#!/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/wheezy.us-nh

# Development versions (TODO: comment out upon finishing)
#cat /etc/apt/sources.list.d/neuro.debian.net.list | sed -e 's,/debian ,/debian-devel ,g' \
#	>| /etc/apt/sources.list.d/neuro.debian.net-devel.list

## No backports yet
## echo "deb http://backports.debian.org/debian-backports wheezy-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=wheezy-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-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
[ $cdarch = '486' ] && darch='686-pae' || darch=$cdarch
apt-get install -y linux-headers-$cdarch

## # Forcefully install guest additions from backports so we are
## # compatible with VirtualBox 4.x series
## apt-get install -y -t wheezy-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-$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

# Prune DKMS's build -- should be no need to carry it around
find /var/lib/dkms -iname build | xargs -r rm -rf

# 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 .

# That was for GNOME
# 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

apt-get install --no-install-recommends -y \
 mc evince bash-completion ntpdate file-roller \
 eog vim reportbug \
 software-center synaptic menu less libxp6 \
 task-xfce-desktop lightdm zenity \
 chromium-browser \
 sudo neurodebian-desktop update-notifier \
 bc

# Assure having xfce4 terminal and it being default one and other handy
# XFCE4 components
apt-get install -y xfce4-terminal thunar-archive-plugin
apt-get install --no-install-recommends -y gedit yelp

# Do not even try to deal with alternatives -- it will be the one and would puke
# update-alternatives --set x-terminal-emulator /usr/bin/xfce4-terminal

# XXX last ones are actually pulled it by neurodebian-guest-additions whenever we
# resolve their destiny ;-)   although it might be pooling too much, eg exim4

# 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 --force-yes $(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 freepats

# Seems to be not used by any installed piece
apt-get purge -y libwebkitgtk-1.0-0

# 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*/master_preferences

# Place default XFCE4 panel config, otherwise a dialog appears
# Thanks go to cavalier@freenode IRC for the hint
xfdir=/home/brain/.config/xfce4/xfconf/xfce-perchannel-xml
mkdir -p $xfdir
cp /etc/xdg/xfce4/panel/default.xml $xfdir/xfce4-panel.xml
chown brain.brain -R /home/brain/.config

# 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
cp /etc/apt/sources.list /etc/apt/sources.list.orig
sed -i -e "s,\(deb\(\|-src\) http://\)[^/]*/debian,\1http.debian.net/debian,g" \
    -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/