#!/usr/bin/env bash
# Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
# for details. All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE file.

# Compile flutter tests with a locally built SDK.

set -e

prepareOnly=false
if [ $# -eq 1 ]
then
  if [ $1 = "--prepareOnly" ]
  then
    prepareOnly=true
  fi
fi

if $prepareOnly
then
  echo "Will prepare only!"
fi

checkout=$(pwd)
dart=$checkout/out/ReleaseX64/dart-sdk/bin/dart
sdk=$checkout/out/ReleaseX64/dart-sdk
tmpdir=$(mktemp -d)
cleanup() {
  if ! $prepareOnly
  then
    rm -rf "$tmpdir"
  fi
}
trap cleanup EXIT HUP INT QUIT TERM PIPE
pushd "$tmpdir"

git clone --single-branch -vv \
  https://dart.googlesource.com/external/github.com/flutter/flutter

pushd flutter
bin/flutter config --no-analytics
pinned_dart_sdk=$(cat bin/cache/dart-sdk/revision)
patch=$checkout/tools/patches/flutter-engine/${pinned_dart_sdk}.flutter.patch
if [ -e "$patch" ]; then
  git apply $patch
fi

bin/flutter update-packages
popd

# Directly in temp directory again.
mkdir src
pushd src
git clone --single-branch --depth=1 -vv \
  https://dart.googlesource.com/external/github.com/flutter/engine flutter
mkdir third_party
pushd third_party
ln -s $checkout dart
popd
popd

./src/third_party/dart/tools/patches/flutter-engine/apply.sh || true

mkdir flutter_patched_sdk

$checkout/tools/sdks/dart-sdk/bin/dart --packages=$checkout/.packages $checkout/pkg/front_end/tool/_fasta/compile_platform.dart dart:core -Ddart.vm.product=false -Ddart.developer.causal_async_stacks=true -Ddart.isVM=true --enable-experiment=non-nullable --nnbd-agnostic --single-root-scheme=org-dartlang-sdk --single-root-base=$checkout/ org-dartlang-sdk:///sdk_nnbd/lib/libraries.json vm_outline_strong.dill vm_platform_strong.dill vm_outline_strong.dill
$checkout/tools/sdks/dart-sdk/bin/dart --packages=$checkout/.packages $checkout/pkg/front_end/tool/_fasta/compile_platform.dart --enable-experiment=non-nullable --nnbd-weak --target=flutter dart:core --single-root-scheme=org-dartlang-sdk --single-root-base=src org-dartlang-sdk:///flutter/lib/snapshot/libraries.json vm_outline_strong.dill flutter_patched_sdk/platform_strong.dill flutter_patched_sdk/outline_strong.dill

popd

if $prepareOnly
then
  echo "Preparations complete!"
  echo "Flutter is now in $tmpdir/flutter and the patched sdk in $tmpdir/flutter_patched_sdk"
  echo "You can run the test with $dart --enable-asserts pkg/frontend_server/test/frontend_server_flutter.dart --flutterDir=$tmpdir/flutter --flutterPlatformDir=$tmpdir/flutter_patched_sdk"
else
  $dart --enable-asserts pkg/frontend_server/test/frontend_server_flutter_suite.dart -v --flutterDir=$tmpdir/flutter --flutterPlatformDir=$tmpdir/flutter_patched_sdk $@
fi