import 'dart:ffi';
import 'dart:io';
import "package:ffi/ffi.dart";
import "package:path/path.dart" show dirname, join;
import 'dart:io' show Platform;

const String _libName = 'libdart_openmvg';
final HERE = File(String.fromEnvironment("CURRENT_EXEC_DIR",
    defaultValue: (File(Platform.script.path).parent.absolute.path)));
final BUILD_DIR = File(join(HERE.path, "build"));

DynamicLibrary getArchimedesCLib() {
  if (Platform.isMacOS || Platform.isIOS) {
    return DynamicLibrary.open(
        join(BUILD_DIR.path, '$_libName.framework', _libName));
  }
  if (Platform.isAndroid || Platform.isLinux) {
    return DynamicLibrary.open(join(BUILD_DIR.path, 'lib$_libName.so'));
  }
  if (Platform.isWindows) {
    return DynamicLibrary.open(join(BUILD_DIR.path, '$_libName.dll'));
  }
  throw UnsupportedError('Unknown platform: ${Platform.operatingSystem}');
}