#!/bin/bash



# Checking Permissions
Permission=$(id -u)
if [ $Permission -ne 0 ] 
then
	echo -e "\033[31m Root Privilege Required... \e[0m"
	echo -e "\033[31m Uses:  sudo $0 \e[0m"
	exit 100 
fi


# Capture Errors
OwnError()
{
	echo -e "[ `date` ] \033[31m $@ \e[0m" | tee -ai $ERRORLOG
	exit 101
}


# Make Variables Available For Later Use
LOGDIR=/var/log/easyengine
MAINLOG=/var/log/easyengine/main.log
ERRORLOG=/var/log/easyengine/error.log

# Help Function
EngineHelp()
{
	
	echo
	echo "Usage: `basename $0` [OPTION] [ARGUMENT]..."
	echo "Admin tools for nginx based wordpress sites management."
	
	echo
	echo "OPTION:"
	echo " `basename $0` [system]	[install|remove|purge] [nginx|php|mysql|postfix|--all]"

	echo
	echo " `basename $0` [site]	[read]	 [all|active|sitename]"
	echo " `basename $0` [site]	[create] [sitename] [--with-wordpress]"
	echo " `basename $0` [site]	[update] [sitename] []"
	echo " `basename $0` [site]	[delete] [sitename] [--with-data]"

	echo
	echo " `basename $0` [config]	[set|get] [memory|timeout]"

	echo
	echo "Exit status:"
	echo "   0 if OK,"
	echo " 100 sudo privilege required,"
	echo " 101 command failed to execute,"
}





# GET Information Function
GETINFO()
{

	# Get The MySQL Username/Password
	read -p "MySQL Host [localhost]: " TEMP
	read -p "Enter The MySQL Username: " MYSQLUSER

	# Turn Off Echo For Passwords
	stty -echo
	read -p "Enter The MySQL Password: " MYSQLPASS
	stty echo
	echo
	
	read -p "Enter The MySQL Database Name For $DOMAIN: " WPDBNAME

	# If Enter Is Pressed, Then Use localhost as MySQL Host
	if [[ $TEMP = "" ]]
	then
		MYSQLHOST=localhost
	else
		MYSQLHOST=$TEMP
	fi

	# Create Database
	mysql -u $MYSQLUSER -p$MYSQLPASS -e "create database \`$WPDBNAME\`" \
	|| OwnError "Unable to create $WPDBNAME"

	# Nginx User
	NGINXUSER=$(grep user /etc/nginx/nginx.conf | cut -d' ' -f2 | cut -d';' -f1) \
	|| OwnError "Unable to findout nginx user"

}

NGINXRELOAD()
{

	# Test & Reload Nginx
	echo -e "\033[34m Reloading nginx, please wait...  \e[0m"
	nginx -t && service nginx reload || OwnError "Unable to reload nginx"

}





# Pre Checks To Avoid Later Screw Ups
# Checking Logs Directory
if [ ! -d $LOGDIR ]
then
	echo -e "\033[34m Creating easyengine log directory...  \e[0m" 
	mkdir -p $LOGDIR || OwnError "Unable to create log directory $LOGDIR"
fi

# Checking Tee
if [ ! -x  /usr/bin/tee ]
then
	echo -e "\033[31m Tee command not found !! \e[0m"
	echo -e "\033[34m Installing tee  \e[0m"
	sudo apt-get -y install coreutils || OwnError "Unable to install tee"
fi

# Checking Wget
if [ ! -x  /usr/bin/wget ]
then
	echo -e "\033[31m Wget command not found !! \e[0m"
	echo -e "\033[34m Installing wget  \e[0m"
	sudo apt-get -y install wget || OwnError "Unable to install wget"
fi

# Checking Tar
if [ ! -x  /bin/tar ]
then
	echo -e "\033[31m Tar command not found !! \e[0m"
	echo -e "\033[34m Installing tar  \e[0m"
	sudo apt-get -y install tar || OwnError "Unable to install tar"
fi

# Checking Name Servers
if [[ -z $(cat /etc/resolv.conf | grep -v ^#) ]]
then
	echo -e "\033[31m No nameservers detected !! \e[0m" | tee -ai $ERRORLOG
	echo -e "\033[31m Please configure /etc/resolv.conf \e[0m" | tee -ai $ERRORLOG
	exit 100
fi
# Pre Checks End



# Easy Engine System Settings
if [ "$1" = "system" ]
then
	# Easy Engine Install
	if [ "$2" = "install" ]
	then
		
		if [ "$3" = "nginx" ]
		then
			# Install Python Software Properties
			echo -e "\033[34m Installing python software properties...  \e[0m"
			sudo apt-get -y install python-software-properties \
			|| OwnError "Unable to install python software properties"

			# Add Nginx Launchpad Repository
			echo -e "\033[34m Adding nginx launchpad repository...  \e[0m"
			sudo add-apt-repository ppa:nginx/stable \
			|| OwnError "Unable to add nginx launchpad repository"

			# Update The APT Cache
			echo -e "\033[34m Updating apt cache...  \e[0m"
			sudo apt-get update || OwnError "Unable to update apt cache"

			# Install Nginx
			echo -e "\033[34m Installing nginx...  \e[0m"
			sudo apt-get -y install nginx || OwnError "Unable to install nginx"
			
		elif [ "$3" = "php" ]
		then

			# Install Python Software Properties
			echo -e "\033[34m Installing python software properties...  \e[0m"
			sudo apt-get -y install python-software-properties \
			|| OwnError "Unable to install python software properties"

			# Add PHP Launchpad Repository
			echo -e "\033[34m Adding php5 launchpad repository...  \e[0m"
			sudo add-apt-repository ppa:ondrej/php5 \
			|| OwnError "Unable to add php5 launchpad repository"

			# Update The APT Cache
			echo -e "\033[34m Updating apt cache...  \e[0m"
			sudo apt-get update || OwnError "Unable to update apt cache"

			# Install PHP5
			echo -e "\033[34m Installing php5...  \e[0m"
			sudo apt-get -y install php5-common php5-mysql php5-xmlrpc \
			php5-cgi php5-curl php5-gd php5-cli php5-fpm php-apc php-pear \
			php5-dev php5-imap php5-mcrypt || OwnError "Unable to install php5"
			
		elif [ "$3" = "mysql" ]
		then

			# Update The APT Cache
			echo -e "\033[34m Updating apt cache...  \e[0m"
			sudo apt-get update || OwnError "Unable to update apt cache"

			# Install MySQL
			echo -e "\033[34m Installing mysql...  \e[0m"
			sudo apt-get -y install mysql-server mysqltuner \
			|| OwnError "Unable to install mysql"			

		elif [ "$3" = "postfix" ]
		then
			# Update The APT Cache
			echo -e "\033[34m Updating apt cache...  \e[0m"
			sudo apt-get update || OwnError "Unable to update apt cache"
			
			# Install Postfix
			echo -e "\033[34m Installing postfix...  \e[0m"
			sudo apt-get -y install postfix || OwnError "Unable to install postfix"

		elif [ "$3" = "--all" ]
		then
			
			# Install Python Software Properties
			echo -e "\033[34m Installing python software properties...  \e[0m"
                        sudo apt-get -y install python-software-properties \
                        || OwnError "Unable to install python software properties"

                        # Add Nginx Launchpad Repository
			echo -e "\033[34m Adding nginx launchpad repository...  \e[0m"
                        sudo add-apt-repository ppa:nginx/stable \
                        || OwnError "Unable to add nginx launchpad repository"

			# Add PHP Launchpad Repository
			echo -e "\033[34m Adding php5 launchpad repository...  \e[0m"
                        sudo add-apt-repository ppa:ondrej/php5 \
                        || OwnError "Unable to add php5 launchpad repository"

                        # Update The APT Cache
			echo -e "\033[34m Updating apt cache...  \e[0m"
                        sudo apt-get update || OwnError "Unable to update apt cache"

			# Install Nginx PHP5 MySQL Postfix
			echo -e "\033[34m Installing nginx php5 mysql postfix...  \e[0m"
                        sudo apt-get -y install nginx php5-common php5-mysql php5-xmlrpc \
                        php5-cgi php5-curl php5-gd php5-cli php5-fpm php-apc php-pear \
                        php5-dev php5-imap php5-mcrypt mysql-server mysqltuner postfix \
			|| OwnError "Unable to install nginx php5 mysql postfix"

		else
			EngineHelp
		fi


	# Easy Engine Remove
	elif [ "$2" = "remove" ]
	then
		
		if [ "$3" = "nginx" ]
                then
			# Remove Nginx
			echo -e "\033[34m Removing nginx...  \e[0m"
			sudo apt-get -y remove nginx || OwnError "Unable to remove nginx"

		elif [ "$3" = "php" ]
                then

			# Remove PHP5
			echo -e "\033[34m Removing php5...  \e[0m"
			sudo apt-get -y remove php5-common php5-mysql php5-xmlrpc \
                        php5-cgi php5-curl php5-gd php5-cli php5-fpm php-apc php-pear \
                        php5-dev php5-imap php5-mcrypt || OwnError "Unable to remove php5"

		elif [ "$3" = "mysql" ]
		then

			# Remove MySQL
			echo -e "\033[34m Removing mysql...  \e[0m"
			sudo apt-get -y remove mysql-server mysqltuner \
                        || OwnError "Unable to remove mysql"

		elif [ "$3" = "postfix" ]
		then

			# Remove Postfix
			echo -e "\033[34m Removing postfix...  \e[0m"
			sudo apt-get -y remove postfix || OwnError "Unable to remove postfix"

		elif [ "$3" = "--all" ]
		then

			# Remove All
			echo -e "\033[34m Removing nginx php5 mysql postfix...  \e[0m"
			sudo apt-get -y remove nginx php5-common php5-mysql php5-xmlrpc \
                        php5-cgi php5-curl php5-gd php5-cli php5-fpm php-apc php-pear \
                        php5-dev php5-imap php5-mcrypt mysql-server mysqltuner postfix \
                        || OwnError "Unable to remove nginx php5 mysql postfix"	

		else
			EngineHelp
		fi


	# Easy Engine Purge
	elif [ "$2" = "purge" ]
	then
		
		if [ "$3" = "nginx" ]
                then
			# Purge Nginx
			echo -e "\033[34m Purge nginx...  \e[0m"
			sudo apt-get -y remove --purge nginx || OwnError "Unable to purge nginx"

		elif [ "$3" = "php" ]
                then

			# Purge PHP5
			echo -e "\033[34m Purge php5...  \e[0m"
			sudo apt-get -y remove --purge php5-common php5-mysql php5-xmlrpc \
                        php5-cgi php5-curl php5-gd php5-cli php5-fpm php-apc php-pear \
                        php5-dev php5-imap php5-mcrypt || OwnError "Unable to purge php5"

		elif [ "$3" = "mysql" ]
		then

			# Purge MySQL
			echo -e "\033[34m Purge mysql...  \e[0m"
			sudo apt-get -y remove --purge mysql-server mysqltuner \
                        || OwnError "Unable to purge mysql"

		elif [ "$3" = "postfix" ]
		then

			# Purge Postfix
			echo -e "\033[34m Purge postfix...  \e[0m"
			sudo apt-get -y remove --purge postfix || OwnError "Unable to purge postfix"

		elif [ "$3" = "--all" ]
		then

			# Purge All
			echo -e "\033[34m Purge nginx php5 mysql postfix...  \e[0m"
			sudo apt-get -y remove --purge nginx php5-common php5-mysql php5-xmlrpc \
                        php5-cgi php5-curl php5-gd php5-cli php5-fpm php-apc php-pear \
                        php5-dev php5-imap php5-mcrypt mysql-server mysqltuner postfix \
                        || OwnError "Unable to purge nginx php5 mysql postfix"	

		else
			EngineHelp
		fi


	# Easy Engine Help
	else
		EngineHelp
	fi





# Easy Engine Site Settings
elif [ "$1" = "site" ]
then
	# Easy Engine Read
	if [ "$2" = "read" ]
	then

		if [ "$3" = "all" ]
		then
			# Display The List Of All Sites
			ls /etc/nginx/sites-available/ \
			|| OwnError "Unable to display the list of websites"

		elif [ "$3" = "active" ]
		then
			# Display The List Of Active Sites
			ls /etc/nginx/sites-enabled/ \
			|| OwnError "Unable to display the list of active websites"

		elif [ "$3" != "all" ] && [ "$3" != "active" ] && [ -n "$3" ]
		then

			# Check The Website Is Exist
			ls /etc/nginx/sites-available/$3 &> /dev/null \
			|| OwnError "The $3 is not found in available websites list"
			if [ $? -eq 0 ]
			then

				# Display The Specific Site Configuration
				cat /etc/nginx/sites-available/$3 \
				|| OwnError "Unable to display the $3 configuration settings"
			fi

		else
			EngineHelp

		fi


	# Easy Engine Create
	elif [ "$2" = "create" ]
	then

		if [ -n "$3" ]
		then

			# Remove http:// & www.
			DOMAIN=$(echo $3 | sed "s'http://''" | sed "s'www.''")

			# Creating Site
			echo -e "\033[34m Creating $DOMAIN, please wait...  \e[0m"
			sed "s/example.com/$DOMAIN/g" ../conf/nginx/singlesite/basic.conf \
			> /etc/nginx/sites-available/$DOMAIN \
			|| OwnError "Unable to create configuration file for $DOMAIN"

			# Creating Symbolic Link
			echo -e "\033[34m Creating symbolic link  \e[0m"
			ln -s /etc/nginx/sites-available/$DOMAIN /etc/nginx/sites-enabled/ \
			|| OwnError "Unable to create symbolic link for $DOMAIN"

			# Creating Htdocs & Logs Directory
			echo -e "\033[34m Creating htdocs and logs directory  \e[0m"
			mkdir -p /var/www/$DOMAIN/{htdocs,logs} \
			|| OwnError "Unable to create htdocs and logs directory"

			# Creating Symbolic Links For Logs
			echo -e "\033[34m Creating symbolic link for logs  \e[0m"
			ln -s /var/log/nginx/$DOMAIN.access.log /var/www/$DOMAIN/logs/access.log \
			&& ln -s /var/log/nginx/$DOMAIN.error.log /var/www/$DOMAIN/logs/error.log \
			|| OwnError "Unable to create symbolic link for $DOMAIN logs"


			if [ "$4" = "--with-wordpress" ]
			then
				# Download Latest Wordpress
				echo -e "\033[34m Downloading wordpress  \e[0m"
				wget -cO /var/www/$DOMAIN/htdocs/latest.tar.gz  \
				http://wordpress.org/latest.tar.gz

				# Extracting Wordpress
				tar --strip-components=1 -zxf /var/www/$DOMAIN/htdocs/latest.tar.gz \
				-C /var/www/$DOMAIN/htdocs/

				# Removing Wordpress Archive
				rm /var/www/$DOMAIN/htdocs/latest.tar.gz

				# Call GETINFO Function For MySQL & Nginx Values
				GETINFO

				# Modify wp-config.php
				cp -v /var/www/$DOMAIN/htdocs/wp-config-sample.php \
				/var/www/$DOMAIN/htdocs/wp-config.php


				sed -i "s/username_here/$MYSQLUSER/" \
				/var/www/$DOMAIN/htdocs/wp-config.php

				
				sed -i "s/password_here/$MYSQLPASS/" \
				/var/www/$DOMAIN/htdocs/wp-config.php

				sed -i "s/localhost/$MYSQLHOST/" \
				/var/www/$DOMAIN/htdocs/wp-config.php

				printf '%s\n' "g/put your unique phrase here/d" \
				a "$(curl -L https://api.wordpress.org/secret-key/1.1/salt/)" . w \
				| ed -s wp-config.php
								
				
				# Change Ownership
				echo -e "\033[34m Changing ownership  \e[0m"
				chown -R $NGINXUSER:$NGINXUSER /var/www/$DOMAIN/

			fi


			# Reload Nginx Configuration
			NGINXRELOAD


		else
			EngineHelp

		fi

	# Easy Engine Update
	elif [ "$2" = "update" ]
	then

		if [ -n "$3" ]
		then

			# Remove http:// & www.
			DOMAIN=$(echo $3 | sed "s'http://''" | sed "s'www.''")


			if [ "$4" = "" ]
			then

				# Updating Site

			else
				EngineHelp

			fi

		else
			EnginHelp

		fi

	# Easy Engine Delete
	elif [ "$2" = "delete" ]
	then
		echo "Delete"

	# Easy Engine Help
	else
		EngineHelp
	fi
	
	#echo "Under Developments !!"

# Easy Engine Config Settings
elif [ "$1" = "config" ]
then

	echo "Under Developments !!"

# Easy Engine Help
else
	EngineHelp
fi