# 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("//base/android/linker/config.gni")
import("//base/android/proguard/proguard.gni")
import("//build/config/android/rules.gni")
import("//build/config/locales.gni")
import("//build/config/android/extract_unwind_tables.gni")
import("//build/config/compiler/compiler.gni")
import("//chrome/common/features.gni")
import("//device/vr/buildflags/buildflags.gni")
import("//third_party/leakcanary/config.gni")
import("channel.gni")

declare_args() {
  # Enable multidex in release builds.
  multidex_in_release = false
}

default_chrome_public_jinja_variables = [
  "channel=$android_channel",
  "enable_arcore=$enable_arcore",
  "enable_leakcanary=$enable_leakcanary",
  "enable_vr=$enable_vr",
]

# A template used to declare any target that will implement a full Chromium
# or Chrome application, either as an APK, or an app bundle module.
#
# Variables:
#   target_type: Either 'android_apk' or 'android_app_bundle_module'.
#   apk_name: For APK target types, the final APK name without a suffix.
#   module_name: For bundle module target types, the module's name without a
#     suffix.
#   is_base_module: For bundle module target types, true iff this is a base
#     application module, instead of a feature module.
#   android_manifest: Application manifest path.
#   android_manifest_dep: Name of target generating the android_manifest.
#   shared_libraries: List of native shared libraries targets to include in
#     the final target (e.g. [ ":libchrome" ]).
#   add_unwind_tables_in_apk: Optional. If true, add the unwind tables to the
#     final APK or bundle.
#   is_modern: If true, indicates this corresponds to a chrome_modern_XXX
#     target that can only run on Android L-M.
#   png_to_webp: Optional. If true, convert image resources to webp format.
#     requires Android K+, since these were not supported by Android properly
#     before 4.3.0.
#   load_library_from_apk: Optional. If true, native libraries will be loaded
#     directly from the APK (and stored zipaligned and uncompressed). This
#     requires either the Chromium linker, or Android M+.
#   version_name: Application version name (e.g. "Developer Build").
#   is_modern: Optional. true iff this is a chrome_modern derived build.
#
#   Plus all other variables accepted by android_apk() or
#   android_app_bundle_module(), depending on the target type.
#
template("chrome_public_common_apk_or_module_tmpl") {
  assert(defined(invoker.target_type), "target_type is required!")
  assert(
      invoker.target_type == "android_apk" ||
          invoker.target_type == "android_app_bundle_module",
      "Invalid target_type definition, should be 'android_apk' or 'android_app_bundle_module'")

  # Adds unwind table asset to the chrome apk for the given library target. This
  # is not part of generic apk assets target since it depends on the main shared
  # library of the apk, to extract unwind tables.
  if (defined(invoker.add_unwind_tables_in_apk) &&
      invoker.add_unwind_tables_in_apk) {
    _unwind_asset = "${target_name}_unwind_assets"
    unwind_table_asset(_unwind_asset) {
      if (defined(invoker.testonly)) {
        testonly = invoker.testonly
      }

      library_target = invoker.shared_library_for_unwind_asset
      deps = invoker.shared_libraries
    }
  }

  if (!defined(invoker.target_type)) {
    _target_type = "android_apk"
  } else {
    _target_type = invoker.target_type
  }

  _is_modern = defined(invoker.is_modern) && invoker.is_modern
  assert(_is_modern || !_is_modern)  # Mark as used.

  target(_target_type, target_name) {
    forward_variables_from(invoker, "*")
    exclude_xxxhdpi = true

    # Use zh-TW strings for zh-HK (https://crbug.com/780847).
    support_zh_hk = true

    # Whitelist rationale in https://crbug.com/691733.
    xxxhdpi_whitelist = [
      "*shadow*",  # Combination of gradient & transparency cause pixelation.
      "*.9.*",  # Most nine-patches contain shadows.
      "*ic_file_download_white*",  # Bottom edge seems misaligned.
      "*ic_lock.*",  # Bottom edge seems misaligned.
    ]

    if (defined(shared_libraries) && shared_libraries != []) {
      _native_lib_file =
          rebase_path("$root_gen_dir/CHROME_VERSION.json", root_out_dir)
      native_lib_version_arg = "@FileArg($_native_lib_file:full-quoted)"
      native_lib_version_rule = "//build/util:chrome_version_json"
    }
    if (!defined(aapt_locale_whitelist)) {
      aapt_locale_whitelist = locales - android_chrome_omitted_locales
    }

    if (is_java_debug || multidex_in_release) {
      enable_multidex = true
      if (!defined(negative_main_dex_globs)) {
        negative_main_dex_globs = [
          "*ApplicationStatus*",  # Doesn't work in non-browser process.
          "*ChromeActivity*",  # Pulls in the world, so ensure it doesn't slip in.
          "*GoogleApiAvailability*",  # Play Services only in browser process.
          "*R\$*",  # Should not use resources from non-browser process.
        ]
      }

      # Allow targets to append to the default list.
      if (defined(extra_negative_main_dex_globs)) {
        negative_main_dex_globs += extra_negative_main_dex_globs
      }
    }
    if (!is_java_debug) {
      proguard_enabled = true
      if (!defined(proguard_configs)) {
        proguard_configs = []
      }
      proguard_configs += [
        "//chrome/android/java/proguard.flags",
        "//base/android/proguard/chromium_apk.flags",
        "//base/android/proguard/chromium_code.flags",
      ]
      if (enable_proguard_obfuscation) {
        proguard_configs +=
            [ "//base/android/proguard/enable_obfuscation.flags" ]
      } else {
        proguard_configs +=
            [ "//base/android/proguard/disable_all_obfuscation.flags" ]
      }
    }

    if (!defined(use_chromium_linker)) {
      use_chromium_linker = chromium_linker_supported
    }

    if (use_chromium_linker) {
      if (!defined(load_library_from_apk)) {
        # Whether native libraries should be loaded from within the apk.
        # Only attempt loading the library from the APK for 64 bit devices
        # until the number of 32 bit devices which don't support this
        # approach falls to a minimal level -  http://crbug.com/390618.
        load_library_from_apk = chromium_linker_supported &&
                                (current_cpu == "arm64" || current_cpu == "x64")
      }
    }
    if (_target_type == "android_apk") {
      command_line_flags_file = "chrome-command-line"
    }
    product_version_resources_dep = "//chrome/android:product_version_resources"

    if (defined(invoker.add_unwind_tables_in_apk) &&
        invoker.add_unwind_tables_in_apk) {
      deps += [ ":$_unwind_asset" ]
    }

    if (enable_vr) {
      deps += [ "//chrome/browser/android/vr:java" ]
    }
  }
}

# The equivalent of chrome_common_apk_or_module_tmpl for all builds of
# monochrome.
template("monochrome_public_common_apk_or_module_tmpl") {
  chrome_public_common_apk_or_module_tmpl(target_name) {
    # Always build 64-bit //android_webview:monochrome because Chrome runs
    # in 32-bit mode.
    if (android_64bit_target_cpu) {
      shared_libraries = [ "//android_webview:monochrome" ]
    } else {
      shared_libraries = [ "//chrome/android:monochrome" ]
    }
    if (android_64bit_target_cpu && build_apk_secondary_abi) {
      secondary_abi_shared_libraries =
          [ "//chrome/android:monochrome_secondary_abi_lib" ]
    }

    alternative_android_sdk_dep = webview_framework_dep
    app_as_shared_lib = true
    use_chromium_linker = false
    requires_sdk_api_level_23 = true

    # Webview supports all locales (has no omitted ones).
    aapt_locale_whitelist = locales

    if (!defined(invoker.target_type) || invoker.target_type == "android_apk") {
      # Incremental install doesn't work for monochrome. See crbug.com/663492.
      never_incremental = true
    }

    # Strip xml namespaces for monochrome. This should only be done for apks
    # targeting API > 21 which for chrome is only Monochrome. This is due to
    # how android public and private resource ids are namespaced.
    no_xml_namespaces = true

    # Configrations to make android load shared library from APK.
    uncompress_shared_libraries = true

    forward_variables_from(invoker, "*")

    # Android N+ better supports multiple locales (https://crbug.com/780847).
    support_zh_hk = false

    if (!defined(deps)) {
      deps = []
    }
    deps += [
      "//android_webview:monochrome_webview_assets",
      "//android_webview/apk:webview_license_activity_java",
      "//android_webview/glue",
      "//chrome/android:chrome_public_non_pak_assets",
      "//chrome/android:monochrome_pak_assets",
      "//chrome/android/monochrome:monochrome_license_provider_java",
    ]

    if ((is_java_debug || multidex_in_release) &&
        !defined(invoker.negative_main_dex_globs)) {
      # WebView pulls play services into the main dex.
      negative_main_dex_globs = [
        # TODO(agrieve): Add ApplicationStatus to this list. It's currently
        #     included because of ActivityWindowAndroid, but is never used at
        #     runtime by webview.
        "*ChromeActivity*",  # Pulls in the world, so ensure it doesn't slip in.
      ]
    }

    if (!is_java_debug) {
      if (!defined(proguard_configs)) {
        proguard_configs = []
      }
      proguard_configs += [ "//android_webview/apk/java/proguard.flags" ]
      png_to_webp = true
    }

    if (enable_arcore) {
      deps += [ "//third_party/arcore-android-sdk:libdynamite_client_java" ]
    }
    if (package_arcore) {
      # We store this as a separate .so in the APK and only load as needed.
      if (android_64bit_target_cpu && build_apk_secondary_abi) {
        deps += [
          "//third_party/arcore-android-sdk:libarcore_library_secondary_abi",
        ]
        toolchain_out_dir = get_label_info(
                "//third_party/arcore-android-sdk:libarcore_library($android_secondary_abi_toolchain)",
                "root_out_dir")
        secondary_abi_loadable_modules =
            [ "${toolchain_out_dir}/libarcore_sdk_c_minimal.so" ]
      } else {
        deps += [ "//third_party/arcore-android-sdk:libarcore_library" ]
        loadable_modules = [ "${root_out_dir}/libarcore_sdk_c_minimal.so" ]
      }
    }
  }
}

# These empty templates are still being called from the clank/ BUILD.gn
# scripts. Remove them when they have been fixed to call the
# xxx_common_apk_or_module_tmpl templates above.

template("chrome_public_apk_tmpl") {
  chrome_public_common_apk_or_module_tmpl(target_name) {
    forward_variables_from(invoker, "*")
    target_type = "android_apk"
  }
}

template("monochrome_public_apk_tmpl") {
  monochrome_public_common_apk_or_module_tmpl(target_name) {
    forward_variables_from(invoker, "*")
    target_type = "android_apk"
  }
}