#!/bin/bash

#===============================================================================
# DESCRIPTION:
#===============================================================================
# This script creates a build of the project ready to be uploaded to beanstalk.
# Requires pyton 2.7.x

#===============================================================================
# COMMON ISSUES:
#===============================================================================
# -If you upload the output to a sample application, it will fail.
# -Version format must be 0.0.0

#===============================================================================
# CONSTANTS
#===============================================================================
CURRENT_VERSION="1.0.0"
OUTPUT_NAME="file-name-without-extension"
PRODUCTION_SETTINGS_JSON="./your-project-directory/settings-prod.json"
PROJECT_DIRECTORY="./your-project-directory"
OUTPUT_DIRECTORY="./the-output-directory"
ROOT_URL="http://www.SOMEENVIRONMENT-env.us-west-2.elasticbeanstalk.com"
MONGO_URL="none"

#===============================================================================
# SAY HELLO
#===============================================================================
initial_directory=$(pwd)  #  This file's local path
clear
echo "COOKING OUTPUT"
echo "========================================================="

#===============================================================================
# RAW PROJECT BUILD
#===============================================================================
echo "> BUILDING RAW PROJECT"
cd $initial_directory
cd $PROJECT_DIRECTORY
rm -f -R "../build/bundle"
meteor build --directory ../build/

#===============================================================================
# SET PRODUCTION ENVIRONMENT VARIABLES
#===============================================================================
cd $initial_directory
json=`cat $PRODUCTION_SETTINGS_JSON`
cd $OUTPUT_DIRECTORY/bundle
mkdir -p .ebextensions
echo "option_settings:" >> .ebextensions/environment.config
echo "  - option_name: MONGO_URL" >> .ebextensions/environment.config
echo "    value: $MONGO_URL" >> .ebextensions/environment.config
echo "option_settings:" >> .ebextensions/environment.config
echo "  - option_name: ROOT_URL" >> .ebextensions/environment.config
echo "    value: "$ROOT_URL"" >> .ebextensions/environment.config
echo "files:" >> .ebextensions/environment.config
echo " '/tmp/settings.json':" >> .ebextensions/environment.config
echo "    content : |" >> .ebextensions/environment.config
echo "        "$json >> .ebextensions/environment.config
echo "option_settings:" >> .ebextensions/environment.config
echo "  - namespace:  aws:elasticbeanstalk:application:environment" >> .ebextensions/environment.config
echo "    option_name: METEOR_SETTINGS_FILE" >> .ebextensions/environment.config
echo "    value: '/tmp/settings.json'" >> .ebextensions/environment.config
chmod 444 .ebextensions/environment.config
echo "> ADDING 'settings.json' AS ENV VAR"

#===============================================================================
# CREATE PACKAGE.JSON
#===============================================================================
cd $initial_directory
cd $OUTPUT_DIRECTORY/bundle

# Write base package.json
echo '{
  "name": "'$OUTPUT_NAME'",
  "version": "'$CURRENT_VERSION'",
  "scripts": {
    "start": "node main.js"
  },
  "dependencies": {
  }
}' > ./package.json

# Add dependencies from meteor in packages.json
# Then add extra dependencies defined by us.
EXTRA_DEPENDENCIES='{"forever": "*"}'
meteor_packages=$(cat ./programs/server/package.json)
packages=$(cat ./package.json)
packages_updated=`python <<END
import json;
# We cannot operate directly bash variables, so we make a copy.
a = $packages
b = $meteor_packages
a['dependencies'] = b['dependencies']
for key, value in $EXTRA_DEPENDENCIES.iteritems():
    a['dependencies'].update({key: value})
print json.dumps(a, sort_keys=False, indent=4, separators=(',', ': '));
END`
echo "$packages_updated" > ./package.json
chmod 444 ./package.json
echo "> ADDING 'package.json'"

#===============================================================================
# ZIP OUTPUT
#===============================================================================
cd $initial_directory
cd $OUTPUT_DIRECTORY/bundle
zip -FSrq "../$OUTPUT_NAME-$CURRENT_VERSION.zip" .
echo "> ZIP THE OUTPUT"

#===============================================================================
# CLEAN THE HOUSE
#===============================================================================
cd $initial_directory
cd $OUTPUT_DIRECTORY
rm -R -f ./bundle
echo "> CLEAN THE HOUSE"

#===============================================================================
# SAY GOODBYE
#===============================================================================
echo "========================================================="
echo "YOU CAN UPLOAD THE PROJECT TO A BEANSTALK ENVIRONMENT NOW"