#!/bin/bash -ex
# Copyright 2017 gRPC authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Source this rc script to prepare the environment for macos builds

# show original open file limit values
launchctl limit maxfiles
ulimit -a

# WARNING: TRY TO KEEP THIS FILE AS LEAN AS POSSIBLE
# The rules:
# - think twice before adding installer that takes long time (builds are already slow)
# - do not add any steps that are flaky (builds will become flaky)
# - try adding a dependency under a language-specific section first (reduces latency and increases build stability)
# - only add stuff that you absolutely need for your builds to work (add comment to explain why its needed)

# Disable HOMEBREW update to avoid new updates which potentially have problems.
# Brew packages installed when Kokoro image was built tend to have less conflict.
export HOMEBREW_NO_AUTO_UPDATE=1

# Dump the brew configuration for debugging just in case. Check "Core tap HEAD" field
# because it should be the same as below unless it's been updated.
# - Kokoro MacOS Mojave: 27fa87c94a6cf7be40fc8f8fc96bc7c387b7781e
brew config

# Add GCP credentials for BQ access
pip install --user google-api-python-client oauth2client six==1.16.0
export GOOGLE_APPLICATION_CREDENTIALS=${KOKORO_GFILE_DIR}/GrpcTesting-d0eeee2db331.json
DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"

# If this is a PR using RUN_TESTS_FLAGS var, then add flags to filter tests
if [ -n "$KOKORO_GITHUB_PULL_REQUEST_NUMBER" ]; then
  export RUN_TESTS_FLAGS="--filter_pr_tests --base_branch origin/$KOKORO_GITHUB_PULL_REQUEST_TARGET_BRANCH $RUN_TESTS_FLAGS"
fi

if [ "${PREPARE_BUILD_INSTALL_DEPS_RUBY}" == "true" ]
then
  # Fetch keys per https://rvm.io/rvm/install
  gpg_recv_keys_success=0
  for ((i=0;i<5;i++)); do
    # Use the Ubuntu keyserver instead of pool.sks-keyservers.net because sks-keyservers is now deprecated.
    GPG_KEYSERVER_ADDRESS="keyserver.ubuntu.com"
    gpg --keyserver "hkp://${GPG_KEYSERVER_ADDRESS}" --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB \
      && gpg_recv_keys_success=1
    [[ "$gpg_recv_keys_success" == 1 ]] && break
    sleep 3
  done
  [[ "$gpg_recv_keys_success" == 1 ]] || exit 1
  rvm get stable # Per https://stackoverflow.com/questions/65477613/rvm-where-is-ruby-3-0-0
  source $HOME/.rvm/scripts/rvm
  for RUBY_VERSION in 2.5.0 2.7.0 3.0.0; do
    time rvm install "ruby-${RUBY_VERSION}"
    time gem install bundler -v 1.17.3 --no-document
    time gem install rake-compiler --no-document
  done;
  rvm use 2.5.0 --default
  time gem install cocoapods --version 1.3.1 --no-document
  rvm osx-ssl-certs status all
  rvm osx-ssl-certs update all
fi

if [ "${PREPARE_BUILD_INSTALL_DEPS_OBJC}" == "true" ]
then
  # cocoapods
  export LANG=en_US.UTF-8
  time gem install cocoapods --version 1.7.2 --no-document
  # pre-fetch cocoapods master repo's most recent commit only
  mkdir -p ~/.cocoapods/repos
  time git clone --depth 1 https://github.com/CocoaPods/Specs.git ~/.cocoapods/repos/master

  # Needed for ios-binary-size
  time pip install --user -r $DIR/requirements.macos.txt

  # Store intermediate build files of ObjC tests into /tmpfs
  # TODO(jtattermusch): this has likely been done to avoid running
  # out of disk space when running ios-binary-size tests, but
  # it would be good to revisit.
  mkdir /tmpfs/Build-ios-binary-size
  ln -s /tmpfs/Build-ios-binary-size src/objective-c/examples/Sample/Build
  mkdir -p /tmpfs/DerivedData
  rm -rf ~/Library/Developer/Xcode/DerivedData
  mkdir -p ~/Library/Developer/Xcode
  ln -s /tmpfs/DerivedData ~/Library/Developer/Xcode/DerivedData
fi

if [ "${PREPARE_BUILD_INSTALL_DEPS_PYTHON}" == "true" ]
then
  # python
  time pip install --user -r $DIR/requirements.macos.txt
  time pip install --user --upgrade virtualenv Mako tox setuptools==44.1.1 twisted

  # Install Python 3.7 if it doesn't exist
  if [ ! -f "/usr/local/bin/python3.7" ]; then
    time curl -O https://www.python.org/ftp/python/3.7.0/python-3.7.0-macosx10.9.pkg
    echo "ee4ad46ab8cd226ffc8df56d48acfdf7daa2714a9c51e6dc6262fc0b25519578  python-3.7.0-macosx10.9.pkg" > /tmp/python_installer_checksum.sha256
    shasum -c /tmp/python_installer_checksum.sha256
    time sudo installer -pkg ./python-3.7.0-macosx10.9.pkg -target /
  fi

  # Install Python 3.8 if it doesn't exist
  if [ ! -f "/usr/local/bin/python3.8" ]; then
    time curl -O https://www.python.org/ftp/python/3.8.0/python-3.8.0-macosx10.9.pkg
    echo "30961fe060da9dc5afdc4e789a57fe9bcc0d20244474e9f095d7bfc89d2e1869  python-3.8.0-macosx10.9.pkg" > /tmp/python_installer_checksum.sha256
    shasum -c /tmp/python_installer_checksum.sha256
    time sudo installer -pkg ./python-3.8.0-macosx10.9.pkg -target /
  fi

  # Install Python 3.9 if it doesn't exist
  if [ ! -f "/usr/local/bin/python3.9" ]; then
    time curl -O https://www.python.org/ftp/python/3.9.0/python-3.9.0-macosx10.9.pkg
    echo "dadee1d10c1a8ed58bb64ec7409a48c9fe38599791eaaea29303ee59fb95dfeb  python-3.9.0-macosx10.9.pkg" > /tmp/python_installer_checksum.sha256
    shasum -c /tmp/python_installer_checksum.sha256
    time sudo installer -pkg ./python-3.9.0-macosx10.9.pkg -target /
  fi

  # Install Python 3.10 if it doesn't exist
  if [ ! -f "/usr/local/bin/python3.10" ]; then
    time curl -O https://www.python.org/ftp/python/3.10.0/python-3.10.0rc1-macos11.pkg
    echo "5933d3d72438b03742d2bb3c8d6cb0e5db165d7110bbc95dac8016f5e31fae7b  python-3.10.0rc1-macos11.pkg" > /tmp/python_installer_checksum.sha256
    shasum -c /tmp/python_installer_checksum.sha256
    time sudo installer -pkg ./python-3.10.0rc1-macos11.pkg -target /
  fi
fi

if [ "${PREPARE_BUILD_INSTALL_DEPS_CSHARP}" == "true" ]
then
  # Disable some unwanted dotnet options
  export NUGET_XMLDOC_MODE=skip
  export DOTNET_SKIP_FIRST_TIME_EXPERIENCE=true
  export DOTNET_CLI_TELEMETRY_OPTOUT=true
fi

if [ "${PREPARE_BUILD_INSTALL_DEPS_PHP}" == "true" ]
then
  # It's required to update the brew because it won't work with the default version Kokoro has.
  # This can be fragile, though because the future version of brew can break. In that case,
  # please consider to fix the certain version like https://github.com/grpc/grpc/pull/24837.
  brew update || true
  brew config

  # Install PHP 7.3 explictly to address missing php header files and
  # to work well with the pre-installed phpunit 8.4
  brew install php@7.3 || true
  export LDFLAGS="-L/usr/local/opt/php@7.3/lib $(LDFLAGS)"
  export CPPFLAGS="-I/usr/local/opt/php@7.3/include $(CPPFLAGS)"
  export PATH="/usr/local/opt/php@7.3/bin:/usr/local/opt/php@7.3/sbin:$PATH"

  # Workaround for https://github.com/Homebrew/homebrew-core/issues/41081
  mkdir -p /usr/local/lib/php/pecl
fi

# TODO(jtattermusch): better debugging of clock skew, remove once not needed
date

time git submodule update --init