#! /bin/bash

echo "Backify is starting, looking for configuration file..." >&2

config='backup.cfg'
config_secured='sbackup.cfg'

if config -f "$config"; then
    echo "Configuration found." >&2
else
    echo "Configuration not found" >&2
    exit
fi

if egrep -q -v '^#|^[^ ]*=[^;]*' "$config"; then
  echo "Config file is unclean, cleaning it..." >&2
  egrep '^#|^[^ ]*=[^;&]*'  "$config" > "$config_secured"
  config="$config_secured"
fi

source "$config"

echo "Configuration file loaded" >&2

if [ "$EUID" -ne 0 ]
  then echo "Please run as root"
  exit
fi

function makedir {
timestamp=$(date +%Y%m%d_%H%M)
mkdir /tmp/backify-$timestamp
tmpdir="/tmp/backify-$timestamp"
}

function wwwbackup {
if [ "$www_backup" = true ] then 
    echo "Backing up wwwroot..." >&2
    mkdir -p $tmpdir/wwwdata
    cp -r $www_dir/ $tmpdir/wwwdata/
    echo "Finished" >&2
fi
}

function vhostbackup {
if [ "$vhost_backup" = true ] then 
    echo "Backing up vhosts..." >&2
    mkdir -p $tmpdir/vhosts
    cp -r $vhost_dir/ $tmpdir/vhosts/
    echo "Finished" >&2
fi
}

function logbackup {
if [ "$log_backup" = true ] then 
    echo "Backing up system logs..." >&2
    mkdir -p $tmpdir/syslogs
    cp /var/log/syslog $tmpdir/syslogs/
    cp /var/log/message $tmpdir/syslogs/

    if [ "$fail2ban_log" = true ] then
        cp /var/log/fail2ban.log $tmpdir/syslogs/
    fi

    if [ "$log_backup_web" = true] then
        if [ "$apache" = true ] then
            mkdir -p $tmpdir/apachelogs
            cp -r /var/log/httpd $tmpdir/apachelogs
        fi
        if [ "$nginx" = true ] then
            mkdir -p $tmpdir/nginxlogs
            cp -r /var/log/nginx $tmpdir/nginxlogs
        fi
    fi

    if [ "$log_purge" = true] then
        echo "Purging logs..." >&2
        truncate -s 0 /var/log/syslog 
        truncate -s 0 /var/log/message
        if [ "$apache" = true ] then
            # TODO: removal for .1.2.3 logs
            truncate -s 0 /var/log/httpd/*
        fi
        if [ "$nginx" = true ] then
            # TODO: removal for .1.2.3 logs
            truncate -s 0 /var/log/nginx/*
        fi
        if [ "$fail2ban_log" = true ] then
            truncate -s 0 /var/log/fail2ban.log
        fi
    fi
    echo "Finished" >&2
fi
}

function push {
    if [ "rsync_push" = true ] then
        #Push - Dockerized
        if [ "push_clean" = true ] then
            rm /opt/backify-$timestamp.tar.gz
        fi
    fi
}

function dockerbackup {
    if [ "docker_enabled" = true] then
        if [ "docker_images" = true] then
            echo "Backing up Docker images..." >&2
            for i in `docker inspect --format='{{.Name}}' $(docker ps -q) | cut -f2 -d\/`
            do container_name=$i
            echo -n "$container_name - "
            container_image=`docker inspect --format='{{.Config.Image}}' $container_name`
            mkdir -p $tmpdir/containers/$container_name
            save_dir="$tmpdir/containers/$container_name/$container_name-image.tar"
            docker save -o $save_dir $container_image
            echo "Finished" >&2
done
        fi
    fi
}

function runbackup {
    if [ "enabled" = true] then
        # step 1 : create directory
        makedir
        # step 2 : www backup
        wwwbackup
        # step 3 : vhost backup
        vhostbackup
        # step 4: log backup
        logbackup
        # step 5: docker backup
        dockerbackup
        # archive data
        echo "Creating backup archive..." >&2
        tar -czvf /opt/backify-$timestamp.tar.gz $tmpdir
        # push data to server
        push
        echo "Voila, enjoy the rest of the day" >&2
    fi
}

runbackup