#!/usr/bin/env bash

# This is a script used to deploy the app. After the git repository is updated, this script is

# executed in order to complete the deployment. Feel free to customize with wild abandon. This

# script is executed as root. Thus, it is critically important to sudo untrusted commands.

# Anything from the app should be considered untrusted.

# If any simple command fails, halt the script.

set -e

# Environment variables available to you:

# BASE_DIR - base location for the application (usually /srv/app_name)

# GIT_DIR - location of the app's main git dir

# RAILS_ENV - the environment (production, staging, etc.)

# APP_USER - the user (and group) for the application

TIME=`date +%s`

RELEASE_DIR=$BASE_DIR/releases/$TIME

CURRENT_DIR=$BASE_DIR/current

# We start by copying this directory into a releases directory.

cp -R $GIT_DIR $RELEASE_DIR

# Symlink node_modules

ln -s /srv/javascriptcom/shared/node_modules $RELEASE_DIR/node_modules

# Make the tmp dir

mkdir -p $RELEASE_DIR/tmp

# Make the app own it

chown -R $APP_USER:$APP_USER $RELEASE_DIR

# Run whatever rake tasks this app requires. Generally tasks should follow the the following

# pattern: 'sudo -i -u $APP_USER RAILS_ENV=$RAILS_ENV the_command'. Commands should only be

# executed outside sudo for very, very good reason.

su $APP_USER -l -c "cd $RELEASE_DIR ; npm install"

# Symlink the app

rm -f $CURRENT_DIR

ln -sf $RELEASE_DIR $CURRENT_DIR

# Restart the app

touch $RELEASE_DIR/tmp/restart.txt