import 'dart:convert';
import 'dart:io';

Future<void> main() async {
  final root = Directory.current;
  final configFile = File('${root.path}/.dart_tool/package_config.json');
  final config = jsonDecode(await configFile.readAsString()) as Map;
  final package = (config['packages'] as List).cast<Map>().singleWhere(
    (entry) => entry['name'] == 'fjs',
  );
  final packageRoot = configFile.uri
      .resolve(package['rootUri'] as String)
      .toFilePath();
  final output = Directory('${root.path}/build/native-tests/fjs');
  await output.create(recursive: true);
  await File(
    '${output.path}/cargokit_options.yaml',
  ).writeAsString('precompiled_binaries_mode: disabled\n');
  final flutterRoot =
      Platform.environment['FLUTTER_ROOT'] ??
      File(Platform.resolvedExecutable).parent.parent.parent.parent.parent.path;
  if (Platform.isMacOS) {
    final process = await Process.start('cargo', [
      'build',
      '--locked',
      '--manifest-path',
      '$packageRoot/libfjs/Cargo.toml',
      '--target-dir',
      '${output.path}/temp',
    ], mode: ProcessStartMode.inheritStdio);
    exitCode = await process.exitCode;
    if (exitCode != 0) return;
    await File(
      '${output.path}/temp/debug/libfjs.dylib',
    ).copy('${output.path}/libfjs.dylib');
    return;
  }
  final target = Platform.isWindows
      ? 'windows-x64'
      : Platform.isLinux
      ? 'linux-x64'
      : throw UnsupportedError('Unsupported test host');
  final script =
      '$packageRoot/cargokit/run_build_tool.${Platform.isWindows ? 'cmd' : 'sh'}';
  final process = await Process.start(
    script,
    ['build-cmake'],
    runInShell: Platform.isWindows,
    mode: ProcessStartMode.inheritStdio,
    environment: {
      'FLUTTER_ROOT': flutterRoot,
      'CARGOKIT_CONFIGURATION': 'Release',
      'CARGOKIT_MANIFEST_DIR': '$packageRoot/libfjs',
      'CARGOKIT_TARGET_TEMP_DIR': '${output.path}/temp',
      'CARGOKIT_OUTPUT_DIR': output.path,
      'CARGOKIT_TARGET_PLATFORM': target,
      'CARGOKIT_TOOL_TEMP_DIR': '${output.path}/tool',
      'CARGOKIT_ROOT_PROJECT_DIR': output.path,
    },
  );
  exitCode = await process.exitCode;
  final library = File(
    '${output.path}/${Platform.isWindows ? 'fjs.dll' : 'libfjs.so'}',
  );
  if (!library.existsSync()) {
    stderr.writeln(
      'Native plugin library was not produced. Check Rust and libclang installation.',
    );
    exitCode = 1;
  }
}