install.sh

#!/bin/bash
if [ "$EUID" -ne 0 ]
	then printf "Please run as root\n"
	exit
fi

install_dir="/usr/share/factorio"
#install_dir="/root/test"

#compressed file extraction function. 0.14 is in tar.gz, and .15 is in tar.xz, for some reason.
function extract () {
	if [ -f $1 ] ; then
		case $1 in
			*.tar.gz)  tar --strip-components=1 -xzf $1 -C $2/$3; printf "Done!\n";;
			*.tar.xz)  tar --strip-components=1 -xf $1 -C $2/$3; printf "Done!\n";;
			*)         printf "Unknown compressiong type can't extract from $1\n"; break;;
		esac
	else
		printf "Unable to access file $1... We'll deal with that later...\n"
	fi
}

#version checker. Will need this in the case node is already installed
function version_gt() {
	test "$(printf '%s\n' "$@" | sort -V | head -n 1)" != "$1";
}

printf "Welcome to 3Ra Gaming's Factorio Web Control Installer!\n\n"
#printf "This tool will automatically check that all required dependancies are installed\n"
#printf "If any are not yet installed, it will attempt to install them.\n\n"
printf "This script should verify all dependancies and will attempt to install them. You will be asked before each dependency is installed.\n"
while true; do
	read -p "Are you currently running Ubuntu 16.04 or higher?  " yn
	case $yn in
		[Yy]* ) break;;
		[Nn]* )
			printf "\nUnfortunately, this installer was built for Ubuntu :(\n\n";
			printf "Please consult the github for manual instructions\n";
			printf "http://www.3ragaming.com/github\n";
			printf "You may also join our Discord and we will do our best to assist you\n";
			printf "http://www.3ragaming.com/discord\n\n";
			exit;;
		* ) echo "Please answer yes[Y] or no[N].";;
	esac
done

#Define dependencies
#depend_arr+=("");
depend_arr=();
depend_arr+=("curl");
depend_arr+=("zip");
depend_arr+=("unzip");
depend_arr+=("tar");
depend_arr+=("gcc");
depend_arr+=("crontab");
depend_arr+=("npm");
depend_arr+=("xz-utils");
depend_arr+=("apache2");
depend_arr+=("php");
depend_arr+=("php-curl");
depend_arr+=("libapache2-mod-php");

depend_needed=;
for depend_item in "${depend_arr[@]}"; do
	if ! type $depend_item &> /dev/null2>&1; then
		depend_needed="$depend_needed $depend_item";
	fi
done

#Install dependencies
echo "will verify install of:$depend_needed";
while true; do
	read -p "Are you ok with installing these now? (you must to continue with install) " yn
	case $yn in
		[Yy]* )
			break;;
		[Nn]* )
			printf "We cannot proceed without these installed.";
			exit;;
		* ) echo "Please answer yes[Y] or no[N].\n";;
	esac
done
apt install --force-yes --yes $depend_needed
printf "\n\nBase Dependencies Installed!\n";

function install_node () {
	url="https://deb.nodesource.com/setup_6.x";
	curl -sL $url | sudo -E bash -
	apt install --force-yes --yes nodejs
}

#check/install node version
printf "Checking if Node JS is installed\n";
if ! type node &> /dev/null2>&1; then
	while true; do
		read -p "Node JS is not installed. Install now?" yn
		case $yn in
			[Yy]* ) break;;
			[Nn]* )
				printf "\nUnfortunately, Node JS is required for the web control to function.\n\n";
				exit;;
			* ) echo "Please answer yes[Y] or no[N].";;
		esac
	done
	install_node;
else
	version=`node -v`;
	supported_node="6.9.5";
	if version_gt $supported_node $version; then
		printf "Only node $supported_node and above is supported.\nYou currently have $version installed\n";
		while true; do
			read -p "Attempt to update now?" yn
			case $yn in
				[Yy]* ) break;;
				[Nn]* )
					printf "\nPlease manually update your node JS then attempt install again.\n\n";
					exit;;
				* ) echo "Please answer yes[Y] or no[N].";;
			esac
		done
		install_node;
	fi
fi
if ! type node &> /dev/null2>&1; then
	printf "for some reason, Node JS was unable to install. Please manually insatll node js version 6.9.5 or greater, ensure that it is installed with \`which node\`, and run this install script again";
	exit;
fi
version=`node -v`;
printf "Node JS $version is installed\n\n";

#Factorio Install
if [ ! -d "$install_dir/" ]; then
	printf "Factorio is not installed.\nAttempting to identify latest stable version...\n";
	latest_version=`curl -v --silent https://updater.factorio.com/get-available-versions 2>&1 | grep stable | awk '{ print $2 }' | tr -d '"'`;
	if [ "${latest_version}" ]; then
		printf "Latest stable Factorio version is $latest_version. ";
		while true; do
			read -p "Download the latest version?  " yn
			case $yn in
					[Yy]* )
						mkdir $install_dir
						download=`curl -JLO# https://www.factorio.com/get-download/$latest_version/headless/linux64`
						download=`echo $download | awk '{ print $5 }' | tr -d "'"`
						if [ "${download}" ]; then
							printf "Downloaded to $download\n"
							printf "extracting to $install_dir/$latest_version/ ... "
							mkdir $install_dir/$latest_version
							extract $download $install_dir $latest_version
							chown -R www-data:www-data $install_dir/
						else
							printf "Unable to download latest version. Don't worry. We can install this later\n"
						fi
						break;;
					[Nn]* ) printf "That's alright. We can download it later.\n"; break;;
					* ) echo "Please answer yes[Y] or no[N].";;
			esac
		done
	else
		printf "Unable to download latest version. Don't worry. We can install this later\n"
	fi
fi

printf "Downloading latest version of Web Control\n";
wget -q https://github.com/3RaGaming/Web_Control/archive/master.zip -O /tmp/master.zip
printf "Unzipping\n";
unzip -u /tmp/master.zip -d /tmp/
printf "Creating directories\n";
mkdir -p /var/www/
printf "Installing Web Control\n";
cp -R /tmp/Web_Control-master/* /var/www/
printf "Adjusting permissions\n";
chown -R www-data:www-data /var/www/
chmod +x /var/www/factorio/manage.sh
chmod +x /var/www/html/update.sh
printf "We need to install a cronjob for managing deleting old file logs and checking file permissions periodically.\n";
printf "We will save your current cronjob file as \"cronjob_old.txt\" in case you need to add anything custom back to it\n";
printf "Press Enter when ready.\r";
read
printf "Activating cron job for permissions\n";
crontab -l > cronjob_old.txt
crontab /var/www/cronjob.txt
printf "Compiling managepgm\n";
cd /var/www/factorio/
printf "\nPreparing to compile the manager, and install discord js.\n";
printf "Some warning messages about discord will appear. These are normal, you may ignore them.\n";
printf "\nPress Enter to continue.\n";
read
gcc -o managepgm -pthread manage.c
printf "Installing Discord.js\n"
npm install discord.js --save
printf "Cleaning temporary files\n"
rm -Rf /tmp/master.zip /tmp/Web_Control-master/
printf "Enabling SSL and restarting web server\n";
a2enmod ssl
a2ensite default-ssl
printf "Checking upload limits\n";
php_ini=`php --ini | grep Loaded | awk '{ print $4 }'`
if [ -f "$php_ini" ]
then
	echo "$php_ini found."
	php_ini_post_max_size_raw=`grep post_max_size $php_ini`
	php_ini_post_max_size=`grep post_max_size $php_ini | awk '{ print $3 }' | tr -dc '0-9'`
	php_ini_upload_max_filesize_raw=`grep upload_max_filesize $php_ini`
	php_ini_upload_max_filesize=`grep upload_max_filesize $php_ini | awk '{ print $3 }' | tr -dc '0-9'`
	if [ "$php_ini_post_max_size" -lt "156" ]; then
		#change it to
		php_ini_post_max_size_raw=`grep post_max_size $php_ini`
		php_ini_most_max_size_new="post_max_size = 156M";
		sed -i -e "s/$php_ini_post_max_size_raw/$php_ini_most_max_size_new/g" "$php_ini"
		printf "Updated post_max_size to 156M\n";
	else
		printf "$php_ini_post_max_size_raw, this will do\n";
	fi
	if [ "$php_ini_upload_max_filesize" -lt "150" ]; then
		#change it
		php_ini_upload_max_filesize_raw=`grep upload_max_filesize $php_ini`
		php_ini_upload_max_filesize_new="upload_max_filesize = 150M";
		sed -i -e "s/$php_ini_upload_max_filesize_raw/$php_ini_upload_max_filesize_new/g" "$php_ini"
		printf "Updated upload_max_filesize to 150M\n";
	else
		printf "$php_ini_upload_max_filesize_raw, this will do\n";
	fi
else
	printf "Unable to location php_ini file.\nYou will be required to change the 'post_max_size' and 'upload_max_filesize' in your php.ini file.";
fi
systemctl restart apache2

#request to remove index.html
file="/var/www/html/index.html";
if [ -f "$file" ]; then
	printf "Ubuntu likes to install a default web file at $file\n";
	printf "This file is un-needed and will make using the web control difficult.";
	while true; do
		read -p "Should we remove this file now? " yn
		case $yn in
				[Yy]* )
					rm -f $file
					printf "File $file removed.\n";
					break;;
				[Nn]* )
					printf "If you have made this file yourself, please rename it (anything but index) so the web control may function properly.\n";
					printf "Press Enter to continue...";
					read
					break;;
				* ) echo "Please answer yes[Y] or no[N].";;
		esac
	done
fi

printf "Installation complete!\n\n";
printf "We will need to setup a user for you to login without discord authentication for now.\n";

function set_username(){
    printf "Please enter a username to create:\n"
    read username
    if [[ -n "$username" ]]; then
        a=$(echo $username | tr -d "\n" | wc -c)
        b=$(echo $username | tr -cd "[:alnum:]" | wc -c)
        if [[ $a != $b ]]; then
            printf "Only letters and numbers are supported for usernames.\n"
            set_username
        else
			g_username=$(echo $username | tr -cd "[:alnum:]")
        fi
    else
        printf "Username cannot be left empty.\n"
        set_username
    fi
}
function set_password(){
    printf "Enter a password:\n"
    read -s password_1
    if [[ -n "$password_1" ]]; then
        a=$(echo -n $password_1 | md5sum | awk '{ print $1 }')
		printf "Re-enter password:\n"
		read -s password_2
		if [[ -n "$password_2" ]]; then
			b=$(echo -n $password_2 | md5sum | awk '{ print $1 }')
			if [[ $a != $b ]]; then
				printf "Passwords do not match.\n"
				set_password
			else
				g_password=$b
			fi
		else
			printf "Passwords do not match.\n"
			set_password
		fi
    else
        printf "Password cannot be left empty.\n"
        set_password
    fi
}

while true; do
	read -p "Would you like to setup this user now? (This will remove all other users from the users.txt file) " yn
	case $yn in
			[Yy]* )
				set_username
				set_password
				printf "Will create user \"$g_username\" with password $g_password\n";
				echo "$g_username|$g_password|admin" > /var/www/users.txt;
				break;;
			[Nn]* ) printf "If you find you cannot login using /altlogin.php, edit the /var/www/users.txt file.\n"; break;;
			* ) echo "Please answer yes[Y] or no[N].";;
	esac
done


printf "Additional users may be added using additional lines in /var/www/users.txt. Passwords are MD5 encrypted\n";
printf "Access your site with https://IP_ADDRESS/altlogin.php\n";
printf "Eventually we will have a splash page for first time logins to assit the rest of the web control setup.\n";
printf "Until then, the rest of the configuration must be done manually in /var/www/factorio/config.json\n";
printf "Press Enter to exit.\n";
read