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feat(gate): complete Gate.io exchange integration with trader refactoring
Gate.io Integration: - Add Gate trader with full Trader interface implementation - Add order_sync.go for background trade synchronization - Fix quantity display (convert contracts to actual tokens via quanto_multiplier) - Fix fill price return in OpenLong/OpenShort/CloseLong/CloseShort - Add Gate-specific CoinAnk K-line data source support - Add Gate to supported exchanges in frontend and backend - Add Gate/KuCoin logo SVG icons Trader Package Refactoring: - Move exchange-specific code into subdirectories (binance/, bybit/, okx/, bitget/, hyperliquid/, aster/, lighter/, gate/) - Create types/ package for shared types to avoid circular dependencies - Move TraderTestSuite to trader/testutil package to avoid import cycles - Update market.GetWithExchange to support exchange-specific data
This commit is contained in:
tinkle-community
154
trader/lighter/types.go
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154
trader/lighter/types.go
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package lighter
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import (
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"fmt"
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"strings"
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"golang.org/x/crypto/sha3"
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)
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// SymbolPrecision Symbol precision information
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type SymbolPrecision struct {
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PricePrecision int
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QuantityPrecision int
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TickSize float64 // Price tick size
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StepSize float64 // Quantity step size
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}
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// AccountBalance Account balance information (Lighter)
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type AccountBalance struct {
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TotalEquity float64 `json:"total_equity"` // Total equity
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AvailableBalance float64 `json:"available_balance"` // Available balance
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MarginUsed float64 `json:"margin_used"` // Used margin
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UnrealizedPnL float64 `json:"unrealized_pnl"` // Unrealized PnL
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MaintenanceMargin float64 `json:"maintenance_margin"` // Maintenance margin
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}
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// Position Position information (Lighter)
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type Position struct {
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Symbol string `json:"symbol"` // Trading pair
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Side string `json:"side"` // "long" or "short"
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Size float64 `json:"size"` // Position size
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EntryPrice float64 `json:"entry_price"` // Average entry price
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MarkPrice float64 `json:"mark_price"` // Mark price
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LiquidationPrice float64 `json:"liquidation_price"` // Liquidation price
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UnrealizedPnL float64 `json:"unrealized_pnl"` // Unrealized PnL
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Leverage float64 `json:"leverage"` // Leverage multiplier
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MarginUsed float64 `json:"margin_used"` // Used margin
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}
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// CreateOrderRequest Create order request (Lighter)
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type CreateOrderRequest struct {
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Symbol string `json:"symbol"` // Trading pair
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Side string `json:"side"` // "buy" or "sell"
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OrderType string `json:"order_type"` // "market" or "limit"
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Quantity float64 `json:"quantity"` // Quantity
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Price float64 `json:"price"` // Price (required for limit orders)
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ReduceOnly bool `json:"reduce_only"` // Reduce-only flag
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TimeInForce string `json:"time_in_force"` // "GTC", "IOC", "FOK"
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PostOnly bool `json:"post_only"` // Post-only (maker only)
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}
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// OrderResponse Order response (Lighter API)
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// Field names must match Lighter API response exactly
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type OrderResponse struct {
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OrderID string `json:"order_id"`
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OrderIndex int64 `json:"order_index"`
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MarketIndex int `json:"market_index"`
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Side string `json:"side"` // "bid" or "ask"
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Type string `json:"type"` // "limit", "market", etc.
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IsAsk bool `json:"is_ask"` // true = sell, false = buy
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Price string `json:"price"` // Price as string
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InitialBaseAmount string `json:"initial_base_amount"` // Original quantity
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RemainingBaseAmount string `json:"remaining_base_amount"` // Remaining quantity
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FilledBaseAmount string `json:"filled_base_amount"` // Filled quantity
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Status string `json:"status"` // "open", "filled", "cancelled"
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TriggerPrice string `json:"trigger_price"` // For stop orders
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ReduceOnly bool `json:"reduce_only"`
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Timestamp int64 `json:"timestamp"`
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CreatedAt int64 `json:"created_at"`
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}
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// LighterTradeResponse represents the response from Lighter trades API
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type LighterTradeResponse struct {
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Code int `json:"code"`
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NextCursor string `json:"next_cursor,omitempty"`
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Trades []LighterTrade `json:"trades"`
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}
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// LighterTrade represents a single trade from Lighter API
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// API docs: https://apidocs.lighter.xyz/reference/trades
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type LighterTrade struct {
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TradeID int64 `json:"trade_id"`
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TxHash string `json:"tx_hash"`
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Type string `json:"type"` // "trade", "liquidation", etc
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MarketID int `json:"market_id"` // Need to convert to symbol
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Size string `json:"size"`
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Price string `json:"price"`
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UsdAmount string `json:"usd_amount"`
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AskID int64 `json:"ask_id"`
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BidID int64 `json:"bid_id"`
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AskAccountID int64 `json:"ask_account_id"`
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BidAccountID int64 `json:"bid_account_id"`
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IsMakerAsk bool `json:"is_maker_ask"`
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BlockHeight int64 `json:"block_height"`
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Timestamp int64 `json:"timestamp"`
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TakerFee int64 `json:"taker_fee,omitempty"`
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MakerFee int64 `json:"maker_fee,omitempty"`
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// Position change information - critical for determining open/close
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TakerPositionSizeBefore string `json:"taker_position_size_before"`
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TakerPositionSignChanged bool `json:"taker_position_sign_changed"`
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MakerPositionSizeBefore string `json:"maker_position_size_before"`
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MakerPositionSignChanged bool `json:"maker_position_sign_changed,omitempty"`
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}
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// parseFloat parses a string to float64, returns 0 for empty string
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func parseFloat(s string) (float64, error) {
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if s == "" {
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return 0, nil
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}
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var f float64
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_, err := fmt.Sscanf(s, "%f", &f)
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return f, err
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}
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// ToChecksumAddress converts an Ethereum address to EIP-55 checksum format
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// This is required for Lighter API which is case-sensitive for addresses
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func ToChecksumAddress(address string) string {
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// Remove 0x prefix and convert to lowercase
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addr := strings.ToLower(strings.TrimPrefix(address, "0x"))
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if len(addr) != 40 {
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return address // Return original if invalid length
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}
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// Compute Keccak-256 hash of the lowercase address
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hasher := sha3.NewLegacyKeccak256()
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hasher.Write([]byte(addr))
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hash := hasher.Sum(nil)
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// Build checksum address
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var result strings.Builder
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result.WriteString("0x")
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for i, c := range addr {
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// Get the corresponding nibble from the hash
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// Each byte in hash contains 2 nibbles (4 bits each)
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hashByte := hash[i/2]
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var nibble byte
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if i%2 == 0 {
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nibble = hashByte >> 4 // High nibble
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} else {
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nibble = hashByte & 0x0F // Low nibble
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}
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// If nibble >= 8, uppercase the character (if it's a letter)
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if nibble >= 8 && c >= 'a' && c <= 'f' {
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result.WriteByte(byte(c) - 32) // Convert to uppercase
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} else {
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result.WriteByte(byte(c))
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}
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}
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return result.String()
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}
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