# Copyright 2020 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/components.gni")
import("//build/rust/rustc_library.gni")
import("//build/rust/rustc_wasm_library.gni")

import("//src/diagnostics/wasm/wasm_bindings.gni")

group("example") {
  deps = [
    ":lib",
    ":lib($unknown_wasm32_toolchain)",
  ]
}

group("tests") {
  testonly = true
  deps = [
    ":test_wasm_exists",
    ":wasm-example-unittests",
  ]
}

# We need to specify configs
config("env") {
  rustenv = [
    "CARGO_PKG_NAME=example_lib",
    "CARGO_PKG_VERSION=0.1",
    "CARGO_MANIFEST_DIR=/",
  ]
}

lib_sources = [ "src/lib.rs" ]

if (current_toolchain == unknown_wasm32_toolchain) {
  rustc_wasm_library("lib") {
    output_name = "example_lib"
    edition = "2021"

    configs += [ ":env" ]

    deps = [ "//third_party/rust_crates:wasm-bindgen" ]

    sources = lib_sources
  }
} else {
  rustc_library("lib") {
    edition = "2021"

    configs += [ ":env" ]

    sources = lib_sources
  }
}

rustc_test("example_lib_tests") {
  edition = "2021"

  sources = lib_sources

  deps = [ "//src/lib/fuchsia" ]
}

fuchsia_unittest_package("wasm-example-unittests") {
  deps = [ ":example_lib_tests" ]
}

wasm_bindings("lib_wasm") {
  target = ":lib"
  target_output_name = "example_lib"
}

copy("test_wasm_exists") {
  dep_path = get_label_info(":lib($unknown_wasm32_toolchain)", "root_out_dir")
  sources = [ "${dep_path}/libexample_lib.wasm" ]
  outputs = [ "${root_out_dir}/test_wasm_exists_libexample_lib.wasm" ]

  deps = [ ":lib($unknown_wasm32_toolchain)" ]
}