# 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.

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

# A prebuilt host executable which can be bundled in an SDK.
#
#   prebuilt (required)
#     Label of the prebuilt executable.
#
#   category (required)
#     Publication level of the executable in SDKs.
#     See //build/sdk/sdk_atom.gni.
#
#   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.

template("sdk_prebuilt_executable") {
  assert(defined(invoker.category), "Must define an SDK category")
  assert(defined(invoker.prebuilt), "Must set the path")
  if (is_fuchsia) {
    assert(false, "Only valid for host tools")
  }

  main_target_name = target_name

  group(main_target_name) {
    # No-op target, only used to abide by naming conventions.
  }

  tool_name = get_path_info(invoker.prebuilt, "file")
  file_base = "tools/$tool_name"

  _legacy_tool_diff = sdk_legacy_tool_allowlist
  _legacy_tool_diff += [ tool_name ]
  _legacy_tool_diff -= [ tool_name ]
  is_legacy_tool = _legacy_tool_diff != sdk_legacy_tool_allowlist

  # TODO(fxbug.dev/42999): remove extra atom
  if (is_legacy_tool && current_cpu == host_cpu) {
    sdk_atom("${target_name}_sdk_legacy") {
      id = "sdk://$file_base"

      category = invoker.category

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

      files = [
        {
          source = invoker.prebuilt
          dest = file_base
        },
      ]

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

      non_sdk_deps = [ ":$main_target_name" ]
      if (defined(invoker.non_sdk_deps)) {
        non_sdk_deps += invoker.non_sdk_deps
      }
    }
  } else {
    # TODO(fxbug.dev/42999): dummy target to soften transition.
    # Remove once all petal dependents are removed.
    _non_legacy_name = ":" + target_name + "_sdk"
    sdk_atom_alias("${target_name}_sdk_legacy") {
      atom = _non_legacy_name
    }
  }

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

  sdk_atom("${target_name}_sdk") {
    id = "sdk://$file_base"

    category = invoker.category

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

    files = [
      {
        source = invoker.prebuilt
        dest = file_base
      },
    ]

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

    non_sdk_deps = [ ":$main_target_name" ]
    if (defined(invoker.non_sdk_deps)) {
      non_sdk_deps += invoker.non_sdk_deps
    }
  }
}