linux" ]; then
	yum install gcc gcc-c++ autoconf automake make perl -y
elif [ "$DistroBasedOn" == "suse" ]; then
	zypper install -y gcc gcc-c++ autoconf automake make perl
fi

wget ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.41.tar.gz
tar -zxf pcre-8.41.tar.gz
cd pcre-8.41
./configure
make
make install
cd ..
cd zlib-1.2.11
./configure
make
make install
cd ..
cd openssl-1.0.2f
./Configure linux-x86_64 --prefix=/usr
make
make install
cd ..
cd ngx_pagespeed-latest-beta
wget https://dl.google.com/dl/page-speed/psol/1.12.34.2-x64.tar.gz
tar -xzvf 1.12.34.2-x64.tar.gz
cd ..

./configure --sbin-path=/usr/local/nginx/nginx --conf-path=/usr/local/nginx/nginx.conf --pid-path=/usr/local/nginx/nginx.pid --with-pcre=pcre-8.41 --with-zlib=zlib-1.2.11 --with-http_ssl_module --with-stream --with-mail=dynamic --with-ipv6 --with-http_v2_module --with-http_realip_module --with-http_dav_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_slice_module --with-http_stub_status_module --with-http_addition_module --add-module=naxsi-0.55.3 --add-module=ngx-fancyindex --add-dynamic-module=headers-more-nginx-module-0.32 --add-module=ngx_pagespeed-latest-beta
make
make install

rm -rf /usr/local/nginx/nginx.conf
cp nginx.conf /usr/local/nginx/
mkdir -p /usr/local/nginx/snippets
cp ssl-params.conf /usr/local/nginx/snippets/
cp ngensite /usr/local/bin
chmod +x /usr/local/bin/ngensite

mkdir -p /var/log/nginx/

mv nginx.service /etc/systemd/system/
systemctl daemon-reload
systemctl enable nginx

git clone https://github.com/h5bp/server-configs-nginx.git /tmp/server-configs-nginx
mv /tmp/server-configs-nginx/h5bp /usr/local/nginx/
rm -rf /tmp/server-configs-nginx
openssl dhparam -out /etc/ssl/certs/dhparam.pem 2048
cd /usr/local/nginx
mkdir sites-available
mkdir sites-enabled

ln -s /usr/local/nginx /usr/local/bin/nginx

echo ""
echo "----------------"
echo "Installation abgeschlossen!"
echo "Du kannst Nginx jetzt mit systemctl start nginx starten!"
echo "Deine vHosts kannst du im Verzeichnis /usr/local/nginx/sites-available ablegen, und dann mit dem Befehl ngensite datei aktivieren!"