#!/usr/bin/env bash

# Author        : Allan Christensen
# First Created : 05012022 (DD-MM-YYYY)
# Description   : Installs Nginx on Ubuntu 24.04
# License       : MIT License (see LICENSE file for details)

#
# Are we root
#
if [[ $(id -u) -ne 0 ]]; then echo "" && echo "Must be root or use sudo" && echo "" ; exit 1; fi

#
# Check if services are allready running
#
for svc in nginx php*-fpm; do if systemctl is-active --quiet "$svc"; then printf "\n%s is already running, cannot continue...\n\n" "${svc^}" ; exit 1 ; fi ; done

#
# Let's go
#
clear

#
# Install and configure Nginx
#
apt install -y nginx
rm /var/www/html/index.nginx-debian.html > /dev/null 2>&1
rm /etc/nginx/snippets/snakeoil.conf  > /dev/null 2>&1
mkdir -p /var/cache/nginx/fcgi
mkdir -p /etc/nginx/static-sites

#
# Clone nginx-snippets; if nginx-snippets exists then just pull latest changes
#
nginxsnippets="/etc/nginx/nginx-snippets"
repo="https://git.x-files.dk/webserver/nginx-snippets.git"
if [[ -d "$nginxsnippets/.git" ]]; then git -C "$nginxsnippets" pull --quiet; else git clone --quiet "$repo" "$nginxsnippets"; fi

#
# Install Php-Fpm
#
apt install -y php-fpm php-curl php-dom php-gd php-imagick php-ldap php-mbstring php-mysql php-pear php-soap php-xml php-zip

#
# Determine Php version
#
phpver=$(php -r 'echo PHP_MAJOR_VERSION.".".PHP_MINOR_VERSION;')
phpfpm="php${phpver}-fpm"
phpclidir="/etc/php/$phpver/cli"
phpfpmdir="/etc/php/$phpver/fpm"

#
# Configure Nginx
#
cp "$phpclidir"/php.ini "$phpclidir"/php.ini.orig
cp "$phpfpmdir"/php.ini "$phpfpmdir"/php.ini.orig
cp "$nginxsnippets"/nginxconf/nginx.conf /etc/nginx
cp "$nginxsnippets"/nginxconf/nginx.conf.high.perf /etc/nginx
cp "$nginxsnippets"/nginxconf/default /etc/nginx/sites-available/default
sed -i "s/PHPVERSION/$phpfpm/" /etc/nginx/nginx.conf
sed -i "s/PHPVERSION/$phpfpm/" /etc/nginx/nginx.conf.high.perf

#
# Creating a high performance www.conf file for optional or later use
#
cp /etc/php/"$phpver"/fpm/pool.d/www.conf /etc/nginx/www.conf.high.perf
sed -i "s/pm.max_children = 5/pm.max_children = 50/" /etc/nginx/www.conf.high.perf
sed -i "s/pm.start_servers = 2/pm.start_servers = 15/" /etc/nginx/www.conf.high.perf
sed -i "s/pm.max_spare_servers = 3/pm.max_spare_servers = 10/" /etc/nginx/www.conf.high.perf
sed -i "s/;pm.process_idle_timeout = 10s/pm.process_idle_timeout = 10s/" /etc/nginx/www.conf.high.perf
sed -i "s/;pm.max_requests = 500/pm.max_requests = 500/" /etc/nginx/www.conf.high.perf

#
# Adjusting php.ini with stuff I usually forget
#
sed -i 's/;max_input_vars = 1000/max_input_vars = 3000/' "$phpclidir"/php.ini
sed -i 's/;max_input_vars = 1000/max_input_vars = 3000/' "$phpfpmdir"/php.ini
sed -i 's/upload_max_filesize = 2M/upload_max_filesize = 50M/' "$phpfpmdir"/php.ini
sed -i 's/max_file_uploads = 20/max_file_uploads = 100/' "$phpfpmdir"/php.ini
sed -i 's/;date.timezone =/date.timezone = Europe\/Copenhagen/' "$phpclidir"/php.ini
sed -i 's/;date.timezone =/date.timezone = Europe\/Copenhagen/' "$phpfpmdir"/php.ini

#
# Restart Nginx and Php-Fpm
#
systemctl restart "$phpfpm"
systemctl restart nginx

#
# All done
#
printf "\n\nAll Done...\n\n"

#
# End of script
#