#!/bin/bash
# info: add php fpm version
# options: VERSION
#
# example: v-add-web-php 8.0
#
# Install php-fpm for provided version.

#----------------------------------------------------------#
#                Variables & Functions                     #
#----------------------------------------------------------#

# Argument definition
version=$1

# Includes
# shellcheck source=/etc/hestiacp/hestia.conf
source /etc/hestiacp/hestia.conf
# shellcheck source=/usr/local/hestia/func/main.sh
source $HESTIA/func/main.sh
# load config file
source_conf "$HESTIA/conf/hestia.conf"
source_conf "$HESTIA/install/upgrade/upgrade.conf"
#----------------------------------------------------------#
#                    Verifications                         #
#----------------------------------------------------------#

check_args '1' "$#" 'VERSION'

if [ -z "$WEB_BACKEND" ]; then
	echo "Multiple php versions are not supported for modphp"
fi

# Set file locations
php_fpm="/etc/init.d/php$version-fpm"

# Verify php version format
if [[ ! $version =~ ^[0-9]+\.[0-9]+ ]]; then
	echo "The specified PHP version format is invalid, it should look like [0-9].[0-9]."
	echo "Example: 7.0, 7.4, 8.0"
	exit "$E_INVALID"
fi

# Check if php version already exists
if [ -f "$php_fpm" ] && [ -f "$HESTIA/data/templates/web/php-fpm/PHP-${version/\./_}.tpl" ]; then
	echo "ERROR: Specified PHP version is already installed."
	exit "$E_INVALID"
fi

# Check if php version is supported
if [[ ! "$multiphp_v" =~ $version ]]; then
	echo "ERROR: Specified PHP version is not supported or does not exist."
	exit "$E_INVALID"
fi

# Perform verification if read-only mode is enabled
check_hestia_demo_mode

#----------------------------------------------------------#
#                       Action                             #
#----------------------------------------------------------#

mph="php$version-common php$version-mbstring php$version-bcmath php$version-cli php$version-curl
     php$version-fpm php$version-gd php$version-intl php$version-mysql
     php$version-soap php$version-xml php$version-zip php$version-json php$version-bz2
     php$version-pspell php$version-imagick php$version-pgsql php$version-imap php$version-ldap php$version-apcu"

# Check if version is 7.1 or below to add mcrypt
if [[ $(echo "$version 7.2" | awk '{print ($1 < $2)}') == 1 ]]; then
	mph="$mph php$version-mcrypt"
fi

# Check if version is 8.0 or higher and drop json
if [[ ${version:0:1} == "8" ]]; then
	mph=$(echo "$mph" | sed -e "s/php$version-json//")
fi

if ! echo "$DB_SYSTEM" | grep -w 'mysql' > /dev/null; then
	mph=$(echo "$mph" | sed -e "s/php$version-mysql//")
fi

if ! echo "$DB_SYSTEM" | grep -w 'pgsql' > /dev/null; then
	mph=$(echo "$mph" | sed -e "s/php$version-pgsql//")
fi

# Install php packages
apt-get -qq update
apt-get -y -qq -o Dpkg::Options::="--force-confold" install $mph > /dev/null 2>&1 &

BACK_PID=$!

# Check if package installation is done, print a spinner
echo "Installing PHP-$version, please wait..."
spinner="/-\|"
spin_i=1
while kill -0 $BACK_PID > /dev/null 2>&1; do
	printf "\b${spinner:spin_i++%${#spinner}:1}"
	sleep 0.5
done

# Do a blank echo to get the \n back
echo

# Check if installation was successful
if [ ! -f "$php_fpm" ]; then
	echo "ERROR: Installation failed, please run the following command manually for debugging:"
	echo "apt-get install $mph"
fi

# Check if required modules for apache2 are enabled
if [ "$WEB_SYSTEM" = "apache2" ]; then
	if ! a2query -q -m proxy_fcgi; then
		a2enmod -q proxy_fcgi
	fi
	if ! a2query -q -m setenvif; then
		a2enmod -q setenvif
	fi
	$BIN/v-restart-web "yes"
fi

# Configure fpm
update-rc.d php$version-fpm defaults > /dev/null 2>&1
v_tpl=${version//./}
rm -f /etc/php/$version/fpm/pool.d/*
cp -f $HESTIA_INSTALL_DIR/php-fpm/dummy.conf /etc/php/$version/fpm/pool.d/
sed -i "s/%backend_version%/$version/g" /etc/php/$version/fpm/pool.d/dummy.conf
cp -f $HESTIA_INSTALL_DIR/php-fpm/php-fpm.conf /etc/php/$version/fpm/
sed -i "s/fpm_v/$version/g" /etc/php/$version/fpm/php-fpm.conf

# Increase max upload and max post size
sed -i "s/upload_max_filesize = 2M/upload_max_filesize = 100M/g" /etc/php/$version/fpm/php.ini
sed -i "s/post_max_size = 8M/post_max_size = 100M/g" /etc/php/$version/fpm/php.ini
sed -i "s/max_execution_time = 30/max_execution_time = 60/g" /etc/php/$version/fpm/php.ini
sed -i "s/;max_input_vars = 1000/max_input_vars = 4000/g" /etc/php/$version/fpm/php.ini

# Disable exec and other harmfull php functions
sed -i "s/disable_functions =.*/disable_functions = pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,exec,system,passthru,shell_exec,proc_open,popen/g" /etc/php/$version/fpm/php.ini

sed -i "s/disable_functions =.*/disable_functions = pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority/g" /etc/php/$version/cli/php.ini

# Other use full changes
sed -i "s/;opcache.enable=1/opcache.enable=1/g" /etc/php/$version/fpm/php.ini
sed -i "s/;opcache.memory_consumption=128/opcache.memory_consumption=512/g" /etc/php/$version/fpm/php.ini
sed -i "s/;opcache.max_accelerated_files=10000/opcache.max_accelerated_files=100000/g" /etc/php/$version/fpm/php.ini

# Install backend template
cp -f $HESTIA_INSTALL_DIR/php-fpm/multiphp.tpl \
	$HESTIA/data/templates/web/php-fpm/PHP-${version/\./_}.tpl

#----------------------------------------------------------#
#                       Hestia                             #
#----------------------------------------------------------#

# Logging
$BIN/v-log-action "system" "Info" "System" "Installed PHP $version."
log_event "$OK" "$ARGUMENTS"

exit
