package binancerecharge

import (
	"context"
	"testing"

	"chatapp3-golang/internal/config"
	"chatapp3-golang/internal/integration"
	"chatapp3-golang/internal/model"

	"gorm.io/driver/sqlite"
	"gorm.io/gorm"
)

func TestSaveConfigKeepsExistingSecretWhenBlank(t *testing.T) {
	db := newBinanceRechargeTestDB(t)
	service := NewService(config.Config{}, db, &fakeBinanceJavaGateway{})

	if _, err := service.SaveConfig(context.Background(), SaveConfigRequest{
		SysOrigin: "LIKEI",
		APIKey:    "key-1",
		APISecret: "secret-1",
		Enabled:   true,
		Rates: []RateConfigRequest{
			{MinAmount: "0", MaxAmount: "100", GoldPerUSD: "80000"},
		},
	}); err != nil {
		t.Fatalf("initial save config: %v", err)
	}

	resp, err := service.SaveConfig(context.Background(), SaveConfigRequest{
		SysOrigin: "LIKEI",
		APIKey:    "key-2",
		Enabled:   true,
		Rates: []RateConfigRequest{
			{MinAmount: "0", MaxAmount: "0", GoldPerUSD: "82000"},
		},
	})
	if err != nil {
		t.Fatalf("update config: %v", err)
	}
	if resp.APIKey != "key-2" {
		t.Fatalf("APIKey = %q, want key-2", resp.APIKey)
	}
	if !resp.APISecretConfigured {
		t.Fatalf("APISecretConfigured = false, want true")
	}

	var row model.BinanceRechargeConfig
	if err := db.Where("sys_origin = ?", "LIKEI").First(&row).Error; err != nil {
		t.Fatalf("query config: %v", err)
	}
	if row.APISecret != "secret-1" {
		t.Fatalf("APISecret = %q, want secret-1", row.APISecret)
	}
}

func TestVerifyAndRechargeIsIdempotent(t *testing.T) {
	db := newBinanceRechargeTestDB(t)
	java := &fakeBinanceJavaGateway{
		profile: integration.UserProfile{
			ID:        integration.Int64Value(200),
			OriginSys: "LIKEI",
		},
		balanceExists: true,
	}
	service := NewService(config.Config{}, db, java)
	service.SetBinanceVerifier(&fakeBinanceVerifier{})

	if _, err := service.SaveConfig(context.Background(), SaveConfigRequest{
		SysOrigin: "LIKEI",
		APIKey:    "key",
		APISecret: "secret",
		Enabled:   true,
		Rates: []RateConfigRequest{
			{MinAmount: "0", MaxAmount: "100", GoldPerUSD: "80000"},
			{MinAmount: "100", MaxAmount: "0", GoldPerUSD: "82000"},
		},
	}); err != nil {
		t.Fatalf("save config: %v", err)
	}

	req := VerifyRechargeRequest{
		TargetUserID:   200,
		OrderNo:        "order-1",
		TransferAmount: "12.5",
		TransferType:   TransferTypeBinancePay,
		BillNo:         "bill-1",
	}
	resp, err := service.VerifyAndRecharge(context.Background(), AuthUser{
		UserID:    100,
		SysOrigin: "LIKEI",
	}, req)
	if err != nil {
		t.Fatalf("verify recharge: %v", err)
	}
	if resp.Idempotent {
		t.Fatalf("first response idempotent = true, want false")
	}
	if resp.GoldAmount != 1_000_000 {
		t.Fatalf("GoldAmount = %d, want 1000000", resp.GoldAmount)
	}
	if java.changeCalls != 1 {
		t.Fatalf("changeCalls = %d, want 1", java.changeCalls)
	}
	if java.lastChange.RechargeType != rechargeTypeUSDT {
		t.Fatalf("RechargeType = %q, want %q", java.lastChange.RechargeType, rechargeTypeUSDT)
	}
	if java.lastChange.AcceptAmount != "1000000" {
		t.Fatalf("AcceptAmount = %q, want 1000000", java.lastChange.AcceptAmount)
	}
	if java.lastChange.OrderAmount != "12.5" {
		t.Fatalf("OrderAmount = %q, want 12.5", java.lastChange.OrderAmount)
	}

	resp, err = service.VerifyAndRecharge(context.Background(), AuthUser{
		UserID:    100,
		SysOrigin: "LIKEI",
	}, req)
	if err != nil {
		t.Fatalf("verify idempotent recharge: %v", err)
	}
	if !resp.Idempotent {
		t.Fatalf("second response idempotent = false, want true")
	}
	if java.changeCalls != 1 {
		t.Fatalf("changeCalls after idempotent call = %d, want 1", java.changeCalls)
	}

	var count int64
	if err := db.Model(&model.BinanceRechargeVerifyRecord{}).Where("status = ?", verifyStatusSuccess).Count(&count).Error; err != nil {
		t.Fatalf("count success records: %v", err)
	}
	if count != 1 {
		t.Fatalf("success record count = %d, want 1", count)
	}
}

func newBinanceRechargeTestDB(t *testing.T) *gorm.DB {
	t.Helper()
	db, err := gorm.Open(sqlite.Open("file:"+t.Name()+"?mode=memory&cache=shared"), &gorm.Config{})
	if err != nil {
		t.Fatalf("open sqlite: %v", err)
	}
	if err := db.AutoMigrate(
		&model.BinanceRechargeConfig{},
		&model.BinanceRechargeRate{},
		&model.BinanceRechargeVerifyRecord{},
	); err != nil {
		t.Fatalf("auto migrate: %v", err)
	}
	return db
}

type fakeBinanceVerifier struct{}

func (f *fakeBinanceVerifier) Verify(_ context.Context, _ BinanceCredential, query BinanceVerifyQuery) (VerifiedTransaction, error) {
	return VerifiedTransaction{
		TransactionID: query.BillNo,
		OrderType:     query.TransferType,
		Amount:        query.Amount,
		RawJSON:       `{"transactionId":"` + query.BillNo + `"}`,
	}, nil
}

type fakeBinanceJavaGateway struct {
	profile       integration.UserProfile
	balanceExists bool
	sellerExists  bool
	changeCalls   int
	lastChange    integration.FreightBalanceChangeRequest
}

func (f *fakeBinanceJavaGateway) GetUserProfile(_ context.Context, userID int64) (integration.UserProfile, error) {
	if int64(f.profile.ID) == 0 {
		f.profile.ID = integration.Int64Value(userID)
	}
	return f.profile, nil
}

func (f *fakeBinanceJavaGateway) ExistsFreightBalance(context.Context, int64) (bool, error) {
	return f.balanceExists, nil
}

func (f *fakeBinanceJavaGateway) ExistsFreightSeller(context.Context, int64) (bool, error) {
	return f.sellerExists, nil
}

func (f *fakeBinanceJavaGateway) ChangeFreightBalance(_ context.Context, req integration.FreightBalanceChangeRequest) error {
	f.changeCalls++
	f.lastChange = req
	return nil
}

func (f *fakeBinanceJavaGateway) AddFreightAgentReview(context.Context, integration.FreightAgentReviewRequest) error {
	return nil
}

func (f *fakeBinanceJavaGateway) IncreaseFreightRechargeRecord(context.Context, int64, string) error {
	return nil
}