#!/bin/bash
#############################
### WordOps backup script ###
#############################

# Blue
function wo_lib_echo()
{
    echo $(tput setaf 4)$@$(tput sgr0)
}
# White
function wo_lib_echo_info()
{
    echo $(tput setaf 7)$@$(tput sgr0)
}
# Red
function wo_lib_echo_fail()
{
    echo $(tput setaf 1)$@$(tput sgr0)
}

# Check whether we are running as UID 0
if [[ $EUID -ne 0 ]]; then
    wo_lib_echo_fail "WordOps backup requires elevated privileges"
    wo_lib_echo_fail "Call it as root: wget -qO backup wordops.se/curedata && sudo bash backup"
    exit 100
fi

# Capture errors
function wo_lib_error()
{
    echo "[ `date` ] $(tput setaf 1)$@$(tput sgr0)"
    exit $2
}

# Define variables for later use
wo_branch=$1
readonly wo_log_dir=/var/log/wo/
readonly wo_backup_log=/var/log/wo/backup.log
readonly wo_linux_distro=$(lsb_release -i | awk '{print $3}')
readonly wo_distro_version=$(lsb_release -sc)

# Checking linux distro
if [ "$wo_linux_distro" != "Ubuntu" ] && [ "$wo_linux_distro" != "Debian" ]; then
    wo_lib_echo_fail "WordOps (wo) only supports Ubuntu and Debian at the moment."
    wo_lib_echo_fail "If you are feeling adventurous, you are free to fork WordOps to support"
    wo_lib_echo_fail "other Linux distributions and perhaps even Unix deratives."
    wo_lib_echo_fail "WordOps (wo) only supports Ubuntu 14.04/16.04/18.04, Debian 8.x and Debian 9.x"
    exit 100
fi

# WordOps (wo) only supports Ubuntu/Debian versions that are eligible for support
lsb_release -d | egrep -e "14.04|16.04|18.04|jessie|stretch" &>> /dev/null
if [ "$?" -ne "0" ]; then
    wo_lib_echo_fail "WordOps (wo) only supports Ubuntu 14.04/16.04/18.04, Debian 8.x and Debian 9.x"
    exit 100
fi

# Check whether the log file is in place and otherwise create it
if [ ! -f $wo_backup_log ]; then

    wo_lib_echo "Creating the WordOps (wo) backup log, just a second..."

    # Touch/create two empty log files within the wo_log_dir
    touch /var/log/wo/backup.log

    # Set the ACL to only allow access by the root user and block others
    chmod 700 /var/log/wo/backup.log || wo_lib_error "Whoops, there was an error setting the permissions on the WordOps (wo) backup log file, exit status " $?
fi

function wo_install_duplicity()
{
	if [ ! -f $wo_duplicity_bin ]; then
    	if [ "$wo_linux_distro" == "Ubuntu" ]; then
        	apt-get -y install duplicity python-pip || wo_lib_error "There was an error during dependency installation, exit status " 1
    	elif [ "$wo_linux_distro" == "Debian" ]; then
        	apt-get -y install duplicity python-pip || wo_lib_error "There was an error during dependency installation, exit status " 1
    	fi
    fi
}

function wo_backup_databases()
{
    #
}