#!/bin/bash
#
#  Node Kick Start
#  - Builds a node.js server
#  - Installs all dependencies

apt-get install build-essential

# Update and install NodeJS
sudo apt-get update
sudo apt-get install -y g++ curl libssl-dev apache2-utils
sudo apt-get install -y git-core
sudo git clone --depth 1 https://github.com/joyent/node.git
cd node
git checkout v0.4.7
./configure --prefix=/usr
make
sudo make install


##################################################


# Install NPM
git clone git://github.com/isaacs/npm.git
cd npm
PATH=/usr/local/bin:$PATH
make install


##################################################


# Setup git remote master

if [ "$1" != "" ]; then
  git clone $1 ~/www
else
  mkdir ~/www
  cd ~/www
  npm install express stylus mongodb mongoose jade socket.io connect-mongodb
fi

mkdir ~/repo
cd ~/repo
git init --bare


##################################################


# Create git hook
cat > ~/repo/hooks/post-receive << EOF

#!/bin/sh
GIT_WORK_TREE=/root/www
export GIT_WORK_TREE
git checkout -f
EOF

chmod +x ~/repo/hooks/post-receive


##################################################


# Install HAProxy
wget http://haproxy.1wt.eu/download/1.5/src/devel/haproxy-1.5-dev6.tar.gz
tar xzf haproxy-1.5-dev6.tar.gz
cd haproxy*
make install


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# HAProxy config
mkdir /etc/haproxy
cat > /etc/haproxy/haproxy.cfg << EOF
global
  maxconn 4096

defaults
  mode http
  
frontend all 0.0.0.0:80
  timeout client 86400000
  default_backend www_nodejs
  acl is_websocket hdr(upgrade) -i websocket
  acl is_websocket hdr_beg(host) -i ws
  
  use_backend www_nodejs if is_websocket
  
backend www_nodejs
  option forwardfor
  timeout server 86400000
  timeout connect 4000
  server nodejs 127.0.0.1:3000 weight 1 maxconn 10000 check

EOF

# Test haproxy config
haproxy -c -f /etc/haproxy/haproxy.cfg


##################################################


# Install MongoDB
curl http://downloads.mongodb.org/linux/mongodb-linux-i686-1.8.1.tgz > mongo.tgz
tar xzf mongo.tgz
cp -R mongodb-linux-i686-1.8.1/bin/* /usr/bin/
sudo mkdir -p /data/db
sudo chown `id -u` /data/db


##################################################


# Install Node.js Upstart
sudo apt-get install -y upstart

cat > /etc/init/node.conf << EOF
#!upstart
description "node.js server"
author      "joe"

start on startup
stop on shutdown

script
    export HOME="/root"

    exec /usr/bin/node $HOME/www/app.js 2>&1 >> /var/log/node.log
end script
EOF

chmod +x /etc/init/node.conf

#Install HAProxy Upstart
cat > /etc/init/haproxy.conf << EOF
#!upstart
description "haproxy server"
author      "joe"

start on startup
stop on shutdown

script
    export HOME="/root"

    exec /usr/local/sbin/haproxy -f /etc/haproxy/haproxy.cfg
end script
EOF

chmod +x /etc/init/haproxy.conf


#Install Monit Upstart
cat > /etc/init/monit.conf << EOF
#!upstart
description "monit server"
author      "joe"

start on startup
stop on shutdown

script
    export HOME="/root"

    /usr/sbin/monit -d 30 -c /etc/monit/monitrc
end script
EOF

chmod +x /etc/init/monit.conf


#Install Mongo Upstart
cat > /etc/init/mongo.conf << EOF
#!upstart
description "Mongo DB server"
author      "joe"

start on startup
stop on shutdown

script
    export HOME="/root"

    exec /usr/bin/mongod
end script
EOF

chmod +x /etc/init/mongo.conf

##################################################


# Install Monit
sudo apt-get install -y monit

cat > /etc/monit/monitrc << EOF
#!monit
set logfile /var/log/monit.log

check host nodejs with address 127.0.0.1
    start program = "/sbin/start node"
    stop program  = "/sbin/stop node"
    if failed port 3000 protocol HTTP
        request /
        with timeout 10 seconds
        then restart
EOF