package exmo

import (
	"context"
	"errors"
	"log"
	"os"
	"sync"
	"testing"
	"time"

	"github.com/thrasher-corp/gocryptotrader/common"
	"github.com/thrasher-corp/gocryptotrader/config"
	"github.com/thrasher-corp/gocryptotrader/core"
	"github.com/thrasher-corp/gocryptotrader/currency"
	exchange "github.com/thrasher-corp/gocryptotrader/exchanges"
	"github.com/thrasher-corp/gocryptotrader/exchanges/asset"
	"github.com/thrasher-corp/gocryptotrader/exchanges/order"
	"github.com/thrasher-corp/gocryptotrader/portfolio/withdraw"
)

const (
	APIKey                  = ""
	APISecret               = ""
	canManipulateRealOrders = false
)

var (
	e EXMO
)

func TestMain(m *testing.M) {
	e.SetDefaults()
	cfg := config.GetConfig()
	err := cfg.LoadConfig("../../testdata/configtest.json", true)
	if err != nil {
		log.Fatal("Exmo load config error", err)
	}
	exmoConf, err := cfg.GetExchangeConfig("EXMO")
	if err != nil {
		log.Fatal("Exmo Setup() init error")
	}

	err = e.Setup(exmoConf)
	if err != nil {
		log.Fatal("Exmo setup error", err)
	}

	e.API.AuthenticatedSupport = true
	e.SetCredentials(APIKey, APISecret, "", "", "", "")
	os.Exit(m.Run())
}

func TestStart(t *testing.T) {
	t.Parallel()
	err := e.Start(context.Background(), nil)
	if !errors.Is(err, common.ErrNilPointer) {
		t.Fatalf("received: '%v' but expected: '%v'", err, common.ErrNilPointer)
	}
	var testWg sync.WaitGroup
	err = e.Start(context.Background(), &testWg)
	if err != nil {
		t.Fatal(err)
	}
	testWg.Wait()
}

func TestGetTrades(t *testing.T) {
	t.Parallel()
	_, err := e.GetTrades(context.Background(), "BTC_USD")
	if err != nil {
		t.Errorf("Err: %s", err)
	}
}

func TestGetOrderbook(t *testing.T) {
	t.Parallel()
	_, err := e.GetOrderbook(context.Background(), "BTC_USD")
	if err != nil {
		t.Errorf("Err: %s", err)
	}
}

func TestGetTicker(t *testing.T) {
	t.Parallel()
	_, err := e.GetTicker(context.Background())
	if err != nil {
		t.Errorf("Err: %s", err)
	}
}

func TestGetPairSettings(t *testing.T) {
	t.Parallel()
	_, err := e.GetPairSettings(context.Background())
	if err != nil {
		t.Errorf("Err: %s", err)
	}
}

func TestGetCurrency(t *testing.T) {
	t.Parallel()
	_, err := e.GetCurrency(context.Background())
	if err != nil {
		t.Errorf("Err: %s", err)
	}
}

func TestGetUserInfo(t *testing.T) {
	t.Parallel()
	if !areTestAPIKeysSet() {
		t.Skip()
	}
	_, err := e.GetUserInfo(context.Background())
	if err != nil {
		t.Errorf("Err: %s", err)
	}
}

func TestGetRequiredAmount(t *testing.T) {
	t.Parallel()
	if !areTestAPIKeysSet() {
		t.Skip()
	}
	_, err := e.GetRequiredAmount(context.Background(), "BTC_USD", 100)
	if err != nil {
		t.Errorf("Err: %s", err)
	}
}

func setFeeBuilder() *exchange.FeeBuilder {
	return &exchange.FeeBuilder{
		Amount:              1,
		FeeType:             exchange.CryptocurrencyTradeFee,
		Pair:                currency.NewPair(currency.BTC, currency.LTC),
		PurchasePrice:       1,
		FiatCurrency:        currency.USD,
		BankTransactionType: exchange.WireTransfer,
	}
}

// TestGetFeeByTypeOfflineTradeFee logic test
func TestGetFeeByTypeOfflineTradeFee(t *testing.T) {
	var feeBuilder = setFeeBuilder()
	_, err := e.GetFeeByType(context.Background(), feeBuilder)
	if err != nil {
		t.Fatal(err)
	}
	if !areTestAPIKeysSet() {
		if feeBuilder.FeeType != exchange.OfflineTradeFee {
			t.Errorf("Expected %v, received %v", exchange.OfflineTradeFee, feeBuilder.FeeType)
		}
	} else {
		if feeBuilder.FeeType != exchange.CryptocurrencyTradeFee {
			t.Errorf("Expected %v, received %v", exchange.CryptocurrencyTradeFee, feeBuilder.FeeType)
		}
	}
}

func TestGetFee(t *testing.T) {
	t.Parallel()

	var feeBuilder = setFeeBuilder()

	// CryptocurrencyTradeFee Basic
	if _, err := e.GetFee(feeBuilder); err != nil {
		t.Error(err)
	}

	// CryptocurrencyTradeFee High quantity
	feeBuilder = setFeeBuilder()
	feeBuilder.Amount = 1000
	feeBuilder.PurchasePrice = 1000
	if _, err := e.GetFee(feeBuilder); err != nil {
		t.Error(err)
	}

	// CryptocurrencyTradeFee IsMaker
	feeBuilder = setFeeBuilder()
	feeBuilder.IsMaker = true
	if _, err := e.GetFee(feeBuilder); err != nil {
		t.Error(err)
	}

	// CryptocurrencyTradeFee Negative purchase price
	feeBuilder = setFeeBuilder()
	feeBuilder.PurchasePrice = -1000
	if _, err := e.GetFee(feeBuilder); err != nil {
		t.Error(err)
	}

	// CryptocurrencyWithdrawalFee Basic
	feeBuilder = setFeeBuilder()
	feeBuilder.FeeType = exchange.CryptocurrencyWithdrawalFee
	if _, err := e.GetFee(feeBuilder); err != nil {
		t.Error(err)
	}

	// CryptocurrencyWithdrawalFee Invalid currency
	feeBuilder = setFeeBuilder()
	feeBuilder.Pair.Base = currency.NewCode("hello")
	feeBuilder.FeeType = exchange.CryptocurrencyWithdrawalFee
	if _, err := e.GetFee(feeBuilder); err != nil {
		t.Error(err)
	}

	// CryptocurrencyDepositFee Basic
	feeBuilder = setFeeBuilder()
	feeBuilder.FeeType = exchange.CryptocurrencyDepositFee
	if _, err := e.GetFee(feeBuilder); err != nil {
		t.Error(err)
	}

	// InternationalBankDepositFee Basic
	feeBuilder = setFeeBuilder()
	feeBuilder.FeeType = exchange.InternationalBankDepositFee
	feeBuilder.FiatCurrency = currency.RUB
	if _, err := e.GetFee(feeBuilder); err != nil {
		t.Error(err)
	}

	// InternationalBankDepositFee Basic
	feeBuilder = setFeeBuilder()
	feeBuilder.FeeType = exchange.InternationalBankDepositFee
	feeBuilder.FiatCurrency = currency.PLN
	if _, err := e.GetFee(feeBuilder); err != nil {
		t.Error(err)
	}

	// InternationalBankWithdrawalFee Basic
	feeBuilder = setFeeBuilder()
	feeBuilder.FeeType = exchange.InternationalBankWithdrawalFee
	feeBuilder.FiatCurrency = currency.PLN
	if _, err := e.GetFee(feeBuilder); err != nil {
		t.Error(err)
	}

	// InternationalBankWithdrawalFee Basic
	feeBuilder = setFeeBuilder()
	feeBuilder.FeeType = exchange.InternationalBankWithdrawalFee
	feeBuilder.FiatCurrency = currency.TRY
	if _, err := e.GetFee(feeBuilder); err != nil {
		t.Error(err)
	}

	// InternationalBankWithdrawalFee Basic
	feeBuilder = setFeeBuilder()
	feeBuilder.FeeType = exchange.InternationalBankWithdrawalFee
	feeBuilder.FiatCurrency = currency.EUR
	if _, err := e.GetFee(feeBuilder); err != nil {
		t.Error(err)
	}

	// InternationalBankWithdrawalFee Basic
	feeBuilder = setFeeBuilder()
	feeBuilder.FeeType = exchange.InternationalBankWithdrawalFee
	feeBuilder.FiatCurrency = currency.RUB
	if _, err := e.GetFee(feeBuilder); err != nil {
		t.Error(err)
	}
}

func TestFormatWithdrawPermissions(t *testing.T) {
	expectedResult := exchange.AutoWithdrawCryptoWithSetupText + " & " + exchange.NoFiatWithdrawalsText
	withdrawPermissions := e.FormatWithdrawPermissions()
	if withdrawPermissions != expectedResult {
		t.Errorf("Expected: %s, Received: %s", expectedResult, withdrawPermissions)
	}
}

func TestGetActiveOrders(t *testing.T) {
	var getOrdersRequest = order.GetOrdersRequest{
		Type:      order.AnyType,
		AssetType: asset.Spot,
		Side:      order.AnySide,
	}

	_, err := e.GetActiveOrders(context.Background(), &getOrdersRequest)
	if areTestAPIKeysSet() && err != nil {
		t.Errorf("Could not get open orders: %s", err)
	} else if !areTestAPIKeysSet() && err == nil {
		t.Error("Expecting an error when no keys are set")
	}
}

func TestGetOrderHistory(t *testing.T) {
	var getOrdersRequest = order.GetOrdersRequest{
		Type:      order.AnyType,
		AssetType: asset.Spot,
		Side:      order.AnySide,
	}
	currPair := currency.NewPair(currency.BTC, currency.USD)
	currPair.Delimiter = "_"
	getOrdersRequest.Pairs = []currency.Pair{currPair}

	_, err := e.GetOrderHistory(context.Background(), &getOrdersRequest)
	if areTestAPIKeysSet() && err != nil {
		t.Errorf("Could not get order history: %s", err)
	} else if !areTestAPIKeysSet() && err == nil {
		t.Error("Expecting an error when no keys are set")
	}
}

// Any tests below this line have the ability to impact your orders on the exchange. Enable canManipulateRealOrders to run them
// ----------------------------------------------------------------------------------------------------------------------------
func areTestAPIKeysSet() bool {
	return e.ValidateAPICredentials(e.GetDefaultCredentials()) == nil
}

func TestSubmitOrder(t *testing.T) {
	if areTestAPIKeysSet() && !canManipulateRealOrders {
		t.Skip("API keys set, canManipulateRealOrders false, skipping test")
	}

	var orderSubmission = &order.Submit{
		Exchange: e.Name,
		Pair: currency.Pair{
			Delimiter: "_",
			Base:      currency.BTC,
			Quote:     currency.USD,
		},
		Side:      order.Buy,
		Type:      order.Limit,
		Price:     1,
		Amount:    1,
		ClientID:  "meowOrder",
		AssetType: asset.Spot,
	}
	response, err := e.SubmitOrder(context.Background(), orderSubmission)
	if areTestAPIKeysSet() && (err != nil || response.Status != order.New) {
		t.Errorf("Order failed to be placed: %v", err)
	} else if !areTestAPIKeysSet() && err == nil {
		t.Error("Expecting an error when no keys are set")
	}
}

func TestCancelExchangeOrder(t *testing.T) {
	if areTestAPIKeysSet() && !canManipulateRealOrders {
		t.Skip("API keys set, canManipulateRealOrders false, skipping test")
	}

	currencyPair := currency.NewPair(currency.LTC, currency.BTC)
	var orderCancellation = &order.Cancel{
		OrderID:       "1",
		WalletAddress: core.BitcoinDonationAddress,
		AccountID:     "1",
		Pair:          currencyPair,
		AssetType:     asset.Spot,
	}

	err := e.CancelOrder(context.Background(), orderCancellation)
	if !areTestAPIKeysSet() && err == nil {
		t.Error("Expecting an error when no keys are set")
	}
	if areTestAPIKeysSet() && err != nil {
		t.Errorf("Could not cancel orders: %v", err)
	}
}

func TestCancelAllExchangeOrders(t *testing.T) {
	if areTestAPIKeysSet() && !canManipulateRealOrders {
		t.Skip("API keys set, canManipulateRealOrders false, skipping test")
	}

	currencyPair := currency.NewPair(currency.LTC, currency.BTC)
	var orderCancellation = &order.Cancel{
		OrderID:       "1",
		WalletAddress: core.BitcoinDonationAddress,
		AccountID:     "1",
		Pair:          currencyPair,
		AssetType:     asset.Spot,
	}

	resp, err := e.CancelAllOrders(context.Background(), orderCancellation)

	if !areTestAPIKeysSet() && err == nil {
		t.Error("Expecting an error when no keys are set")
	}
	if areTestAPIKeysSet() && err != nil {
		t.Errorf("Could not cancel orders: %v", err)
	}

	if len(resp.Status) > 0 {
		t.Errorf("%v orders failed to cancel", len(resp.Status))
	}
}

func TestModifyOrder(t *testing.T) {
	if areTestAPIKeysSet() && !canManipulateRealOrders {
		t.Skip("API keys set, canManipulateRealOrders false, skipping test")
	}
	_, err := e.ModifyOrder(context.Background(), &order.Modify{AssetType: asset.Spot})
	if err == nil {
		t.Error("ModifyOrder() Expected error")
	}
}

func TestWithdraw(t *testing.T) {
	if areTestAPIKeysSet() && !canManipulateRealOrders {
		t.Skip("API keys set, canManipulateRealOrders false, skipping test")
	}

	withdrawCryptoRequest := withdraw.Request{
		Exchange:    e.Name,
		Amount:      -1,
		Currency:    currency.BTC,
		Description: "WITHDRAW IT ALL",
		Crypto: withdraw.CryptoRequest{
			Address: core.BitcoinDonationAddress,
		},
	}

	_, err := e.WithdrawCryptocurrencyFunds(context.Background(),
		&withdrawCryptoRequest)
	if !areTestAPIKeysSet() && err == nil {
		t.Error("Expecting an error when no keys are set")
	}
	if areTestAPIKeysSet() && err != nil {
		t.Errorf("Withdraw failed to be placed: %v", err)
	}
}

func TestWithdrawFiat(t *testing.T) {
	if areTestAPIKeysSet() && !canManipulateRealOrders {
		t.Skip("API keys set, canManipulateRealOrders false, skipping test")
	}

	var withdrawFiatRequest = withdraw.Request{}
	_, err := e.WithdrawFiatFunds(context.Background(), &withdrawFiatRequest)
	if err != common.ErrFunctionNotSupported {
		t.Errorf("Expected '%v', received: '%v'", common.ErrFunctionNotSupported, err)
	}
}

func TestWithdrawInternationalBank(t *testing.T) {
	if areTestAPIKeysSet() && !canManipulateRealOrders {
		t.Skip("API keys set, canManipulateRealOrders false, skipping test")
	}

	var withdrawFiatRequest = withdraw.Request{}
	_, err := e.WithdrawFiatFundsToInternationalBank(context.Background(),
		&withdrawFiatRequest)
	if err != common.ErrFunctionNotSupported {
		t.Errorf("Expected '%v', received: '%v'", common.ErrFunctionNotSupported, err)
	}
}

func TestGetDepositAddress(t *testing.T) {
	if areTestAPIKeysSet() {
		_, err := e.GetDepositAddress(context.Background(), currency.USDT, "", "ERC20")
		if err != nil {
			t.Error("GetDepositAddress() error", err)
		}
	} else {
		_, err := e.GetDepositAddress(context.Background(), currency.LTC, "", "")
		if err == nil {
			t.Error("GetDepositAddress() error cannot be nil")
		}
	}
}

func TestGetRecentTrades(t *testing.T) {
	t.Parallel()
	currencyPair, err := currency.NewPairFromString("BTC_USD")
	if err != nil {
		t.Fatal(err)
	}
	_, err = e.GetRecentTrades(context.Background(), currencyPair, asset.Spot)
	if err != nil {
		t.Error(err)
	}
}

func TestGetHistoricTrades(t *testing.T) {
	t.Parallel()
	currencyPair, err := currency.NewPairFromString("BTC_USD")
	if err != nil {
		t.Fatal(err)
	}
	_, err = e.GetHistoricTrades(context.Background(),
		currencyPair, asset.Spot, time.Now().Add(-time.Minute*15), time.Now())
	if err != nil && err != common.ErrFunctionNotSupported {
		t.Error(err)
	}
}

func TestUpdateTicker(t *testing.T) {
	t.Parallel()
	cp, err := currency.NewPairFromString("BTC_USD")
	if err != nil {
		t.Fatal(err)
	}
	_, err = e.UpdateTicker(context.Background(), cp, asset.Spot)
	if err != nil {
		t.Error(err)
	}
}

func TestUpdateTickers(t *testing.T) {
	err := e.UpdateTickers(context.Background(), asset.Spot)
	if err != nil {
		t.Error(err)
	}
}

func TestGetCryptoPaymentProvidersList(t *testing.T) {
	t.Parallel()
	_, err := e.GetCryptoPaymentProvidersList(context.Background())
	if err != nil {
		t.Fatal(err)
	}
}

func TestGetAvailableTransferChains(t *testing.T) {
	_, err := e.GetAvailableTransferChains(context.Background(), currency.USDT)
	if err != nil {
		t.Error(err)
	}
}