# Copyright 2015 The Chromium 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/toolchain/toolchain.gni")

declare_args() {
  # SDK path to use. When empty this will use the default SDK based on the
  # value of use_ios_simulator.
  ios_sdk_path = ""
  ios_sdk_name = ""
  ios_sdk_version = ""
  ios_sdk_platform = ""
  ios_sdk_platform_path = ""
  xcode_version = ""
  xcode_build = ""
  machine_os_build = ""

  # Version of iOS that we're targeting.
  ios_deployment_target = "9.0"

  # The iOS Code signing identity to use
  # TODO(GYP), TODO(sdfresne): Consider having a separate
  # ios_enable_code_signing_flag=<bool> flag to make the invocation clearer.
  ios_enable_code_signing = true
  ios_code_signing_identity = ""

  # Prefix for CFBundleIdentifier property of iOS bundles (correspond to the
  # "Organization Identifier" in Xcode). Code signing will fail if no mobile
  # provisioning for the selected code signing identify support that prefix.
  ios_app_bundle_id_prefix = "org.chromium"

  # If true, then allow using Xcode to automatically manage certificates. This
  # requires loading a separate Xcode project and enable automatically managed
  # certificates. When true, all test application will use the same bundle id
  # to avoid running out of certificates if using a free account.
  ios_automatically_manage_certs = true

  # If non-empty, this list must contain valid cpu architecture, and the final
  # build will be a multi-architecture build (aka fat build) supporting the
  # main $target_cpu architecture and all of $additional_target_cpus.
  #
  # For example to build an application that will run on both arm64 and armv7
  # devices, you would use the following in args.gn file when running "gn args":
  #
  #   target_os = "ios"
  #   target_cpu = "arm64"
  #   additional_target_cpus = [ "arm" ]
  #
  # You can also pass the value via "--args" parameter for "gn gen" command by
  # using the syntax --args='additional_target_cpus=["arm"] target_cpu="arm64"'.
  additional_target_cpus = []
}

assert(custom_toolchain == "" || additional_target_cpus == [],
       "cannot define both custom_toolchain and additional_target_cpus")

use_ios_simulator = current_cpu == "x86" || current_cpu == "x64"

# Initialize additional_toolchains from additional_target_cpus. Assert here
# that the list does not contains $target_cpu nor duplicates as this would
# cause weird errors during the build.
additional_toolchains = []
if (additional_target_cpus != []) {
  foreach(_additional_target_cpu, additional_target_cpus) {
    assert(_additional_target_cpu != target_cpu,
           "target_cpu must not be listed in additional_target_cpus")

    _toolchain = "//build/toolchain/mac:ios_clang_$_additional_target_cpu"
    foreach(_additional_toolchain, additional_toolchains) {
      assert(_toolchain != _additional_toolchain,
             "additional_target_cpus must not contains duplicate values")
    }

    additional_toolchains += [ _toolchain ]
  }
}

if (ios_sdk_path == "") {
  # Compute default target.
  if (use_ios_simulator) {
    ios_sdk_name = "iphonesimulator"
    ios_sdk_platform = "iPhoneSimulator"
  } else {
    ios_sdk_name = "iphoneos"
    ios_sdk_platform = "iPhoneOS"
  }

  ios_sdk_info_args = []
  if (!use_system_xcode) {
    ios_sdk_info_args += [
      "--developer_dir",
      hermetic_xcode_path,
    ]
  }
  ios_sdk_info_args += [ ios_sdk_name ]
  script_name = "//build/config/mac/sdk_info.py"
  _ios_sdk_result = exec_script(script_name, ios_sdk_info_args, "scope")
  ios_sdk_path = _ios_sdk_result.sdk_path
  ios_sdk_version = _ios_sdk_result.sdk_version
  ios_sdk_platform_path = _ios_sdk_result.sdk_platform_path
  ios_sdk_build = _ios_sdk_result.sdk_build
  xcode_version = _ios_sdk_result.xcode_version
  xcode_build = _ios_sdk_result.xcode_build
  machine_os_build = _ios_sdk_result.machine_os_build
  if (use_ios_simulator) {
    # This is weird, but Xcode sets DTPlatformBuild to an empty field for
    # simulator builds.
    ios_platform_build = ""
  } else {
    ios_platform_build = ios_sdk_build
  }
}

if (ios_enable_code_signing && !use_ios_simulator) {
  find_signing_identity_args = []
  if (!use_system_xcode) {
    find_signing_identity_args += [
      "--developer_dir",
      hermetic_xcode_path,
    ]
  }

  # If an identity is not provided, look for one on the host
  if (ios_code_signing_identity == "") {
    _ios_identities = exec_script("find_signing_identity.py",
                                  find_signing_identity_args,
                                  "list lines")
    ios_code_signing_identity = _ios_identities[0]
  }

  if (ios_code_signing_identity == "") {
    print("Tried to prepare a device build without specifying a code signing")
    print("identity and could not detect one automatically either.")
    print("TIP: Simulator builds don't require code signing...")
    assert(false)
  }
}