# Copyright 2016 The Cobalt 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.
"""Starboard Linux X64 X11 Clang 3.6 platform configuration."""

import logging
import os
import subprocess

from starboard.linux.shared import gyp_configuration as shared_configuration
from starboard.tools.toolchain import ar
from starboard.tools.toolchain import bash
from starboard.tools.toolchain import clang
from starboard.tools.toolchain import clangxx
from starboard.tools.toolchain import cp
from starboard.tools.toolchain import touch


class LinuxX64X11Clang36Configuration(shared_configuration.LinuxConfiguration):
  """Starboard Linux X64 X11 Clang 3.6 platform configuration."""

  def __init__(self,
               platform='linux-x64x11-clang-3-6',
               asan_enabled_by_default=False,
               sabi_json_path='starboard/sabi/default/sabi.json'):
    super(LinuxX64X11Clang36Configuration,
          self).__init__(platform, asan_enabled_by_default, sabi_json_path)

    self.toolchain_dir = '/usr/lib/llvm-3.6'

  def SetupPlatformTools(self, build_number):
    ret = subprocess.call('/usr/bin/clang-3.6 --version', shell=True)
    if ret != 0:
      raise Exception('clang-3.6 is not installed.')

  def GetEnvironmentVariables(self):
    toolchain_bin_dir = os.path.join(self.toolchain_dir, 'bin')

    env_variables = super(LinuxX64X11Clang36Configuration,
                          self).GetEnvironmentVariables()
    env_variables.update({
        'CC':
            self.build_accelerator + ' ' +
            os.path.join(toolchain_bin_dir, 'clang'),
        'CXX':
            self.build_accelerator + ' ' +
            os.path.join(toolchain_bin_dir, 'clang++'),
    })
    return env_variables

  def GetVariables(self, config_name):
    variables = super(LinuxX64X11Clang36Configuration,
                      self).GetVariables(config_name)
    return variables

  def GetTargetToolchain(self, **kwargs):
    environment_variables = self.GetEnvironmentVariables()
    cc_path = environment_variables['CC']
    cxx_path = environment_variables['CXX']

    return [
        clang.CCompiler(path=cc_path),
        clang.CxxCompiler(path=cxx_path),
        clang.AssemblerWithCPreprocessor(path=cc_path),
        ar.StaticThinLinker(),
        ar.StaticLinker(),
        clangxx.ExecutableLinker(path=cxx_path, write_group=True),
        clangxx.SharedLibraryLinker(path=cxx_path),
        cp.Copy(),
        touch.Stamp(),
        bash.Shell(),
    ]

  def GetHostToolchain(self, **kwargs):
    environment_variables = self.GetEnvironmentVariables()
    cc_path = environment_variables['CC_host']
    cxx_path = environment_variables['CXX_host']

    return [
        clang.CCompiler(path=cc_path),
        clang.CxxCompiler(path=cxx_path),
        clang.AssemblerWithCPreprocessor(path=cc_path),
        ar.StaticThinLinker(),
        ar.StaticLinker(),
        clangxx.ExecutableLinker(path=cxx_path, write_group=True),
        clangxx.SharedLibraryLinker(path=cxx_path),
        cp.Copy(),
        touch.Stamp(),
        bash.Shell(),
    ]


def CreatePlatformConfig():
  try:
    return LinuxX64X11Clang36Configuration(
        sabi_json_path='starboard/sabi/x64/sysv/sabi-v{sb_api_version}.json')
  except RuntimeError as e:
    logging.critical(e)
    return None