#! /bin/bash

FEATURE_BRANCH=

# https://docs.travis-ci.com/user/environment-variables

if [ "$TRAVIS_TAG" != "" ] || [ "$TRAVIS_BRANCH" == "master" ]; then
  exit 0;
fi

if [ "$TRAVIS_PULL_REQUEST_BRANCH" != "" ]; then
  FEATURE_BRANCH="$TRAVIS_PULL_REQUEST_BRANCH";
else
  FEATURE_BRANCH="$TRAVIS_BRANCH";
fi

echo "Attempting to install diagram-js@$FEATURE_BRANCH";

npm install "diagram-js@bpmn-io/diagram-js#$FEATURE_BRANCH";

if [ $? -ne 0 ]; then
  echo "Falling back to diagram-js@develop";

  npm install "diagram-js@bpmn-io/diagram-js#develop";
fi