import 'dart:io';

import 'Stream.dart';
import 'Tag.dart';
import 'impl/CompoundTag.dart';

class SnbtIo {
  static Future<void> writeToFile(String file, CompoundTag tag) async {
    File handle = File(file);

    if (handle.existsSync())
      handle.deleteSync(); // Ensure we flush the file to 0 bytes

    StringBuilder builder = StringBuilder();
    Tag.writeStringifiedNamedTag(tag, builder, 0);
    await handle.writeAsString(builder.toString());
  }

  static Future<Tag> readFromFile(String file) async {
    File fi = File(file);
    String data = await fi.readAsString();
    StringReader reader = StringReader(data);

    Tag tag = CompoundTag();
    try {
      tag = Tag.readStringifiedNamedTag(reader);
    } catch (E, stack) {
      print("FATAL ERROR OCCURED AT LOCATION:\n${reader.getSnapshot()}");
      print(E);
      print(stack);
    }
    return tag;
  }

  static String writeToString(CompoundTag tag) {
    StringBuilder builder = StringBuilder();
    Tag.writeStringifiedNamedTag(tag, builder, 0);
    return builder.toString();
  }

  static Future<Tag> readFromString(String data) async {
    return Tag.readStringifiedNamedTag(StringReader(data));
  }
}