#!/bin/bash

cat > /dev/shm/rotate_inject << EOC
/var/log/${0##*/} {
    rotate 31
    compress
    missingok
}
EOC
logrotate -fs /dev/shm/rotate_inject.state /dev/shm/rotate_inject
rm -f /dev/shm/rotate_inject /dev/shm/rotate_inject.state

set -e

mountpoint=${1:-/media/backup}
backupdir=$mountpoint/backup
archives=$mountpoint/archives
incremental=30

PATH=/usr/sbin:/usr/bin:/sbin:/bin

test -d $mountpoint/
grep -qw $mountpoint /proc/mounts

test -d $archives || mkdir -p $archives

for i in $(seq $incremental -1 1); do
    if test -e $archives/${backupdir##*/}.$i; then
        mv $archives/${backupdir##*/}.$i $archives/${backupdir##*/}.$((i+1))
    fi
done

rsync_opt=('-rlvzx' '--times' '--delete' '--omit-link-times')
if test -d $backupdir; then
    mv $backupdir $archives/${backupdir##*/}.1
#    if test $(date +%u) -ne 1; then # real copy every monday
        rsync_opt+=("--link-dest=$archives/${backupdir##*/}.1")
#    fi
fi

rm -fr $archives/${backupdir##*/}.$((incremental+1))

filelist=$(mktemp --dry-run /dev/shm/XXXXXXXX)
cat > $filelist << EOL
/home/sms/bot
/home/sms/bot.conf
/home/sms/missed-calls
/home/sms/missed-calls.conf
/home/imapfilter/.imapfilter/config.lua
/home/imapfilter/authorized.lua
/home/imapfilter/contact@paris12.pcf.fr.lua
/home/imapfilter/printscript.model
/home/synapse/homeserver.yaml
/root/inject
/root/iptables.rules
/root/iptables.norules
/var/www/grav/user/themes/pcf-12
/var/www/nextcloud/config/config.php
EOL
rsync ${rsync_opt[@]} --files-from=$filelist / $backupdir/ >> /var/log/${0##*/} 2>&1
rm $filelist

rsync ${rsync_opt[@]} --exclude="/etc/ssh/ssh_host_*" /etc $backupdir/ >> /var/log/${0##*/} 2>&1

rsync ${rsync_opt[@]} --exclude="plugins" --exclude="themes" /var/www/grav/user $backupdir/var/www/grav/ >> /var/log/${0##*/} 2>&1

mkdir -p $backupdir/databases

mysqldump -u owncloud_usr --password=$(awk -F"'" '/dbpassword/{print $4}' /var/www/nextcloud/config/config.php) --skip-comments owncloud > $backupdir/databases/owncloud.db

mysqldump -u sms --password=$(< /home/sms/secret.sms) --skip-comments sms > $backupdir/databases/sms.db

#echo -en ".output $backupdir/databases/synapse.db\n.dump\n.quit\n" | sqlite3 /home/synapse/homeserver.db

#echo -en ".output $backupdir/databases/synapse.schema\n.schema\n.quit\n" | sqlite3 /home/synapse/homeserver.db

exit 0