Automaticall generate unique/predicatable/consistent $PORT for each project based on fingerprinting of `.powder` and make Pow Proxy aware of it.

.env

# custom ENV variables

.powder

example

.powenv

#!/usr/bin/env bash

echo "[.powenv]: PORT: $PORT"

echo "[.powenv]: project path: $(pwd)"

# Detect ".env" file path.
if [ -z $ENV_FILE ]
then ENV_FILE="./.env"
fi

echo "[.powenv]: project .env: $ENV_FILE"

# Load ".env" file.
if [ -f $ENV_FILE ]
then source $ENV_FILE
fi

# Detect unique project file to generate default PORT based on.
for project_id_file in "./.powder" "./package.json"
do
  if [ -f "$project_id_file" ]
  then
    PROJECT_ID_FILE=$project_id_file
    break
  fi
done

echo "[.powenv]: project .env PORT: $PORT"

# Generate default PORT for this project.
if [ -f $PROJECT_ID_FILE ]
then
  # PROJECT_BODY=`cat $PROJECT_ID_FILE | grep -v '^$'`
  PROJECT_MD5=`cat $PROJECT_ID_FILE | grep -v '^$' | md5sum | cut -f1 -d" "`
  PROJECT_NUMBER=`echo $(( 0x${PROJECT_MD5%% *} )) | cut -f2 -d"-"` &>/dev/null
  PROJECT_PORT_RANGE_FROM=3000
  PROJECT_PORT_RANGE_TO=9999
  PROJECT_PORT_DEFAULT=`expr $PROJECT_PORT_RANGE_FROM + $PROJECT_NUMBER % $(expr $PROJECT_PORT_RANGE_TO - $PROJECT_PORT_RANGE_FROM)`
  PROJECT_PORT_OVERRIDE=0

  echo "[.powenv]: project ID FILE: $PROJECT_ID_FILE"
  # echo "[.powenv]: project ID BODY: $PROJECT_BODY"
  echo "[.powenv]: project ID MD5: $PROJECT_MD5"
  echo "[.powenv]: project ID NUMBER: $PROJECT_NUMBER"

  if [ $PROJECT_PORT_OVERRIDE -gt 0 ]
  then
    echo "[.powenv]: override PORT: $PORT => $PROJECT_PORT_DEFAULT"
    PORT=$PROJECT_PORT_DEFAULT
  else
    if [ -z $PORT ]
    then
      echo "[.powenv]: undefined PORT: $PORT => $PROJECT_PORT_DEFAULT"
      PORT=$PROJECT_PORT_DEFAULT
    else
      echo "[.powenv]: defined PORT: $PORT"
    fi
  fi
fi

# Pow environment.
export POW_PROXY_HOST=localhost
export POW_PROXY_PORT=$PORT

# Log
echo "[.powenv]: PROJECT_PORT_DEFAULT: $PROJECT_PORT_DEFAULT"
echo "[.powenv]: POW_PROXY_HOST: $POW_PROXY_HOST"
echo "[.powenv]: POW_PROXY_PORT: $POW_PROXY_PORT"

.powrc

#!/usr/bin/env bash

if [ -f "$rvm_path/scripts/rvm" ] && [ -f ".rvmrc" ]; then
  source "$rvm_path/scripts/rvm"
  source ".rvmrc"
fi

.rvmrc

#!/usr/bin/env bash
rvm use 1.9.3

Gemfile

#!/usr/bin/env ruby
source 'https://rubygems.org'

# https://github.com/Rodreegez/powder
gem 'powder'

# See: https://github.com/spagalloco/pow_proxy
gem 'pow_proxy'

Makefile

all: clean install proxy

install:
	make clean \
	&& npm install \
	&& ./node_modules/bower/bin/bower install \
	&& gem install bundler \
	&& bundle install \
	&& powder link

update:
	npm update \
	&& ./node_modules/bower/bin/bower update
	&& bundle update

clean:
	if [ -e ./node_modules ]; then rm -rf ./node_modules; fi \
	&& if [ -e ./.sass-cache ]; then rm -rf ./.sass-cache; fi \
	&& if [ -e ./.tmp ]; then rm -rf ./.tmp; fi \
	&& if [ -e ./app/components ]; then rm -rf ./app/components; fi \
	&& if [ -e ./dist ]; then rm -rf ./dist; fi \
	&& if [ -e ./tmp ]; then rm -rf ./tmp; fi

server:
	grunt server

build:
	grunt build

open:
	powder open

static:
	make pow-static

proxy:
	make pow-proxy \
	&& make server

pow-static:
	if [ -e ./public ]; then rm -f ./public; fi \
	&& if [ ! -d ./dist ]; then mkdir ./dist; fi \
	&& ln -sf ./dist ./public \
	&& if [ ! -f ./public/index.html ]; then echo "$(PWD)/public/index.html" > ./public/index.html; fi \
	&& if [ -e ./config.ru ]; then rm -f ./config.ru; fi \
	&& tree -LC 1 \
	&& powder restart

pow-proxy:
	if [ -e ./public ]; then rm -f ./public; fi \
	&& if [ -f ./config.ru ]; then rm -f ./config.ru; fi \
	&& if [ ! -e ./config.ru ]; then ln -sf ./.config.ru ./config.ru; fi \
	&& source ./.powenv \
	&& if [ ! -e ./.env ]; then touch ./.env; fi \
	&& sed -e 's/PORT\=.*//g' ./.env > ./.env.old \
	&& echo "PORT=$$POW_PROXY_PORT" > ./.env.new \
	&& cat ./.env.old >> ./.env.new \
	&& cat ./.env.new | grep -v '^$$' > ./.env \
	&& rm ./.env.* \
	&& tree -LC 1 \
	&& powder restart