receive

#!/bin/bash

# We need to do a few things here.
# 1) Build the repo
set -e;
APP="$2"; IMAGE="app/$APP"; NAME=$1

META="$HOME/meta"
APPMETA="$META/$NAME"

# Create meta folder
if [ ! -d $META ]; then
  mkdir $META
fi

# Check if the current app already running
if [ ! -f $APPMETA ]; then
 touch $APPMETA # Create the file
fi

METADATA=$(head -1 $APPMETA)
PROCID=$(echo $METADATA | cut -d ' ' -f1)
PORT=$(echo $METADATA | cut -d ' ' -f2)
ISRUNNING=false

# Check if it's empty or not
if [ -z "$PROCID" ]; then
 # Empty
 ISRUNNING=false
 echo "-> No old processes found."
else
 ISRUNNING=true
 echo "-> We found old processes running."
fi

EXPOSE_PORT=3000

function package() {
 # Unpackage the tar and read the Procfile
 echo "Preparing to build..."
 tmpPath="/sd/.tmp/packages/$NAME"
 $(mkdir -p $tmpPath && cat | tar -xC $tmpPath)
 EXPOSE_PORT=$(ruby -e "require 'yaml';puts YAML.load_file('$tmpPath/Procfile')['port']")
}


function build() {
  echo "++ Building..."
  id=$(cat | docker run -i -a stdin progrium/buildstep /bin/bash -c "mkdir -p /app && tar -xC /app")
  test $(docker wait $id) -eq 0
  docker commit $id $IMAGE > /dev/null
  id=$(docker run -d $IMAGE /build/builder)
  docker attach $id
  test $(docker wait $id) -eq 0
  docker commit $id $IMAGE > /dev/null
}

inner_port=5000

# 2) Deploy
function deploy() {
  echo "++ Deploying..."
  # Go and fetch the exposing port number within the Procfile
  #port=$(docker run -
  id=$(docker run -d -p $inner_port -e PORT=$inner_port $IMAGE /bin/bash -c "/start web")
  echo "++ Launched new container"
  if $ISRUNNING ; then
    echo "++ Stopping previous container..."
    docker stop $PROCID
  fi
  echo "++ Cleaning up..."
  rm $APPMETA
  echo "-> Retrieving port number..."
  outer_port=$(docker port $id $inner_port)
  touch $APPMETA
  echo "$id $outer_port" > $APPMETA
  echo "* Setting up port redirects"
  explode $outer_port
  echo "-----> Deploy was successful!"
}

# Expose the container to nginx.
function explode() {
echo $EXPOSE_PORT
echo $1
  cat<<EOF > $HOME/$NAME/nginx.conf

upstream $APP { server 127.0.0.1:80; }
server {
  listen      80;
  server_name *.titananalytics.com, staging.titananalytics.com;
  location    / {
    proxy_pass  http://localhost:$1;
    proxy_http_version 1.1;
    proxy_set_header Upgrade \$http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_set_header Host \$http_host;
  }
}
EOF
  nc -U $HOME/reload-nginx
}

#package
build
deploy