import 'dart:async';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../domain/entities/asset_display.dart';
import '../../domain/repositories/trading_repository.dart';
import '../../core/di/injection.dart';
import 'trading_providers.dart';

/// 我的资产显示 Provider (需要登录，使用 JWT token)
final myAssetProvider = FutureProvider<AssetDisplay?>((ref) async {
  final repository = ref.watch(tradingRepositoryProvider);
  final result = await repository.getMyAsset();

  ref.keepAlive();
  final timer = Timer(const Duration(minutes: 2), () {
    ref.invalidateSelf();
  });
  ref.onDispose(() => timer.cancel());

  return result.fold(
    (failure) => throw Exception(failure.message),
    (asset) => asset,
  );
});

/// 指定账户资产显示 Provider (public API)
final accountAssetProvider = FutureProvider.family<AssetDisplay?, String>(
  (ref, accountSequence) async {
    if (accountSequence.isEmpty) return null;

    final repository = ref.watch(tradingRepositoryProvider);
    final result = await repository.getAccountAsset(accountSequence);

    ref.keepAlive();
    final timer = Timer(const Duration(minutes: 2), () {
      ref.invalidateSelf();
    });
    ref.onDispose(() => timer.cancel());

    return result.fold(
      (failure) => throw Exception(failure.message),
      (asset) => asset,
    );
  },
);

/// 资产显示值计算器 - 用于实时显示资产估值
/// displayAssetValue = (账户积分股 + 账户积分股 × 倍数) × 积分股价
class AssetValueCalculator {
  final String shareBalance;
  final String burnMultiplier;
  final String currentPrice;

  AssetValueCalculator({
    required this.shareBalance,
    required this.burnMultiplier,
    required this.currentPrice,
  });

  /// 计算有效积分股 = 余额 × (1 + 倍数)
  double get effectiveShares {
    final balance = double.tryParse(shareBalance) ?? 0;
    final multiplier = double.tryParse(burnMultiplier) ?? 0;
    return balance * (1 + multiplier);
  }

  /// 计算资产显示值 = 有效积分股 × 价格
  double get displayValue {
    final price = double.tryParse(currentPrice) ?? 0;
    return effectiveShares * price;
  }

  /// 计算每秒增长值
  static double calculateGrowthPerSecond(String dailyAllocation) {
    final daily = double.tryParse(dailyAllocation) ?? 0;
    return daily / 24 / 60 / 60;
  }
}