# Copyright 2020 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.

import("//build/sdk/sdk_atom.gni")
import("//build/sdk/sdk_atom_alias.gni")

# Defines a host tool in the SDK.
#
# Parameters
#   category (required)
#     Publication level of the executable in SDKs.
#     See //build/sdk/sdk_atom.gni.
#
#   sdk_area (optional)
#     [string] The API area responsible for maintaining this host tool.
#     See //build/sdk/sdk_atom.gni.
#
#   sdk_name (optional)
#     Name of the library in the SDK.
#
#   binary (optional)
#     Path to the tool binary. Defaults to "$root_out_dir/$output_name".
#
#   output_name (optional)
#     The tool's name. Inferred from target_name by default.
#
#   sdk_deps (optional)
#     List of labels representing elements that should be added to SDKs
#     alongside the present binary.
#     Labels in the list must represent SDK-ready targets.
#
#   deps, etc.
#     Usual GN meaning.
template("sdk_host_tool") {
  assert(defined(invoker.category), "Must define an SDK category")

  output_name = target_name
  if (defined(invoker.output_name)) {
    output_name = invoker.output_name
  }

  sdk_name = output_name
  if (defined(invoker.sdk_name)) {
    sdk_name = invoker.sdk_name
  }

  binary = "$root_out_dir/$output_name"
  if (defined(invoker.binary)) {
    binary = invoker.binary
  }

  gn_deps = []
  if (defined(invoker.deps)) {
    gn_deps += invoker.deps
  }

  file_base = "tools/$output_name"

  if (host_os == "linux" || host_os == "mac") {
    file_base = "tools/$current_cpu/$sdk_name"
  }

  sdk_atom(target_name) {
    forward_variables_from(invoker,
                           [
                             "category",
                             "sdk_area",
                           ])

    id = "sdk://$file_base"

    meta = {
      dest = "$file_base-meta.json"
      schema = "host_tool"
      value = {
        type = "host_tool"
        name = output_name
        root = "tools"
        files = [ file_base ]
      }
    }

    files = [
      {
        source = binary
        dest = file_base
      },
    ]

    if (defined(invoker.sdk_deps)) {
      deps = invoker.sdk_deps
    }

    non_sdk_deps = invoker.deps
  }
}