#!/bin/bash
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

set -ex

# change to root directory
cd $(dirname $0)/../..

DIRS=src/python
EXCLUSIONS='src/python/grpcio/grpc_*.py src/python/grpcio_health_checking/grpc_*.py src/python/grpcio_reflection/grpc_*.py src/python/grpcio_tests/grpc_*.py'

VIRTUALENV=python_format_venv

virtualenv $VIRTUALENV
PYTHON=`realpath $VIRTUALENV/bin/python`
$PYTHON -m pip install futures
$PYTHON -m pip install yapf==0.16.0

exclusion_args=""
for exclusion in $EXCLUSIONS; do
  exclusion_args="$exclusion_args --exclude $exclusion"
done

script_result=0
for dir in $DIRS; do
  tempdir=`mktemp -d`
  cp -RT $dir $tempdir
  $PYTHON -m yapf -i -r -p $exclusion_args $dir
  if ! diff -rq $dir $tempdir; then
    script_result=1
  fi
  rm -rf $tempdir
done
exit $script_result