#!/usr/bin/env bash
# Copyright 2015 The TensorFlow 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.
# ==============================================================================

set -e -o errexit

if [ -d "../org_tensorflow" ]; then
script_path="../org_tensorflow"
else
 # Prefix expected paths with ./ locally and external/reponame/ for remote repos.
 # TODO(kchodorow): remove once runfiles paths are fixed, see
 # https://github.com/bazelbuild/bazel/issues/848.
 script_path=$(dirname $(dirname $(dirname "0ドル")))
 script_path=${script_path:-.}
fi

EXPECTED_PATHS="$script_path/util/python/python_include"\
" $script_path/util/python/python_lib"

function main {
 argument="1ドル"
 shift
case $argument in
 --check)
 check_python
 exit 0
 ;;
 --setup)
 setup_python "1ドル"
 exit 0
 ;;
 esac
}

function setup_python {
 PYTHON_BIN_PATH="1ドル";

 if [ -z "$PYTHON_BIN_PATH" ]; then
echo "PYTHON_BIN_PATH was not provided. Did you run configure?"
 exit 1
 fi
 if [ ! -x "$PYTHON_BIN_PATH" ] || [ -d "$PYTHON_BIN_PATH" ]; then
echo "PYTHON_BIN_PATH is not executable. Is it the python binary?"
 exit 1
 fi

local python_major_version=$("${PYTHON_BIN_PATH}" -c 'from __future__ import print_function; import sys; print(sys.version_info[0]);')
 if [ "$python_major_version" == "" ]; then
echo -e "\n\nERROR: Problem getting python version. Is $PYTHON_BIN_PATH the correct python binary?"
 exit 1
 fi

local python_include=$("${PYTHON_BIN_PATH}" -c 'from __future__ import print_function; from distutils import sysconfig; print(sysconfig.get_python_inc());')
 if [ "$python_include" == "" ]; then
echo -e "\n\nERROR: Problem getting python include path. Is distutils installed?"
 exit 1
 fi
local python_lib=$("${PYTHON_BIN_PATH}" -c 'from __future__ import print_function; from distutils import sysconfig; print(sysconfig.get_python_lib());')
 if [ "$python_lib" == "" ]; then
echo -e "\n\nERROR: Problem getting python lib path. Is distutils installed?"
 exit 1
 fi


 for x in $EXPECTED_PATHS; do
 if [ -e "$x" ]; then
rm "$x"
 fi
 done

ln -sf "${python_include}" util/python/python_include
 ln -sf "${python_lib}" util/python/python_lib

 # Write tools/bazel.rc
 echo "# Autogenerated by configure: DO NOT EDIT" > tools/bazel.rc
 sed -e "s/\$PYTHON_MAJOR_VERSION/$python_major_version/g" \
 -e "s[\$PYTHON_BINARY[$PYTHON_BIN_PATH[g" \
 tools/bazel.rc.template >> tools/bazel.rc
 # Write tools/python_bin_path.sh
 echo "export PYTHON_BIN_PATH=$PYTHON_BIN_PATH" > tools/python_bin_path.sh
}

function check_python {
 for x in $EXPECTED_PATHS; do
 if [ ! -e "$x" ]; then
echo -e "\n\nERROR: Cannot find '${x}'. Did you run configure?\n\n" 1>&2
 exit 1
 fi
 if [ ! -L "${x}" ]; then
echo -e "\n\nERROR: '${x}' is not a symbolic link. Internal error.\n\n" 1>&2
 exit 1
 fi
true_path=$(readlink "${x}")
 if [ ! -d "${true_path}" ]; then
echo -e "\n\nERROR: '${x}' does not refer to an existing directory: ${true_path}. Do you need to rerun configure?\n\n" 1>&2
 exit 1
 fi
 done
}

main "$@"