# -*- mode: ruby -*-
# vi: set ft=ruby :

# Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
VAGRANTFILE_API_VERSION = "2"

SETUP_BASE = <<-EOF

set -e
set -x
set -v

echo "UseDNS no" >> /etc/ssh/sshd_config
service ssh restart

dpkg --remove-architecture i386 # speeds up update
apt-get update
apt-get -y install kpartx debootstrap lvm2 qemu-utils cryptsetup

export CRYPTPASSPHRASE="#{ENV["BACKUP_ENCRYPTION_KEY"]}"

DF="/destdir/backupimage.dat"
if [ ! -r "$DF" ] ;then
    # internal laptop disk size, adjust to taste
    # here's wishing exfat supported sparse files...
    dd if=/dev/zero of=$DF bs=1 count=0 seek=750G
    losetup /dev/loop0 $DF
    echo "$CRYPTPASSPHRASE" | cryptsetup luksFormat /dev/loop0 -
    echo "$CRYPTPASSPHRASE" | cryptsetup luksOpen /dev/loop0 backup-plain
    pvcreate /dev/mapper/backup-plain
    vgcreate backupvg0 /dev/mapper/backup-plain
    lvcreate -n backup -l 100%FREE backupvg0
    mkfs.ext4 /dev/backupvg0/backup
else
    losetup /dev/loop0 $DF
    echo "$CRYPTPASSPHRASE" | cryptsetup luksOpen /dev/loop0 backup-plain
    pvscan && vgscan && lvscan
fi
mkdir /mnt/backup
mount /dev/backupvg0/backup /mnt/backup

EOF

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
  config.vm.box = "ubuntu-12.04"
  config.vm.box_url = "http://cloud-images.ubuntu.com/vagrant/precise/" + \
    "current/precise-server-cloudimg-amd64-vagrant-disk1.box"
  config.vm.synced_folder ENV["HOME"], "/sourcedir"
  config.vm.synced_folder ENV["DESTDIR"], "/destdir"
  config.vm.provision "shell", inline: SETUP_BASE
  config.vm.provider :virtualbox do |vb|
    vb.customize ["modifyvm", :id, "--memory", "2048"]
  end
end