#!/usr/bin/env python

# Copyright 2019 The Clspv 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.

from __future__ import print_function

import argparse
import glob
import os.path
import subprocess
import sys

SWIFTSHADER_SUPPRESSIONS = [
    'images/write_image2d_r32f.amber',
    'images/write_image2d_rg32f.amber',
    'images/write_image2d_rgba32f.amber',
    'images/write_image2d_r32ui.amber',
    'images/write_image2d_rg32ui.amber',
    'images/write_image2d_rgba32ui.amber',
    'images/write_image2d_r32i.amber',
    'images/write_image2d_rg32i.amber',
    'images/write_image2d_rgba32i.amber',
    'integer/add_sat_short.amber',
    'integer/ctz_long.amber',
    'integer/ctz_short.amber',
    'integer/clz_long.amber',
    'integer/clz_short.amber',
    'integer/sub_sat_short.amber',
    'integer/sub_sat_ushort.amber']


def main():
  parser = argparse.ArgumentParser('Run Amber tests (without validation layers)')
  parser.add_argument('--dir', dest='test_dir', default='.',
                      help='Specify the base directory of tests')
  parser.add_argument('--amber', dest='amber',
                      help='Specify the path to the amber executable')
  parser.add_argument('--swiftshader', dest='swiftshader', action='store_true',
                      help='Only run tests compatible with Swiftshader')
  parser.add_argument('--vk-icd', dest='vk_icd',
                      help='Specify the path to the Vulkan ICD json')
  parser.add_argument('--one-dir', dest='one_dir', action='store_true',
                      help='Avoid large globs and assume tests are directly in --dir')
  parser.add_argument( '--validate', dest='validate', action='store_true',
                      help='Enable Vulkan validation layers')

  args = parser.parse_args()

  if args.vk_icd:
    os.environ['VK_ICD_FILENAMES'] = args.vk_icd

  tests = []
  if args.one_dir:
    tests = glob.glob(os.path.join(args.test_dir, '*.amber'))
  else:
    tests = glob.glob(os.path.join(args.test_dir, '**/*.amber'))
  if args.swiftshader:
    for suppress in SWIFTSHADER_SUPPRESSIONS:
      p = suppress
      if args.one_dir:
        p = p.split('/')[1]
      adjusted = os.path.join(args.test_dir, p)
      if adjusted in tests:
        tests.remove(adjusted)
  cmd = [args.amber, '-V']
  if not args.validate:
    cmd = cmd + ['-d']
  cmd = cmd + tests
  p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
  (stdout, _) = p.communicate()
  if p.returncode != 0:
    raise RuntimeError('Failed tests \'{}\''.format(stdout.decode('utf-8')))
  print(stdout.decode('utf-8'))

  sys.exit(0)

if __name__ == '__main__':
  main()