#!/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.
#
# ibtoolwrapper runs ibtool and zips up the output.
# This script only runs on darwin and you must have Xcode installed.
#
# $1 OUTZIP - the path to place the output zip file.
# $2 ARCHIVEROOT - the path in the zip to place the output, or an empty
#                  string for the root of the zip. e.g. 'Payload/foo.app'. If
#                  this tool outputs a single file, ARCHIVEROOT is the name of
#                  the only file in the zip file.

set -eu

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

OUTZIP=$("${REALPATH}" "$1")
ARCHIVEROOT="$2"
shift 2
TEMPDIR=$(mktemp -d "${TMPDIR:-/tmp}/ibtoolZippingOutput.XXXXXX")
trap "rm -rf \"$TEMPDIR\"" EXIT

# Create the directory used to expand compiled storyboards for linking if that
# options is present on the command line.
for i in "$@"; do
  if [[ "$i" == "--link" ]]; then
    LINKDIR=$(mktemp -d "${TMPDIR:-/tmp}/ibtoolLinkingRoot.XXXXXX")
    trap "rm -rf \"$LINKDIR\"" EXIT
  fi
done

FULLPATH="$TEMPDIR/$ARCHIVEROOT"
PARENTDIR=$(dirname "$FULLPATH")
mkdir -p "$PARENTDIR"
FULLPATH=$("${REALPATH}" "$FULLPATH")

# IBTool needs to have absolute paths sent to it, so we call realpaths on
# on all arguments seeing if we can expand them.
# Radar 21045660 ibtool has difficulty dealing with relative paths.
TOOLARGS=()
# By default, have ibtool compile storyboards (to stay compatible with the
# native rules). If the command line includes "--link", we use it instead.
ACTION=--compile
for i in "$@"; do
  if [ -e "$i" ]; then
    if [[ "$i" == *.zip ]]; then
      unzip -qq "$i" -d "$LINKDIR"
    else
      ARG=$("${REALPATH}" "$i")
      TOOLARGS+=("$ARG")
    fi
  else
    if [[ "$i" == --link ]]; then
      ACTION="$i"
    else
      TOOLARGS+=("$i")
    fi
  fi
done

# Collect all the .storyboardc directories that were extracted earlier for
# the linking action.
if [[ "$ACTION" == --link ]]; then
  TOOLARGS+=($(find "$LINKDIR" -name "*.storyboardc" -exec "$REALPATH" {} \;))
fi

# If we are running into problems figuring out ibtool issues, there are a couple
# of env variables that may help. Both of the following must be set to work.
#   IBToolDebugLogFile=<OUTPUT FILE PATH>
#   IBToolDebugLogLevel=4
# you may also see if
#   IBToolNeverDeque=1
# helps.
"${WRAPPER}" ibtool --errors --warnings --notices \
    --auto-activate-custom-fonts --output-format human-readable-text \
    "$ACTION" "$FULLPATH" "${TOOLARGS[@]}"

# 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