# Copyright 2019 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

declare_args() {
  # The input to the size checker.
  # The build system will produce a JSON file to be consumed by the size checker, which
  # will check and prevent integration of subsystems that are over their space allocation.
  # The input consists of the following keys:
  #
  # asset_ext(string array): a list of extensions that should be considered as assets.
  #
  # asset_limit(number): maximum size (in bytes) allocated for the assets.
  #
  # core_limit(number): maximum size (in bytes) allocated for the core system and/or services.
  # This is sort of a "catch all" component that consists of all the area / packages that weren't
  # specified in the components list below.
  #
  # components(object array): a list of component objects. Each object should contain the following keys:
  #
  #   component(string): name of the component.
  #
  #   src(string array): path of the area / package to be included as part of the component.
  #   The path should be relative to the obj/ in the output directory.
  #   For example, consider two packages foo and far, built to out/.../obj/some_big_component/foo and out/.../obj/some_big_component/bar.
  #   If you want to impose a limit on foo, your src will be ["some_big_component/foo"].
  #   If you want to impose a limit on both foo and far, your src will be ["some_big_component"].
  #   If a package has config-data, those prebuilt blobs actually live under the config-data package.
  #   If you wish to impose a limit of those data as well, you should add "build/images/config-data/$for_pkg" to your src.
  #   The $for_pkg corresponds to the $for_pkg field in config.gni.
  #
  #   limit(number): maximum size (in bytes) allocated for the component.
  #
  # Example:
  # size_checker_input = {
  #   asset_ext = [ ".ttf" ]
  #   asset_limit = 10240
  #   core_limit = 10240
  #   components = [
  #     {
  #       component = "Foo"
  #       src = [ "topaz/runtime/foo_runner" ]
  #       limit = 10240
  #     },
  #     {
  #       component = "Bar"
  #       src = [ "build/images" ]
  #       limit = 20480
  #     },
  #   ]
  # }
  size_checker_input = {
  }
}

import("//build/go/go_binary.gni")
import("//build/go/go_library.gni")
import("//build/go/go_test.gni")
import("//build/host.gni")

group("cmd") {
  testonly = true
  public_deps = [
    ":host",
    ":tests",
  ]
}

generated_file("size_checker_json") {
  outputs = [ "$root_build_dir/size_checker.json" ]
  contents = size_checker_input
  output_conversion = "json"
}

go_library("size_checker_lib") {
  sources = [
    "size_checker.go",
    "size_checker_test.go",
  ]
}

go_binary("size_checker") {
  gopackage = "go.fuchsia.dev/fuchsia/tools/size_checker/cmd"

  deps = [ ":size_checker_lib" ]

  non_go_deps = [ ":size_checker_json" ]
}

if (is_host) {
  go_test("size_checker_tests") {
    gopackages = [ "go.fuchsia.dev/fuchsia/tools/size_checker/cmd" ]
    deps = [ ":size_checker_lib" ]
  }
}

install_host_tools("host") {
  deps = [ ":size_checker" ]
  outputs = [ "size_checker" ]
}

group("tests") {
  testonly = true
  deps = [
    ":size_checker_tests($host_toolchain)",

    # To be able to run `fx test`.
    "//tools/symbolizer($host_toolchain)",
  ]
}