import 'package:brick_generator/models/brick_variable.dart';
import 'package:yaml/yaml.dart';

const _brickNameKey = 'brick_name';
const _pathToBrickifyKey = 'path_to_brickify';
const _variablesKey = 'variables';

class BrickConfig {
  String? brickName;
  String? pathToBrickify;
  List<BrickVariable?>? variables;

  BrickConfig({
    required this.brickName,
    required this.pathToBrickify,
    required this.variables,
  });

  BrickConfig._();
  factory BrickConfig.parser() => BrickConfig._();

  static BrickConfig? from(YamlMap? data) => data != null
      ? BrickConfig(
          brickName: data[_brickNameKey] as String?,
          pathToBrickify: data[_pathToBrickifyKey] as String?,
          variables: (data[_variablesKey] as YamlMap?)
              ?.map<dynamic, BrickVariable?>(
                (dynamic key, dynamic value) =>
                    MapEntry<dynamic, BrickVariable?>(
                  key,
                  BrickVariable.from(value as YamlMap?),
                ),
              )
              .values
              .toList(),
        )
      : null;

  void checkFormat() {
    if (brickName == null || pathToBrickify == null) {
      throw ArgumentError(
        'Yaml file is not conform',
      );
    }
    if (variables != null) {
      for (final variable in variables!) {
        variable?.checkFormat();
      }
    }
  }
}