#!/usr/bin/env bash

# WARNING: NGBUILDS_IO_KEY should NOT be printed.
set +x -eu -o pipefail


readonly INPUT_DIR=dist/
readonly OUTPUT_FILE=/tmp/snapshot.tar.gz
readonly AIO_BUILDS_DOMAIN=ngbuilds.io
readonly UPLOAD_URL=https://$AIO_BUILDS_DOMAIN/create-build/$TRAVIS_PULL_REQUEST/$TRAVIS_PULL_REQUEST_SHA
readonly DEPLOYED_URL=https://pr$TRAVIS_PULL_REQUEST-$TRAVIS_PULL_REQUEST_SHA.$AIO_BUILDS_DOMAIN
readonly skipBuild=$([[ "$1" == "--skip-build" ]] && echo "true" || echo "");
readonly relevantChangedFilesCount=$(git diff --name-only $TRAVIS_COMMIT_RANGE | grep -P "^(?:aio|packages)/(?!.*[._]spec\.[jt]s$)" | wc -l)

cd "`dirname $0`/.."

# Do not deploy unless this PR has touched relevant files: `aio/` or `packages/` (except for spec files)
if [[ $relevantChangedFilesCount -eq 0 ]]; then
  echo "Skipping deploy because this PR did not touch any relevant files."
  exit 0
fi

# Do not deploy unless this PR meets certain preconditions.
readonly preverifyExitCode=$(./aio-builds-setup/scripts/travis-preverify-pr.sh && echo 0 || echo $?)
case $preverifyExitCode in
  0)
    # Preconditions met: Deploy
    ;;
  1)
    # An error occurred: Fail the script
    exit 1
    ;;
  2)
    # Preconditions not met: Skip deploy
    echo "Skipping deploy because this PR did not meet the preconditions."
    exit 0
    ;;
  *)
    # Unexpected exit code: Fail the script
    echo "Unexpected pre-verification exit code: $preverifyExitCode"
    exit 1
    ;;
esac

# Build the app
if [ "$skipBuild" != "true" ]; then
  yarn build
fi
tar --create --gzip --directory "$INPUT_DIR" --file "$OUTPUT_FILE" .

# Deploy to staging
exec 3>&1
readonly httpCode=$(
  curl --include --location --request POST --silent --write-out "\nHTTP_CODE: %{http_code}\n" \
       --header "Authorization: Token $NGBUILDS_IO_KEY" --data-binary "@$OUTPUT_FILE" "$UPLOAD_URL" \
  | sed 's/\r\n/\n/' \
  | tee /dev/fd/3 \
  | tail -1 \
  | sed 's/HTTP_CODE: //'
)

# Exit with an error if the request failed.
# (Ignore 409 failures, which mean trying to re-deploy for the same PR/SHA.)
if [ $httpCode -lt 200 ] || ([ $httpCode -ge 400 ] && [ $httpCode -ne 409 ]); then
  exit 1
fi

# Run PWA-score tests
yarn test-pwa-score -- "$DEPLOYED_URL" "$MIN_PWA_SCORE"

cd -