package yobit

import (
	"errors"
	"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 WEX go routine
func (y *Yobit) Start(wg *sync.WaitGroup) {
	wg.Add(1)
	go func() {
		y.Run()
		wg.Done()
	}()
}

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

// UpdateTicker updates and returns the ticker for a currency pair
func (y *Yobit) UpdateTicker(p pair.CurrencyPair, assetType string) (ticker.Price, error) {
	var tickerPrice ticker.Price
	pairsCollated, err := exchange.GetAndFormatExchangeCurrencies(y.Name, y.GetEnabledCurrencies())
	if err != nil {
		return tickerPrice, err
	}

	result, err := y.GetTicker(pairsCollated.String())
	if err != nil {
		return tickerPrice, err
	}

	for _, x := range y.GetEnabledCurrencies() {
		currency := exchange.FormatExchangeCurrency(y.Name, x).Lower().String()
		var tickerPrice ticker.Price
		tickerPrice.Pair = x
		tickerPrice.Last = result[currency].Last
		tickerPrice.Ask = result[currency].Sell
		tickerPrice.Bid = result[currency].Buy
		tickerPrice.Last = result[currency].Last
		tickerPrice.Low = result[currency].Low
		tickerPrice.Volume = result[currency].VolumeCurrent
		ticker.ProcessTicker(y.Name, x, tickerPrice, assetType)
	}
	return ticker.GetTicker(y.Name, p, assetType)
}

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

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

// UpdateOrderbook updates and returns the orderbook for a currency pair
func (y *Yobit) UpdateOrderbook(p pair.CurrencyPair, assetType string) (orderbook.Base, error) {
	var orderBook orderbook.Base
	orderbookNew, err := y.GetDepth(exchange.FormatExchangeCurrency(y.Name, p).String())
	if err != nil {
		return orderBook, err
	}

	for x := range orderbookNew.Bids {
		data := orderbookNew.Bids[x]
		orderBook.Bids = append(orderBook.Bids, orderbook.Item{Price: data[0], Amount: data[1]})
	}

	for x := range orderbookNew.Asks {
		data := orderbookNew.Asks[x]
		orderBook.Asks = append(orderBook.Asks, orderbook.Item{Price: data[0], Amount: data[1]})
	}

	orderbook.ProcessOrderbook(y.GetName(), p, orderBook, assetType)
	return orderbook.GetOrderbook(y.Name, p, assetType)
}

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

	for x, y := range accountBalance.FundsInclOrders {
		var exchangeCurrency exchange.AccountCurrencyInfo
		exchangeCurrency.CurrencyName = common.StringToUpper(x)
		exchangeCurrency.TotalValue = y
		exchangeCurrency.Hold = 0
		for z, w := range accountBalance.Funds {
			if z == x {
				exchangeCurrency.Hold = y - w
			}
		}

		response.Currencies = append(response.Currencies, exchangeCurrency)
	}

	return response, nil
}

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

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

	return resp, common.ErrNotYetImplemented
}

// SubmitOrder submits a new order
func (y *Yobit) SubmitOrder(p pair.CurrencyPair, side exchange.OrderSide, orderType exchange.OrderType, amount, price float64, clientID string) (exchange.SubmitOrderResponse, error) {
	var submitOrderResponse exchange.SubmitOrderResponse
	response, err := y.Trade(p.Pair().String(), orderType.ToString(), amount, price)

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

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

	return submitOrderResponse, err
}

// ModifyOrder will allow of changing orderbook placement and limit to
// market conversion
func (y *Yobit) ModifyOrder(action exchange.ModifyOrder) (string, error) {
	return "", common.ErrFunctionNotSupported
}

// CancelOrder cancels an order by its corresponding ID number
func (y *Yobit) CancelOrder(order exchange.OrderCancellation) error {
	orderIDInt, err := strconv.ParseInt(order.OrderID, 10, 64)
	if err != nil {
		return err
	}

	_, err = y.CancelExistingOrder(orderIDInt)
	return err
}

// CancelAllOrders cancels all orders associated with a currency pair
func (y *Yobit) CancelAllOrders(orderCancellation exchange.OrderCancellation) (exchange.CancelAllOrdersResponse, error) {
	cancelAllOrdersResponse := exchange.CancelAllOrdersResponse{
		OrderStatus: make(map[string]string),
	}
	var allActiveOrders []map[string]ActiveOrders

	for _, pair := range y.EnabledPairs {
		activeOrdersForPair, err := y.GetActiveOrders(pair)
		if err != nil {
			return cancelAllOrdersResponse, err
		}

		allActiveOrders = append(allActiveOrders, activeOrdersForPair)
	}

	for _, activeOrders := range allActiveOrders {
		for key := range activeOrders {
			orderIDInt, err := strconv.ParseInt(key, 10, 64)
			if err != nil {
				return cancelAllOrdersResponse, err
			}

			_, err = y.CancelExistingOrder(orderIDInt)
			if err != nil {
				cancelAllOrdersResponse.OrderStatus[key] = err.Error()
			}
		}
	}

	return cancelAllOrdersResponse, nil
}

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

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

// WithdrawCryptocurrencyFunds returns a withdrawal ID when a withdrawal is
// submitted
func (y *Yobit) WithdrawCryptocurrencyFunds(withdrawRequest exchange.WithdrawRequest) (string, error) {
	resp, err := y.WithdrawCoinsToAddress(withdrawRequest.Currency.String(), withdrawRequest.Amount, withdrawRequest.Address)
	if err != nil {
		return "", err
	}
	if len(resp.Error) > 0 {
		return "", errors.New(resp.Error)
	}
	return "", nil
}

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

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

// GetWebsocket returns a pointer to the exchange websocket
func (y *Yobit) GetWebsocket() (*exchange.Websocket, error) {
	return nil, common.ErrNotYetImplemented
}

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

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