#!/usr/bin/env bash

set -euxo pipefail

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE:-$0}")"; pwd)"
WORKSPACE_DIR="${ROOT_DIR}/.."

PY_VERSIONS=("3.7"
             "3.8"
             "3.9"
             "3.10"
             )

bazel_preclean() {
  "${WORKSPACE_DIR}"/ci/run/bazel.py preclean "mnemonic(\"Genrule\", deps(//:*))"
}

get_python_version() {
  python -s -c "import sys; sys.stdout.write('%s.%s' % sys.version_info[:2])"
}

is_python_version() {
  local expected result=0
  expected="$1"
  case "$(get_python_version).0." in
    "${expected}".*) ;;
    *) result=1;;
  esac
  case "$(pip --version | tr -d "\r")" in
    *" (python ${expected})") ;;
    *) result=1;;
  esac
  return "${result}"
}

refreshenv() {
  # https://gist.github.com/jayvdb/1daf8c60e20d64024f51ec333f5ce806
  powershell -NonInteractive - <<\EOF
Import-Module "$env:ChocolateyInstall\helpers\chocolateyProfile.psm1"

Update-SessionEnvironment

# Print out the list of env vars we're going to export.
# Sometimes the bash source fails, this will help with debugging.
gci env:

# Round brackets in variable names cause problems with bash
Get-ChildItem env:* | %{
  if (!($_.Name.Contains('('))) {
    $value = $_.Value
    if ($_.Name -eq 'PATH') {
      $value = $value -replace ';',':'
    }
    # Use heredocs to wrap values. This fixes problems with environment variables containing single quotes.
    # An environment variable containing the string REFRESHENV_EOF could still cause problems, but is
    # far less likely than a single quote.
    Write-Output ("export " + $_.Name + "=$`(cat <<- 'REFRESHENV_EOF'`n" + $value + "`nREFRESHENV_EOF`)")
  }
} | Out-File -Encoding ascii $env:TEMP\refreshenv.sh

EOF

  source "$TEMP/refreshenv.sh"
}

install_ray() {
  # TODO(mehrdadn): This function should be unified with the one in ci/ci.sh.
  (
    pip install wheel

    pushd dashboard/client
      choco install nodejs  -y
      refreshenv
      # https://stackoverflow.com/questions/69692842/error-message-error0308010cdigital-envelope-routinesunsupported
      export NODE_OPTIONS=--openssl-legacy-provider
      npm install
      npm run build
    popd

    cd "${WORKSPACE_DIR}"/python
    "${WORKSPACE_DIR}"/ci/keep_alive pip install -v -e .
  )
}

uninstall_ray() {
  pip uninstall -y ray

  python -s -c "import runpy, sys; runpy.run_path(sys.argv.pop(), run_name='__api__')" clean "${ROOT_DIR}"/setup.py
}

build_wheel_windows() {
  local ray_uninstall_status=0
  uninstall_ray || ray_uninstall_status=1

  local local_dir="python/dist"
  for pyversion in "${PY_VERSIONS[@]}"; do
    if [ -z "${pyversion}" ]; then continue; fi
    bazel_preclean
    git clean -q -f -f -x -d -e "${local_dir}" -e python/ray/dashboard/client
    git checkout -q -f -- .

    # Start a subshell to prevent PATH and cd from affecting our shell environment
    (
      if ! is_python_version "${pyversion}"; then
        conda install -y python="${pyversion}"
      fi
      if ! is_python_version "${pyversion}"; then
        echo "Expected pip for Python ${pyversion} but found Python $(get_python_version) with $(pip --version); exiting..." 1>&2
        exit 1
      fi

      unset PYTHON2_BIN_PATH PYTHON3_BIN_PATH  # make sure these aren't set by some chance
      install_ray
      cd "${WORKSPACE_DIR}"/python
      # Set the commit SHA in __init__.py.
      if [ -n "$BUILDKITE_COMMIT" ]; then
        sed -i.bak "s/{{RAY_COMMIT_SHA}}/$BUILDKITE_COMMIT/g" ray/__init__.py && rm ray/__init__.py.bak
      else
        echo "BUILDKITE_COMMIT variable not set - required to populated ray.__commit__."
        exit 1
      fi
      # build ray wheel
      python setup.py --quiet bdist_wheel
      # build ray-cpp wheel
      RAY_INSTALL_CPP=1 python setup.py --quiet bdist_wheel
      uninstall_ray
    )
  done

  bazel_preclean
  if [ 0 -eq "${ray_uninstall_status}" ]; then  # If Ray was previously installed, restore it
    install_ray
  fi
}

build_wheel_windows "$@"