import 'dart:ffi';
import 'dart:io';

import 'package:ffi/ffi.dart';

import 'generated_bindings.dart';

/// A very short-lived native function.
///
/// For very short-lived functions, it is fine to call them on the main isolate.
/// They will block the Dart execution while running the native function, so
/// only do this for native functions which are guaranteed to be short-lived.
void start(String path) => _bindings.Start(path.toNativeUtf8().cast());

const String _libName = 'libmtorrentserver';

/// The dynamic library in which the symbols for [NativeAddBindings] can be found.
final DynamicLibrary _dylib = () {
  if (Platform.isMacOS) {
    return DynamicLibrary.open('$_libName.framework/$_libName');
  }
  if (Platform.isLinux) {
    return DynamicLibrary.open('$_libName.so');
  }
  if (Platform.isWindows) {
    return DynamicLibrary.open('$_libName.dll');
  }
  throw UnsupportedError('Unknown platform: ${Platform.operatingSystem}');
}();

/// The bindings to the native functions in [_dylib].
final TorrentLibrary _bindings = TorrentLibrary(_dylib);