#!/bin/bash

# Server Stack Manager
# Syntax: stack <option> <arguments>
# Options: -html, -nginx, -php, -lemp, -mysql, -pma, -info, -purge-server-all, -php-ver
# Arguments: -purge, -notools, -noptim

source /opt/webinoly/lib/install
source /opt/webinoly/lib/webin
opt=$1
arg=$2


# Check if user entered arg before option and correct it.
if [[ $opt =~ ^(-purge|-notools|-noptim)$ ]]; then
	opt=$2
	arg=$1
fi

# FORCE - Unattended Purge
clear_force_flag() {
	[[ $(conf_read force-flag) == "true" ]] && conf_delete force-flag
}
if [[ $arg == "-purge=force" || $opt == "-purge-server-all=force" || $opt == "-php=force" ]]; then
	conf_write force-flag true
	[[ $arg == "-purge=force" ]] && arg="-purge"
	[[ $opt == "-purge-server-all=force" ]] && opt="-purge-server-all"
	[[ $opt == "-php=force" ]] && opt="-php"
	force="1"
fi

# Extract value if exist
if [[ $opt == "-nginx="* || $opt == "-html="* || $opt == "-lemp="* || $opt == "-php="* || $opt == "-php-ver="* ]]; then
	value=$(echo "${opt}" | cut -d'=' -f 2 -s)
	opt=$(echo "${opt}" | cut -d'=' -f 1 -s)
fi


# LEMP without Optimization for testing purpose (just packages)!
if [[ $arg == "-noptim" && $opt == "-lemp" ]]; then
	if ! [[ $(conf_read nginx) == "true" || $(conf_read php) == "true" || $(conf_read mysql) == "true" ]]; then
		nginx_install
		php_install
		mysql_install
		echo ""
		echo "${gre}LEMP without optimization has been installed!!! ${end}"
		echo ""
		messagend_install dbpass
	else
		echo "${red}[ERROR] Some packages are already installed!${end}"
	fi


# Delete some stack
elif [[ $arg == "-purge" && ( $opt == "-html" || $opt == "-nginx" ) ]]; then
	api-events_update pn1
	if [[ $(conf_read nginx) != "true" ]]; then
		echo "${red}Nginx is not installed, hence can not be deleted! ${end}"
		clear_force_flag
		# Use "0" because any other number cause running commands twice when using "force" in -purge-server-all
		exit 0
	fi
	
	echo ""
	echo "${red} ¡ C A U T I O N !  You are about to remove NGINX from your server!"
	echo ""
	
	if [[ $(conf_read force-flag) != "true" ]]; then
		echo " ${blu} Are you sure [y/N]? ${end}"
		while read -r -n 1 -s answer; do
		  answer=${answer:-n}
		  [[ $answer = [YyNn] ]] && break
		done
	fi
	
	if [[ $answer == [Yy] || $(conf_read force-flag) == "true" ]]; then
		if [[ $(conf_read force-flag) == "true" && $force == 1 ]]; then
			answer="Y"
		else
			echo ""
			echo "${blu}Do you want to delete your sites data directory (/var/www) [Y/n]? ${end}"
			while read -r -n 1 -s answer; do
			  answer=${answer:-y}
			  [[ $answer = [YyNn] ]] && break
			done
		fi
		if [[ $answer == [Yy] ]]; then
			[[ $(conf_read mysql-tool) == "true" ]] && stack -pma -purge
			api-events_update pn2
			site -delete-all
			sudo rm -rf /var/www/$(conf_read tools-port)
			sudo rm -rf /var/www/html
			api-events_update pn3
		fi
		
		sudo service nginx stop
		sudo apt -y purge nginx nginx-common
		[[ $(conf_read nginx-ppa) == "mainline" ]] && echo | sudo add-apt-repository --remove 'ppa:nginx/development' || echo | sudo add-apt-repository --remove 'ppa:nginx/stable'
		api-events_update pn4
		api-events_update pn5
		sudo apt -y purge certbot python-boto duplicity duply
		echo | sudo add-apt-repository --remove 'ppa:certbot/certbot'
		# Remove SSL Cron
		if [[ -a /var/spool/cron/crontabs/root ]]; then
			sudo sed -i '/MAILTO=/d' /var/spool/cron/crontabs/root
			sudo sed -i '/certbot renew/d' /var/spool/cron/crontabs/root
		fi
		sudo apt -y autoremove
		sudo rm $HOME/www
		sudo rm $HOME/sites-available
		api-events_update pn6
		linux_purge
		
		conf_write nginx purged
		conf_write nginx-optim purged
		conf_write nginx-tool purged
		conf_delete server-version
		echo ""
		echo "${gre}Nginx has been deleted successfully! ${end}"
		echo ""
	else
		echo ""
		echo " ${gre} Action aborted!!!  ${end}"
		echo ""
	fi
	echo ""
	
elif [[ $arg == "-purge" && $opt == "-php" ]]; then
	api-events_update pp1
	if [[ $(conf_read php) != "true" ]]; then
		echo "${red}PHP is not installed, hence can not be deleted! ${end}"
		clear_force_flag
		exit 0
	fi

	echo ""
	echo "${red} ¡ C A U T I O N !  You are about to remove PHP from your server!"
	echo " This action will also remove PhpMyAdmin if its installed because depends on PHP. ${end}"
	echo ""

	if [[ $(conf_read force-flag) != "true" ]]; then
		echo " ${blu} Are you sure [y/N]? ${end}"
		while read -r -n 1 -s answer; do
			answer=${answer:-n}
			[[ $answer = [YyNn] ]] && break
		done
	fi

	if [[ $answer == [Yy] || $(conf_read force-flag) == "true" ]]; then
		[[ $(conf_read mysql-tool) == "true" ]] && stack -pma -purge
		sudo service php*-fpm stop
		sudo apt -y purge php*-fpm php*-curl php*-gd php*-imap php*-mcrypt php*-readline php*-common php*-recode php*-mysql php*-cli php*-mbstring php*-bcmath php*-mysql php*-opcache php*-zip php*-xml php*-soap php-imagick graphviz php-pear php-xdebug php-msgpack
		sudo apt -y purge php-memcached php-memcache memcached
		sudo apt -y purge redis-server php-redis postfix
		echo | sudo add-apt-repository --remove 'ppa:ondrej/php'
		echo | sudo add-apt-repository --remove 'ppa:chris-lea/redis-server'
		sudo apt -y autoremove
		sudo rm -rf /etc/php
		sudo rm /opt/webinoly/templates/source/*

		conf_write php purged
		conf_write php-optim purged
		[[ $(conf_read php-v7.3) == "true" ]] && conf_write php-v7.3 purged
		[[ $(conf_read php-v7.2) == "true" ]] && conf_write php-v7.2 purged
		[[ $(conf_read php-v7.1) == "true" ]] && conf_write php-v7.1 purged
		[[ $(conf_read php-v7.0) == "true" ]] && conf_write php-v7.0 purged
		[[ $(conf_read php-v5.6) == "true" ]] && conf_write php-v5.6 purged

		if [[ $(conf_read php-tool) == "true" ]]; then
			rm -rf /var/www/$(conf_read tools-port)/htdocs/fpm
			rm -rf /var/www/$(conf_read tools-port)/htdocs/php
			conf_write php-tool purged
		fi

		echo ""
		echo "${gre}PHP has been deleted successfully! ${end}"
		echo ""
	else
		echo ""
		echo " ${gre} Action aborted!!!  ${end}"
		echo ""
	fi
	echo ""
	api-events_update pp2

	
elif [[ $arg == "-purge" && $opt == "-mysql" ]]; then
	api-events_update pm1
	if [[ $(conf_read mysql) != "true" ]]; then
		echo "${red}MySQL is not installed, hence can not be deleted! ${end}"
		clear_force_flag
		exit 0
	fi
	
	echo ""
	echo "${red} ¡ C A U T I O N !  You are about to remove MySQL from your server! ${end}"
	echo ""

	if [[ $(conf_read force-flag) != "true" ]]; then
		echo " ${blu} Are you sure [y/N]? ${end}"
		while read -r -n 1 -s answer; do
		  answer=${answer:-n}
		  [[ $answer = [YyNn] ]] && break
		done
	fi
	
	if [[ $answer == [Yy] || $(conf_read force-flag) == "true" ]]; then
		if [[ $(conf_read mysql-tool) == "true" ]]; then
			conf_write delautopma true
			stack -pma -purge
			conf_delete delautopma
		fi	
		sudo service mysql stop
		echo "mariadb-server-10.2 mariadb-server-10.2/postrm_remove_databases boolean true" | debconf-set-selections
		sudo apt -y purge mariadb-server mariadb-common mysql-common
		sudo apt -y purge mariadb-client
		sudo apt -y purge debconf-utils
		sudo apt -y autoremove
		
		os_name=$(check_osname)
		sudo add-apt-repository --remove "deb [arch=amd64,i386,ppc64el] http://mirrors.syringanetworks.net/mariadb/repo/10.2/ubuntu ${os_name} main"
		# Cases with MariaDB v10.2 support
		case "$os_name" in
			"trusty")
				sudo apt-key del 0xcbcb082a1bb943db
			;;
			"xenial"|"zesty"|"artful"|"bionic")
				sudo apt-key del 0xF1656F24C74CD1D8
			;;
		esac
		
		sudo rm -rf /etc/mysql
		sudo rm -rf /var/lib/mysql
		conf_delete mysql-root
		conf_delete mysql-admin
		conf_write mysql-client purged
		conf_write mysql purged
		echo ""
		echo "${gre}MySQL has been deleted successfully! ${end}"
		echo ""
	else
		echo ""
		echo " ${gre} Action aborted!!!  ${end}"
		echo ""
	fi
	echo ""
	api-events_update pm4
	
elif [[ $arg == "-purge" && $opt == "-pma" ]]; then
	api-events_update pm2
	if [[ $(conf_read mysql-tool) != "true" ]]; then
		echo "${red} PhpMyAdmin is not installed, hence can not be deleted! ${end}"
		clear_force_flag
		exit 0
	fi
	
	echo ""
	echo "${red} ¡ C A U T I O N !  You are about to remove PhpMyAdmin from your server! ${end}"
	echo ""

	if [[ $(conf_read force-flag) != "true" && $(conf_read delautopma) != "true" ]]; then
		echo " ${blu} Are you sure [y/N]? ${end} "
		while read -r -n 1 -s answer; do
		  answer=${answer:-n}
		  if [[ $answer = [YyNn] ]]; then
			break
		  fi
		done
	fi

	if [[ $answer == [Yy] || $(conf_read force-flag) == "true" || $(conf_read delautopma) == "true" ]]; then
		sudo rm -rf /var/www/$(conf_read tools-port)/htdocs/pma
		conf_write mysql-tool purged
		echo ""
		echo "${gre}PhpMyAdmin has been deleted successfully! ${end}"
		echo ""
	else
		echo ""
		echo " ${gre} Action aborted!!!  ${end}"
		echo ""
	fi
	echo ""
	api-events_update pm3
		
elif [[ $arg == "-purge" && $opt == "-lemp" ]]; then
	echo ""
	echo "${red}If you want to remove Webinoly Stack completely from your server use the '-purge-server-all' option or remove each package individually.  ${end}"
	echo ""
	
elif [[ $arg != "-purge" && $arg != "-notools" && -n "$arg" ]]; then
	echo ""
	echo "${red} $arg is not a valid argument! ${end}"
	echo ""


# Install some stack
elif [[ $opt == "-html" || $opt == "-nginx" ]]; then
	if [[ $(conf_read nginx) != "true" ]]; then
		nginx_install
		nginx_optim
		[[ $arg != "-notools" ]] && nginx_tool
		
		# By default Yoast Plugin support is enabled
		webinoly -yoast-sitemap=on
		
		echo ""
		echo "${gre}Nginx has been successfully Optimized by Webinoly! ${end}"
		echo ""
	else
		echo "${red}Nginx is already installed!${end}"
		if [[ $(conf_read nginx-optim) != "true" ]]; then
			nginx_optim
			echo "${gre}"
			echo "NGINX has been successfully Optimized by Webinoly!"
			echo "${end}"
		fi
		if [[ $(conf_read nginx-tool) != "true" && $arg != "-notools" ]]; then
			nginx_tool
			echo "${gre}"
			echo "NGINX Tools has been re-installed!"
			echo "${end}"
		fi
	fi
	
elif [[ $opt == "-php" ]]; then
	if [[ $(conf_read php) != "true" || ( -n $value && $(conf_read php-v${value}) != "true" ) ]]; then
		if [[ $(conf_read nginx) != "true" && $(conf_read force-flag) != "true" ]]; then
			echo ""
			echo "${blu}Nginx is not installed, do you want to install it too [Y/n]?${end} "
			while read -r -n 1 -s answer; do
			  answer=${answer:-y}
			  [[ $answer = [YyNn] ]] && break
			done
			[[ $answer != [Nn] ]] && stack -nginx $arg
		fi
		
		[[ -n $value ]] && php_install $value || php_install
		[[ -n $value && $(conf_read php-v${value}) == "true" ]] && php_optim $value
		[[ -z $value ]] && php_optim
		def=$(conf_read php-ver)
		[[ $arg != "-notools" && $(conf_read php-tool) != "true" ]] && php_tool
		echo ""
		echo "${gre}PHP has been successfully Optimized by Webinoly! ${end}"
		echo ""
	else
		echo "${red}PHP is already installed!${end}"
		if [[ $(conf_read php-optim) != "true" ]]; then
			php_optim
			echo "${gre}"
			echo "PHP has been successfully Optimized by Webinoly!"
			echo "${end}"
		fi
		if [[ $(conf_read php-tool) != "true" && $arg != "-notools" ]]; then
			php_tool
			echo "${gre}"
			echo "PHP Tools has been re-installed!"
			echo "${end}"
		fi
	fi
	
elif [[ $opt == "-mysql" ]]; then
	if [[ $(conf_read mysql) != "true" ]]; then
		mysql_install
		[[ $arg != "-notools" ]] && stack -pma
		messagend_install dbpass
	else
		echo "${red}MySQL is already installed!${end}"
		if [[ $(conf_read mysql-tool) != "true" && $arg != "-notools" ]]; then
			stack -pma
			echo "${gre}"
			echo "MySQL Tools has been re-installed!"
			echo "${end}"
		fi
	fi

elif [[ $opt == "-pma" ]]; then
	if [[ $(conf_read mysql) != "true" || $(conf_read php) != "true" || $(conf_read nginx) != "true" || $(conf_read nginx-tool) != "true" ]]; then
		echo "${red} You need to have MySQL, PHP and NGINX installed before you can install PhpMyAdmin! ${end}"
		clear_force_flag
		exit 0
	fi
	[[ $(conf_read mysql-tool) != "true" ]] && mysql_tool || echo "${red}PhpMyAdmin is already installed!${end}"

elif [[ $opt == "-lemp" ]]; then
	[[ $value =~ ^(stable|mainline)$ ]] && stack -nginx=$value $arg || stack -nginx $arg
	stack -php $arg
	stack -mysql $arg
	echo ""
	echo "${gre}Nginx, PHP, MySQL (MariaDB) and some other useful tools have been installed successfully! ${end}"
	echo ""
	
elif [[ $opt == "-php-ver" ]]; then
	if [[ $(conf_read multi-php) == "true" ]]; then
		echo "${red}This command is disabled because Multi-PHP is enabled!${end}"
		exit 0
	fi
	
	if [[ -n $value && ($value == "7.3" || $value == "7.2" || $value == "7.1" || $value == "7.0" || $value == "5.6") ]]; then
		echo "${blu}New PHP version: '$value' ${end}"
		if [[ $(conf_read php) == "true" && $(conf_read php-ver) == $value ]]; then
			echo "${red}PHP $value is currently installed!${end}"
		elif [[ $(conf_read php) == "true" && $(conf_read mysql-tool) == "true" ]]; then
			sudo stack -php -purge=force
			conf_write php-ver $value
			# force flag prevent to be questioned (Unattended) when nginx is not installed.
			conf_write force-flag true
			sudo stack -php
			sudo stack -pma
		elif [[ $(conf_read php) == "true" && $(conf_read mysql-tool) != "true" ]]; then
			sudo stack -php -purge=force
			conf_write php-ver $value
			conf_write force-flag true
			sudo stack -php
		elif [[ $(conf_read php) != "true" && $(conf_read mysql-tool) != "true" ]]; then
			conf_write php-ver $value
			echo "${gre}PHP is not already installed but new version will be installed next time! ${end}"
		fi
		clear_force_flag
	else
		echo "${red}Please, enter a valid PHP version!${end}"
	fi

	
# Info & Purge-Server-All
elif [[ $opt == "-info" ]]; then
	system_info
elif [[ $opt == "-purge-server-all" ]]; then
	echo ""
	echo "${red} ¡ C A U T I O N !  You are about to remove Webinoly Stack completely from your server!"
	echo " This action will remove Nginx, PHP, MySQL and all the other tools, all your sites will remain in the server but will be publicly unavailable after this action."
	echo ""
	echo " If you want to remove your sites data use the webinoly command: 'sudo webinoly -delete-all'"
	echo ""
	if [[ $(conf_read force-flag) != "true" && $force != 1 ]]; then
		echo " ${blu} Are you sure [y/N]? ${end}"
		while read -r -n 1 -s answer; do
		  answer=${answer:-n}
		  [[ $answer = [YyNn] ]] && break
		done
	else
		answer="Y"
	fi

	if [[ $answer == [Yy] ]]; then
		conf_write force-flag true
		[[ $force == 1 ]] && stack -nginx -purge=force || stack -nginx -purge
		[[ $force == 1 ]] && stack -mysql -purge=force || stack -mysql -purge
		[[ $force == 1 ]] && stack -php -purge=force || stack -php -purge
		clear_force_flag
		
		echo "${gre}"
		echo "****************************************************************************"
		echo "***     Webinoly Stack have been completely removed from your server     ***"
		echo "****         We are sad because you decided to remove Webinoly!!        ****"
		echo "****************************************************************************"
		echo "${end}"
	else
		echo ""
		echo " ${gre} Action aborted!!!  ${end}"
		echo ""
	fi
else
	echo "${red} $opt is not a valid option! ${end}"
fi


# Clear FORCE flag in config file
if [[ $force == 1 ]]; then
	clear_force_flag
	force="0"
fi