#!/bin/bash

# Install another version of php.
#
# usage: ynh_install_php --phpversion=phpversion [--package=packages]
# | arg: -v, --phpversion - Version of php to install. Can be one of 7.1, 7.2 or 7.3
# | arg: -p, --package - Additionnal php packages to install
ynh_install_php () {
	# Declare an array to define the options of this helper.
	local legacy_args=vp
	declare -Ar args_array=( [v]=phpversion= [p]=package= )
	local phpversion
	local package
	# Manage arguments with getopts
	ynh_handle_getopts_args "$@"
	package=${package:-}

	# Store php_version into the config of this app
	ynh_app_setting_set $app php_version $phpversion

	if [ "$phpversion" == "7.0" ]
	then
		ynh_die "Do not use ynh_install_php to install php7.0"
	fi

	# Store the ID of this app and the version of php requested for it
	echo "$YNH_APP_INSTANCE_NAME:$phpversion" | tee --append "/etc/php/ynh_app_version"

	# Add an extra repository for those packages
	if [ ! -f "/etc/apt/sources.list.d/sury.list" ]; then
		ynh_install_extra_repo --repo="https://packages.sury.org/php/ $(lsb_release -sc) main" --key="https://packages.sury.org/php/apt.gpg" --priority=995 --name=extra_php_version
	fi

	# Install requested dependencies from this extra repository.
	# Install php-fpm first, otherwise php will install apache as a dependency.
	ynh_add_app_dependencies --package="php${phpversion}-fpm"
	ynh_add_app_dependencies --package="php$phpversion php${phpversion}-common $package"

	# Set php7.0 back as the default version for php-cli.
	update-alternatives --set php /usr/bin/php7.0

	# Remove this extra repository after packages are installed
        if [ ! -f "/etc/apt/sources.list.d/sury.list" ]; then
		ynh_remove_extra_repo --name=extra_php_version
	fi

	# Advertise service in admin panel
	yunohost service add php${phpversion}-fpm --log "/var/log/php${phpversion}-fpm.log"
}

ynh_remove_php () {
	# Get the version of php used by this app
	local phpversion=$(ynh_app_setting_get $app php_version)

	if [ "$phpversion" == "7.0" ] || [ -z "$phpversion" ]
	then
		if [ "$phpversion" == "7.0" ]
		then
			ynh_print_err "Do not use ynh_remove_php to install php7.0"
		fi
		return 0
	fi

	# Remove the line for this app
	sed --in-place "/$YNH_APP_INSTANCE_NAME:$phpversion/d" "/etc/php/ynh_app_version"

	# If no other app uses this version of php, remove it.
	if ! grep --quiet "$phpversion" "/etc/php/ynh_app_version"
	then
		# Purge php dependences for this version.
		ynh_package_autopurge "php$phpversion php${phpversion}-fpm php${phpversion}-common"
		# Remove the service from the admin panel
		yunohost service remove php${phpversion}-fpm
	fi

	# If no other app uses alternate php versions, remove the extra repo for php
	if [ ! -s "/etc/php/ynh_app_version" ]
	then
		ynh_secure_remove /etc/php/ynh_app_version
	fi
}