# Copyright 2021 The Pigweed 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
#
#     https://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/pigweed.gni")

import("$dir_pw_async2/backend.gni")
import("$dir_pw_bloat/bloat.gni")
import("$dir_pw_build/python.gni")
import("$dir_pw_build/target_types.gni")
import("$dir_pw_docgen/docs.gni")
import("$dir_pw_fuzzer/fuzz_test.gni")
import("$dir_pw_unit_test/test.gni")

config("default_config") {
  include_dirs = [ "public" ]
}

group("pw_hdlc") {
  public_deps = [
    ":decoder",
    ":encoded_size",
    ":encoder",
  ]
}

pw_source_set("common") {
  public_configs = [ ":default_config" ]
  public = [ "public/pw_hdlc/internal/protocol.h" ]
  public_deps = [ dir_pw_varint ]
  visibility = [ ":*" ]
}

pw_source_set("encoded_size") {
  public_configs = [ ":default_config" ]
  public = [ "public/pw_hdlc/encoded_size.h" ]
  public_deps = [
    ":common",
    "$dir_pw_bytes",
    "$dir_pw_span",
    "$dir_pw_varint",
  ]
}

pw_source_set("decoder") {
  public_configs = [ ":default_config" ]
  public = [ "public/pw_hdlc/decoder.h" ]
  sources = [ "decoder.cc" ]
  public_deps = [
    ":common",
    dir_pw_bytes,
    dir_pw_checksum,
    dir_pw_result,
    dir_pw_span,
    dir_pw_status,
  ]
  deps = [ dir_pw_log ]
  friend = [ ":*" ]
}

pw_source_set("encoder") {
  public_configs = [ ":default_config" ]
  public = [ "public/pw_hdlc/encoder.h" ]
  sources = [ "encoder.cc" ]
  public_deps = [
    ":common",
    dir_pw_bytes,
    dir_pw_checksum,
    dir_pw_span,
    dir_pw_status,
    dir_pw_stream,
  ]
  deps = [ ":encoded_size" ]
  friend = [ ":*" ]
}

pw_source_set("rpc_channel_output") {
  public_configs = [ ":default_config" ]
  public = [ "public/pw_hdlc/rpc_channel.h" ]
  public_deps = [
    ":pw_hdlc",
    "$dir_pw_rpc:server",
    dir_pw_span,
  ]
}

pw_source_set("default_addresses") {
  public_configs = [ ":default_config" ]
  public = [ "public/pw_hdlc/default_addresses.h" ]
}

pw_source_set("packet_parser") {
  public_configs = [ ":default_config" ]
  public = [ "public/pw_hdlc/wire_packet_parser.h" ]
  sources = [ "wire_packet_parser.cc" ]
  public_deps = [
    ":pw_hdlc",
    "$dir_pw_router:packet_parser",
  ]
  deps = [
    dir_pw_bytes,
    dir_pw_checksum,
  ]
}

# A backend for pw_rpc's `system_server` that sends and receives HDLC-framed RPC
# packets over pw_sys_io.
#
# Warning: This system server is polling and blocking, so it's not
# production-ready. This exists for simplifying initial bringup/testing, and
# should not be used in any performance-sensitive application.
pw_source_set("hdlc_sys_io_system_server") {
  deps = [
    "$dir_pw_hdlc:decoder",
    "$dir_pw_hdlc:default_addresses",
    "$dir_pw_hdlc:rpc_channel_output",
    "$dir_pw_rpc/system_server:facade",
    "$dir_pw_stream:sys_io_stream",
    dir_pw_log,
  ]
  sources = [ "hdlc_sys_io_system_server.cc" ]
}

pw_source_set("router") {
  public_configs = [ ":default_config" ]
  public_deps = [
    ":decoder",
    "$dir_pw_async2:dispatcher",
    "$dir_pw_async2:poll",
    "$dir_pw_containers:vector",
    "$dir_pw_multibuf:allocator",
    dir_pw_channel,
    dir_pw_multibuf,
    dir_pw_status,
  ]
  deps = [
    ":encoder",
    "$dir_pw_multibuf:stream",
    dir_pw_log,
    dir_pw_result,
    dir_pw_stream,
  ]
  public = [ "public/pw_hdlc/router.h" ]
  sources = [ "router.cc" ]
}

pw_test("router_test") {
  enable_if = pw_async2_DISPATCHER_BACKEND != ""
  deps = [
    ":router",
    "$dir_pw_allocator:testing",
    "$dir_pw_async2:pend_func_task",
    "$dir_pw_channel:forwarding_channel",
    "$dir_pw_channel:loopback_channel",
    "$dir_pw_multibuf:simple_allocator",
  ]
  sources = [ "router_test.cc" ]
}

pw_test_group("tests") {
  tests = [
    ":encoded_size_test",
    ":encoder_test",
    ":decoder_test",
    ":router_test",
    ":rpc_channel_test",
    ":wire_packet_parser_test",
  ]
  group_deps = [
    "$dir_pw_preprocessor:tests",
    "$dir_pw_status:tests",
    "$dir_pw_stream:tests",
  ]
}

pw_test("encoded_size_test") {
  deps = [
    ":pw_hdlc",
    "$dir_pw_bytes",
    "$dir_pw_result",
    "$dir_pw_stream",
    "$dir_pw_varint",
  ]
  sources = [ "encoded_size_test.cc" ]

  # TODO: b/259746255 - Remove this when everything compiles with -Wconversion.
  configs = [ "$dir_pw_build:conversion_warnings" ]
}

pw_test("encoder_test") {
  deps = [ ":pw_hdlc" ]
  sources = [ "encoder_test.cc" ]

  # TODO: b/259746255 - Remove this when everything compiles with -Wconversion.
  configs = [ "$dir_pw_build:conversion_warnings" ]
}

pw_python_action("generate_decoder_test") {
  outputs = [ "$target_gen_dir/generated_decoder_test.cc" ]
  script = "py/decode_test.py"
  args = [ "--generate-cc-test" ] + rebase_path(outputs, root_build_dir)
  python_deps = [
    "$dir_pw_build/py",
    "py",
  ]
}

pw_fuzz_test("decoder_test") {
  deps = [ ":pw_hdlc" ]
  source_gen_deps = [ ":generate_decoder_test" ]
  sources = [ "decoder_test.cc" ]

  # TODO: b/259746255 - Remove this when everything compiles with -Wconversion.
  configs = [ "$dir_pw_build:conversion_warnings" ]
}

pw_test("rpc_channel_test") {
  deps = [
    ":pw_hdlc",
    ":rpc_channel_output",
  ]
  sources = [ "rpc_channel_test.cc" ]

  # TODO: b/259746255 - Remove this when everything compiles with -Wconversion.
  configs = [ "$dir_pw_build:conversion_warnings" ]
}

pw_test("wire_packet_parser_test") {
  deps = [
    ":packet_parser",
    dir_pw_bytes,
  ]
  sources = [ "wire_packet_parser_test.cc" ]

  # TODO: b/259746255 - Remove this when everything compiles with -Wconversion.
  configs = [ "$dir_pw_build:conversion_warnings" ]
}

pw_size_diff("size_report") {
  title = "HDLC sizes"

  binaries = [
    {
      target = "size_report:full"
      base = "size_report:base"
      label = "HDLC encode and decode"
    },
    {
      target = "size_report:full_crc"
      base = "size_report:base_crc"
      label = "HDLC encode and decode, ignoring CRC and varint"
    },
  ]
}

pw_doc_group("docs") {
  sources = [
    "api.rst",
    "design.rst",
    "docs.rst",
    "guide.rst",
    "router.rst",
    "rpc_example/docs.rst",
    "size.rst",
  ]
  inputs = [
    "py/pw_hdlc/decode.py",
    "py/pw_hdlc/encode.py",
  ]
  report_deps = [ ":size_report" ]
}