#!/bin/bash
# Copyright (c) 2015-present, Facebook, Inc.
# All rights reserved.
#
# This source code is licensed under the BSD-style license found in the
# LICENSE file in the root directory of this source tree. An additional grant
# of patent rights can be found in the PATENTS file in the same directory.

# ******************************************************************************
# This is an end-to-end test intended to run on CI.
# You can also run it locally but it's slow.
# ******************************************************************************

# Start in tasks/ even if run from root directory
cd "$(dirname "$0")"

# CLI and app temporary locations
# http://unix.stackexchange.com/a/84980
temp_cli_path=`mktemp -d 2>/dev/null || mktemp -d -t 'temp_cli_path'`
temp_app_path=`mktemp -d 2>/dev/null || mktemp -d -t 'temp_app_path'`

function cleanup {
  echo 'Cleaning up.'
  cd $root_path
  # Uncomment when snapshot testing is enabled by default:
  # rm ./packages/react-scripts/template/src/__snapshots__/App.test.js.snap
  rm -rf $temp_cli_path $temp_app_path
}

# Error messages are redirected to stderr
function handle_error {
  echo "$(basename $0): ERROR! An error was encountered executing line $1." 1>&2;
  cleanup
  echo 'Exiting with error.' 1>&2;
  exit 1
}

function handle_exit {
  cleanup
  echo 'Exiting without error.' 1>&2;
  exit
}

function create_react_app {
  node "$temp_cli_path"/node_modules/create-react-app/index.js $*
}

# Exit the script with a helpful error message when any error is encountered
trap 'set +x; handle_error $LINENO $BASH_COMMAND' ERR

# Cleanup before exit on any termination signal
trap 'set +x; handle_exit' SIGQUIT SIGTERM SIGINT SIGKILL SIGHUP

# Echo every command being executed
set -x

# Go to root
cd ..
root_path=$PWD

npm install

# If the node version is < 4, the script should just give an error.
if [ `node --version | sed -e 's/^v//' -e 's/\..\+//g'` -lt 4 ]
then
  cd $temp_app_path
  err_output=`node "$root_path"/packages/create-react-app/index.js test-node-version 2>&1 > /dev/null || echo ''`
  [[ $err_output =~ You\ are\ currently\ running\ Node\ v.+\ but\ create-react-app\ requires\ \>=4\. ]] && exit 0 || exit 1
fi

if [ "$USE_YARN" = "yes" ]
then
  # Install Yarn so that the test can use it to install packages.
  npm install -g yarn@0.17.10 # TODO: remove version when https://github.com/yarnpkg/yarn/issues/2142 is fixed.
  yarn cache clean
fi

# Lint own code
./node_modules/.bin/eslint --ignore-path .gitignore ./

# ******************************************************************************
# First, test the create-react-app development environment.
# This does not affect our users but makes sure we can develop it.
# ******************************************************************************

# Test local build command
npm run build
# Check for expected output
test -e build/*.html
test -e build/static/js/*.js
test -e build/static/css/*.css
test -e build/static/media/*.svg
test -e build/favicon.ico

# Run tests with CI flag
CI=true npm test
# Uncomment when snapshot testing is enabled by default:
# test -e template/src/__snapshots__/App.test.js.snap

# Test local start command
npm start -- --smoke-test

# ******************************************************************************
# Next, pack react-scripts and create-react-app so we can verify they work.
# ******************************************************************************

# Pack CLI
cd $root_path/packages/create-react-app
cli_path=$PWD/`npm pack`

# Go to react-scripts
cd $root_path/packages/react-scripts

# Save package.json because we're going to touch it
cp package.json package.json.orig

# Replace own dependencies (those in the `packages` dir) with the local paths
# of those packages.
node $root_path/tasks/replace-own-deps.js

# Finally, pack react-scripts
scripts_path=$root_path/packages/react-scripts/`npm pack`

# Restore package.json
rm package.json
mv package.json.orig package.json

# ******************************************************************************
# Now that we have packed them, create a clean app folder and install them.
# ******************************************************************************

# Install the CLI in a temporary location
cd $temp_cli_path
npm install $cli_path

# Install the app in a temporary location
cd $temp_app_path
create_react_app --scripts-version=$scripts_path test-app

# ******************************************************************************
# Now that we used create-react-app to create an app depending on react-scripts,
# let's make sure all npm scripts are in the working state.
# ******************************************************************************

# Enter the app directory
cd test-app

# Test the build
npm run build
# Check for expected output
test -e build/*.html
test -e build/static/js/*.js
test -e build/static/css/*.css
test -e build/static/media/*.svg
test -e build/favicon.ico

# Run tests with CI flag
CI=true npm test
# Uncomment when snapshot testing is enabled by default:
# test -e src/__snapshots__/App.test.js.snap

# Test the server
npm start -- --smoke-test

# ******************************************************************************
# Finally, let's check that everything still works after ejecting.
# ******************************************************************************

# Eject...
echo yes | npm run eject

# ...but still link to the local packages
npm link $root_path/packages/babel-preset-react-app
npm link $root_path/packages/eslint-config-react-app
npm link $root_path/packages/react-dev-utils
npm link $root_path/packages/react-scripts

# Test the build
npm run build
# Check for expected output
test -e build/*.html
test -e build/static/js/*.js
test -e build/static/css/*.css
test -e build/static/media/*.svg
test -e build/favicon.ico

# Run tests, overring the watch option to disable it.
# `CI=true npm test` won't work here because `npm test` becomes just `jest`.
# We should either teach Jest to respect CI env variable, or make
# `scripts/test.js` survive ejection (right now it doesn't).
npm test -- --watch=no
# Uncomment when snapshot testing is enabled by default:
# test -e src/__snapshots__/App.test.js.snap

# Test the server
npm start -- --smoke-test

# ******************************************************************************
# Test --scripts-version with a version number
# ******************************************************************************

cd $temp_app_path
create_react_app --scripts-version=0.4.0 test-app-version-number
cd test-app-version-number

# Check corresponding scripts version is installed.
test -e node_modules/react-scripts
grep '"version": "0.4.0"' node_modules/react-scripts/package.json

# ******************************************************************************
# Test --scripts-version with a tarball url
# ******************************************************************************

cd $temp_app_path
create_react_app --scripts-version=https://registry.npmjs.org/react-scripts/-/react-scripts-0.4.0.tgz test-app-tarball-url
cd test-app-tarball-url

# Check corresponding scripts version is installed.
test -e node_modules/react-scripts
grep '"version": "0.4.0"' node_modules/react-scripts/package.json

# ******************************************************************************
# Test --scripts-version with a custom fork of react-scripts
# ******************************************************************************

cd $temp_app_path
create_react_app --scripts-version=react-scripts-fork test-app-fork
cd test-app-fork

# Check corresponding scripts version is installed.
test -e node_modules/react-scripts-fork

# Cleanup
cleanup