gocryptotrader/exchanges/poloniex/poloniex_wrapper.go

package poloniex

import (
	"fmt"
	"strconv"
	"sync"

	"github.com/thrasher-/gocryptotrader/common"
	"github.com/thrasher-/gocryptotrader/currency/pair"
	exchange "github.com/thrasher-/gocryptotrader/exchanges"
	"github.com/thrasher-/gocryptotrader/exchanges/orderbook"
	"github.com/thrasher-/gocryptotrader/exchanges/ticker"
	log "github.com/thrasher-/gocryptotrader/logger"
)

// Start starts the Poloniex go routine
func (p *Poloniex) Start(wg *sync.WaitGroup) {
	wg.Add(1)
	go func() {
		p.Run()
		wg.Done()
	}()
}

// Run implements the Poloniex wrapper
func (p *Poloniex) Run() {
	if p.Verbose {
		log.Debugf("%s Websocket: %s (url: %s).\n", p.GetName(), common.IsEnabled(p.Websocket.IsEnabled()), poloniexWebsocketAddress)
		log.Debugf("%s polling delay: %ds.\n", p.GetName(), p.RESTPollingDelay)
		log.Debugf("%s %d currencies enabled: %s.\n", p.GetName(), len(p.EnabledPairs), p.EnabledPairs)
	}

	exchangeCurrencies, err := p.GetExchangeCurrencies()
	if err != nil {
		log.Errorf("%s Failed to get available symbols.\n", p.GetName())
	} else {
		forceUpdate := false
		if common.StringDataCompare(p.AvailablePairs, "BTC_USDT") {
			log.Warnf("%s contains invalid pair, forcing upgrade of available currencies.\n",
				p.GetName())
			forceUpdate = true
		}
		err = p.UpdateCurrencies(exchangeCurrencies, false, forceUpdate)
		if err != nil {
			log.Errorf("%s Failed to update available currencies %s.\n", p.GetName(), err)
		}
	}
}

// UpdateTicker updates and returns the ticker for a currency pair
func (p *Poloniex) UpdateTicker(currencyPair pair.CurrencyPair, assetType string) (ticker.Price, error) {
	var tickerPrice ticker.Price
	tick, err := p.GetTicker()
	if err != nil {
		return tickerPrice, err
	}

	for _, x := range p.GetEnabledCurrencies() {
		var tp ticker.Price
		curr := exchange.FormatExchangeCurrency(p.GetName(), x).String()
		tp.Pair = x
		tp.Ask = tick[curr].LowestAsk
		tp.Bid = tick[curr].HighestBid
		tp.High = tick[curr].High24Hr
		tp.Last = tick[curr].Last
		tp.Low = tick[curr].Low24Hr
		tp.Volume = tick[curr].BaseVolume
		ticker.ProcessTicker(p.GetName(), x, tp, assetType)
	}
	return ticker.GetTicker(p.Name, currencyPair, assetType)
}

// GetTickerPrice returns the ticker for a currency pair
func (p *Poloniex) GetTickerPrice(currencyPair pair.CurrencyPair, assetType string) (ticker.Price, error) {
	tickerNew, err := ticker.GetTicker(p.GetName(), currencyPair, assetType)
	if err != nil {
		return p.UpdateTicker(currencyPair, assetType)
	}
	return tickerNew, nil
}

// GetOrderbookEx returns orderbook base on the currency pair
func (p *Poloniex) GetOrderbookEx(currencyPair pair.CurrencyPair, assetType string) (orderbook.Base, error) {
	ob, err := orderbook.GetOrderbook(p.GetName(), currencyPair, assetType)
	if err != nil {
		return p.UpdateOrderbook(currencyPair, assetType)
	}
	return ob, nil
}

// UpdateOrderbook updates and returns the orderbook for a currency pair
func (p *Poloniex) UpdateOrderbook(currencyPair pair.CurrencyPair, assetType string) (orderbook.Base, error) {
	var orderBook orderbook.Base
	orderbookNew, err := p.GetOrderbook("", 1000)
	if err != nil {
		return orderBook, err
	}

	for _, x := range p.GetEnabledCurrencies() {
		currency := exchange.FormatExchangeCurrency(p.Name, x).String()
		data, ok := orderbookNew.Data[currency]
		if !ok {
			continue
		}
		orderBook.Pair = x

		var obItems []orderbook.Item
		for y := range data.Bids {
			obData := data.Bids[y]
			obItems = append(obItems, orderbook.Item{Amount: obData.Amount, Price: obData.Price})
		}

		orderBook.Bids = obItems
		obItems = []orderbook.Item{}
		for y := range data.Asks {
			obData := data.Asks[y]
			obItems = append(obItems, orderbook.Item{Amount: obData.Amount, Price: obData.Price})
		}
		orderBook.Asks = obItems
		orderbook.ProcessOrderbook(p.Name, x, orderBook, assetType)
	}
	return orderbook.GetOrderbook(p.Name, currencyPair, assetType)
}

// GetAccountInfo retrieves balances for all enabled currencies for the
// Poloniex exchange
func (p *Poloniex) GetAccountInfo() (exchange.AccountInfo, error) {
	var response exchange.AccountInfo
	response.ExchangeName = p.GetName()
	accountBalance, err := p.GetBalances()
	if err != nil {
		return response, err
	}

	for x, y := range accountBalance.Currency {
		var exchangeCurrency exchange.AccountCurrencyInfo
		exchangeCurrency.CurrencyName = x
		exchangeCurrency.TotalValue = y
		response.Currencies = append(response.Currencies, exchangeCurrency)
	}
	return response, nil
}

// GetFundingHistory returns funding history, deposits and
// withdrawals
func (p *Poloniex) GetFundingHistory() ([]exchange.FundHistory, error) {
	var fundHistory []exchange.FundHistory
	return fundHistory, common.ErrFunctionNotSupported
}

// GetExchangeHistory returns historic trade data since exchange opening.
func (p *Poloniex) GetExchangeHistory(currencyPair pair.CurrencyPair, assetType string) ([]exchange.TradeHistory, error) {
	var resp []exchange.TradeHistory

	return resp, common.ErrNotYetImplemented
}

// SubmitOrder submits a new order
func (p *Poloniex) SubmitOrder(currencyPair pair.CurrencyPair, side exchange.OrderSide, orderType exchange.OrderType, amount, price float64, clientID string) (exchange.SubmitOrderResponse, error) {
	var submitOrderResponse exchange.SubmitOrderResponse
	fillOrKill := orderType == exchange.Market
	isBuyOrder := side == exchange.Buy
	response, err := p.PlaceOrder(currencyPair.Pair().String(), price, amount, false, fillOrKill, isBuyOrder)

	if response.OrderNumber > 0 {
		submitOrderResponse.OrderID = fmt.Sprintf("%v", response.OrderNumber)
	}

	if err == nil {
		submitOrderResponse.IsOrderPlaced = true
	}

	return submitOrderResponse, err
}

// ModifyOrder will allow of changing orderbook placement and limit to
// market conversion
func (p *Poloniex) ModifyOrder(action exchange.ModifyOrder) (string, error) {
	oID, err := strconv.ParseInt(action.OrderID, 10, 64)
	if err != nil {
		return "", err
	}

	resp, err := p.MoveOrder(oID,
		action.Price,
		action.Amount,
		action.PostOnly,
		action.ImmediateOrCancel)
	if err != nil {
		return "", err
	}

	return strconv.FormatInt(resp.OrderNumber, 10), nil
}

// CancelOrder cancels an order by its corresponding ID number
func (p *Poloniex) CancelOrder(order exchange.OrderCancellation) error {
	orderIDInt, err := strconv.ParseInt(order.OrderID, 10, 64)

	if err != nil {
		return err
	}

	_, err = p.CancelExistingOrder(orderIDInt)

	return err
}

// CancelAllOrders cancels all orders associated with a currency pair
func (p *Poloniex) CancelAllOrders(orderCancellation exchange.OrderCancellation) (exchange.CancelAllOrdersResponse, error) {
	cancelAllOrdersResponse := exchange.CancelAllOrdersResponse{
		OrderStatus: make(map[string]string),
	}
	openOrders, err := p.GetOpenOrdersForAllCurrencies()
	if err != nil {
		return cancelAllOrdersResponse, err
	}

	for _, openOrderPerCurrency := range openOrders.Data {
		for _, openOrder := range openOrderPerCurrency {
			_, err = p.CancelExistingOrder(openOrder.OrderNumber)
			if err != nil {
				cancelAllOrdersResponse.OrderStatus[strconv.FormatInt(openOrder.OrderNumber, 10)] = err.Error()
			}
		}
	}

	return cancelAllOrdersResponse, nil
}

// GetOrderInfo returns information on a current open order
func (p *Poloniex) GetOrderInfo(orderID int64) (exchange.OrderDetail, error) {
	var orderDetail exchange.OrderDetail
	return orderDetail, common.ErrNotYetImplemented
}

// GetDepositAddress returns a deposit address for a specified currency
func (p *Poloniex) GetDepositAddress(cryptocurrency pair.CurrencyItem) (string, error) {
	return "", common.ErrNotYetImplemented
}

// WithdrawCryptocurrencyFunds returns a withdrawal ID when a withdrawal is
// submitted
func (p *Poloniex) WithdrawCryptocurrencyFunds(withdrawRequest exchange.WithdrawRequest) (string, error) {
	_, err := p.Withdraw(withdrawRequest.Currency.String(), withdrawRequest.Address, withdrawRequest.Amount)
	return "", err
}

// WithdrawFiatFunds returns a withdrawal ID when a
// withdrawal is submitted
func (p *Poloniex) WithdrawFiatFunds(withdrawRequest exchange.WithdrawRequest) (string, error) {
	return "", common.ErrNotYetImplemented
}

// WithdrawFiatFundsToInternationalBank returns a withdrawal ID when a
// withdrawal is submitted
func (p *Poloniex) WithdrawFiatFundsToInternationalBank(withdrawRequest exchange.WithdrawRequest) (string, error) {
	return "", common.ErrNotYetImplemented
}

// GetWebsocket returns a pointer to the exchange websocket
func (p *Poloniex) GetWebsocket() (*exchange.Websocket, error) {
	return p.Websocket, nil
}

// GetFeeByType returns an estimate of fee based on type of transaction
func (p *Poloniex) GetFeeByType(feeBuilder exchange.FeeBuilder) (float64, error) {
	return p.GetFee(feeBuilder)
}

// GetWithdrawCapabilities returns the types of withdrawal methods permitted by the exchange
func (p *Poloniex) GetWithdrawCapabilities() uint32 {
	return p.GetWithdrawPermissions()
}