# Copyright 2018 the Deno authors. All rights reserved. MIT license.
import("//third_party/v8/gni/v8.gni")
import("//third_party/v8/snapshot_toolchain.gni")
import("//build_extra/flatbuffers/flatbuffer.gni")
import("//build_extra/flatbuffers/rust/rust_flatbuffer.gni")
import("//build_extra/deno.gni")
import("//build_extra/rust/rust.gni")

group("all") {
  testonly = true
  deps = [
    ":deno",
    ":deno_ns",
    ":test_cc",
    ":test_rs",
  ]
}

config("deno_config") {
  include_dirs = [ "third_party/v8" ]  # This allows us to v8/src/base/ libraries.
  configs = [ "third_party/v8:external_config" ]
  if (is_debug) {
    defines = [ "DEBUG" ]
  }

  # Targets built with the `rust_executable()` template automatically pick up
  # these dependencies, but those built with `executable()` need them when they
  # have Rust inputs. Currently, there's only one such target, `test_cc`.
  if (is_mac) {
    libs = [ "resolv" ]
  }
  if (is_win) {
    libs = [ "userenv.lib" ]
  }
}

main_extern = [
  "$rust_build:libc",
  "$rust_build:log",
  "$rust_build:sha1",
  "$rust_build:tempfile",
  "$rust_build:tokio",
  "$rust_build:url",
  "//build_extra/flatbuffers/rust:flatbuffers",
  ":msg_rs",

  # Indirect rust depdendencies also need to be listed here:
  # * Linking to `:handlers` or `:libdeno` isn't possible, because they
  #   already contain some symbols exported by `handlers.rs`. These duplicate
  #   symbols trip up the linker.
  # * The `rust_test` and `rust_executable` templates only produce an object
  #   file, and then invoke an external linker. Transitive rust depencenies
  #   are not resolved in either step.
  "$rust_build:arrayvec",
  "$rust_build:byteorder",
  "$rust_build:bytes",
  "$rust_build:crossbeam_deque",
  "$rust_build:crossbeam_epoch",
  "$rust_build:crossbeam_utils",
  "$rust_build:futures",
  "$rust_build:idna",
  "$rust_build:iovec",
  "$rust_build:kernel32",
  "$rust_build:lazy_static",
  "$rust_build:lazycell",
  "$rust_build:memoffset",
  "$rust_build:mio",
  "$rust_build:miow",
  "$rust_build:net2",
  "$rust_build:nodrop",
  "$rust_build:num_cpus",
  "$rust_build:percent_encoding",
  "$rust_build:rand",
  "$rust_build:rand_core",
  "$rust_build:remove_dir_all",
  "$rust_build:scopeguard",
  "$rust_build:slab",
  "$rust_build:tokio_executor",
  "$rust_build:tokio_fs",
  "$rust_build:tokio_io",
  "$rust_build:tokio_reactor",
  "$rust_build:tokio_tcp",
  "$rust_build:tokio_threadpool",
  "$rust_build:tokio_current_thread",
  "$rust_build:tokio_timer",
  "$rust_build:tokio_udp",
  "$rust_build:unicode_bidi",
  "$rust_build:unicode_normalization",
  "$rust_build:winapi",
  "$rust_build:ws2_32",
]

# Old version of the 'winapi' crate, required by 'mio', 'miow', and 'iovec'.
# This exceptional! Generally we don't allow multiple versions of a crate.
# TODO: Remove this dependency. https://github.com/denoland/deno/issues/484
main_extern_version = [
  {
    label = "$rust_build:winapi-0.2"
    crate_name = "winapi"
    crate_version = "0.2"
  },
]

rust_executable("deno") {
  source_root = "src/main.rs"
  extern = main_extern
  extern_version = main_extern_version
  deps = [
    ":libdeno",
  ]
}

# This target is for fast incremental development.
# When modifying the javascript runtime, this target will not go through the
# extra process of building a snapshot and instead load the bundle from disk.
# ns = no snapshot
rust_executable("deno_ns") {
  source_root = "src/main.rs"
  extern = main_extern
  extern_version = main_extern_version
  deps = [
    ":libdeno_nosnapshot",
  ]
}

rust_test("test_rs") {
  source_root = "src/main.rs"
  extern = main_extern
  extern_version = main_extern_version
  deps = [
    ":libdeno",
  ]
}

executable("test_cc") {
  testonly = true
  sources = [
    "src/flatbuffer_builder_test.cc",
    "src/test.cc",
  ]
  deps = [
    ":deno_base_test",
    ":deno_flatbuffer_builder",
    "//testing/gtest:gtest",
  ]
  configs += [ ":deno_config" ]
}

static_library("libdeno") {
  complete_static_lib = true
  sources = [
    "src/from_snapshot.cc",
  ]
  inputs = [
    "$target_gen_dir/snapshot_deno.bin",
  ]
  deps = [
    ":create_snapshot_deno",
    ":deno_bindings",
  ]
  configs += [ ":deno_config" ]
}

# Only functionality needed for libdeno_test and snapshot_creator
# In particular no flatbuffers, no assets, no rust, no msg handlers.
# Because snapshots are slow, it's important that snapshot_creator's
# dependencies are minimal.
v8_source_set("deno_base") {
  sources = [
    "src/binding.cc",
    "src/deno.h",
    "src/file_util.cc",
    "src/file_util.h",
    "src/internal.h",
  ]
  public_deps = [
    "third_party/v8:v8_monolith",
  ]
  configs = [ ":deno_config" ]
}

v8_source_set("deno_base_test") {
  testonly = true
  sources = [
    "src/file_util_test.cc",
    "src/from_snapshot.cc",
    "src/libdeno_test.cc",
  ]
  inputs = [
    "$target_gen_dir/snapshot_libdeno_test.bin",
  ]
  deps = [
    ":create_snapshot_libdeno_test",
    ":deno_base",
    "//testing/gtest:gtest",
  ]
  defines = [ "LIBDENO_TEST" ]
  configs = [ ":deno_config" ]
}

v8_source_set("deno_flatbuffer_builder") {
  sources = [
    "src/flatbuffer_builder.cc",
    "src/flatbuffer_builder.h",
  ]
  deps = [
    ":deno_base",
  ]
  public_deps = [
    "build_extra/flatbuffers:flatbuffers",
  ]
  configs = [ ":deno_config" ]
}

v8_source_set("deno_bindings") {
  sources = [
    "src/reply.cc",
    "src/reply.h",
  ]
  deps = [
    ":deno_base",
    ":deno_flatbuffer_builder",
    ":msg_cpp",
  ]
  configs = [ ":deno_config" ]
}

executable("snapshot_creator") {
  sources = [
    "src/snapshot_creator.cc",
  ]
  deps = [
    ":deno_base",
  ]
  configs += [ ":deno_config" ]
}

flatbuffer("msg_cpp") {
  sources = [
    "src/msg.fbs",
  ]
}

# Generates type declarations for files that need to be included
# in the runtime bundle
run_node("gen_declarations") {
  out_dir = target_gen_dir
  sources = [
    "js/console.ts",
    "js/deno.ts",
    "js/globals.ts",
    "js/os.ts",
    "js/timers.ts",
    "js/tsconfig.generated.json",
    "js/util.ts",
  ]
  outputs = [
    out_dir + "/js/console.d.ts",
    out_dir + "/js/deno.d.ts",
    out_dir + "/js/globals.d.ts",
    out_dir + "/js/os.d.ts",
    out_dir + "/js/timers.d.ts",
    out_dir + "/js/util.d.ts",
  ]
  deps = [
    ":msg_ts",
  ]
  args = [
    "./node_modules/typescript/bin/tsc",
    "-p",
    rebase_path("js/tsconfig.generated.json", root_build_dir),
    "--baseUrl",
    rebase_path(root_build_dir),
    "--outDir",
    rebase_path(out_dir),
  ]
}

run_node("bundle") {
  out_dir = "$target_gen_dir/bundle/"
  sources = [
    "js/assets.ts",
    "js/console.ts",
    "js/globals.ts",
    "js/lib.globals.d.ts",
    "js/main.ts",
    "js/os.ts",
    "js/plugins.d.ts",
    "js/runtime.ts",
    "js/text_encoding.ts",
    "js/timers.ts",
    "js/types.d.ts",
    "js/util.ts",
    "js/v8_source_maps.ts",
    "rollup.config.js",
    "src/msg.fbs",
    "tsconfig.json",
  ]
  outputs = [
    out_dir + "main.js",
    out_dir + "main.js.map",
  ]
  deps = [
    ":gen_declarations",
    ":msg_ts",
  ]
  args = [
    "./node_modules/rollup/bin/rollup",
    "-c",
    rebase_path("rollup.config.js", root_build_dir),
    "-i",
    rebase_path("js/main.ts", root_build_dir),
    "-o",
    rebase_path(out_dir + "main.js", root_build_dir),
    "--sourcemapFile",
    rebase_path("."),
    "--silent",
    "--environment",
    "BASEPATH:" + rebase_path(".", root_build_dir),
  ]
}

source_set("libdeno_nosnapshot") {
  bundle_outputs = get_target_outputs(":bundle")
  bundle_location = rebase_path(bundle_outputs[0])
  bundle_rel_location = rebase_path(bundle_outputs[0], root_build_dir)
  bundle_map_location = rebase_path(bundle_outputs[1])
  inputs = bundle_outputs
  sources = [
    "src/from_filesystem.cc",
  ]
  deps = [
    ":bundle",
    ":deno_bindings",
  ]
  configs += [ ":deno_config" ]
  defines = [
    "BUNDLE_LOCATION=\"$bundle_location\"",
    "BUNDLE_REL_LOCATION=\"$bundle_rel_location\"",
    "BUNDLE_MAP_LOCATION=\"$bundle_map_location\"",
  ]
}

ts_flatbuffer("msg_ts") {
  sources = [
    "src/msg.fbs",
  ]
}

rust_flatbuffer("msg_rs") {
  sources = [
    "src/msg.fbs",
  ]
}

# Generates $target_gen_dir/snapshot_deno.bin
create_snapshot("deno") {
  js = "$target_gen_dir/bundle/main.js"
  source_map = "$target_gen_dir/bundle/main.js.map"
  deps = [
    ":bundle",
  ]
}

# Generates $target_gen_dir/snapshot_libdeno_test.bin
create_snapshot("libdeno_test") {
  testonly = true
  js = "js/libdeno_test.js"
}