import '../core/network/api_client.dart';
import '../core/network/endpoints.dart';

/// 资产钱包（《03-接口文档》9.3，10 资产 = 1 元）
class AssetWallet {
  const AssetWallet({
    this.assets = 0,
    this.assetsValueYuan = 0,
    this.totalEarned = 0,
    this.totalWithdrawn = 0,
    this.minWithdrawAssets = 100,
    this.hasPendingWithdraw = false,
  });

  /// 资产余额
  final double assets;

  /// 折合人民币（元）
  final double assetsValueYuan;
  final double totalEarned;
  final double totalWithdrawn;

  /// 最低提现资产
  final int minWithdrawAssets;

  /// 是否有审核中的提现申请
  final bool hasPendingWithdraw;

  factory AssetWallet.fromJson(Map<String, dynamic> json) => AssetWallet(
        assets: (json['assets'] as num?)?.toDouble() ?? 0,
        assetsValueYuan: (json['assets_value_yuan'] as num?)?.toDouble() ?? 0,
        totalEarned: (json['total_earned'] as num?)?.toDouble() ?? 0,
        totalWithdrawn: (json['total_withdrawn'] as num?)?.toDouble() ?? 0,
        minWithdrawAssets:
            (json['min_withdraw_assets'] as num?)?.toInt() ?? 100,
        hasPendingWithdraw: json['has_pending_withdraw'] as bool? ?? false,
      );
}

/// 资产流水（《03-接口文档》9.4）
class AssetRecord {
  const AssetRecord({
    required this.id,
    required this.changeAmount,
    required this.balanceAfter,
    required this.bizType,
    this.remark = '',
    this.createdAt = '',
  });

  final int id;

  /// 正=收入，负=支出
  final double changeAmount;
  final double balanceAfter;

  /// 1充值返利 2完整观看收益 3点赞收益 4提现 5提现退回 6返利扣回 7后台调整
  final int bizType;
  final String remark;
  final String createdAt;

  static const Map<int, String> bizTypeLabels = {
    1: '充值返利',
    2: '观看收益',
    3: '点赞收益',
    4: '提现',
    5: '提现退回',
    6: '返利扣回',
    7: '后台调整',
  };

  String get bizTypeLabel => bizTypeLabels[bizType] ?? '其他';
  bool get isExpense => changeAmount < 0;

  factory AssetRecord.fromJson(Map<String, dynamic> json) => AssetRecord(
        id: (json['id'] as num).toInt(),
        changeAmount: (json['change_amount'] as num?)?.toDouble() ?? 0,
        balanceAfter: (json['balance_after'] as num?)?.toDouble() ?? 0,
        bizType: (json['biz_type'] as num?)?.toInt() ?? 0,
        remark: (json['remark'] as String?) ?? '',
        createdAt: (json['created_at'] as String?) ?? '',
      );
}

/// 资产流水分页
class AssetRecordsPage {
  const AssetRecordsPage({required this.total, required this.items});

  final int total;
  final List<AssetRecord> items;

  factory AssetRecordsPage.fromJson(Map<String, dynamic> json) =>
      AssetRecordsPage(
        total: (json['total'] as num?)?.toInt() ?? 0,
        items: ((json['list'] as List?) ?? const [])
            .whereType<Map<String, dynamic>>()
            .map(AssetRecord.fromJson)
            .toList(),
      );
}

/// 提现申请结果（《03-接口文档》9.5）
class WithdrawResult {
  const WithdrawResult({
    required this.withdrawNo,
    required this.assets,
    required this.amountYuan,
    required this.status,
    this.statusText = '',
  });

  final String withdrawNo;
  final double assets;
  final double amountYuan;
  final int status;
  final String statusText;

  factory WithdrawResult.fromJson(Map<String, dynamic> json) =>
      WithdrawResult(
        withdrawNo: (json['withdraw_no'] as String?) ?? '',
        assets: (json['assets'] as num?)?.toDouble() ?? 0,
        amountYuan: (json['amount_yuan'] as num?)?.toDouble() ?? 0,
        status: (json['status'] as num?)?.toInt() ?? 0,
        statusText: (json['status_text'] as String?) ?? '',
      );
}

/// 提现记录（《03-接口文档》9.6）
class WithdrawRecord {
  const WithdrawRecord({
    required this.withdrawNo,
    required this.assets,
    required this.amountYuan,
    required this.channel,
    required this.status,
    this.statusText = '',
    this.createdAt = '',
  });

  final String withdrawNo;
  final double assets;
  final double amountYuan;

  /// 1支付宝 2微信 3USDT
  final int channel;

  /// 0待审核 1已打款 2已拒绝
  final int status;
  final String statusText;
  final String createdAt;

  static const Map<int, String> channelLabels = {
    1: '支付宝',
    2: '微信',
    3: 'USDT',
  };

  String get channelLabel => channelLabels[channel] ?? '未知';

  factory WithdrawRecord.fromJson(Map<String, dynamic> json) =>
      WithdrawRecord(
        withdrawNo: (json['withdraw_no'] as String?) ?? '',
        assets: (json['assets'] as num?)?.toDouble() ?? 0,
        amountYuan: (json['amount_yuan'] as num?)?.toDouble() ?? 0,
        channel: (json['channel'] as num?)?.toInt() ?? 1,
        status: (json['status'] as num?)?.toInt() ?? 0,
        statusText: (json['status_text'] as String?) ?? '',
        createdAt: (json['created_at'] as String?) ?? '',
      );
}

/// 提现记录分页
class WithdrawRecordsPage {
  const WithdrawRecordsPage({required this.total, required this.items});

  final int total;
  final List<WithdrawRecord> items;

  factory WithdrawRecordsPage.fromJson(Map<String, dynamic> json) =>
      WithdrawRecordsPage(
        total: (json['total'] as num?)?.toInt() ?? 0,
        items: ((json['list'] as List?) ?? const [])
            .whereType<Map<String, dynamic>>()
            .map(WithdrawRecord.fromJson)
            .toList(),
      );
}

/// 资产/提现服务（《03-接口文档》第 9 章，均需登录）
class AssetService {
  AssetService._();

  /// 9.3 我的资产
  static Future<AssetWallet> fetchAssets() async {
    final data =
        await ApiClient.get<Map<String, dynamic>>(Endpoints.assetsMe);
    return AssetWallet.fromJson(data);
  }

  /// 9.4 资产流水（biz_type 筛选 + 分页）
  static Future<AssetRecordsPage> fetchRecords({
    int page = 1,
    int pageSize = 20,
    int? bizType,
  }) async {
    final query = <String, dynamic>{'page': page, 'page_size': pageSize};
    if (bizType != null) query['biz_type'] = bizType;
    final data = await ApiClient.get<Map<String, dynamic>>(
      Endpoints.assetsRecords,
      queryParameters: query,
    );
    return AssetRecordsPage.fromJson(data);
  }

  /// 9.5 申请提现
  /// 错误码：2102 资产余额不足，2103 低于最低提现额度，2104 已有审核中的提现申请
  static Future<WithdrawResult> applyWithdraw({
    required double assets,
    required int channel,
    required String account,
  }) async {
    final data = await ApiClient.post<Map<String, dynamic>>(
      Endpoints.assetsWithdraw,
      data: {'assets': assets, 'channel': channel, 'account': account},
    );
    return WithdrawResult.fromJson(data);
  }

  /// 9.6 提现记录
  static Future<WithdrawRecordsPage> fetchWithdrawRecords({
    int page = 1,
    int pageSize = 20,
  }) async {
    final data = await ApiClient.get<Map<String, dynamic>>(
      Endpoints.withdrawRecords,
      queryParameters: {'page': page, 'page_size': pageSize},
    );
    return WithdrawRecordsPage.fromJson(data);
  }
}