#!/bin/bash
#
# Copyright 2015 The Bazel Authors. All rights reserved.
#
# 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.
#
# swiftstdlibtoolwrapper runs swift-stdlib-tool and zips up the output.
# This script only runs on darwin and you must have Xcode installed.
#
# --output_zip_path - the path to place the output zip file.
# --bundle_path - the path inside of the archive to where libs will be copied.
# --toolchain - toolchain identifier to use with xcrun.

set -eu

MY_LOCATION=${MY_LOCATION:-"$0.runfiles/bazel_tools/tools/objc"}
REALPATH="${MY_LOCATION}/realpath"
WRAPPER="${MY_LOCATION}/xcrunwrapper.sh"

CMD_ARGS=("$@")

TOOL_ARGS=()
while [[ $# -gt 0 ]]; do
  ARG="$1"
  shift
  case "${ARG}" in
    --output_zip_path)
      ARG="$1"
      shift
      OUTZIP=$("${REALPATH}" "${ARG}")
      ;;
    --bundle_path)
      ARG="$1"
      shift
      PATH_INSIDE_ZIP="$ARG"
      ;;
    --toolchain)
      ARG="$1"
      shift
      TOOLCHAIN=${ARG}
      ;;
    # Remaining args are swift-stdlib-tool args
    *)
     TOOL_ARGS+=("$ARG")
     ;;
    esac
done

TEMPDIR=$(mktemp -d "${TMPDIR:-/tmp}/swiftstdlibtoolZippingOutput.XXXXXX")
trap "rm -rf \"$TEMPDIR\"" EXIT

if [ -z "${PATH_INSIDE_ZIP:-}" ] && [ -z "${OUTZIP:-}" ]; then
  # This is an older bazel binary, massage the arguments to accommodate.
  # TODO(b/30478247): Remove this when new bazel binary is available.
  PATH_INSIDE_ZIP="${CMD_ARGS[1]}"
  OUTZIP=$("${REALPATH}" "${CMD_ARGS[0]}")
  TOOL_ARGS=("${TOOL_ARGS[@]:2}")
fi

FULLPATH="$TEMPDIR/$PATH_INSIDE_ZIP"

XCRUN_ARGS=()

if [ -n "${TOOLCHAIN:-}" ]; then
  XCRUN_ARGS+=(--toolchain "$TOOLCHAIN")
fi

XCRUN_ARGS+=(swift-stdlib-tool --copy --verbose )
XCRUN_ARGS+=(--destination "$FULLPATH")
XCRUN_ARGS+=( "${TOOL_ARGS[@]}" )

$WRAPPER "${XCRUN_ARGS[@]}"

# Need to push/pop tempdir so it isn't the current working directory
# when we remove it via the EXIT trap.
pushd "$TEMPDIR" > /dev/null
# Reset all dates to Zip Epoch so that two identical zips created at different
# times appear the exact same for comparison purposes.
find . -exec touch -h -t 198001010000 {} \;

# Added include "*" to fix case where we may want an empty zip file because
# there is no data.
zip --compression-method store --symlinks --recurse-paths --quiet "$OUTZIP" . --include "*"
popd > /dev/null