package huobi

import (
	"crypto/ecdsa"
	"crypto/rand"
	"crypto/x509"
	"encoding/pem"
	"io/ioutil"
	"strconv"
	"strings"
	"testing"

	"github.com/thrasher-/gocryptotrader/common"
	"github.com/thrasher-/gocryptotrader/config"
	"github.com/thrasher-/gocryptotrader/currency/pair"
	"github.com/thrasher-/gocryptotrader/currency/symbol"
	exchange "github.com/thrasher-/gocryptotrader/exchanges"
)

// Please supply you own test keys here for due diligence testing.
const (
	apiKey                  = ""
	apiSecret               = ""
	canManipulateRealOrders = false
)

var h HUOBI

// getDefaultConfig returns a default huobi config
func getDefaultConfig() config.ExchangeConfig {
	return config.ExchangeConfig{
		Name:                    "Huobi",
		Enabled:                 true,
		Verbose:                 true,
		Websocket:               false,
		UseSandbox:              false,
		RESTPollingDelay:        10,
		HTTPTimeout:             15000000000,
		AuthenticatedAPISupport: true,
		APIKey:                  "",
		APISecret:               "",
		ClientID:                "",
		AvailablePairs:          "BTC-USDT,BCH-USDT",
		EnabledPairs:            "BTC-USDT",
		BaseCurrencies:          "USD",
		AssetTypes:              "SPOT",
		SupportsAutoPairUpdates: false,
		ConfigCurrencyPairFormat: &config.CurrencyPairFormatConfig{
			Uppercase: true,
			Delimiter: "-",
		},
		RequestCurrencyPairFormat: &config.CurrencyPairFormatConfig{
			Uppercase: false,
		},
	}
}

func TestSetDefaults(t *testing.T) {
	h.SetDefaults()
}

func TestSetup(t *testing.T) {
	cfg := config.GetConfig()
	cfg.LoadConfig("../../testdata/configtest.json")
	hConfig, err := cfg.GetExchangeConfig("Huobi")
	if err != nil {
		t.Error("Test Failed - Huobi Setup() init error")
	}

	hConfig.AuthenticatedAPISupport = true
	hConfig.APIKey = apiKey
	hConfig.APISecret = apiSecret

	h.Setup(hConfig)
}

func TestGetSpotKline(t *testing.T) {
	t.Parallel()
	_, err := h.GetSpotKline(KlinesRequestParams{
		Symbol: "btcusdt",
		Period: TimeIntervalHour,
		Size:   0,
	})
	if err != nil {
		t.Errorf("Test failed - Huobi TestGetSpotKline: %s", err)
	}
}

func TestGetMarketDetailMerged(t *testing.T) {
	t.Parallel()
	_, err := h.GetMarketDetailMerged("btcusdt")
	if err != nil {
		t.Errorf("Test failed - Huobi TestGetMarketDetailMerged: %s", err)
	}
}

func TestGetDepth(t *testing.T) {
	t.Parallel()
	_, err := h.GetDepth(OrderBookDataRequestParams{
		Symbol: "btcusdt",
		Type:   OrderBookDataRequestParamsTypeStep1,
	})

	if err != nil {
		t.Errorf("Test failed - Huobi TestGetDepth: %s", err)
	}
}

func TestGetTrades(t *testing.T) {
	t.Parallel()
	_, err := h.GetTrades("btcusdt")
	if err != nil {
		t.Errorf("Test failed - Huobi TestGetTrades: %s", err)
	}
}

func TestGetLatestSpotPrice(t *testing.T) {
	t.Parallel()
	_, err := h.GetLatestSpotPrice("btcusdt")
	if err != nil {
		t.Errorf("Test failed - Huobi GetLatestSpotPrice: %s", err)
	}
}

func TestGetTradeHistory(t *testing.T) {
	t.Parallel()
	_, err := h.GetTradeHistory("btcusdt", "50")
	if err != nil {
		t.Errorf("Test failed - Huobi TestGetTradeHistory: %s", err)
	}
}

func TestGetMarketDetail(t *testing.T) {
	t.Parallel()
	_, err := h.GetMarketDetail("btcusdt")
	if err != nil {
		t.Errorf("Test failed - Huobi TestGetTradeHistory: %s", err)
	}
}

func TestGetSymbols(t *testing.T) {
	t.Parallel()
	_, err := h.GetSymbols()
	if err != nil {
		t.Errorf("Test failed - Huobi TestGetSymbols: %s", err)
	}
}

func TestGetCurrencies(t *testing.T) {
	t.Parallel()
	_, err := h.GetCurrencies()
	if err != nil {
		t.Errorf("Test failed - Huobi TestGetCurrencies: %s", err)
	}
}

func TestGetTimestamp(t *testing.T) {
	t.Parallel()
	_, err := h.GetTimestamp()
	if err != nil {
		t.Errorf("Test failed - Huobi TestGetTimestamp: %s", err)
	}
}

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

	if h.APIKey == "" || h.APISecret == "" || h.APIAuthPEMKey == "" {
		t.Skip()
	}

	_, err := h.GetAccounts()
	if err != nil {
		t.Errorf("Test failed - Huobi GetAccounts: %s", err)
	}
}

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

	if h.APIKey == "" || h.APISecret == "" || h.APIAuthPEMKey == "" {
		t.Skip()
	}

	result, err := h.GetAccounts()
	if err != nil {
		t.Errorf("Test failed - Huobi GetAccounts: %s", err)
	}

	userID := strconv.FormatInt(result[0].ID, 10)
	_, err = h.GetAccountBalance(userID)
	if err != nil {
		t.Errorf("Test failed - Huobi GetAccountBalance: %s", err)
	}
}

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

	if h.APIKey == "" || h.APISecret == "" || h.APIAuthPEMKey == "" {
		t.Skip()
	}

	arg := SpotNewOrderRequestParams{
		Symbol:    "btcusdt",
		AccountID: 1,
		Amount:    0.01,
		Price:     10.1,
		Type:      SpotNewOrderRequestTypeBuyLimit,
	}

	_, err := h.SpotNewOrder(arg)
	if err != nil {
		t.Errorf("Test failed - Huobi SpotNewOrder: %s", err)
	}
}

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

	_, err := h.CancelExistingOrder(1337)
	if err == nil {
		t.Error("Test failed - Huobi TestCancelExistingOrder: Invalid orderID returned true")
	}
}

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

	_, err := h.GetOrder(1337)
	if err == nil {
		t.Error("Test failed - Huobi TestCancelOrder: Invalid orderID returned true")
	}
}

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

	if h.APIKey == "" || h.APISecret == "" || h.APIAuthPEMKey == "" {
		t.Skip()
	}

	_, err := h.GetMarginLoanOrders("btcusdt", "", "", "", "", "", "", "")
	if err != nil {
		t.Errorf("Test failed - Huobi TestGetMarginLoanOrders: %s", err)
	}
}

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

	if h.APIKey == "" || h.APISecret == "" || h.APIAuthPEMKey == "" {
		t.Skip()
	}

	_, err := h.GetMarginAccountBalance("btcusdt")
	if err != nil {
		t.Errorf("Test failed - Huobi TestGetMarginAccountBalance: %s", err)
	}
}

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

	_, err := h.CancelWithdraw(1337)
	if err == nil {
		t.Error("Test failed - Huobi TestCancelWithdraw: Invalid withdraw-ID was valid")
	}
}

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

	pemKey := strings.NewReader(h.APIAuthPEMKey)
	pemBytes, err := ioutil.ReadAll(pemKey)
	if err != nil {
		t.Fatalf("Test Failed. TestPEMLoadAndSign Unable to ioutil.ReadAll PEM key: %s", err)
	}

	block, _ := pem.Decode(pemBytes)
	if block == nil {
		t.Fatalf("Test Failed. TestPEMLoadAndSign Block is nil")
	}

	x509Encoded := block.Bytes
	privKey, err := x509.ParseECPrivateKey(x509Encoded)
	if err != nil {
		t.Fatalf("Test Failed. TestPEMLoadAndSign Unable to ParseECPrivKey: %s", err)
	}

	_, _, err = ecdsa.Sign(rand.Reader, privKey, common.GetSHA256([]byte("test")))
	if err != nil {
		t.Fatalf("Test Failed. TestPEMLoadAndSign Unable to sign: %s", err)
	}
}

func setFeeBuilder() exchange.FeeBuilder {
	return exchange.FeeBuilder{
		Amount:              1,
		Delimiter:           "_",
		FeeType:             exchange.CryptocurrencyTradeFee,
		FirstCurrency:       symbol.BTC,
		SecondCurrency:      symbol.LTC,
		IsMaker:             false,
		PurchasePrice:       1,
		CurrencyItem:        symbol.USD,
		BankTransactionType: exchange.WireTransfer,
	}
}

func TestGetFee(t *testing.T) {
	t.Parallel()
	var feeBuilder = setFeeBuilder()
	// CryptocurrencyTradeFee Basic
	if resp, err := h.GetFee(feeBuilder); resp != float64(0.002) || err != nil {
		t.Error(err)
		t.Errorf("Test Failed - GetFee() error. Expected: %f, Received: %f", float64(0.002), resp)
	}

	// CryptocurrencyTradeFee High quantity
	feeBuilder = setFeeBuilder()
	feeBuilder.Amount = 1000
	feeBuilder.PurchasePrice = 1000
	if resp, err := h.GetFee(feeBuilder); resp != float64(2000) || err != nil {
		t.Errorf("Test Failed - GetFee() error. Expected: %f, Received: %f", float64(2000), resp)
		t.Error(err)
	}

	// CryptocurrencyTradeFee IsMaker
	feeBuilder = setFeeBuilder()
	feeBuilder.IsMaker = true
	if resp, err := h.GetFee(feeBuilder); resp != float64(0.002) || err != nil {
		t.Errorf("Test Failed - GetFee() error. Expected: %f, Received: %f", float64(0.002), resp)
		t.Error(err)
	}

	// CryptocurrencyTradeFee Negative purchase price
	feeBuilder = setFeeBuilder()
	feeBuilder.PurchasePrice = -1000
	if resp, err := h.GetFee(feeBuilder); resp != float64(0) || err != nil {
		t.Errorf("Test Failed - GetFee() error. Expected: %f, Received: %f", float64(0), resp)
		t.Error(err)
	}
	// CryptocurrencyWithdrawalFee Basic
	feeBuilder = setFeeBuilder()
	feeBuilder.FeeType = exchange.CryptocurrencyWithdrawalFee
	if resp, err := h.GetFee(feeBuilder); resp != float64(0) || err != nil {
		t.Errorf("Test Failed - GetFee() error. Expected: %f, Received: %f", float64(0), resp)
		t.Error(err)
	}

	// CryptocurrencyWithdrawalFee Invalid currency
	feeBuilder = setFeeBuilder()
	feeBuilder.FirstCurrency = "hello"
	feeBuilder.FeeType = exchange.CryptocurrencyWithdrawalFee
	if resp, err := h.GetFee(feeBuilder); resp != float64(0) || err != nil {
		t.Errorf("Test Failed - GetFee() error. Expected: %f, Received: %f", float64(0), resp)
		t.Error(err)
	}

	// CyptocurrencyDepositFee Basic
	feeBuilder = setFeeBuilder()
	feeBuilder.FeeType = exchange.CyptocurrencyDepositFee
	if resp, err := h.GetFee(feeBuilder); resp != float64(0) || err != nil {
		t.Errorf("Test Failed - GetFee() error. Expected: %f, Received: %f", float64(0), resp)
		t.Error(err)
	}

	// InternationalBankDepositFee Basic
	feeBuilder = setFeeBuilder()
	feeBuilder.FeeType = exchange.InternationalBankDepositFee
	if resp, err := h.GetFee(feeBuilder); resp != float64(0) || err != nil {
		t.Errorf("Test Failed - GetFee() error. Expected: %f, Received: %f", float64(0), resp)
		t.Error(err)
	}

	// InternationalBankWithdrawalFee Basic
	feeBuilder = setFeeBuilder()
	feeBuilder.FeeType = exchange.InternationalBankWithdrawalFee
	feeBuilder.CurrencyItem = symbol.USD
	if resp, err := h.GetFee(feeBuilder); resp != float64(0) || err != nil {
		t.Errorf("Test Failed - GetFee() error. Expected: %f, Received: %f", float64(0), resp)
		t.Error(err)
	}
}

func TestFormatWithdrawPermissions(t *testing.T) {
	// Arrange
	h.SetDefaults()
	expectedResult := exchange.AutoWithdrawCryptoWithSetupText
	// Act
	withdrawPermissions := h.FormatWithdrawPermissions()
	// Assert
	if withdrawPermissions != expectedResult {
		t.Errorf("Expected: %s, Received: %s", expectedResult, withdrawPermissions)
	}
}

// Any tests below this line have the ability to impact your orders on the exchange. Enable canManipulateRealOrders to run them
// ----------------------------------------------------------------------------------------------------------------------------
func areTestAPIKeysSet() bool {
	if h.APIKey != "" && h.APIKey != "Key" &&
		h.APISecret != "" && h.APISecret != "Secret" {
		return true
	}
	return false
}

func TestSubmitOrder(t *testing.T) {
	h.SetDefaults()
	TestSetup(t)

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

	if (h.APIKey == "" || h.APIKey == "Key") &&
		(h.APISecret == "" || h.APISecret == "Secret") {
		t.Skip()
	}

	var p = pair.CurrencyPair{
		Delimiter:      "",
		FirstCurrency:  symbol.BTC,
		SecondCurrency: symbol.USDT,
	}

	accounts, err := h.GetAccounts()
	if err != nil {
		t.Errorf("Failed to get accounts. Err: %s", err)
	}

	response, err := h.SubmitOrder(p, exchange.Buy, exchange.Limit, 1, 10, strconv.FormatInt(accounts[0].ID, 10))
	if areTestAPIKeysSet() && (err != nil || !response.IsOrderPlaced) {
		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) {
	// Arrange
	h.SetDefaults()
	TestSetup(t)

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

	currencyPair := pair.NewCurrencyPair(symbol.LTC, symbol.BTC)

	var orderCancellation = exchange.OrderCancellation{
		OrderID:       "1",
		WalletAddress: "1F5zVDgNjorJ51oGebSvNCrSAHpwGkUdDB",
		AccountID:     "1",
		CurrencyPair:  currencyPair,
	}

	// Act
	err := h.CancelOrder(orderCancellation)

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

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

	currencyPair := pair.NewCurrencyPair(symbol.LTC, symbol.BTC)
	var orderCancellation = exchange.OrderCancellation{
		OrderID:       "1",
		WalletAddress: "1F5zVDgNjorJ51oGebSvNCrSAHpwGkUdDB",
		AccountID:     "1",
		CurrencyPair:  currencyPair,
	}

	// Act
	resp, err := h.CancelAllOrders(orderCancellation)
	// Assert
	if !areTestAPIKeysSet() && err == nil {
		t.Errorf("Expecting an error when no keys are set: %v", err)
	}
	if areTestAPIKeysSet() && err != nil {
		t.Errorf("Could not cancel orders: %v", err)
	}

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

func TestGetAccountInfo(t *testing.T) {
	if apiKey == "" || apiSecret == "" {
		_, err := h.GetAccountInfo()
		if err == nil {
			t.Error("Test Failed - GetAccountInfo() error")
		}
	} else {
		_, err := h.GetAccountInfo()
		if err != nil {
			t.Error("Test Failed - GetAccountInfo() error", err)
		}
	}
}

func TestModifyOrder(t *testing.T) {
	_, err := h.ModifyOrder(exchange.ModifyOrder{})
	if err == nil {
		t.Error("Test failed - ModifyOrder() error")
	}
}

func TestWithdraw(t *testing.T) {
	h.SetDefaults()
	TestSetup(t)
	var withdrawCryptoRequest = exchange.WithdrawRequest{
		Amount:      100,
		Currency:    symbol.BTC,
		Address:     "1F5zVDgNjorJ51oGebSvNCrSAHpwGkUdDB",
		Description: "WITHDRAW IT ALL",
	}

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

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