#!/usr/bin/env python
# Copyright 2018 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import argparse
import os
import stat
import string
import sys


def main():
  parser = argparse.ArgumentParser(
      description='Generate a script that invokes the Dart tester')
  parser.add_argument('--out',
                      help='Path to the invocation file to generate',
                      required=True)
  parser.add_argument('--sources',
                      help='Path to test files',
                      required=True,
                      nargs='+')
  parser.add_argument('--dart-binary',
                      help='Path to the dart binary.',
                      required=True)
  parser.add_argument('--dot-packages',
                      help='Path to the .packages file',
                      required=True)
  args = parser.parse_args()

  test_file = args.out
  test_path = os.path.dirname(test_file)
  if not os.path.exists(test_path):
    os.makedirs(test_path)

  sources_string = ' '.join(args.sources)
  script_template = string.Template('''#!/bin/sh
# This artifact was generated by //build/dart/gen_remote_test_invocation.py
# Expects arg 1 to be the fuchsia remote address, and arg 2 to be the (optional)
# SSH config path.

set -e

export FUCHSIA_DEVICE_URL="$$1"
if [[ ! -z "$$2" ]]; then
  export FUCHSIA_SSH_CONFIG="$$2"
fi

for TEST in $sources_string; do
  $dart_binary --packages="$dot_packages" "$$TEST"
done
''')
  with open(test_file, 'w') as file:
      file.write(script_template.substitute(args.__dict__,
                                            sources_string=sources_string))
  permissions = (stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR |
                 stat.S_IRGRP | stat.S_IWGRP | stat.S_IXGRP |
                 stat.S_IROTH)
  os.chmod(test_file, permissions)


if __name__ == '__main__':
  sys.exit(main())