# Copyright 2016 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("$flutter_root/lib/ui/dart_ui.gni")

import("//third_party/dart/runtime/bin/io_sources.gni")
import("//third_party/dart/runtime/lib/async_sources.gni")
import("//third_party/dart/runtime/lib/collection_sources.gni")
import("//third_party/dart/runtime/lib/convert_sources.gni")
import("//third_party/dart/runtime/lib/core_sources.gni")
import("//third_party/dart/runtime/lib/developer_sources.gni")
import("//third_party/dart/runtime/lib/internal_sources.gni")
import("//third_party/dart/runtime/lib/isolate_sources.gni")
import("//third_party/dart/runtime/lib/math_sources.gni")
import("//third_party/dart/runtime/lib/mirrors_sources.gni")
import("//third_party/dart/runtime/lib/typed_data_sources.gni")

import("//third_party/dart/utils/generate_patch_sdk.gni")

if (is_fuchsia) {
  import("//build/dart/toolchain.gni")
  import("//topaz/public/dart-pkg/fuchsia/sdk_ext.gni")
  import("//topaz/public/dart-pkg/zircon/sdk_ext.gni")
  import("//topaz/public/lib/ui/flutter/sdk_ext/sdk_ext.gni")
}

bindings_output_dir = "$root_gen_dir/sky/bindings"

copy("generate_dart_ui") {
  sources = dart_ui_files

  outputs = [
    "$bindings_output_dir/dart_ui/{{source_file_part}}",
  ]
}

if (is_fuchsia) {
  action("generate_package_map") {
    dart_deps = [
      "//third_party/dart-pkg/git/flutter/packages/flutter:flutter",
      "//topaz/public/lib/app/dart:dart",
      "//topaz/public/lib/fidl/dart",
    ]

    dot_packages_file = "$target_gen_dir/snapshot.packages"
    outputs = [
      dot_packages_file
    ]
    deps = []
    foreach(dep, dart_deps) {
      deps += [ "$dep($dart_toolchain)" ]
    }

    depfile = "$dot_packages_file.d"

    script = "//build/dart/gen_dot_packages.py"
    args = [
      "--out",
      rebase_path(dot_packages_file, root_build_dir),
      "--source-dir",
      rebase_path("."),
      "--root-build-dir",
      rebase_path(root_build_dir),
      "--root-gen-dir",
      rebase_path(dart_root_gen_dir),
      "--package-name",
      "snapshot_root",
      "--depfile",
      rebase_path(depfile),
      "--deps",
    ] + dart_deps
  }
}

action("generate_snapshot_bin") {
  if (is_fuchsia) {
    snapshot_dart = "snapshot_fuchsia.dart"
    # TODO(rmacnak): Fuchsia cross builds use the wrong Dart target
    # architecture, and have added steps that depend on this error for
    # reasonable build times (e.g., invoking the analyzer).
    if (target_cpu == host_cpu) {
      snapshot_kind = "core-jit"
    } else {
      snapshot_kind = "core"
    }
  } else {
    snapshot_dart = "snapshot.dart"
    snapshot_kind = "core"
  }

  deps = [
    ":generate_dart_ui",
    "//third_party/dart/runtime/bin:gen_snapshot($host_toolchain)",
  ]
  depfile = "$target_gen_dir/core_snapshot.d"

  inputs = [
             "//third_party/dart/runtime/tools/create_snapshot_bin.py",
             snapshot_dart,
           ] + dart_ui_files
  if (is_fuchsia) {
    deps += [ ":generate_package_map" ]
    inputs += [ "fuchsia_compilation_trace.txt" ]
  }

  vm_snapshot_data = "$target_gen_dir/vm_isolate_snapshot.bin"
  vm_snapshot_instructions = "$target_gen_dir/vm_snapshot_instructions.bin"
  isolate_snapshot_data = "$target_gen_dir/isolate_snapshot.bin"
  isolate_snapshot_instructions =
      "$target_gen_dir/isolate_snapshot_instructions.bin"
  outputs = [
    vm_snapshot_data,
    vm_snapshot_instructions,
    isolate_snapshot_data,
    isolate_snapshot_instructions,
  ]

  rebased_dart_ui_path = rebase_path(dart_ui_path)

  gen_snapshot_dir =
      get_label_info("//third_party/dart/runtime/bin:gen_snapshot($host_toolchain)",
                     "root_out_dir")
  script = "//third_party/dart/runtime/tools/create_snapshot_bin.py"

  args = [
    "--executable",
    rebase_path("$gen_snapshot_dir/gen_snapshot"),
    "--script",
    rebase_path(snapshot_dart),
    "--snapshot_kind",
    snapshot_kind,
    "--vm_flag",
    "--await_is_keyword",
    "--vm_flag",
    "--enable_mirrors=false",
    "--vm_output_bin",
    rebase_path(vm_snapshot_data, root_build_dir),
    "--vm_instructions_output_bin",
    rebase_path(vm_snapshot_instructions, root_build_dir),
    "--isolate_output_bin",
    rebase_path(isolate_snapshot_data, root_build_dir),
    "--isolate_instructions_output_bin",
    rebase_path(isolate_snapshot_instructions, root_build_dir),
    "--url_mapping=dart:ui,$rebased_dart_ui_path",
    "--vm_flag",
    "--dependencies=" + rebase_path(depfile),
  ]

  if (is_debug) {
    args += [
      "--vm_flag",
      "--enable_asserts",
      "--vm_flag",
      "--enable_type_checks",
      "--vm_flag",
      "--error_on_bad_type",
      "--vm_flag",
      "--error_on_bad_override",
    ]
  }

  if (is_fuchsia) {
    inputs += zircon_sdk_ext_files + mozart_dart_sdk_ext_files
    zircon_path = rebase_path(zircon_sdk_ext_lib)
    fuchsia_path = rebase_path(fuchsia_sdk_ext_lib)
    mozart_internal_path = rebase_path(mozart_dart_sdk_ext_lib)
    args += [
      "--url_mapping=dart:zircon,$zircon_path",
      "--url_mapping=dart:fuchsia,$fuchsia_path",
      "--url_mapping=dart:mozart.internal,$mozart_internal_path",
      "--packages",
      rebase_path("$target_gen_dir/snapshot.packages"),
      "--load_compilation_trace",
      rebase_path("fuchsia_compilation_trace.txt"),
    ]
  }
}

# Generates an assembly file defining a given symbol with the bytes from a
# binary file. Places the symbol in a text section if 'executable' is true,
# otherwise places the symbol in a read-only data section.
template("bin_to_assembly") {
  assert(defined(invoker.deps), "Must define deps")
  assert(defined(invoker.input), "Must define input binary file")
  assert(defined(invoker.output), "Must define output assembly file")
  assert(defined(invoker.symbol), "Must define symbol name")
  assert(defined(invoker.executable), "Must define boolean executable")

  action(target_name) {
    deps = invoker.deps
    script = "//third_party/dart/runtime/tools/bin_to_assembly.py"
    args = [
      "--input",
      rebase_path(invoker.input),
      "--output",
      rebase_path(invoker.output),
      "--symbol_name",
      invoker.symbol,
      "--target_os",
      current_os,
    ]
    if (invoker.executable) {
      args += [ "--executable" ]
    }
    inputs = [
      script,
      invoker.input,
    ]
    outputs = [
      invoker.output,
    ]
  }
}

bin_to_assembly("vm_snapshot_data_assembly") {
  deps = [
    ":generate_snapshot_bin",
  ]
  input = "$target_gen_dir/vm_isolate_snapshot.bin"
  output = "$target_gen_dir/vm_snapshot_data.S"
  symbol = "kDartVmSnapshotData"
  executable = false
}

bin_to_assembly("vm_snapshot_instructions_assembly") {
  deps = [
    ":generate_snapshot_bin",
  ]
  input = "$target_gen_dir/vm_snapshot_instructions.bin"
  output = "$target_gen_dir/vm_snapshot_instructions.S"
  symbol = "kDartVmSnapshotInstructions"
  executable = true
}

bin_to_assembly("isolate_snapshot_data_assembly") {
  deps = [
    ":generate_snapshot_bin",
  ]
  input = "$target_gen_dir/isolate_snapshot.bin"
  output = "$target_gen_dir/isolate_snapshot_data.S"
  symbol = "kDartIsolateCoreSnapshotData"
  executable = false
}

bin_to_assembly("isolate_snapshot_instructions_assembly") {
  deps = [
    ":generate_snapshot_bin",
  ]
  input = "$target_gen_dir/isolate_snapshot_instructions.bin"
  output = "$target_gen_dir/isolate_snapshot_instructions.S"
  symbol = "kDartIsolateCoreSnapshotInstructions"
  executable = true
}

source_set("snapshot") {
  deps = [
    ":isolate_snapshot_data_assembly",
    ":isolate_snapshot_instructions_assembly",
    ":vm_snapshot_data_assembly",
    ":vm_snapshot_instructions_assembly",
  ]
  sources = [
    "$target_gen_dir/isolate_snapshot_data.S",
    "$target_gen_dir/isolate_snapshot_instructions.S",
    "$target_gen_dir/vm_snapshot_data.S",
    "$target_gen_dir/vm_snapshot_instructions.S",
  ]
}

# Generate flutter_patched_sdk

template("process_library_source") {
  assert(defined(invoker.libsources), "Need libsources in $target_name")
  assert(defined(invoker.output), "Need output in $target_name")
  action(target_name) {
    deps = [
      ":generate_dart_ui",
    ]

    visibility = [ ":*" ]  # Only targets in this file can see this.
    libsources = invoker.libsources

    script = invoker.script
    inputs = invoker.inputs + libsources
    outputs = [
      invoker.output,
    ]
    args = invoker.args + rebase_path(libsources, root_build_dir)
  }
}

template("concatenate_patch") {
  assert(defined(invoker.libsources), "Need a sources in $target_name")
  assert(defined(invoker.output), "Need an output in $target_name")

  process_library_source(target_name) {
    libsources = invoker.libsources
    inputs = []
    output = invoker.output
    script = "//third_party/dart/runtime/tools/concatenate_patches.py"
    args = [
      "--output",
      rebase_path(output, root_build_dir),
    ]
  }
}

template("generate_vm_patched_sdk") {
  assert(defined(invoker.libraries), "Need libraries in $target_name")

  concatenation_target_names = []

  # Concatenate vm library patches.
  foreach(library, invoker.libraries) {
    name = library[0]

    target_output = "$target_gen_dir/patches/${name}_patch.dart"
    concatenate_patch("concatenate_${name}_patch") {
      libsources = rebase_path(library[1], ".", library[2])
      output = target_output
    }
    concatenation_target_names += [ ":concatenate_${name}_patch" ]
  }

  # Build the patched sdk out of the concatenated patches and the special
  # libraries.
  generate_patched_sdk(target_name) {
    mode = "flutter"
    deps = concatenation_target_names + ["//third_party/dart/runtime/vm:kernel_platform_files"]
    input_patches_dir = "$target_gen_dir/patches"
    patched_sdk_dir = "flutter_patched_sdk"
    outputs = [
        "$root_out_dir/${patched_sdk_dir}/lib/libraries.json",
    ]
  }
}

generate_vm_patched_sdk("flutter_patched_sdk") {
  libraries = [
    [
      "async",
      async_runtime_sources,
      "//third_party/dart/runtime/lib",
    ],
    [
      "collection",
      collection_runtime_sources,
      "//third_party/dart/runtime/lib",
    ],
    [
      "convert",
      convert_runtime_sources,
      "//third_party/dart/runtime/lib",
    ],
    [
      "core",
      core_runtime_sources,
      "//third_party/dart/runtime/lib",
    ],
    [
      "developer",
      developer_runtime_sources,
      "//third_party/dart/runtime/lib",
    ],
    [
      "internal",
      internal_runtime_sources,
      "//third_party/dart/runtime/lib",
    ],
    [
      "io",
      io_runtime_sources,
      "//third_party/dart/runtime/bin",
    ],
    [
      "isolate",
      isolate_runtime_sources,
      "//third_party/dart/runtime/lib",
    ],
    [
      "math",
      math_runtime_sources,
      "//third_party/dart/runtime/lib",
    ],
    [
      "mirrors",
      mirrors_runtime_sources,
      "//third_party/dart/runtime/lib",
    ],
    [
      "typed_data",
      typed_data_runtime_sources,
      "//third_party/dart/runtime/lib",
    ],
  ]
}

action("compile_platform") {
  script = "//third_party/dart/tools/compile_platform.py"

  sources = [
    "$root_out_dir/flutter_patched_sdk/lib/libraries.json",
  ]

  outputs = [
    "$root_out_dir/flutter_patched_sdk/platform.dill",
    "$root_out_dir/flutter_patched_sdk/vm_outline.dill",
  ]

  inputs = []

  deps = [
    ":flutter_patched_sdk",
  ]

  depfile = "$root_out_dir/flutter_patched_sdk/platform.dill.d"

  args = [
            "--target=flutter",
            "dart:core"
         ] + rebase_path(sources, root_build_dir) +
         rebase_path(outputs, root_build_dir)
}

group("kernel_platform_files") {
  public_deps = [
    ":compile_platform",
  ]
}