#!/usr/bin/env bash

underline="\033[4m"
red="\033[1;31m"
green="\033[1;32m"
yellow="\033[1;33m"
bold="\033[1m"
reset="\033[0m"

if [ "$1" == "-h" ]; then
  echo -e "\\033[4msphp_php-fpm.sh \\033[0m"
  echo "Change php version (php-fpm)"
  echo
  echo "USAGE: sphp_php-fpm.sh version (8.1 8.2 8.3)"
  echo
  echo "   -h  display this help"
  echo
  exit 0
fi

#
# mass_dns: warning: Unable to determine any DNS servers. Reverse DNS is disabled. Try using --system-dns or specify valid servers with --dns-servers
#

homebrew_path=$(brew --prefix)
brew_prefix=$(brew --prefix | sed 's#/#\\\/#g')

protocol="http"
apache_conf_path=$(httpd -V | grep 'SERVER_CONFIG_FILE' | awk -F '\"' '{print $2}')
document_root=$(grep -e '^DocumentRoot' "$apache_conf_path" | awk '{print $2}' | sed 's/\"//g')
server_name=$(grep -e '^ServerName' "$apache_conf_path" | awk '{print $2}')
h=$(hostname)

vhost_conf=$(grep -e 'httpd-vhosts.conf' $apache_conf_path | awk '{print $2}')
#ssl_conf=$(grep -e 'httpd-ssl.conf' $homebrew_path/etc/httpd/httpd.conf | awk '{print $2}')
ssl_conf=$(grep -e 'httpd-ssl.conf' $apache_conf_path | awk '{print $2}')
if [ -f "$ssl_conf" ]; then
	apache_port=$(cat $ssl_conf | grep -e '^Listen' | awk '{print $2}')
	a=$(nmap --script http-methods -p$apache_port --script-args http-methods.url-path=’/page’ $h | grep -A1 "^PORT" | tail -1 | awk '{print $3}')
	if [[ "$a" == "http" ]] || [[ "$a" == "https" ]]; then protocol=$a; fi
fi

brew_array=("8.1","8.2","8.3")
php_array=("php@8.1" "php@8.2" "php@8.3")
php_installed_array=()
php_version="php@$1"
php_opt_path="$brew_prefix\/opt\/"

simple_php_version=$(echo "$php_version" | sed 's/^php@//' | sed 's/\.//')


# Current php version (from httpd.conf)
ip=$(grep -E SetHandler $apache_conf_path | grep -v \# | grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}:[0-9]{4}")
x=${ip: -2}
current__simple_php_version="$x"
current_php_version="php@${x:0:1}.${x:1}"
echo -e "${underline}Current${reset} php version: ${bold}$current_php_version${reset}"

# What versions of php are installed via brew
# /opt/homebrew/etc/php/8.0/php-fpm.d/www.conf - listen = 127.0.0.1:9081
echo -e "\nPHP version ${underline}installed${reset}:"
for i in ${php_array[*]}; do
    version=$(echo "$i" | sed 's/^php@//')
    if [[ -d "$homebrew_path/etc/php/$version" ]]; then
        php_installed_array+=("$i")
        #php_port=$(sed -n "/^listen/p" $homebrew_path/etc/php/$version/php-fpm.d/www.conf)
        php_ipport=$(grep -E ^listen $homebrew_path/etc/php/$version/php-fpm.d/www.conf | awk -F" = " '{print $2}')
        php_running=$(lsof -i -n -P | grep php-fpm | grep $php_ipport)

        [ -n "$php_running" ] && echo -e "  ● php-fpm version: ${bold}$i${reset} ($php_ipport)" "${green}Running...${reset}" || echo -e "php-fpm version: $version ($php_ipport)" "${red}Stopped.${reset}"

		echo -e "  ● php (cli): /opt/homebrew/opt/$i/bin/php"
    fi
done

proxy_pass_match_string="ProxyPassMatch \"^/(.*\.php(/.*)?)$\" \"fcgi://127.0.0.1:90$simple_php_version/opt/homebrew/local/var/www/\$1\""
set_handler_string="SetHandler \"proxy:fcgi://127.0.0.1:90$simple_php_version\""

# Check that the requested version is supported
if [[ " ${php_array[*]} " == *"$php_version"* ]]; then
    # Check that the requested version is installed
    if [[ " ${php_installed_array[*]} " == *"$php_version"* ]]; then
    
    	if [[ "$php_version" == "$current_php_version" ]]; then
    		echo -e "\nPHP already running version ${bold}$php_version${reset} !"
    		echo "Exiting..."
    		exit 0
    	else
    	
    		version=$(echo "$php_version" | sed 's/^php@//')

        	echo -e "\nSwitching to ${bold}$php_version${reset}..."
        	echo "Edit your Apache conf..."

			#sed -i.bak "s/ProxyPassMatch.*/ProxyPassMatch \"^/(.*\.php(/.*)?)$\" \"fcgi:\/\/127.0.0.1:90$simple_php_version\/opt\/homebrew\/local\/var\/www\/\$1\"/" $apache_conf_path
			#sed -i.bak "s/SetHandler \"proxy:fcgi.*/SetHandler \"proxy:fcgi:\/\/127.0.0.1:90$simple_php_version\"/" $apache_conf_path
		
			sed -i.bak "s/fcgi:\/\/127.0.0.1:90$current__simple_php_version/fcgi:\/\/127.0.0.1:90$simple_php_version/" $apache_conf_path
		
			echo "Restarting Apache server..."
		 
			#brew services restart httpd
			sudo apachectl -k restart
		
			echo "Loading PHP info..."
			echo '<?php echo phpinfo(); ?>' > $document_root/php-info.php && open "$protocol://$server_name/php-info.php"
		
        	echo "All done!"
        
        	echo -e "\n${underline}Apache conf files:${reset}"
        	echo "$apache_conf_path"
        	echo "$vhost_conf"
        	echo "$ssl_conf"
        	echo -e "${underline}PHP conf files:${reset}"
        	echo "$homebrew_path/etc/php/$version/php.ini"
       		echo "$homebrew_path/etc/php/$version/php-fpm.d/www.conf"
        	find "$homebrew_path/etc/php/$version/conf.d" -name "*.ini" -print | sort -n
        
        fi
    else
        echo -e "\nSorry, but $php_version is not installed via brew. Install by running: brew install $php_version"
    fi
else
    echo -e "\nUnknown version of PHP. PHP Switcher can only handle arguments of:" ${brew_array[@]}
fi