# 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("$dir_pw_build/input_group.gni")
import("$dir_pw_build/module_config.gni")
import("$dir_pw_build/target_types.gni")
import("$dir_pw_docgen/docs.gni")
import("$dir_pw_fuzzer/fuzzer.gni")
import("$dir_pw_perf_test/perf_test.gni")
import("$dir_pw_protobuf_compiler/proto.gni")
import("$dir_pw_unit_test/facade_test.gni")
import("$dir_pw_unit_test/test.gni")

declare_args() {
  # The build target that overrides the default configuration options for this
  # module. This should point to a source set that provides defines through a
  # public config (which may -include a file or add defines directly).
  pw_protobuf_CONFIG = pw_build_DEFAULT_MODULE_CONFIG
}

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

pw_source_set("config") {
  public = [ "public/pw_protobuf/config.h" ]
  public_configs = [ ":public_include_path" ]
  public_deps = [ pw_protobuf_CONFIG ]
  visibility = [ ":*" ]
}

pw_source_set("pw_protobuf") {
  public_configs = [ ":public_include_path" ]
  public_deps = [
    ":config",
    "$dir_pw_bytes:bit",
    "$dir_pw_containers:vector",
    "$dir_pw_stream:interval_reader",
    "$dir_pw_varint:stream",
    dir_pw_assert,
    dir_pw_bytes,
    dir_pw_function,
    dir_pw_log,
    dir_pw_preprocessor,
    dir_pw_result,
    dir_pw_span,
    dir_pw_status,
    dir_pw_stream,
    dir_pw_varint,
  ]
  public = [
    "public/pw_protobuf/decoder.h",
    "public/pw_protobuf/encoder.h",
    "public/pw_protobuf/find.h",
    "public/pw_protobuf/internal/codegen.h",
    "public/pw_protobuf/internal/proto_integer_base.h",
    "public/pw_protobuf/map_utils.h",
    "public/pw_protobuf/message.h",
    "public/pw_protobuf/serialized_size.h",
    "public/pw_protobuf/stream_decoder.h",
    "public/pw_protobuf/wire_format.h",
  ]
  sources = [
    "decoder.cc",
    "encoder.cc",
    "find.cc",
    "map_utils.cc",
    "message.cc",
    "stream_decoder.cc",
  ]
  deps = [ "$dir_pw_string:string" ]
}

pw_source_set("bytes_utils") {
  public_configs = [ ":public_include_path" ]
  public = [ "public/pw_protobuf/bytes_utils.h" ]
  public_deps = [
    ":pw_protobuf",
    dir_pw_bytes,
    dir_pw_result,
    dir_pw_status,
  ]
}

pw_doc_group("docs") {
  sources = [
    "docs.rst",
    "size_report.rst",
  ]
  inputs = [
    "pw_protobuf_test_protos/size_report.options",
    "pw_protobuf_test_protos/size_report.proto",
  ]
  report_deps = [
    "size_report:decoder_incremental",
    "size_report:decoder_partial",
    "size_report:oneof_codegen_size_comparison",
    "size_report:protobuf_overview",
    "size_report:simple_codegen_size_comparison",
  ]
}

pw_test_group("tests") {
  tests = [
    ":codegen_decoder_test",
    ":codegen_encoder_test",
    ":codegen_message_test",
    ":decoder_test",
    ":encoder_test",
    ":encoder_fuzzer_test",
    ":decoder_fuzzer_test",
    ":find_test",
    ":map_utils_test",
    ":message_test",
    ":serialized_size_test",
    ":stream_decoder_test",
    ":varint_size_test",
  ]
}

group("fuzzers") {
  deps = [
    ":decoder_fuzzer",
    ":encoder_fuzzer",
  ]
}

pw_test("decoder_test") {
  deps = [ ":pw_protobuf" ]
  sources = [ "decoder_test.cc" ]
}

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

pw_test("find_test") {
  deps = [ ":pw_protobuf" ]
  sources = [ "find_test.cc" ]
}

pw_test("codegen_decoder_test") {
  deps = [ ":codegen_test_protos.pwpb" ]
  sources = [ "codegen_decoder_test.cc" ]
}

pw_test("codegen_encoder_test") {
  deps = [ ":codegen_test_protos.pwpb" ]
  sources = [ "codegen_encoder_test.cc" ]
}

pw_test("codegen_message_test") {
  deps = [
    ":codegen_test_protos.pwpb",
    dir_pw_string,
  ]
  sources = [ "codegen_message_test.cc" ]
}

pw_test("serialized_size_test") {
  deps = [ ":pw_protobuf" ]
  sources = [ "serialized_size_test.cc" ]
}

pw_test("stream_decoder_test") {
  deps = [ ":pw_protobuf" ]
  sources = [ "stream_decoder_test.cc" ]
}

pw_test("map_utils_test") {
  deps = [ ":pw_protobuf" ]
  sources = [ "map_utils_test.cc" ]
}

pw_test("message_test") {
  deps = [ ":pw_protobuf" ]
  sources = [ "message_test.cc" ]
}

group("perf_tests") {
  deps = [ ":encoder_perf_test" ]
}

pw_perf_test("encoder_perf_test") {
  enable_if = pw_perf_test_TIMER_INTERFACE_BACKEND != ""
  deps = [ ":pw_protobuf" ]
  sources = [ "encoder_perf_test.cc" ]
}

config("one_byte_varint") {
  defines = [ "PW_PROTOBUF_CFG_MAX_VARINT_SIZE=1" ]
  visibility = [ ":*" ]
}

pw_source_set("varint_size_test_config") {
  public_configs = [ ":one_byte_varint" ]
  visibility = [ ":*" ]
}

pw_facade_test("varint_size_test") {
  build_args = {
    pw_protobuf_CONFIG = ":varint_size_test_config"
  }
  deps = [ ":pw_protobuf" ]
  sources = [ "varint_size_test.cc" ]
}

pw_proto_library("codegen_protos") {
  sources = [ "pw_protobuf_codegen_protos/codegen_options.proto" ]
}

pw_proto_library("common_protos") {
  sources = [
    "pw_protobuf_protos/common.proto",
    "pw_protobuf_protos/field_options.proto",
    "pw_protobuf_protos/status.proto",
  ]
}

pw_proto_library("codegen_test_deps_protos") {
  sources = [ "pw_protobuf_test_deps_protos/imported.proto" ]
  inputs = [ "pw_protobuf_test_deps_protos/imported.options" ]
}

pw_proto_library("codegen_test_protos") {
  sources = [
    "pw_protobuf_test_protos/full_test.proto",
    "pw_protobuf_test_protos/imported.proto",
    "pw_protobuf_test_protos/importer.proto",
    "pw_protobuf_test_protos/non_pw_package.proto",
    "pw_protobuf_test_protos/optional.proto",
    "pw_protobuf_test_protos/proto2.proto",
    "pw_protobuf_test_protos/repeated.proto",
    "pw_protobuf_test_protos/size_report.proto",
  ]
  inputs = [
    "pw_protobuf_test_protos/full_test.options",
    "pw_protobuf_test_protos/optional.options",
    "pw_protobuf_test_protos/imported.options",
    "pw_protobuf_test_protos/repeated.options",
  ]
  deps = [
    ":codegen_test_deps_protos",
    ":common_protos",
  ]
}

# The tests below have a large amount of global and static data.
# TODO(b/234883746): Replace this with a better size-based check.
_small_executable_target_types = [
  "stm32f429i_executable",
  "lm3s6965evb_executable",
]
_supports_large_tests =
    _small_executable_target_types + [ pw_build_EXECUTABLE_TARGET_TYPE ] -
    _small_executable_target_types != []

pw_fuzzer("encoder_fuzzer") {
  sources = [
    "encoder_fuzzer.cc",
    "fuzz.h",
  ]
  deps = [
    ":pw_protobuf",
    dir_pw_fuzzer,
    dir_pw_span,
  ]
  enable_test_if = _supports_large_tests
}

pw_fuzzer("decoder_fuzzer") {
  sources = [
    "decoder_fuzzer.cc",
    "fuzz.h",
  ]
  deps = [
    ":pw_protobuf",
    dir_pw_fuzzer,
    dir_pw_span,
    dir_pw_status,
    dir_pw_stream,
  ]
  enable_test_if = _supports_large_tests
}