import 'dart:async' show Future;
import 'dart:convert' show json;
import 'package:flutter/services.dart' show rootBundle;

/// Loads secret/config files from Flutter assets as JSON.
/// Used to load configuration files at app startup.
class SecretLoader {
  final String secretPath;

  SecretLoader({required this.secretPath});

  /// Load and parse JSON from asset bundle.
  /// Returns a map of the parsed JSON content.
  Future<Map<String, dynamic>> load() {
    return rootBundle.loadStructuredData<Map<String, dynamic>>(
      secretPath,
      (jsonStr) async => json.decode(jsonStr) as Map<String, dynamic>,
    );
  }
}