# 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.

# This exposes the Chrome version as GN variables for use in build files.
# This also generates the various version codes used for builds of chrome for
# android.
#
# PREFER NOT TO USE THESE. The GYP build uses this kind of thing extensively.
# However, it is far better to write an action (or use the process_version
# wrapper in build/util/version.gni) to generate a file at build-time with the
# information you need. This allows better dependency checking and GN will
# run faster.
#
# These values should only be used if you REALLY need to depend on them at
# build-time, for example, in the computation of output file names.

# Give version.py a pattern that will expand to a GN scope consisting of
# all values we need at once.
_version_dictionary_template = "full = \"@MAJOR@.@MINOR@.@BUILD@.@PATCH@\" " +
                               "major = \"@MAJOR@\" minor = \"@MINOR@\" " +
                               "build = \"@BUILD@\" patch = \"@PATCH@\" "

# The file containing the Chrome version number.
chrome_version_file = "//chrome/VERSION"

_script_arguments = []

if (target_os == "mac") {
  _version_dictionary_template += "patch_hi = @PATCH_HI@ patch_lo = @PATCH_LO@ "

  _script_arguments += [
    "-e",
    "PATCH_HI=int(PATCH)//256",
    "-e",
    "PATCH_LO=int(PATCH)%256",
  ]
} else if (target_os == "android") {
  import("//build/config/android/config.gni")

  _version_dictionary_template +=
      "chrome_version_code = " + "\"@CHROME_VERSION_CODE@\" " +
      "chrome_modern_version_code = \"@CHROME_MODERN_VERSION_CODE@\" " +
      "monochrome_version_code = \"@MONOCHROME_VERSION_CODE@\" " +
      "trichrome_version_code = \"@TRICHROME_VERSION_CODE@\" " +
      "notouch_chrome_version_code = \"@NOTOUCH_CHROME_VERSION_CODE@\" " +
      "webview_stable_version_code = \"@WEBVIEW_STABLE_VERSION_CODE@\" " +
      "webview_beta_version_code = \"@WEBVIEW_BETA_VERSION_CODE@\" " +
      "webview_dev_version_code = \"@WEBVIEW_DEV_VERSION_CODE@\" "

  if (target_cpu == "arm64" || target_cpu == "x64") {
    _version_dictionary_template +=
        "monochrome_64_32_version_code = \"@MONOCHROME_64_32_VERSION_CODE@\" " +
        "monochrome_64_version_code = \"@MONOCHROME_64_VERSION_CODE@\" " +
        "trichrome_64_32_version_code = \"@TRICHROME_64_32_VERSION_CODE@\" " +
        "trichrome_64_version_code = \"@TRICHROME_64_VERSION_CODE@\" "
  }

  _script_arguments += [
    "-a",
    target_cpu,
  ]

  if (!public_android_sdk) {
    _script_arguments += [ "--next" ]
  }
}

_script_arguments += [
  "-f",
  rebase_path(chrome_version_file, root_build_dir),
  "-t",
  _version_dictionary_template,
  "--os",
  target_os,
]

_result = exec_script("version.py",
                      _script_arguments,
                      "scope",
                      [ chrome_version_file ])

# Full version. For example "45.0.12321.0"
chrome_version_full = _result.full

# The consituent parts of the full version.
chrome_version_major = _result.major
chrome_version_minor = _result.minor
chrome_version_build = _result.build
chrome_version_patch = _result.patch

if (target_os == "mac") {
  chrome_version_patch_hi = _result.patch_hi
  chrome_version_patch_lo = _result.patch_lo

  chrome_dylib_version = "$chrome_version_build.$chrome_version_patch_hi" +
                         ".$chrome_version_patch_lo"
} else if (target_os == "android") {
  forward_variables_from(_result,
                         [
                           "chrome_modern_version_code",
                           "chrome_version_code",
                           "monochrome_64_32_version_code",
                           "monochrome_64_version_code",
                           "monochrome_version_code",
                           "notouch_chrome_version_code",
                           "trichrome_64_32_version_code",
                           "trichrome_64_version_code",
                           "trichrome_version_code",
                           "webview_beta_version_code",
                           "webview_dev_version_code",
                           "webview_stable_version_code",
                         ])

  chrome_version_name = chrome_version_full

  lines_to_write = [
    "VersionName: $chrome_version_name",
    "Chrome: $chrome_version_code",
    "ChromeModern: $chrome_modern_version_code",
    "Monochrome: $monochrome_version_code",
    "TrichromeChrome: $trichrome_version_code",
    "MonochromeFP: $notouch_chrome_version_code",
    "AndroidWebviewStable: $webview_stable_version_code",
    "AndroidWebviewBeta: $webview_beta_version_code",
    "AndroidWebviewDev: $webview_dev_version_code",
  ]

  if (target_cpu == "arm64" || target_cpu == "x64") {
    lines_to_write += [
      "Monochrome6432: $monochrome_64_32_version_code",
      "Monochrome64: $monochrome_64_version_code",
      "TrichromeChrome6432: $trichrome_64_32_version_code",
      "TrichromeChrome64: $trichrome_64_version_code",
    ]
  }

  write_file("$root_out_dir/android_chrome_versions.txt", lines_to_write)
}