#!/bin/bash

###########################################################################
# (c) Patrick Geselbracht <Patrick.Geselbracht@hsrw.org>
###########################################################################

SCRIPT_DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )

LOG="$SCRIPT_DIR/log"

debuglog() {
	echo "$1" 2>&1 | tee -a $LOG
}

################################################################################
# Show specified error message and exit the application w/ specified exit code
# Option vars referenced in this function hold the function's parameter values
# 	and should not be confused with the shell script's parameter variables.
# Option 1: Error message
# Option 2: Exit code
# Function writes the error message to stdout and to the ERRORLOG file
################################################################################
die() {
	echo "$1" 2>&1 | tee -a $LOG
	exit $2
}

# UPDATE APT LISTS
echo "Updating apt lists ..."
sudo apt-get update -y &&
echo "Updating apt lists ... Done"

echo
echo

# UPGRADE APT PACKAGES
echo "Upgrade APT packages before installing? [y|n]"
read aptupgrade_yn
case "$aptupgrade_yn" in
	y)
		echo "Upgrading packages handled by apt ..."
		sudo apt-get upgrade -y &&
		echo "Upgrading packages handled by apt ... Done"
		echo
		echo
		;;
	n)
		;;
esac

# INSTALL APACHE2
echo "Install Apache? [y]"
read apache_yn
case "${apache_yn:-y}" in
	y)
		echo "Installing apache2 ..."
		sudo apt-get install -y apache2
		# Fixes apache's "fully qualified domain name" nagging
		echo "ServerName localhost" | sudo tee "/etc/apache2/conf-available/fqdn.conf"
		sudo a2enconf fqdn
		sudo service apache2 reload
		APACHE_INSTALL_LOCATION=`which apache2`
		echo
		echo "Installing apache2 ... Done"
		;;
	n)
		#die "You chose not to install apache2" 2
		;;
esac

# INSTALL PHP5 MODULE
echo "Install php? [n]"
read php_yn
case "${php_yn:-n}" in
	y)
		if [ -z "$APACHE_INSTALL_LOCATION" ];
			then
			die "Apache has not been installed. Please install it before attempting to install the php module." 3
		fi
		echo "Installing php5 module ..."
		sudo apt-get install -y libapache2-mod-php5
		sudo a2enmod php5
		echo
		echo "Installing php5 module ... Done"
		;;
	n)
		;;
esac

# INSTALL MYSQL
echo "Install MySQL? [n]"
read mysql_yn
case "${mysql_yn:-n}" in
	y)
		if [ -z "$APACHE_INSTALL_LOCATION" ];
			then
			die "Apache has not been installed. Please install it before attempting to install the MySQL module" 4
		fi
		echo "Installing MySQL module ..."
		sudo apt-get install -y mysql-server libapache2-mod-auth-mysql php5-mysql
		echo
		echo "Installing MySQL module ... Done"
		echo
		;;
	n)
		;;
esac

sudo service apache2 restart

exit 0