#!/bin/bash
GIT_DIR="/home/developideas/project.git"
TARGET="/home/developideas/project"
BRANCH="master"
PM2_NAME="Project"

while read oldrev newrev ref
do
  # only checking out the master (or whatever branch you would like to deploy)
  if [ "$ref" = "refs/heads/$BRANCH" ]
  then
    echo 'post-receive: Triggered.'
    cd $TARGET
    echo 'post-receive: git check out…'
    git --git-dir=$GIT_DIR --work-tree=$TARGET checkout $BRANCH -f
    echo 'post-receive: npm install…'
    npm install
    echo 'post-receive: → done.'
    pm2 restart -s $PM2_NAME
    echo 'post-receive: app started successfully with pm2.'
  else
    echo "Ref $ref received. Doing nothing: only the ${BRANCH} branch may be deployed on this server."
  fi
done