#!/bin/bash

set -eux # -x for verbose logging to juju debug-log

apt-get update
apt-get -y install bash-completion wget bzip2 git-core less language-pack-en python-software-properties tmux mosh sudo git

## 0k git remote path
GIT_0K_BASE=${GIT_0K_BASE:-"git.0k.io:/var/git"}

## 0k git remote options
GIT_0K_CLONE_OPTIONS=${GIT_0K_CLONE_OPTIONS:-""}




##
## etckeeper
##

apt-get install etckeeper

sed -i 's/#VCS="git"/VCS="git"/g' /etc/etckeeper/etckeeper.conf
sed -i 's/VCS="bzr"/#VCS="bzr"/g' /etc/etckeeper/etckeeper.conf

etckeeper init


##
## Git utilities
##

echo "[alias]
        co = checkout
        com = commit
        st = status
        ci = commit

[color]
	branch = auto
	diff = auto
	interactive = auto
	status = auto

" >> /etc/gitconfig



##
## kal-scripts
##

cat <<EOF >> /etc/apt/sources.list

## vlab's shell libraries
deb http://deb.kalysto.org no-dist kal-alpha kal-beta kal-main

EOF


##
## More shell configurations (prompt, functions)
##

mkdir -p /etc/prompt

cat <<EOF > /etc/prompt/prompt.1.rc
PROMPT_COMMAND=""
parse_git_branch() {
  ref=\$(git symbolic-ref HEAD 2> /dev/null) || return
  echo -en ' (\033[0;32m'\${ref#refs/heads/}'\033[0m)'
}
export PS1="\[\033[0;37m\][\[\033[1;30m\]\u\[\033[0;37m\]@\[\033[1;30m\]\h\[\033[0;37m\]]-[\[\033[1;34m\]\w\[\033[0;37m\]]\\\$(parse_git_branch)\n\[\033[1;37m\]\\$ \[\033[0;37m\]"
EOF

cat <<EOF >> /root/.bashrc

## History management

export HISTCONTROL=ignoredups
export HISTSIZE=50000
shopt -s histappend
PROMPT_COMMAND='history -a'


## Prompt easy management

prompt() {
        prompt_name="prompt.\$1.rc"

        for i in /etc/prompt ~/.prompt; do
                [ -f "\$i/\$prompt_name" ] &&
                        . "\$i/\$prompt_name"
        done
}


## Git log command

function glog() {
    git log --graph --pretty=tformat:%C\(yellow\ normal\)%h%Creset\ %C\(blue\ normal\)%an%Creset\ %s\ %Cgreen%d%Creset -n 20 "\$@"
}


prompt 1

EOF




apt-get install -y kal-scripts python-pip 
pip install shyaml

##
## btrfs install
##

apt-get install btrfs-tools

root=/mnt/btrfs-root

#mkdir /mnt/btrfs-root -p
#mount /mnt/btrfs-root


btrfs subvolume create $root/var
mkdir $root/var/{lib,cache,backups} -p
for d in $root/var/{lib,cache,backups}; do
    btrfs subvolume create $d/lxc
done

for d in $root/srv/{,lxc-datastore{,/config,/data}}; do
    btrfs subvolume create $d
done

mkdir srv/lxc


cat <<EOF >> /etc/fstab

## binds

/mnt/btrfs-root/var/lib/lxc         /var/lib/lxc   none bind,defaults,auto 0 0
/mnt/btrfs-root/var/cache/lxc       /var/cache/lxc none bind,defaults,auto 0 0
/mnt/btrfs-root/var/backups/lxc     /var/backups/lxc none bind,defaults,auto 0 0
/mnt/btrfs-root/srv/lxc-datastore   /srv/lxc-datastore none bind,defaults,auto 0 0


EOF

mkdir -p /var/backups/lxc /srv/lxc-datastore

## 
## lxc tools
##

apt-get install lxc

## mount all

mkdir -p /opt/apps

##
## Install 0k-manage for the handy oe command
##

(
    if ! [ -d "/opt/apps/0k-manage" ]; then
        cd /opt/apps &&
        git clone $GIT_0K_CLONE_OPTIONS "$GIT_0K_BASE/0k/0k-manage.git" &&
        cd /opt/apps/0k-manage &&
        git checkout 0k/dev/master
    fi
)

##
## Install 0k-charms
##

(
    if ! [ -d "/opt/apps/0k-charms" ]; then
        cd /opt/apps &&
        git clone $GIT_0K_CLONE_OPTIONS "$GIT_0K_BASE/0k/0k-charms.git" &&
        cd /opt/apps/0k-manage &&
        git checkout 0k/dev/master
    fi
)


##
## Install lxc-scripts
##

(
    if ! [ -d "/opt/apps/lxc-scripts" ]; then
        cd /opt/apps &&
        git clone $GIT_0K_CLONE_OPTIONS "$GIT_0K_BASE/0k/lxc-scripts.git" &&
        cd /opt/apps/0k-manage &&
        git checkout master &&
        ln -sf /opt/apps/lxc-scripts/bin/lxc-* /usr/local/sbin/ &&  
        ln -sf /opt/apps/lxc-scripts/usr/lib/lxc/templates/lxc-0k-ubuntu-cloud /usr/lib/lxc/templates/
    fi
)

##
## Patch some files
##

(
 cd /etc &&
 cat /opt/apps/lxc-scripts/precise-12.04.patch | patch -p1

)

##
## Install dns waterfall
##

apt-get install -y bind9 dnsmasq


# edit /etc/dnsmaq.conf
echo "
server=$(. /etc/default/lxc && echo "$LXC_ADDR")
interface=lo
no-negcache
log-queries
log-facility=/var/log/dnsmasq.log
" >> /etc/dnsmasq.conf

(
  cd /etc &&
  cat src/bind9.patch | patch -p1 &&
  sed -ri s/%%EXTERNAL_IP%%/$(. /etc/default/lxc && ifip "$HOST_EXTERNAL_DEVICE")
)
mkdir /var/log/named -p &&
chown bind:bind /var/log/named