#!/bin/bash

# play safe
set -e
set -u

# Standard Debian install

# prepare on hydra and use debproxy for speed

# have dedicated hard-drives for swap and home

# expert install

# hostname: neurodebian
# domain: ''

# Needs to be assured since it got reset to debian
hostname neurodebian  # this is not a permanent change
echo "neurodebian" >| /etc/hostname  # make it permanent
sed -i -e 's/^127\.0\.1\.1.*/127.0.1.1\tneurodebian/g' /etc/hosts

# all file in one partition

# root: not there
# user: brain
# pwd: neurodebian


# Do a minimal install
# --------------------

# All files in one partition/
# just base system, run selection, but no tasks (not even 'Standard system')

# set root password to 'neurodebian' too
#echo "Set root passwd:"
#passwd root

apt-get install --no-install-recommends -y etckeeper

# setup etckeeper
git config --global user.name NeuroDebian
git config --global user.email nd@localhost

# install new stuff
# -----------------

# Add sources.list for backports and neurodebian
wget -O /etc/apt/sources.list.d/neuro.debian.net.list http://neuro.debian.net/lists/squeeze.us-nh

echo "deb http://backports.debian.org/debian-backports squeeze-backports main contrib non-free" > /etc/apt/sources.list.d/backports.debian.org.list
cat << EOT > /etc/apt/preferences.d/backports.debian.org.pref
Package: *
Pin: release a=squeeze-backports
Pin-Priority: 200
EOT

apt-get update -y
# Backports' Release files signed with both ftpmaster and old backports keys
# That causes APT to spit out a warning, but to not confuse users, lets simply
# obtain that key if possible
gpg --keyserver hkp://subkeys.pgp.net --recv-keys 16BA136C && \
        gpg --export 16BA136C | apt-key add - || :

apt-get install -y --allow-unauthenticated neurodebian-archive-keyring
apt-get update -y

# to cheat the VM check
touch /dev/vboxguest

# Assure that corresponding linux headers are installed since otherwise they
# might not be.  There is also a dichotomy between target 686 and installer
# using 486 build of the kernel.  It requires manual build/installation
# of guest additions for 686 at this point. Hence all the ugly logic below
cunamer=`uname -r`
cdarch=${cunamer##*-}
# We carry 686 only
[ $cdarch = '486' ] && darch='686' || darch=$cdarch
apt-get install -y linux-headers-2.6-$cdarch

# Forcefully install guest additions from backports so we are
# compatible with VirtualBox 4.x series
apt-get install -y -t squeeze-backports virtualbox-ose-guest-dkms \
	virtualbox-ose-guest-utils  virtualbox-ose-guest-x11 \
	>| /var/log/initial_setup-dkms.log 2>&1

# to get all the rest stuff in recommends
apt-get install -y dkms neurodebian-guest-additions

if [ "$darch" != "$cdarch" ] ; then
    # Because DKMS builds for currently running kernel, which during
    # installation might be a more generic 486, lets force building for 686
	# and also install necessary headers (will be purged later on anyways)
	apt-get install -y linux-headers-2.6-$darch

	unamer=${cunamer//$cdarch/$darch}
	# First collect information about installed vb additions
	vbg=( `dkms status | grep virtualbox | head -n 1 | tr ',' ' '` )
	echo "I: forcing build and install of guest additions for 686"
	dkms build -m ${vbg[0]} -v ${vbg[1]} -a i686 -k $unamer \
		>| /var/log/initial_setup-dkms-686-build.log 2>&1
	dkms install -m ${vbg[0]} -v ${vbg[1]} -a i686 -k $unamer \
		>| /var/log/initial_setup-dkms-686-install.log 2>&1
fi

# Add brain use into vboxsf group so he gets access to shared folders
# by default
adduser brain vboxsf

# assure at the end that we got right modules build in the right location
find /lib/modules/*$darch -iname vboxsf.ko | grep -q .

apt-get install --no-install-recommends -y \
 gnome-core mc evince bash-completion ntpdate file-roller gnome-utils \
 gnome-themes gnome-disk-utility network-manager-gnome eog vim reportbug \
 software-center gdebi gedit-plugins gnome-media synaptic menu less libxp6

# Clean-up installed development files which got pulled in for
# VM guest additions (to build kernel modules via DKMS)
apt-get purge -y libc6-dev
dpkg -l | awk '/^ii.*[ \t]linux-headers/{print $2;}' | xargs -r apt-get purge -y

# Gnome optional pulled by gnome-core:
apt-get purge -y gnome-core evolution-common evolution libevolution

# And utter cleanup
apt-get -y autoremove

# intermediate cleanup to prevent virtual harddrive from fragmenting too much
find /var/cache/apt/archives/ -name '*.deb' -delete

# cleanup unwanted stuff
# video drivers (all but vesa)
apt-get purge -y $(apt-cache search --names-only --installed xserver-xorg-video | grep xserver-xorg-video | cut -d ' ' -f 1,1) xserver-xorg-video-vesa+
apt-get purge -y brasero

# and whatever is obsolete
apt-get autoremove --purge -y

# custom config
# use NeuroDebian website as default homepage
sed -i -e 's,http://www.debian.org,http://neuro.debian.net,g' /etc/chromium-browser/master_preferences

# reduce grub timeout to speed up boot of VM
sed -i -e 's/GRUB_TIMEOUT=5/GRUB_TIMEOUT=1/g' /etc/default/grub
update-grub

# finally configure geomirror for APT and disable deb-src lists
sed -i -e "s/10.0.0.1:9999/$(dpkg --print-architecture)-geomirror.debian.net/" \
    -e "s/^deb-src/#deb-src/" /etc/apt/sources.list

etckeeper commit "Initial VM setup done"

# Create a link to automatically mounted Shared folder
# Created by the Welcome Wizard
#sudo -u brain ln -s /mnt/host /home/brain/