# Copyright 2018 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/dart/dart_tool.gni")
import("//build/host.gni")
import("//third_party/dart/utils/compile_platform.gni")
import("//topaz/runtime/dart/dart_component.gni")
import("//topaz/runtime/dart/dart_kernel.gni")
import("//topaz/runtime/flutter_runner/prebuilt_framework.gni")

compile_platform("kernel_platform_files") {
  single_root_scheme = "org-dartlang-sdk"
  single_root_base = rebase_path("../../../../")

  libraries_specification_uri =
      "org-dartlang-sdk:///topaz/runtime/flutter_runner/kernel/libraries.json"

  outputs = [
    "$root_out_dir/flutter_runner_patched_sdk/platform_strong.dill",
    "$root_out_dir/flutter_runner_patched_sdk/vm_outline_strong.dill",
  ]

  args = [
    # TODO(dartbug.com/36342): enable bytecode for core libraries when performance of bytecode
    # pipeline is on par with default pipeline and continuously tracked.
    # "--bytecode",
    "--target=flutter_runner",
    "dart:core",
  ]
}

dart_kernel("framework_shim") {
  platform_name = "flutter_runner"
  platform_deps =
      [ "//topaz/runtime/flutter_runner/kernel:kernel_platform_files" ]
  platform_path = "$root_out_dir/flutter_runner_patched_sdk"
  disable_analysis = true
  gen_bytecode = true
  args = []

  main_dart = "framework_shim.dart"
  deps = [
    "//third_party/dart-pkg/git/flutter/packages/flutter",
  ]
  manifest = "$target_gen_dir/framework_shim.dilpmanifest"
}

dart_kernel("framework_shim_product") {
  platform_name = "flutter_runner"
  platform_deps =
      [ "//topaz/runtime/flutter_runner/kernel:kernel_platform_files" ]
  platform_path = "$root_out_dir/flutter_runner_patched_sdk"
  disable_analysis = true
  gen_bytecode = true
  product = true
  args = []

  main_dart = "framework_shim.dart"
  deps = [
    "//third_party/dart-pkg/git/flutter/packages/flutter",
  ]
  manifest = "$target_gen_dir/framework_shim_product.dilpmanifest"
}

template("core_snapshot") {
  assert(defined(invoker.product),
         "core_snapshot requires 'product' to be defined")
  assert(defined(invoker.framework),
         "core_snapshot requires 'framework' to be defined")

  suffix = ""
  if (invoker.product) {
    suffix = "${suffix}_product"
  }
  if (invoker.framework) {
    suffix = "${suffix}_framework"
  }

  product_suffix = ""
  if (invoker.product) {
    product_suffix = "_product"
  }

  action(target_name) {
    deps = gen_snapshot_deps + [ ":kernel_platform_files" ]

    platform_dill =
        "$root_out_dir/flutter_runner_patched_sdk/platform_strong.dill"
    compilation_trace = "//topaz/runtime/flutter_runner/compilation_trace.txt"
    inputs = [
      platform_dill,
      compilation_trace,
    ]

    vm_snapshot_data = "$target_gen_dir/vm_isolate_snapshot${suffix}.bin"
    vm_snapshot_instructions =
        "$target_gen_dir/vm_snapshot_instructions${suffix}.bin"
    isolate_snapshot_data = "$target_gen_dir/isolate_snapshot${suffix}.bin"
    isolate_snapshot_instructions =
        "$target_gen_dir/isolate_snapshot_instructions${suffix}.bin"
    snapshot_profile = "$target_gen_dir/snapshot_profile${suffix}.json"
    outputs = [
      vm_snapshot_data,
      vm_snapshot_instructions,
      isolate_snapshot_data,
      isolate_snapshot_instructions,
      snapshot_profile,
    ]

    if (invoker.product) {
      script = gen_snapshot_product
    } else {
      script = gen_snapshot
    }
    args = [
      # TODO(FL-117): Re-enable causal async stack traces when this issue is
      # addressed.
      "--no_causal_async_stacks",
      "--use_bytecode_compiler",
      "--enable_mirrors=false",
      "--deterministic",
      "--snapshot_kind=core-jit",
      "--load_compilation_trace=" +
          rebase_path(compilation_trace, root_build_dir),
      "--vm_snapshot_data=" + rebase_path(vm_snapshot_data, root_build_dir),
      "--vm_snapshot_instructions=" +
          rebase_path(vm_snapshot_instructions, root_build_dir),
      "--isolate_snapshot_data=" +
          rebase_path(isolate_snapshot_data, root_build_dir),
      "--isolate_snapshot_instructions=" +
          rebase_path(isolate_snapshot_instructions, root_build_dir),
      "--write_v8_snapshot_profile_to=" +
          rebase_path(snapshot_profile, root_build_dir),
    ]
    # No asserts in debug or release product.
    # No asserts in release with flutter_profile=true (non-product)
    # Yes asserts in non-product debug.
    if (!invoker.product && (!flutter_profile || is_debug)) {
      args += [ "--enable_asserts" ]
    }
    args += [ rebase_path(platform_dill) ]

    if (invoker.framework) {
      if (prebuilt_framework_path == "") {
        deps += [ ":framework_shim${product_suffix}_kernel" ]
        inputs += [ "$target_gen_dir/framework_shim${product_suffix}_kernel.dil" ]
        args += [ rebase_path("$target_gen_dir/framework_shim${product_suffix}_kernel.dil") ]
      } else {
        deps += [ ":extract_prebuilt_framework" ]
        foreach(package, framework_packages) {
          args += [ rebase_path(
                  "$target_gen_dir/data/$prebuilt_framework_name/$package.dilp") ]
          inputs +=
              [ "$target_gen_dir/data/$prebuilt_framework_name/$package.dilp" ]
        }
      }
    } else {
      not_needed(["product_suffix"])
    }
  }
}

core_snapshot("kernel_core_snapshot") {
  product = false
  framework = false
}

core_snapshot("kernel_core_snapshot_framework") {
  product = false
  framework = true
}

core_snapshot("kernel_core_snapshot_product") {
  product = true
  framework = false
}

core_snapshot("kernel_core_snapshot_product_framework") {
  product = true
  framework = true
}

dart_tool("extract_far") {
  main_dart = "extract_far.dart"

  force_prebuilt_dart = true
  disable_analysis = true

  source_dir = "."
  sources = [
    "extract_far.dart",
  ]

  deps = [
    "//third_party/dart-pkg/pub/args",
  ]
}

if (prebuilt_framework_path != "") {
  action("extract_prebuilt_framework") {
    deps = [
      ":extract_far",
      "//garnet/bin/far:host",
    ]

    inputs = [
      prebuilt_framework_path,
    ]

    script = get_label_info(":extract_far", "root_out_dir") +
             "/dart-tools/extract_far"
    args = [
      "--far-tool",
      rebase_path("$host_tools_dir/far"),
      "--archive",
      rebase_path(prebuilt_framework_path),
      "--out-dir",
      rebase_path(target_gen_dir),
    ]

    outputs = []
    foreach(package, framework_packages) {
      args += [ "data/$prebuilt_framework_name/$package.dilp" ]
      outputs +=
          [ "$target_gen_dir/data/$prebuilt_framework_name/$package.dilp" ]
    }
    args += [ "data/$prebuilt_framework_name/app.frameworkversion" ]
    outputs +=
        [ "$target_gen_dir/data/$prebuilt_framework_name/app.frameworkversion" ]
  }
}