#!/usr/bin/env bash

set -u -e -o pipefail

# see https://circleci.com/docs/2.0/env-vars/#circleci-built-in-environment-variables
CI=${CI:-false}

cd "$(dirname "$0")"

# basedir is the workspace root
readonly basedir=$(pwd)/..

# Skip all integration tests that are now handled by angular_integration_test except
# the tests that are tracked for payload size; these are:
#   - cli-hello-world*
#   - hello_world__closure
readonly TEST_DIRS=$(find $(ls) -maxdepth 0 -type d \( -name "cli-hello-world*" -or -name "hello_world__closure" \))

# When running on the CI, we track the payload size of various integration output files. Also
# we shard tests across multiple CI job instances. The script needs to be run with a shard index
# and the maximum amount of shards available for the integration tests on the CI.
# For example: "./run_tests.sh {SHARD_INDEX} {MAX_SHARDS}".
if $CI; then
  source ${basedir}/scripts/ci/payload-size.sh

  readonly SHARD_INDEX=${1:?"No shard index has been specified."}
  readonly MAX_SHARDS=${2:?"The maximum amount of shards has not been specified."}

  # Determines the tests that need to be run for this shard index.
  readonly RUN_TESTS=$(node ./get-sharded-tests.js --shardIndex ${SHARD_INDEX} --maxShards ${MAX_SHARDS} ${TEST_DIRS})

  # NB: we don't run build-packages-dist.js because we expect that it was done
  # by an earlier job in the CircleCI workflow.
else
  # Not on CircleCI so let's build the packages-dist directory.
  # This should be fast on incremental re-build.
  node ${basedir}/scripts/build-packages-dist.js

  # If we aren't running on CircleCI, we do not shard tests because this would be the job of
  # Bazel eventually. For now, we just run all tests sequentially when running locally.
  readonly RUN_TESTS=${TEST_DIRS}
fi

echo "Running integration tests: ${RUN_TESTS}"

# Workaround https://github.com/yarnpkg/yarn/issues/2165
# Yarn will cache file://dist URIs and not update Angular code
export readonly cache=.yarn_local_cache
function rm_cache {
  rm -rf $cache
}
rm_cache
mkdir $cache
trap rm_cache EXIT

for testDir in ${RUN_TESTS}; do
  [[ -d "$testDir" ]] || continue

  echo ""
  echo "######################################################################"
  echo "Running integration test $testDir"
  echo "######################################################################"

  (
    cd $testDir
    rm -rf dist

    # Ensure the versions of (non-local) dependencies are exact versions (not version ranges) and
    # in-sync between `package.json` and the lockfile.
    # (NOTE: This must be run before `yarn install`, which updates the lockfile.)
    node ../check-dependencies .

    yarn install --cache-folder ../$cache
    yarn test || exit 1

    # Track payload size for cli-hello-world* tests, plus hello_world__closure
    if $CI && ([[ $testDir =~ cli-hello-world ]] || [[ $testDir == hello_world__closure ]]); then
      if ([[ $testDir =~ cli-hello-world ]]); then
        yarn build
      fi

      trackPayloadSize "$testDir" "dist/*.js" true "${basedir}/integration/_payload-limits.json"
    fi

    # remove the temporary node modules directory to keep the source folder clean.
    rm -rf node_modules
  )
done

if $CI && [[ "$SHARD_INDEX" == "0" ]]; then
  trackPayloadSize "umd" "../dist/packages-dist/*/bundles/*.umd.min.js" false
fi