# Copyright (c) 2021 Project CHIP Authors
#
# 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.
import("//build_overrides/build.gni")
import("//build_overrides/chip.gni")
import("//build_overrides/pigweed.gni")

import("$dir_pw_build/python.gni")

import("${chip_root}/build/chip/tools.gni")
import("${chip_root}/src/platform/device.gni")
import("${dir_pw_unit_test}/test.gni")

if (current_os == "mac") {
  import("${build_root}/config/mac/mac_sdk.gni")
}

config("controller_wno_deprecate") {
  cflags = [
    "-Wno-deprecated-declarations",
    "-Wno-shadow",
    "-Wno-unused-result",
    "-Wsign-compare",
    "-Wunreachable-code",
    "-Wno-macro-redefined",
  ]
}

shared_library("CHIPController") {
  configs -= [ "//build/config/compiler:exceptions_default" ]

  output_name = "PyChip"
  output_dir = "${target_out_dir}/pychip"

  # TODO: Update to use GN tools to get actual paths
  include_dirs = [ "${chip_root}/third_party/pybind11/repo/include" ]
  if (current_os == "mac") {
    include_dirs +=
        [ "${chip_root}/.environment/cipd/packages/python/include/python3.9" ]
  } else if (current_os == "linux") {
    include_dirs += [ "/usr/include/python3.9" ]
  } else {
    assert(false, "OS not supported.")
  }

  sources = [
    "ControllerBindings/PyChip_ChipError.cpp",
    "ControllerBindings/PyChip_ErrorStr.cpp",
    "ControllerBindings/PyChip_Main.cpp",
  ]

  public_deps = [
    "${chip_root}/src/app",
    "${chip_root}/src/controller/data_model",
    "${chip_root}/src/lib",
    "${chip_root}/src/lib/core",
    "${chip_root}/src/lib/dnssd",
    "${chip_root}/src/lib/support",
    "${chip_root}/src/platform",
    "${chip_root}/src/setup_payload",
    "${chip_root}/src/transport",
  ]
  configs += [ ":controller_wno_deprecate" ]
  if (current_os == "mac") {
    ldflags = [
      "-undefined",
      "dynamic_lookup",
    ]
  }
  if (current_os == "linux") {
    libs = [ "python3.9" ]
  }
}

pw_python_action("pycontroller") {
  script = "build-chip-wheel.py"

  _py_manifest_files = [
    {
      src_dir = "."
      sources = [ "pychip/__init__.py" ]
    },
    {
      src_dir = target_out_dir
      sources = [ "${target_out_dir}/pychip/PyChip.so" ]
    },
    {
      src_dir = "//"
      sources = [ "//LICENSE" ]
    },
  ]

  _py_manifest_file = "${target_gen_dir}/${target_name}.py_manifest.json"

  inputs = []
  _py_manifest_files_rebased = []
  foreach(_manifest_entry, _py_manifest_files) {
    inputs += _manifest_entry.sources
    _py_manifest_files_rebased += [
      {
        src_dir = rebase_path(_manifest_entry.src_dir,
                              get_path_info(_py_manifest_file, "dir"))
        sources = rebase_path(_manifest_entry.sources, _manifest_entry.src_dir)
      },
    ]
  }

  _py_manifest = {
    files = _py_manifest_files_rebased
  }

  write_file(_py_manifest_file, _py_manifest, "json")

  _dist_dir = "${root_out_dir}/pybindings/pycontroller"

  if (current_cpu == "x64") {
    cpu_tag = "x86_64"
  } else if (current_cpu == "arm64") {
    cpu_tag = "aarch64"
  } else {
    cpu_tag = current_cpu
  }

  if (current_os == "mac") {
    platform_tag = string_replace(
            string_replace(mac_deployment_target, "macos", "macosx."),
            ".",
            "_")
  } else {
    platform_tag = current_os
  }

  platform_tag = platform_tag + "_" + cpu_tag

  tags = "cp37-" + platform_tag

  args = [
    "--package_name",
    "pychip",
    "--build_number",
    "0.0",
    "--build_dir",
    rebase_path("${target_gen_dir}/${target_name}.py_build", root_build_dir),
    "--dist_dir",
    rebase_path(_dist_dir, root_build_dir),
    "--manifest",
    rebase_path(_py_manifest_file, root_build_dir),
    "--plat-name",
    platform_tag,
  ]

  public_deps = [ ":CHIPController" ]

  output_name = "pychip-0.0.dist-info-0.0-${tags}.whl"
  outputs = [ "${_dist_dir}/$output_name" ]
}