existing_version=$(php-config --version | cut -c 1-3)
version=$1
if [ "$existing_version" != "$1" ]; then
	if [ ! -e "/usr/bin/php$1" ]; then
		sudo DEBIAN_FRONTEND=noninteractive add-apt-repository ppa:ondrej/php -y >/dev/null 2>&1
		sudo DEBIAN_FRONTEND=noninteractive apt update -y >/dev/null 2>&1
		if [ "$1" != "7.4" ]; then
		  sudo DEBIAN_FRONTEND=noninteractive apt install -y php"$1" curl php"$1"-curl >/dev/null 2>&1
		else
		  sudo DEBIAN_FRONTEND=noninteractive apt install -y php"$1" php"$1"-dev curl php"$1"-curl >/dev/null 2>&1
		fi
	fi
	for tool in php phar phar.phar php-cgi php-config phpize; do
		if [ -e "/usr/bin/$tool$1" ]; then
			sudo update-alternatives --set $tool /usr/bin/"$tool$1" &
		fi
	done
fi	

if [ ! -e "/usr/bin/composer" ]; then
	curl -s -L https://getcomposer.org/installer > composer-setup.php
	if [ "$(curl -s https://composer.github.io/installer.sig)" != "$(php -r "echo hash_file('sha384', 'composer-setup.php');")" ]; then
		>&2 echo 'ERROR: Invalid installer signature'		
	else
		export COMPOSER_ALLOW_SUPERUSER=1
		sudo php composer-setup.php --install-dir=/usr/local/bin --filename=composer
	fi
	rm composer-setup.php	
fi

composer global require hirak/prestissimo >/dev/null 2>&1
ini_file=$(php --ini | grep "Loaded Configuration" | sed -e "s|.*:s*||" | sed "s/ //g")
ext_dir=$(php -i | grep "extension_dir => /usr" | sed -e "s|.*=> s*||")
sudo chmod 777 "$ini_file"
sudo mkdir -p /run/php
php -v
composer -V

add_extension()
{
  extension=$1
  install_command=$2
  prefix=$3
  log_prefix=$4
  if ! php -m | grep -i -q "$extension" && [ -e "$ext_dir/$extension.so" ]; then
    echo "$prefix=$extension" >> "$ini_file" && echo "\033[32;1m$log_prefix: Enabled $extension\033[0m";
  elif php -m | grep -i -q "$extension"; then
    echo "\033[33;1m$log_prefix: $extension was already enabled\033[0m";
  elif ! php -m | grep -i -q "$extension"; then
      eval "$install_command" && \
      echo "\033[32;1m$log_prefix: Installed and enabled $extension\033[0m" || \
      echo "\033[31;1m$log_prefix: Could not find php$version-$extension on APT repository\033[0m";
  fi
}