# Copyright (c) 2016 The Chromium Embedded Framework Authors. All rights
# reserved. Use of this source code is governed by a BSD-style license that
# can be found in the LICENSE file.

from __future__ import absolute_import
from cef_parser import *
from make_ctocpp_impl import *


def make_views_function_stub_impl(clsname, func):
  name = func.get_name()

  # Build the C++ prototype.
  parts = func.get_cpp_parts(True)
  result = make_ctocpp_impl_proto(clsname, name, func, parts) + ' {'

  # Retrieve the function return value.
  retval = func.get_retval()
  retval_type = retval.get_retval_type()
  if retval_type == 'invalid':
    notify(name + ' could not be autogenerated')
    # Code could not be auto-generated.
    result += '\n  // COULD NOT IMPLEMENT DUE TO: (return value)'
    result += '\n  #pragma message("Warning: "__FILE__": ' + name + ' is not implemented")'
    retval_default = ''
  else:
    retval_default = retval.get_retval_default(False)

  result += '\n  NOTIMPLEMENTED();'
  if retval_default != '':
    result += '\n  return ' + retval_default + ';'

  result += '\n}\n\n'

  return result


def make_views_class_stub_impl(header, cls):
  impl = ''

  clsname = cls.get_name()
  funcs = cls.get_static_funcs()
  for func in funcs:
    impl += make_views_function_stub_impl(clsname, func)

  return impl


def make_views_stub_impl(header):
  includes = ''
  impl = ''

  allclasses = header.get_classes()
  for cls in allclasses:
    dir = cls.get_file_directory()
    # Only process files in the views/ directory.
    if dir != None and dir.find('views') == 0:
      cls_impl = make_views_class_stub_impl(header, cls)
      if cls_impl != '':
        impl += cls_impl
        includes += '#include "include/' + cls.get_file_name() + '"\n'

  includes += '\n#include "base/logging.h"\n'

  # Build the final output.
  result = get_copyright() + includes
  result += '\n\n// STATIC STUB METHODS - Do not edit by hand.\n\n'
  result += impl
  return result


def write_views_stub_impl(header, file):
  newcontents = make_views_stub_impl(header)
  return (file, newcontents)


# Test the module.
if __name__ == "__main__":
  import sys

  # Verify that the correct number of command-line arguments are provided.
  if len(sys.argv) < 2:
    sys.stderr.write('Usage: ' + sys.argv[0] + ' <cpp_header_dir>\n')
    sys.exit()

  cpp_header_dir = sys.argv[1]

  # Create the header object. Should match the logic in translator.py.
  header = obj_header()
  header.set_root_directory(cpp_header_dir)
  excluded_files = ['cef_api_hash.h', 'cef_application_mac.h', 'cef_version.h']
  header.add_directory(cpp_header_dir, excluded_files)
  header.add_directory(os.path.join(cpp_header_dir, 'views'))

  # Dump the result to stdout.
  sys.stdout.write(make_views_stub_impl(header))