#!/bin/bash

set -e

unset GIT_DIR

branch="$(echo "$1" | cut -d/ -f3)"

if [ "$branch" != "master" ] && [ "$branch" != "staging" ]; then
  exit 0
fi

echo "deploying $branch..."

cd /var/www/www.domain.com/build

if [ -d "$branch" ]; then
  cd "$branch"
  git reset --hard HEAD
  git pull origin "$branch"
else
  git clone ../src "$branch"
  cd "$branch"
  git checkout "$branch"
fi

npm install --production
npm dedupe

cd etc
ln -sfn ../../../etc/"$branch"/* ./
cd ..

sudo chgrp -R www-data .

sudo stop "$branch".domain.com &> /dev/null || :;
sudo start "$branch".domain.com

sudo /etc/init.d/nginx reload

echo "$branch deployed successfully"