#!/usr/bin/env python3
# Copyright 2013 The Flutter 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 string
import sys


def read_libraries(libraries_path):
  with open(libraries_path) as f:
    lines = f.readlines()
    return [l.rstrip("\n") for l in lines]


def write_libraries(libraries_path, libraries):
  directory = os.path.dirname(libraries_path)
  if not os.path.exists(directory):
    os.makedirs(directory)
  with open(libraries_path, "w+") as f:
    for library in libraries:
      f.write(library)
      f.write("\n")


def main():
  parser = argparse.ArgumentParser(
      description="Generate response file for FIDL frontend"
  )
  parser.add_argument(
      "--out-response-file",
      help="The path for the response file to generate",
      required=True
  )
  parser.add_argument(
      "--out-libraries",
      help="The path for the libraries file to generate",
      required=True
  )
  parser.add_argument(
      "--json", help="The path for the JSON file to generate, if any"
  )
  parser.add_argument(
      "--tables", help="The path for the tables file to generate, if any"
  )
  parser.add_argument(
      "--deprecated-fuchsia-only-c-client",
      help="The path for the C simple client file to generate, if any"
  )
  parser.add_argument(
      "--deprecated-fuchsia-only-c-header",
      help="The path for the C header file to generate, if any"
  )
  parser.add_argument(
      "--deprecated-fuchsia-only-c-server",
      help="The path for the C simple server file to generate, if any"
  )
  parser.add_argument(
      "--name", help="The name for the generated FIDL library, if any"
  )
  parser.add_argument(
      "--depfile", help="The name for the generated depfile, if any"
  )
  parser.add_argument("--sources", help="List of FIDL source files", nargs="*")
  parser.add_argument(
      "--dep-libraries", help="List of dependent libraries", nargs="*"
  )
  parser.add_argument(
      "--experimental-flag", help="List of experimental flags", action="append"
  )
  args = parser.parse_args()

  target_libraries = []

  for dep_libraries_path in args.dep_libraries or []:
    dep_libraries = read_libraries(dep_libraries_path)
    for library in dep_libraries:
      if library in target_libraries:
        continue
      target_libraries.append(library)

  target_libraries.append(" ".join(sorted(args.sources)))
  write_libraries(args.out_libraries, target_libraries)

  response_file = []

  if args.json:
    response_file.append("--json %s" % args.json)

  if args.tables:
    response_file.append("--tables %s" % args.tables)

  if args.deprecated_fuchsia_only_c_client:
    response_file.append(
        "--deprecated-fuchsia-only-c-client %s" %
        args.deprecated_fuchsia_only_c_client
    )

  if args.deprecated_fuchsia_only_c_header:
    response_file.append(
        "--deprecated-fuchsia-only-c-header %s" %
        args.deprecated_fuchsia_only_c_header
    )

  if args.deprecated_fuchsia_only_c_server:
    response_file.append(
        "--deprecated-fuchsia-only-c-server %s" %
        args.deprecated_fuchsia_only_c_server
    )

  if args.name:
    response_file.append("--name %s" % args.name)

  if args.depfile:
    response_file.append("--depfile %s" % args.depfile)

  if args.experimental_flag:
    for experimental_flag in args.experimental_flag:
      response_file.append("--experimental %s" % experimental_flag)

  response_file.extend(["--files %s" % library for library in target_libraries])

  with open(args.out_response_file, "w+") as f:
    f.write(" ".join(response_file))
    f.write("\n")


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