package e2e

import (
	"context"
	"database/sql"
	"fmt"
	"os"
	"path/filepath"
	"regexp"
	"runtime"
	"strings"
	"testing"
	"time"

	mysqldriver "github.com/go-sql-driver/mysql"
	"gorm.io/driver/mysql"
	"gorm.io/gorm"
	"gorm.io/gorm/logger"

	"hfb_sys/backend/internal/auditlog"
	"hfb_sys/backend/internal/model"
	"hfb_sys/backend/internal/modules/adminfinance"
	"hfb_sys/backend/internal/modules/dispute"
	"hfb_sys/backend/internal/modules/listing"
	"hfb_sys/backend/internal/modules/order"
	"hfb_sys/backend/internal/modules/payment"
	"hfb_sys/backend/internal/modules/paymentaccount"
	"hfb_sys/backend/internal/modules/paymentconfig"
	"hfb_sys/backend/internal/modules/wallet"
	"hfb_sys/backend/internal/modules/withdrawal"
	"hfb_sys/backend/pkg/crypto"
)

func TestRentalFullFlowWithMockPayment(t *testing.T) {
	db := openE2EDB(t)

	owner, renter, adminID := seedUsers(t, db)
	services := newFlowServices(db)
	seedMockPaymentConfig(t, services.paymentConfig, adminID)

	account := createOwnerPaymentAccount(t, services.paymentAccount, owner.ID)
	listingDTO := createListingUnderReview(t, services.listing, owner.ID)
	adjusted := adjustAndApproveListing(t, services.listing, adminID, listingDTO.ID)
	if adjusted.PriceCent != 38300 {
		t.Fatalf("调价后商品价格 = %d, want 38300", adjusted.PriceCent)
	}

	orderDTO := mustCreateOrder(t, services.order, renter.ID, adjusted.ID)
	paymentDTO, err := services.payment.Start(t.Context(), renter.ID, orderDTO.ID, payment.StartPaymentRequest{}, "127.0.0.1")
	if err != nil {
		t.Fatalf("启动 mock 支付失败: %v", err)
	}
	assertEqual(t, "支付状态", paymentDTO.Status, "paid")
	assertEqual(t, "支付金额", paymentDTO.AmountCent, int64(53300))

	paidOrder, err := services.order.FindAdmin(t.Context(), orderDTO.ID)
	if err != nil {
		t.Fatalf("读取已支付订单失败: %v", err)
	}
	assertEqual(t, "支付后订单状态", paidOrder.Status, "pending_handoff")
	assertEqual(t, "支付后交接状态", paidOrder.HandoffStatus, "pending_owner")

	if _, err := services.order.SubmitHandoff(t.Context(), owner.ID, orderDTO.ID, order.SubmitHandoffRequest{Content: "账号：demo，密码：demo-pass"}); err != nil {
		t.Fatalf("号主交接失败: %v", err)
	}
	if err := services.order.ConfirmReceive(t.Context(), renter.ID, orderDTO.ID); err != nil {
		t.Fatalf("租客确认收号失败: %v", err)
	}

	if _, err := services.order.SubmitCheckout(t.Context(), renter.ID, orderDTO.ID, order.SubmitCheckoutRequest{
		Content:              "租客发起结账",
		ConsumableAmountCent: 700,
		CoinConsumedM:        90,
	}); err != nil {
		t.Fatalf("租客发起结账失败: %v", err)
	}
	countered, err := services.order.CounterCheckout(t.Context(), owner.ID, orderDTO.ID, order.CounterCheckoutRequest{
		ConsumableAmountCent:    1200,
		CoinConsumedM:           100,
		DepositDeductAmountCent: 3000,
		Reason:                  "补扣消耗和押金赔付",
	})
	if err != nil {
		t.Fatalf("号主反价失败: %v", err)
	}
	assertEqual(t, "反价状态", countered.Status, "countered")
	if err := services.order.AcceptCheckout(t.Context(), renter.ID, orderDTO.ID); err != nil {
		t.Fatalf("租客接受反价失败: %v", err)
	}

	completed, err := services.order.FindAdmin(t.Context(), orderDTO.ID)
	if err != nil {
		t.Fatalf("读取完成订单失败: %v", err)
	}
	assertEqual(t, "完成后订单状态", completed.Status, "completed")
	assertEqual(t, "完成后结算状态", completed.SettlementStatus, "settled")
	if completed.Checkout == nil {
		t.Fatal("完成订单缺少结账记录")
	}
	assertEqual(t, "结账状态", completed.Checkout.Status, "accepted")
	assertEqual(t, "实际结账租金", *completed.Checkout.RentAmountCent, int64(27500))
	assertEqual(t, "号主结算收入", *completed.Checkout.OwnerIncomeAmountCent, int64(27500))
	assertEqual(t, "平台收入", *completed.Checkout.PlatformFeeCent, int64(3000))

	assertFinanceDashboard(t, services.finance, orderDTO.OrderNo)
	assertWalletAndWithdrawal(t, services.wallet, services.withdrawal, owner.ID, adminID, account.ID)
}

func TestArbitrationReleaseDepositDoesNotRepublishListing(t *testing.T) {
	db := openE2EDB(t)

	owner, renter, adminID := seedUsers(t, db)
	services := newFlowServices(db)
	seedMockPaymentConfig(t, services.paymentConfig, adminID)

	listingDTO := createListingUnderReview(t, services.listing, owner.ID)
	approved := adjustAndApproveListing(t, services.listing, adminID, listingDTO.ID)
	orderDTO := mustCreateOrder(t, services.order, renter.ID, approved.ID)
	if _, err := services.payment.Start(t.Context(), renter.ID, orderDTO.ID, payment.StartPaymentRequest{}, "127.0.0.1"); err != nil {
		t.Fatalf("启动 mock 支付失败: %v", err)
	}
	if _, err := services.order.SubmitHandoff(t.Context(), owner.ID, orderDTO.ID, order.SubmitHandoffRequest{Content: "账号：demo，密码：demo-pass"}); err != nil {
		t.Fatalf("号主交接失败: %v", err)
	}
	if err := services.order.ConfirmReceive(t.Context(), renter.ID, orderDTO.ID); err != nil {
		t.Fatalf("租客确认收号失败: %v", err)
	}
	if _, err := services.order.SubmitCheckout(t.Context(), renter.ID, orderDTO.ID, order.SubmitCheckoutRequest{
		Content:              "租客发起结账",
		ConsumableAmountCent: 700,
		CoinConsumedM:        90,
	}); err != nil {
		t.Fatalf("租客发起结账失败: %v", err)
	}
	if _, err := services.order.CounterCheckout(t.Context(), owner.ID, orderDTO.ID, order.CounterCheckoutRequest{
		ConsumableAmountCent:    1200,
		CoinConsumedM:           100,
		DepositDeductAmountCent: 3000,
		Reason:                  "补扣消耗和押金赔付",
	}); err != nil {
		t.Fatalf("号主反价失败: %v", err)
	}

	disputeDTO, err := services.dispute.Create(t.Context(), renter.ID, orderDTO.ID, dispute.CreateRequest{
		Type:        "checkout_amount",
		Description: "不同意扣押金，申请客服仲裁",
	})
	if err != nil {
		t.Fatalf("创建结账争议失败: %v", err)
	}
	assertEqual(t, "争议类型", disputeDTO.Type, "checkout_dispute")
	resolved, err := services.dispute.Arbitrate(t.Context(), adminID, disputeDTO.ID, dispute.ArbitrateRequest{
		Result: "release_deposit",
		Remark: "确认无押金扣除，退回押金",
	}, auditlog.Meta{IP: "127.0.0.1", RequestID: "e2e-arbitrate"})
	if err != nil {
		t.Fatalf("仲裁失败: %v", err)
	}
	assertEqual(t, "争议状态", resolved.Status, "resolved")

	completed, err := services.order.FindAdmin(t.Context(), orderDTO.ID)
	if err != nil {
		t.Fatalf("读取仲裁后订单失败: %v", err)
	}
	assertEqual(t, "仲裁后订单状态", completed.Status, "completed")
	assertEqual(t, "仲裁后结算状态", completed.SettlementStatus, "arbitrated")

	var orderRow model.RentalOrder
	if err := db.First(&orderRow, orderDTO.ID).Error; err != nil {
		t.Fatalf("读取仲裁后订单模型失败: %v", err)
	}
	assertEqual(t, "仲裁退款状态", orderRow.RefundStatus, "refunded")
	assertEqual(t, "仲裁退款金额", orderRow.RefundAmountCent, int64(15000))

	walletAccount, err := services.wallet.Account(t.Context(), owner.ID)
	if err != nil {
		t.Fatalf("读取号主钱包失败: %v", err)
	}
	assertEqual(t, "仲裁后号主可用余额", walletAccount.AvailableBalanceCent, int64(35300))

	var listingRow model.RentalListing
	if err := db.First(&listingRow, approved.ID).Error; err != nil {
		t.Fatalf("读取仲裁后商品失败: %v", err)
	}
	var accountRow model.GameAccount
	if err := db.First(&accountRow, approved.AccountID).Error; err != nil {
		t.Fatalf("读取仲裁后账号失败: %v", err)
	}
	assertEqual(t, "仲裁后商品状态", listingRow.Status, "offline")
	assertEqual(t, "仲裁后账号状态", accountRow.Status, "offline")
}

type flowServices struct {
	listing        *listing.Service
	order          *order.Service
	payment        *payment.Service
	paymentConfig  *paymentconfig.Service
	paymentAccount *paymentaccount.Service
	dispute        *dispute.Service
	wallet         *wallet.Service
	withdrawal     *withdrawal.Service
	finance        *adminfinance.Service
}

func newFlowServices(db *gorm.DB) flowServices {
	listingRepo := listing.NewRepository(db, nil)
	walletRepo := wallet.NewRepository(db)
	configRepo := paymentconfig.NewRepository(db, &paymentconfig.MockEncryptor{})
	var paymentRepo *payment.Repository
	orderRepo := order.NewRepository(db, order.Dependencies{
		RefundStarter: order.RefundStarterFunc(func(ctx context.Context, orderID uint64, refundAmountCent int64, bizType string, remark string) (string, error) {
			refund, err := paymentRepo.StartRefund(ctx, orderID, refundAmountCent, bizType, remark)
			if err != nil {
				return "", err
			}
			return refund.Status, nil
		}),
	})
	paymentRepo = payment.NewRepository(db, configRepo, orderRepo)
	disputeRepo := dispute.NewRepository(db, dispute.Dependencies{
		RefundStarter: dispute.RefundStarterFunc(func(ctx context.Context, orderID uint64, refundAmountCent int64, bizType string, remark string) (string, error) {
			refund, err := paymentRepo.StartRefund(ctx, orderID, refundAmountCent, bizType, remark)
			if err != nil {
				return "", err
			}
			return refund.Status, nil
		}),
	})

	return flowServices{
		listing:        listing.NewService(listingRepo, fixedConfig{"listing.review_required": "true"}),
		order:          order.NewService(orderRepo),
		payment:        payment.NewService(paymentRepo),
		paymentConfig:  paymentconfig.NewService(configRepo),
		paymentAccount: paymentaccount.NewService(paymentaccount.NewRepository(db, &crypto.MockEncryptor{})),
		dispute:        dispute.NewService(disputeRepo),
		wallet:         wallet.NewService(walletRepo),
		withdrawal:     withdrawal.NewService(withdrawal.NewRepository(db, walletRepo, &crypto.MockEncryptor{})),
		finance:        adminfinance.NewService(adminfinance.NewRepository(db)),
	}
}

type fixedConfig map[string]string

func (c fixedConfig) FindValue(ctx context.Context, key string) (string, error) {
	return c[key], nil
}

func openE2EDB(t *testing.T) *gorm.DB {
	t.Helper()

	rawDSN := os.Getenv("HFB_E2E_DSN")
	if rawDSN == "" {
		t.Skip("设置 HFB_E2E_DSN 后运行完整租号链路 e2e 测试")
	}
	cfg, err := mysqldriver.ParseDSN(rawDSN)
	if err != nil {
		t.Fatalf("解析 HFB_E2E_DSN 失败: %v", err)
	}
	dbName := cfg.DBName
	assertSafeTestDBName(t, dbName)

	serverCfg := cfg.Clone()
	serverCfg.DBName = ""
	serverDB, err := sql.Open("mysql", serverCfg.FormatDSN())
	if err != nil {
		t.Fatalf("连接 MySQL server 失败: %v", err)
	}
	defer serverDB.Close()
	if _, err := serverDB.Exec("DROP DATABASE IF EXISTS `" + dbName + "`"); err != nil {
		t.Fatalf("删除测试库失败: %v", err)
	}
	if _, err := serverDB.Exec("CREATE DATABASE `" + dbName + "` CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci"); err != nil {
		t.Fatalf("创建测试库失败: %v", err)
	}

	cfg.ParseTime = true
	cfg.MultiStatements = true
	sqlDB, err := sql.Open("mysql", cfg.FormatDSN())
	if err != nil {
		t.Fatalf("连接测试库失败: %v", err)
	}
	t.Cleanup(func() { _ = sqlDB.Close() })
	applyMigrations(t, sqlDB)

	gormDB, err := gorm.Open(mysql.New(mysql.Config{Conn: sqlDB}), &gorm.Config{
		Logger: logger.Default.LogMode(logger.Silent),
	})
	if err != nil {
		t.Fatalf("打开 gorm 连接失败: %v", err)
	}
	return gormDB
}

func assertSafeTestDBName(t *testing.T, dbName string) {
	t.Helper()
	if dbName == "" {
		t.Fatal("HFB_E2E_DSN 必须包含数据库名")
	}
	if !regexp.MustCompile(`^[A-Za-z0-9_]+$`).MatchString(dbName) {
		t.Fatalf("测试库名只允许字母、数字、下划线: %q", dbName)
	}
	lower := strings.ToLower(dbName)
	if !strings.Contains(lower, "test") && !strings.Contains(lower, "e2e") {
		t.Fatalf("拒绝重置非测试库 %q，库名需包含 test 或 e2e", dbName)
	}
}

func applyMigrations(t *testing.T, db *sql.DB) {
	t.Helper()
	_, currentFile, _, ok := runtime.Caller(0)
	if !ok {
		t.Fatal("无法定位当前测试文件")
	}
	migrationDir := filepath.Join(filepath.Dir(currentFile), "..", "..", "migrations")
	entries, err := os.ReadDir(migrationDir)
	if err != nil {
		t.Fatalf("读取迁移目录失败: %v", err)
	}
	for _, entry := range entries {
		if entry.IsDir() || !strings.HasSuffix(entry.Name(), ".sql") {
			continue
		}
		name := entry.Name()
		migrationPath := filepath.Join(migrationDir, name)
		raw, err := os.ReadFile(migrationPath)
		if err != nil {
			t.Fatalf("读取迁移 %s 失败: %v", name, err)
		}
		sqlText := gooseUpSQL(string(raw))
		if _, err := db.Exec(sqlText); err != nil {
			t.Fatalf("执行迁移 %s 失败: %v", name, err)
		}
	}
}

func gooseUpSQL(raw string) string {
	upIndex := strings.Index(raw, "-- +goose Up")
	if upIndex >= 0 {
		raw = raw[upIndex+len("-- +goose Up"):]
	}
	downIndex := strings.Index(raw, "-- +goose Down")
	if downIndex >= 0 {
		raw = raw[:downIndex]
	}
	return raw
}

func seedUsers(t *testing.T, db *gorm.DB) (model.User, model.User, uint64) {
	t.Helper()
	now := time.Now()
	ownerName, renterName := "张三", "李四"
	owner := model.User{Phone: "13900000001", Nickname: "测试号主", RealnameStatus: "verified", RiskStatus: "normal", CreditScore: 100, Status: "active"}
	renter := model.User{Phone: "13900000002", Nickname: "测试租客", RealnameStatus: "verified", RiskStatus: "normal", CreditScore: 100, Status: "active"}
	if err := db.Create(&owner).Error; err != nil {
		t.Fatalf("创建号主失败: %v", err)
	}
	if err := db.Create(&renter).Error; err != nil {
		t.Fatalf("创建租客失败: %v", err)
	}
	seedRealname(t, db, owner.ID, ownerName, now)
	seedRealname(t, db, renter.ID, renterName, now)

	admin := model.AdminUser{Username: "e2e_admin", PasswordHash: "noop", Nickname: "测试管理员", Status: "active"}
	if err := db.Create(&admin).Error; err != nil {
		t.Fatalf("创建管理员失败: %v", err)
	}
	return owner, renter, admin.ID
}

func seedRealname(t *testing.T, db *gorm.DB, userID uint64, name string, verifiedAt time.Time) {
	t.Helper()
	encryptedName, err := (&crypto.MockEncryptor{}).Encrypt(name)
	if err != nil {
		t.Fatalf("加密实名姓名失败: %v", err)
	}
	row := model.UserRealname{
		UserID:          userID,
		Provider:        "e2e",
		ProviderOrderNo: fmt.Sprintf("RN%d", userID),
		Status:          "verified",
		MaskedName:      string([]rune(name)[0]) + "*",
		EncryptedName:   encryptedName,
		MaskedIDNo:      "110***********001",
		VerifiedAt:      &verifiedAt,
	}
	if err := db.Create(&row).Error; err != nil {
		t.Fatalf("创建实名记录失败: %v", err)
	}
}

func seedMockPaymentConfig(t *testing.T, service *paymentconfig.Service, adminID uint64) {
	t.Helper()
	_, err := service.Create(t.Context(), paymentconfig.CreateRequest{
		Name:         "E2E Mock 支付",
		Provider:     "mock",
		MerchantID:   "mock-e2e",
		IsDefault:    true,
		Status:       "active",
		Environment:  "sandbox",
		BusinessTags: []string{"order_pay", "wallet_recharge"},
	}, adminID, auditlog.Meta{IP: "127.0.0.1", RequestID: "e2e-payment-config"})
	if err != nil {
		t.Fatalf("创建 mock 支付配置失败: %v", err)
	}
}

func createOwnerPaymentAccount(t *testing.T, service *paymentaccount.Service, ownerID uint64) *paymentaccount.PaymentAccountDTO {
	t.Helper()
	account, err := service.Create(t.Context(), ownerID, paymentaccount.CreatePaymentAccountRequest{
		AccountType: "alipay",
		AccountName: "张三",
		AccountNo:   "owner@example.com",
	})
	if err != nil {
		t.Fatalf("创建号主收款账号失败: %v", err)
	}
	return account
}

func createListingUnderReview(t *testing.T, service *listing.Service, ownerID uint64) *listing.ListingDTO {
	t.Helper()
	dto, err := service.Create(t.Context(), ownerID, listing.CreateRequest{
		Title:             "E2E 烽火地带账号",
		Description:       "用于完整链路测试",
		ServerRegion:      "烽火地带",
		LoginPlatform:     "QQ",
		RankLevel:         "钻石",
		HafCoinAmount:     100000000,
		PriceCent:         35300,
		DepositAmountCent: 15000,
		ScreenshotURLS:    []string{"https://example.com/e2e-account.png"},
		AssetSummary: map[string]any{
			"fire_level": 50,
			"price_breakdown": map[string]any{
				"seller_coin_base_price": 233,
				"seller_total_price":     353,
				"seller_ratio":           42.9,
				"consumable_price":       120,
			},
		},
		AgreedVirtualAssetSale: true,
		AgreedSellerAgreement:  true,
	})
	if err != nil {
		t.Fatalf("创建待审核商品失败: %v", err)
	}
	assertEqual(t, "商品审核状态", dto.ReviewStatus, "pending")
	return dto
}

func adjustAndApproveListing(t *testing.T, service *listing.Service, adminID uint64, listingID uint64) *listing.ListingDTO {
	t.Helper()
	adjusted, err := service.AdjustReviewPrice(t.Context(), adminID, listingID, listing.AdminPriceAdjustRequest{
		BuyerTotalPriceCent: 38300,
		Reason:              "E2E 审核调价",
	}, auditlog.Meta{IP: "127.0.0.1", RequestID: "e2e-adjust-price"})
	if err != nil {
		t.Fatalf("审核调价失败: %v", err)
	}
	approved, err := service.Approve(t.Context(), adjusted.ID)
	if err != nil {
		t.Fatalf("审核通过失败: %v", err)
	}
	assertEqual(t, "审核通过商品状态", approved.Status, "published")
	return approved
}

func mustCreateOrder(t *testing.T, service *order.Service, renterID uint64, listingID uint64) *order.OrderDTO {
	t.Helper()
	dto, err := service.Create(t.Context(), renterID, order.CreateRequest{ListingID: listingID})
	if err != nil {
		t.Fatalf("创建订单失败: %v", err)
	}
	assertEqual(t, "新订单状态", dto.Status, "pending_payment")
	assertEqual(t, "订单租金", *dto.RentAmountCent, int64(38300))
	assertEqual(t, "订单押金", dto.DepositAmountCent, int64(15000))
	return dto
}

func assertFinanceDashboard(t *testing.T, service *adminfinance.Service, orderNo string) {
	t.Helper()
	now := time.Now()
	query := adminfinance.DashboardQuery{
		StartDate: now.Add(-time.Hour),
		EndDate:   now.Add(time.Hour),
	}
	dashboard, err := service.Dashboard(t.Context(), query)
	if err != nil {
		t.Fatalf("读取财务看板失败: %v", err)
	}
	assertEqual(t, "财务总流水", dashboard.Summary.TotalFlowAmountCent, int64(53300))
	assertEqual(t, "财务已退款", dashboard.Summary.TotalRefundAmountCent, int64(22800))
	assertEqual(t, "财务平台收入", dashboard.Summary.PlatformIncomeAmountCent, int64(3000))
	assertEqual(t, "财务号主应收", dashboard.Summary.OwnerShouldIncomeAmountCent, int64(27500))
	assertEqual(t, "财务号主钱包入账", dashboard.Summary.OwnerWalletIncomeAmountCent, int64(27500))
	assertEqual(t, "财务结算订单数", dashboard.Summary.SettledOrderCount, int64(1))

	details, err := service.Details(t.Context(), adminfinance.DetailQuery{
		OrderNo:   orderNo,
		DateType:  "settled",
		StartDate: query.StartDate,
		EndDate:   query.EndDate,
		Page:      1,
		PageSize:  10,
	})
	if err != nil {
		t.Fatalf("读取财务明细失败: %v", err)
	}
	assertEqual(t, "财务明细数量", details.Total, int64(1))
	items, ok := details.Items.([]adminfinance.FinanceDetailDTO)
	if !ok || len(items) != 1 {
		t.Fatalf("财务明细类型异常: %#v", details.Items)
	}
	assertEqual(t, "明细订单号", items[0].OrderNo, orderNo)
	assertEqual(t, "明细平台净收入", items[0].PlatformNetAmountCent, int64(3000))
}

func assertWalletAndWithdrawal(t *testing.T, walletService *wallet.Service, withdrawalService *withdrawal.Service, ownerID uint64, adminID uint64, paymentAccountID uint64) {
	t.Helper()
	accountBefore, err := walletService.Account(t.Context(), ownerID)
	if err != nil {
		t.Fatalf("读取号主钱包失败: %v", err)
	}
	assertEqual(t, "提现前可用余额", accountBefore.AvailableBalanceCent, int64(27500))

	req, err := withdrawalService.Create(t.Context(), ownerID, withdrawal.CreateWithdrawalRequest{
		PaymentAccountID: paymentAccountID,
		AmountCent:       10000,
	})
	if err != nil {
		t.Fatalf("创建提现失败: %v", err)
	}
	assertEqual(t, "提现申请金额", req.AmountCent, int64(10000))
	assertEqual(t, "提现申请状态", req.Status, "pending")

	approved := true
	reviewed, err := withdrawalService.Review(t.Context(), adminID, req.ID, withdrawal.ReviewWithdrawalRequest{
		Approved: &approved,
		Remark:   "E2E 审核通过",
	})
	if err != nil {
		t.Fatalf("审核提现失败: %v", err)
	}
	assertEqual(t, "提现审核后状态", reviewed.Status, "processing")

	paid, err := withdrawalService.ConfirmPayment(t.Context(), adminID, req.ID, withdrawal.ConfirmPaymentRequest{
		PaymentProofURL: "https://example.com/proof.png",
		Remark:          "E2E 已打款",
	})
	if err != nil {
		t.Fatalf("确认提现打款失败: %v", err)
	}
	assertEqual(t, "提现完成状态", paid.Status, "completed")
	assertEqual(t, "提现到账金额", paid.ActualAmountCent, int64(10000))

	accountAfter, err := walletService.Account(t.Context(), ownerID)
	if err != nil {
		t.Fatalf("读取提现后钱包失败: %v", err)
	}
	assertEqual(t, "提现后可用余额", accountAfter.AvailableBalanceCent, int64(17500))
	assertEqual(t, "提现后冻结余额", accountAfter.FrozenBalanceCent, int64(0))
}

func assertEqual[T comparable](t *testing.T, name string, got T, want T) {
	t.Helper()
	if got != want {
		t.Fatalf("%s = %v, want %v", name, got, want)
	}
}