import 'dart:ffi' as ffi;

import 'package:ffi/ffi.dart';
import 'package:open_filex/src/common/parse_args.dart';

typedef SystemC = ffi.Int32 Function(ffi.Pointer<Utf8> command);

typedef SystemDart = int Function(ffi.Pointer<Utf8> command);

/// run the [command]s on system
int system(List<String> command) {
  // Load `stdlib`. On Linux this is in libc.so.6.
  final dylib = ffi.DynamicLibrary.open('libc.so.6');

  // Look up the `system` function.
  final systemP = dylib.lookupFunction<SystemC, SystemDart>('system');

  // Allocate a pointer to a Utf8 array containing our command.
  final cmdP = parseArgs(command).toNativeUtf8();

  // Invoke the command, and free the pointer.
  final result = systemP(cmdP);
  calloc.free(cmdP);

  return result;
}