Files
nofx/trader/okx/trader_orders.go
T

949 lines
26 KiB
Go

package okx
import (
"encoding/json"
"fmt"
"nofx/logger"
"nofx/trader/types"
"strconv"
"strings"
)
// OpenLong opens long position
func (t *OKXTrader) OpenLong(symbol string, quantity float64, leverage int) (map[string]interface{}, error) {
// Cancel old orders
t.CancelAllOrders(symbol)
// Set leverage
if err := t.SetLeverage(symbol, leverage); err != nil {
logger.Infof(" ⚠️ Failed to set leverage: %v", err)
}
instId := t.convertSymbol(symbol)
// Get instrument info and calculate contract size
inst, err := t.getInstrument(symbol)
if err != nil {
return nil, fmt.Errorf("failed to get instrument info: %w", err)
}
// OKX uses contract count, need to convert quantity (in base asset) to contract count
// sz = quantity / ctVal (number of contracts = asset amount / asset per contract)
sz := quantity / inst.CtVal
szStr := t.formatSize(sz, inst)
logger.Infof(" 📊 OKX OpenLong: quantity=%.6f, ctVal=%.6f, contracts=%.2f", quantity, inst.CtVal, sz)
// Check max market order size limit
if inst.MaxMktSz > 0 && sz > inst.MaxMktSz {
logger.Infof(" ⚠️ OKX market order size %.2f exceeds max %.2f, reducing to max", sz, inst.MaxMktSz)
sz = inst.MaxMktSz
szStr = t.formatSize(sz, inst)
}
marginMode := t.marginMode()
body := map[string]interface{}{
"instId": instId,
"tdMode": marginMode,
"side": "buy",
"posSide": "long",
"ordType": "market",
"sz": szStr,
"clOrdId": genOkxClOrdID(),
"tag": okxTag,
}
data, err := t.doRequest("POST", okxOrderPath, body)
if err != nil {
return nil, fmt.Errorf("failed to open long position: %w", err)
}
var orders []struct {
OrdId string `json:"ordId"`
ClOrdId string `json:"clOrdId"`
SCode string `json:"sCode"`
SMsg string `json:"sMsg"`
}
if err := json.Unmarshal(data, &orders); err != nil {
return nil, fmt.Errorf("failed to parse order response: %w", err)
}
if len(orders) == 0 || orders[0].SCode != "0" {
msg := "unknown error"
if len(orders) > 0 {
msg = orders[0].SMsg
}
return nil, fmt.Errorf("failed to open long position: %s", msg)
}
logger.Infof("✓ OKX opened long position successfully: %s size: %s", symbol, szStr)
logger.Infof(" Order ID: %s", orders[0].OrdId)
return map[string]interface{}{
"orderId": orders[0].OrdId,
"symbol": symbol,
"status": "FILLED",
}, nil
}
// OpenShort opens short position
func (t *OKXTrader) OpenShort(symbol string, quantity float64, leverage int) (map[string]interface{}, error) {
// Cancel old orders
t.CancelAllOrders(symbol)
// Set leverage
if err := t.SetLeverage(symbol, leverage); err != nil {
logger.Infof(" ⚠️ Failed to set leverage: %v", err)
}
instId := t.convertSymbol(symbol)
// Get instrument info and calculate contract size
inst, err := t.getInstrument(symbol)
if err != nil {
return nil, fmt.Errorf("failed to get instrument info: %w", err)
}
// OKX uses contract count, need to convert quantity (in base asset) to contract count
// sz = quantity / ctVal (number of contracts = asset amount / asset per contract)
sz := quantity / inst.CtVal
szStr := t.formatSize(sz, inst)
logger.Infof(" 📊 OKX OpenShort: quantity=%.6f, ctVal=%.6f, contracts=%.2f", quantity, inst.CtVal, sz)
// Check max market order size limit
if inst.MaxMktSz > 0 && sz > inst.MaxMktSz {
logger.Infof(" ⚠️ OKX market order size %.2f exceeds max %.2f, reducing to max", sz, inst.MaxMktSz)
sz = inst.MaxMktSz
szStr = t.formatSize(sz, inst)
}
marginMode := t.marginMode()
body := map[string]interface{}{
"instId": instId,
"tdMode": marginMode,
"side": "sell",
"posSide": "short",
"ordType": "market",
"sz": szStr,
"clOrdId": genOkxClOrdID(),
"tag": okxTag,
}
data, err := t.doRequest("POST", okxOrderPath, body)
if err != nil {
return nil, fmt.Errorf("failed to open short position: %w", err)
}
var orders []struct {
OrdId string `json:"ordId"`
ClOrdId string `json:"clOrdId"`
SCode string `json:"sCode"`
SMsg string `json:"sMsg"`
}
if err := json.Unmarshal(data, &orders); err != nil {
return nil, fmt.Errorf("failed to parse order response: %w", err)
}
if len(orders) == 0 || orders[0].SCode != "0" {
msg := "unknown error"
if len(orders) > 0 {
msg = orders[0].SMsg
}
return nil, fmt.Errorf("failed to open short position: %s", msg)
}
logger.Infof("✓ OKX opened short position successfully: %s size: %s", symbol, szStr)
logger.Infof(" Order ID: %s", orders[0].OrdId)
return map[string]interface{}{
"orderId": orders[0].OrdId,
"symbol": symbol,
"status": "FILLED",
}, nil
}
// CloseLong closes long position
func (t *OKXTrader) CloseLong(symbol string, quantity float64) (map[string]interface{}, error) {
instId := t.convertSymbol(symbol)
// Get instrument info for contract conversion
inst, err := t.getInstrument(symbol)
if err != nil {
return nil, fmt.Errorf("failed to get instrument info: %w", err)
}
// Invalidate position cache and get fresh positions
t.InvalidatePositionCache()
positions, err := t.GetPositions()
if err != nil {
return nil, fmt.Errorf("failed to get positions: %w", err)
}
// Find actual position from exchange
var actualQty float64
var posFound bool
var posMgnMode string = "cross" // Default to cross margin
logger.Infof("🔍 OKX CloseLong: searching for symbol=%s in %d positions", symbol, len(positions))
for _, pos := range positions {
logger.Infof("🔍 OKX position: symbol=%v, side=%v, positionAmt=%v, mgnMode=%v", pos["symbol"], pos["side"], pos["positionAmt"], pos["mgnMode"])
if pos["symbol"] == symbol {
side := pos["side"].(string)
// In net_mode, "long" means positive position
// In dual mode, check explicit "long" side
if side == "long" || (t.positionMode == "net_mode" && side == "long") {
actualQty = pos["positionAmt"].(float64)
posFound = true
if mgnMode, ok := pos["mgnMode"].(string); ok && mgnMode != "" {
posMgnMode = mgnMode
}
logger.Infof("🔍 OKX CloseLong: found matching position! qty=%.6f, mgnMode=%s", actualQty, posMgnMode)
break
}
}
}
if !posFound || actualQty == 0 {
logger.Infof("🔍 OKX CloseLong: NO position found for %s LONG", symbol)
return map[string]interface{}{
"status": "NO_POSITION",
"message": fmt.Sprintf("No long position found for %s on OKX", symbol),
}, nil
}
// Use actual quantity from exchange (more accurate than passed quantity)
if quantity == 0 || quantity > actualQty {
quantity = actualQty
}
// Convert quantity (base asset) to contract count
// contracts = quantity / ctVal
contracts := quantity / inst.CtVal
szStr := t.formatSize(contracts, inst)
logger.Infof("🔻 OKX close long: symbol=%s, instId=%s, quantity=%.6f, ctVal=%.6f, contracts=%.2f, szStr=%s, posMode=%s, mgnMode=%s",
symbol, instId, quantity, inst.CtVal, contracts, szStr, t.positionMode, posMgnMode)
body := map[string]interface{}{
"instId": instId,
"tdMode": posMgnMode, // Use position's actual margin mode (cross or isolated)
"side": "sell",
"ordType": "market",
"sz": szStr,
"clOrdId": genOkxClOrdID(),
"tag": okxTag,
}
// Only add posSide in dual mode (long_short_mode)
if t.positionMode == "long_short_mode" {
body["posSide"] = "long"
}
data, err := t.doRequest("POST", okxOrderPath, body)
if err != nil {
return nil, fmt.Errorf("failed to close long position: %w", err)
}
var orders []struct {
OrdId string `json:"ordId"`
SCode string `json:"sCode"`
SMsg string `json:"sMsg"`
}
if err := json.Unmarshal(data, &orders); err != nil {
return nil, err
}
if len(orders) == 0 || orders[0].SCode != "0" {
msg := "unknown error"
if len(orders) > 0 {
msg = orders[0].SMsg
}
return nil, fmt.Errorf("failed to close long position: %s", msg)
}
logger.Infof("✓ OKX closed long position successfully: %s", symbol)
// Cancel pending orders after closing position
t.CancelAllOrders(symbol)
return map[string]interface{}{
"orderId": orders[0].OrdId,
"symbol": symbol,
"status": "FILLED",
}, nil
}
// CloseShort closes short position
func (t *OKXTrader) CloseShort(symbol string, quantity float64) (map[string]interface{}, error) {
instId := t.convertSymbol(symbol)
// Get instrument info for contract conversion
inst, err := t.getInstrument(symbol)
if err != nil {
return nil, fmt.Errorf("failed to get instrument info: %w", err)
}
// Invalidate position cache and get fresh positions
t.InvalidatePositionCache()
positions, err := t.GetPositions()
if err != nil {
return nil, fmt.Errorf("failed to get positions: %w", err)
}
// Find actual position from exchange
var actualQty float64
var posFound bool
var posMgnMode string = "cross" // Default to cross margin
logger.Infof("🔍 OKX CloseShort searching positions: symbol=%s, current position count=%d", symbol, len(positions))
for _, pos := range positions {
logger.Infof("🔍 OKX position: symbol=%v, side=%v, positionAmt=%v, mgnMode=%v",
pos["symbol"], pos["side"], pos["positionAmt"], pos["mgnMode"])
if pos["symbol"] == symbol && pos["side"] == "short" {
actualQty = pos["positionAmt"].(float64)
posFound = true
if mgnMode, ok := pos["mgnMode"].(string); ok && mgnMode != "" {
posMgnMode = mgnMode
}
logger.Infof("🔍 OKX found short position: quantity=%f (base asset), mgnMode=%s", actualQty, posMgnMode)
break
}
}
if !posFound || actualQty == 0 {
return map[string]interface{}{
"status": "NO_POSITION",
"message": fmt.Sprintf("No short position found for %s on OKX", symbol),
}, nil
}
// Use actual quantity from exchange (more accurate than passed quantity)
if quantity == 0 || quantity > actualQty {
quantity = actualQty
}
// Ensure quantity is positive (OKX sz parameter must be positive)
if quantity < 0 {
quantity = -quantity
}
// Convert quantity (base asset) to contract count
// contracts = quantity / ctVal
contracts := quantity / inst.CtVal
szStr := t.formatSize(contracts, inst)
logger.Infof("🔻 OKX close short: symbol=%s, quantity=%.6f, ctVal=%.6f, contracts=%.2f, szStr=%s, posMode=%s, mgnMode=%s",
symbol, quantity, inst.CtVal, contracts, szStr, t.positionMode, posMgnMode)
body := map[string]interface{}{
"instId": instId,
"tdMode": posMgnMode, // Use position's actual margin mode (cross or isolated)
"side": "buy",
"ordType": "market",
"sz": szStr,
"clOrdId": genOkxClOrdID(),
"tag": okxTag,
}
// Only add posSide in dual mode (long_short_mode)
if t.positionMode == "long_short_mode" {
body["posSide"] = "short"
}
logger.Infof("🔻 OKX close short request body: %+v", body)
data, err := t.doRequest("POST", okxOrderPath, body)
if err != nil {
return nil, fmt.Errorf("failed to close short position: %w", err)
}
var orders []struct {
OrdId string `json:"ordId"`
SCode string `json:"sCode"`
SMsg string `json:"sMsg"`
}
if err := json.Unmarshal(data, &orders); err != nil {
return nil, err
}
if len(orders) == 0 || orders[0].SCode != "0" {
msg := "unknown error"
if len(orders) > 0 {
msg = fmt.Sprintf("sCode=%s, sMsg=%s", orders[0].SCode, orders[0].SMsg)
}
logger.Infof("❌ OKX failed to close short position: %s, response: %s", msg, string(data))
return nil, fmt.Errorf("failed to close short position: %s", msg)
}
logger.Infof("✓ OKX closed short position successfully: %s, ordId=%s", symbol, orders[0].OrdId)
// Cancel pending orders after closing position
t.CancelAllOrders(symbol)
return map[string]interface{}{
"orderId": orders[0].OrdId,
"symbol": symbol,
"status": "FILLED",
}, nil
}
// SetStopLoss sets stop loss order
func (t *OKXTrader) SetStopLoss(symbol string, positionSide string, quantity, stopPrice float64) error {
instId := t.convertSymbol(symbol)
// Get instrument info
inst, err := t.getInstrument(symbol)
if err != nil {
return fmt.Errorf("failed to get instrument info: %w", err)
}
// Calculate contract size: quantity (in base asset) / ctVal (asset per contract)
sz := quantity / inst.CtVal
szStr := t.formatSize(sz, inst)
// Determine direction
side := "sell"
posSide := "long"
if strings.ToUpper(positionSide) == "SHORT" {
side = "buy"
posSide = "short"
}
marginMode := t.marginMode()
body := map[string]interface{}{
"instId": instId,
"tdMode": marginMode,
"side": side,
"posSide": posSide,
"ordType": "conditional",
"sz": szStr,
"slTriggerPx": fmt.Sprintf("%.8f", stopPrice),
"slOrdPx": "-1", // Market price
"tag": okxTag,
}
_, err = t.doRequest("POST", okxAlgoOrderPath, body)
if err != nil {
return fmt.Errorf("failed to set stop loss: %w", err)
}
logger.Infof(" Stop loss price set: %.4f", stopPrice)
return nil
}
// SetTakeProfit sets take profit order
func (t *OKXTrader) SetTakeProfit(symbol string, positionSide string, quantity, takeProfitPrice float64) error {
instId := t.convertSymbol(symbol)
// Get instrument info
inst, err := t.getInstrument(symbol)
if err != nil {
return fmt.Errorf("failed to get instrument info: %w", err)
}
// Calculate contract size: quantity (in base asset) / ctVal (asset per contract)
sz := quantity / inst.CtVal
szStr := t.formatSize(sz, inst)
// Determine direction
side := "sell"
posSide := "long"
if strings.ToUpper(positionSide) == "SHORT" {
side = "buy"
posSide = "short"
}
marginMode := t.marginMode()
body := map[string]interface{}{
"instId": instId,
"tdMode": marginMode,
"side": side,
"posSide": posSide,
"ordType": "conditional",
"sz": szStr,
"tpTriggerPx": fmt.Sprintf("%.8f", takeProfitPrice),
"tpOrdPx": "-1", // Market price
"tag": okxTag,
}
_, err = t.doRequest("POST", okxAlgoOrderPath, body)
if err != nil {
return fmt.Errorf("failed to set take profit: %w", err)
}
logger.Infof(" Take profit price set: %.4f", takeProfitPrice)
return nil
}
// CancelStopLossOrders cancels stop loss orders
func (t *OKXTrader) CancelStopLossOrders(symbol string) error {
return t.cancelAlgoOrders(symbol, "sl")
}
// CancelTakeProfitOrders cancels take profit orders
func (t *OKXTrader) CancelTakeProfitOrders(symbol string) error {
return t.cancelAlgoOrders(symbol, "tp")
}
// cancelAlgoOrders cancels algo orders
func (t *OKXTrader) cancelAlgoOrders(symbol string, orderType string) error {
instId := t.convertSymbol(symbol)
// Get pending algo orders
path := fmt.Sprintf("%s?instType=SWAP&instId=%s&ordType=conditional", okxAlgoPendingPath, instId)
data, err := t.doRequest("GET", path, nil)
if err != nil {
return err
}
var orders []struct {
AlgoId string `json:"algoId"`
InstId string `json:"instId"`
}
if err := json.Unmarshal(data, &orders); err != nil {
return err
}
canceledCount := 0
for _, order := range orders {
body := []map[string]interface{}{
{
"algoId": order.AlgoId,
"instId": order.InstId,
},
}
_, err := t.doRequest("POST", okxCancelAlgoPath, body)
if err != nil {
logger.Infof(" ⚠️ Failed to cancel algo order: %v", err)
continue
}
canceledCount++
}
if canceledCount > 0 {
logger.Infof(" ✓ Canceled %d algo orders for %s", canceledCount, symbol)
}
return nil
}
// CancelAllOrders cancels all pending orders
func (t *OKXTrader) CancelAllOrders(symbol string) error {
instId := t.convertSymbol(symbol)
// Get pending orders
path := fmt.Sprintf("%s?instType=SWAP&instId=%s", okxPendingOrdersPath, instId)
data, err := t.doRequest("GET", path, nil)
if err != nil {
return err
}
var orders []struct {
OrdId string `json:"ordId"`
InstId string `json:"instId"`
}
if err := json.Unmarshal(data, &orders); err != nil {
return err
}
// Batch cancel
for _, order := range orders {
body := map[string]interface{}{
"instId": order.InstId,
"ordId": order.OrdId,
}
t.doRequest("POST", okxCancelOrderPath, body)
}
// Also cancel algo orders
t.cancelAlgoOrders(symbol, "")
if len(orders) > 0 {
logger.Infof(" ✓ Canceled all pending orders for %s", symbol)
}
return nil
}
// CancelStopOrders cancels stop loss and take profit orders
func (t *OKXTrader) CancelStopOrders(symbol string) error {
return t.cancelAlgoOrders(symbol, "")
}
// GetOrderStatus gets order status
func (t *OKXTrader) GetOrderStatus(symbol string, orderID string) (map[string]interface{}, error) {
instId := t.convertSymbol(symbol)
path := fmt.Sprintf("/api/v5/trade/order?instId=%s&ordId=%s", instId, orderID)
data, err := t.doRequest("GET", path, nil)
if err != nil {
return nil, fmt.Errorf("failed to get order status: %w", err)
}
var orders []struct {
OrdId string `json:"ordId"`
State string `json:"state"`
AvgPx string `json:"avgPx"`
AccFillSz string `json:"accFillSz"`
Fee string `json:"fee"`
Side string `json:"side"`
OrdType string `json:"ordType"`
CTime string `json:"cTime"`
UTime string `json:"uTime"`
}
if err := json.Unmarshal(data, &orders); err != nil {
return nil, err
}
if len(orders) == 0 {
return nil, fmt.Errorf("order not found")
}
order := orders[0]
avgPrice, _ := strconv.ParseFloat(order.AvgPx, 64)
fillSz, _ := strconv.ParseFloat(order.AccFillSz, 64) // This is in contracts
fee, _ := strconv.ParseFloat(order.Fee, 64)
cTime, _ := strconv.ParseInt(order.CTime, 10, 64)
uTime, _ := strconv.ParseInt(order.UTime, 10, 64)
// Convert contract count to base asset quantity
// executedQty = contracts * ctVal
executedQty := fillSz
inst, err := t.getInstrument(symbol)
if err == nil && inst.CtVal > 0 {
executedQty = fillSz * inst.CtVal
logger.Debugf(" 📊 OKX order %s: fillSz(contracts)=%.4f, ctVal=%.6f, executedQty=%.6f", orderID, fillSz, inst.CtVal, executedQty)
}
// Status mapping
statusMap := map[string]string{
"filled": "FILLED",
"live": "NEW",
"partially_filled": "PARTIALLY_FILLED",
"canceled": "CANCELED",
}
status := statusMap[order.State]
if status == "" {
status = order.State
}
return map[string]interface{}{
"orderId": order.OrdId,
"symbol": symbol,
"status": status,
"avgPrice": avgPrice,
"executedQty": executedQty,
"side": order.Side,
"type": order.OrdType,
"time": cTime,
"updateTime": uTime,
"commission": -fee, // OKX returns negative value
}, nil
}
// GetOpenOrders gets all open/pending orders for a symbol
func (t *OKXTrader) GetOpenOrders(symbol string) ([]types.OpenOrder, error) {
instId := t.convertSymbol(symbol)
var result []types.OpenOrder
// 1. Get pending limit orders
path := fmt.Sprintf("%s?instId=%s&instType=SWAP", okxPendingOrdersPath, instId)
data, err := t.doRequest("GET", path, nil)
if err != nil {
logger.Warnf("[OKX] Failed to get pending orders: %v", err)
}
if err == nil && data != nil {
var orders []struct {
OrdId string `json:"ordId"`
InstId string `json:"instId"`
Side string `json:"side"` // buy/sell
PosSide string `json:"posSide"` // long/short/net
OrdType string `json:"ordType"` // limit/market/post_only
Px string `json:"px"` // price
Sz string `json:"sz"` // size
State string `json:"state"` // live/partially_filled
}
if err := json.Unmarshal(data, &orders); err == nil {
for _, order := range orders {
price, _ := strconv.ParseFloat(order.Px, 64)
quantity, _ := strconv.ParseFloat(order.Sz, 64)
// Convert OKX side to standard format
side := strings.ToUpper(order.Side)
positionSide := strings.ToUpper(order.PosSide)
if positionSide == "NET" {
positionSide = "BOTH"
}
result = append(result, types.OpenOrder{
OrderID: order.OrdId,
Symbol: symbol,
Side: side,
PositionSide: positionSide,
Type: strings.ToUpper(order.OrdType),
Price: price,
StopPrice: 0,
Quantity: quantity,
Status: "NEW",
})
}
}
}
// 2. Get pending algo orders (stop-loss/take-profit)
// OKX requires ordType parameter for algo orders API
algoPath := fmt.Sprintf("%s?instId=%s&instType=SWAP&ordType=conditional", okxAlgoPendingPath, instId)
algoData, err := t.doRequest("GET", algoPath, nil)
if err != nil {
logger.Warnf("[OKX] Failed to get algo orders: %v", err)
}
if err == nil && algoData != nil {
var algoOrders []struct {
AlgoId string `json:"algoId"`
InstId string `json:"instId"`
Side string `json:"side"`
PosSide string `json:"posSide"`
OrdType string `json:"ordType"` // conditional/oco/trigger
TriggerPx string `json:"triggerPx"`
SlTriggerPx string `json:"slTriggerPx"` // Stop loss trigger price
TpTriggerPx string `json:"tpTriggerPx"` // Take profit trigger price
Sz string `json:"sz"`
State string `json:"state"`
}
if err := json.Unmarshal(algoData, &algoOrders); err == nil {
for _, order := range algoOrders {
quantity, _ := strconv.ParseFloat(order.Sz, 64)
side := strings.ToUpper(order.Side)
positionSide := strings.ToUpper(order.PosSide)
if positionSide == "NET" {
positionSide = "BOTH"
}
// Check for stop loss order (slTriggerPx is set)
if order.SlTriggerPx != "" {
slPrice, _ := strconv.ParseFloat(order.SlTriggerPx, 64)
if slPrice > 0 {
result = append(result, types.OpenOrder{
OrderID: order.AlgoId + "_sl",
Symbol: symbol,
Side: side,
PositionSide: positionSide,
Type: "STOP_MARKET",
Price: 0,
StopPrice: slPrice,
Quantity: quantity,
Status: "NEW",
})
}
}
// Check for take profit order (tpTriggerPx is set)
if order.TpTriggerPx != "" {
tpPrice, _ := strconv.ParseFloat(order.TpTriggerPx, 64)
if tpPrice > 0 {
result = append(result, types.OpenOrder{
OrderID: order.AlgoId + "_tp",
Symbol: symbol,
Side: side,
PositionSide: positionSide,
Type: "TAKE_PROFIT_MARKET",
Price: 0,
StopPrice: tpPrice,
Quantity: quantity,
Status: "NEW",
})
}
}
// Fallback for trigger orders (triggerPx is set)
if order.TriggerPx != "" && order.SlTriggerPx == "" && order.TpTriggerPx == "" {
triggerPrice, _ := strconv.ParseFloat(order.TriggerPx, 64)
if triggerPrice > 0 {
result = append(result, types.OpenOrder{
OrderID: order.AlgoId,
Symbol: symbol,
Side: side,
PositionSide: positionSide,
Type: "STOP_MARKET",
Price: 0,
StopPrice: triggerPrice,
Quantity: quantity,
Status: "NEW",
})
}
}
}
}
}
logger.Infof("✓ OKX GetOpenOrders: found %d open orders for %s", len(result), symbol)
return result, nil
}
// PlaceLimitOrder places a limit order for grid trading
// Implements GridTrader interface
func (t *OKXTrader) PlaceLimitOrder(req *types.LimitOrderRequest) (*types.LimitOrderResult, error) {
instId := t.convertSymbol(req.Symbol)
// Get instrument info
inst, err := t.getInstrument(req.Symbol)
if err != nil {
return nil, fmt.Errorf("failed to get instrument info: %w", err)
}
// Set leverage if specified
if req.Leverage > 0 {
if err := t.SetLeverage(req.Symbol, req.Leverage); err != nil {
logger.Warnf("[OKX] Failed to set leverage: %v", err)
}
}
// Convert quantity to contract size
sz := req.Quantity / inst.CtVal
szStr := t.formatSize(sz, inst)
// Determine side and position side
side := "buy"
posSide := "long"
if req.Side == "SELL" {
side = "sell"
posSide = "short"
}
marginMode := t.marginMode()
body := map[string]interface{}{
"instId": instId,
"tdMode": marginMode,
"side": side,
"posSide": posSide,
"ordType": "limit",
"sz": szStr,
"px": fmt.Sprintf("%.8f", req.Price),
"clOrdId": genOkxClOrdID(),
"tag": okxTag,
}
// Add reduce only if specified
if req.ReduceOnly {
body["reduceOnly"] = true
}
logger.Infof("[OKX] PlaceLimitOrder: %s %s @ %.4f, sz=%s", instId, side, req.Price, szStr)
data, err := t.doRequest("POST", okxOrderPath, body)
if err != nil {
return nil, fmt.Errorf("failed to place limit order: %w", err)
}
var orders []struct {
OrdId string `json:"ordId"`
ClOrdId string `json:"clOrdId"`
SCode string `json:"sCode"`
SMsg string `json:"sMsg"`
}
if err := json.Unmarshal(data, &orders); err != nil {
return nil, fmt.Errorf("failed to parse order response: %w", err)
}
if len(orders) == 0 {
return nil, fmt.Errorf("empty order response")
}
if orders[0].SCode != "0" {
return nil, fmt.Errorf("OKX order failed: %s", orders[0].SMsg)
}
logger.Infof("✓ [OKX] Limit order placed: %s %s @ %.4f, orderID=%s",
instId, side, req.Price, orders[0].OrdId)
return &types.LimitOrderResult{
OrderID: orders[0].OrdId,
ClientID: orders[0].ClOrdId,
Symbol: req.Symbol,
Side: req.Side,
PositionSide: req.PositionSide,
Price: req.Price,
Quantity: req.Quantity,
Status: "NEW",
}, nil
}
// CancelOrder cancels a specific order by ID
// Implements GridTrader interface
func (t *OKXTrader) CancelOrder(symbol, orderID string) error {
instId := t.convertSymbol(symbol)
body := map[string]interface{}{
"instId": instId,
"ordId": orderID,
}
_, err := t.doRequest("POST", "/api/v5/trade/cancel-order", body)
if err != nil {
return fmt.Errorf("failed to cancel order: %w", err)
}
logger.Infof("✓ [OKX] Order cancelled: %s %s", symbol, orderID)
return nil
}
// GetOrderBook gets the order book for a symbol
// Implements GridTrader interface
func (t *OKXTrader) GetOrderBook(symbol string, depth int) (bids, asks [][]float64, err error) {
instId := t.convertSymbol(symbol)
path := fmt.Sprintf("/api/v5/market/books?instId=%s&sz=%d", instId, depth)
data, err := t.doRequest("GET", path, nil)
if err != nil {
return nil, nil, fmt.Errorf("failed to get order book: %w", err)
}
var result []struct {
Bids [][]string `json:"bids"`
Asks [][]string `json:"asks"`
}
if err := json.Unmarshal(data, &result); err != nil {
return nil, nil, fmt.Errorf("failed to parse order book: %w", err)
}
if len(result) == 0 {
return nil, nil, nil
}
// Parse bids
for _, b := range result[0].Bids {
if len(b) >= 2 {
price, _ := strconv.ParseFloat(b[0], 64)
qty, _ := strconv.ParseFloat(b[1], 64)
bids = append(bids, []float64{price, qty})
}
}
// Parse asks
for _, a := range result[0].Asks {
if len(a) >= 2 {
price, _ := strconv.ParseFloat(a[0], 64)
qty, _ := strconv.ParseFloat(a[1], 64)
asks = append(asks, []float64{price, qty})
}
}
return bids, asks, nil
}