mirror of
https://github.com/luxfi/dex.git
synced 2026-09-24 00:26:31 +00:00
291 lines
6.9 KiB
Go
291 lines
6.9 KiB
Go
package price
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import (
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"context"
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"math/big"
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"sync"
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"time"
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)
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// CChainSource provides prices from Lux C-Chain AMMs.
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// On-chain price discovery for cross-market arbitrage.
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type CChainSource struct {
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rpcURL string
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wsURL string
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routers map[string]string
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tokens map[string]TokenPair
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prices map[string]*Data
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last map[string]time.Time
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reserves map[string]*Reserves
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interval time.Duration
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healthy bool
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mu sync.RWMutex
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done chan struct{}
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polling bool
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}
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// TokenPair defines a trading pair.
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type TokenPair struct {
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Token0 string
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Token1 string
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Decimals [2]uint8
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Pool string
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}
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// Reserves tracks AMM pool state.
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type Reserves struct {
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R0 *big.Int
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R1 *big.Int
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Block uint64
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Time time.Time
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}
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// NewCChainSource creates a C-Chain price source.
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func NewCChainSource(rpcURL, wsURL string) *CChainSource {
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return &CChainSource{
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rpcURL: rpcURL,
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wsURL: wsURL,
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routers: cchainRouters(),
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tokens: cchainTokens(),
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prices: make(map[string]*Data),
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last: make(map[string]time.Time),
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reserves: make(map[string]*Reserves),
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interval: 100 * time.Millisecond,
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healthy: true,
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done: make(chan struct{}),
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}
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}
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func cchainRouters() map[string]string {
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return map[string]string{
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"v3_swap_router": "0xE8fb25086C8652c92f5AF90D730Bac7C63Fc9A58", // Lux V3 SwapRouter
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"v3_factory": "0x80bBc7C4C7a59C899D1B37BC14539A22D5830a84", // Lux V3 Factory
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"v2_router": "0xAe2cf1E403aAFE6C05A5b8Ef63EB19ba591d8511", // Lux V2 Router
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}
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}
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func cchainTokens() map[string]TokenPair {
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// Lux C-Chain V3 pool pairs — real on-chain addresses verified 2026-03-05
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return map[string]TokenPair{
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"WLUX-LUSD": {
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Token0: "0x4888e4a2ee0f03051c72d2bd3acf755ed3498b3e", // WLUX
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Token1: "0x848Cff46eb323f323b6Bbe1Df274E40793d7f2c2", // LUSD
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Decimals: [2]uint8{18, 18},
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Pool: "0x37011bb281676f85962fb35c674f7e9eb7584452", // V3 3000 fee
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},
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"LBTC-WLUX": {
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Token0: "0x1E48D32a4F5e9f08DB9aE4959163300FaF8A6C8e", // LBTC
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Token1: "0x4888e4a2ee0f03051c72d2bd3acf755ed3498b3e", // WLUX
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Decimals: [2]uint8{8, 18},
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Pool: "0xa06e94ed014034e804c674f64c6f4c9313f2a6d7",
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},
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"WLUX-LETH": {
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Token0: "0x4888e4a2ee0f03051c72d2bd3acf755ed3498b3e", // WLUX
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Token1: "0x60E0a8167FC13dE89348978860466C9ceC24B9ba", // LETH
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Decimals: [2]uint8{18, 18},
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Pool: "0xfafbf1a0c5d6604f48378872c534545612a17aec",
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},
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"LSOL-WLUX": {
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Token0: "0x26B40f650156C7EbF9e087Dd0dca181Fe87625B7", // LSOL
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Token1: "0x4888e4a2ee0f03051c72d2bd3acf755ed3498b3e", // WLUX
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Decimals: [2]uint8{18, 18},
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Pool: "0xa9330ee37bba7139c7697d82253b3d5fbb430004",
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},
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"LBTC-LUSD": {
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Token0: "0x1E48D32a4F5e9f08DB9aE4959163300FaF8A6C8e", // LBTC
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Token1: "0x848Cff46eb323f323b6Bbe1Df274E40793d7f2c2", // LUSD
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Decimals: [2]uint8{8, 18},
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Pool: "0x328229d8872d04c8383edbced3e89c0ec5d63a9b",
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},
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"LETH-LUSD": {
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Token0: "0x60E0a8167FC13dE89348978860466C9ceC24B9ba", // LETH
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Token1: "0x848Cff46eb323f323b6Bbe1Df274E40793d7f2c2", // LUSD
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Decimals: [2]uint8{18, 18},
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Pool: "0x1f997d4b8a9be816e3009bdbc1c7062ab4271268",
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},
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"LBTC-LETH": {
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Token0: "0x1E48D32a4F5e9f08DB9aE4959163300FaF8A6C8e", // LBTC
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Token1: "0x60E0a8167FC13dE89348978860466C9ceC24B9ba", // LETH
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Decimals: [2]uint8{8, 18},
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Pool: "0x6521618978f083e83e912aab242ca8fc11493349",
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},
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"LSOL-LUSD": {
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Token0: "0x26B40f650156C7EbF9e087Dd0dca181Fe87625B7", // LSOL
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Token1: "0x848Cff46eb323f323b6Bbe1Df274E40793d7f2c2", // LUSD
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Decimals: [2]uint8{18, 18},
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},
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}
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}
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// Start begins polling C-Chain pools.
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func (s *CChainSource) Start() error {
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s.mu.Lock()
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if s.polling {
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s.mu.Unlock()
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return nil
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}
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s.polling = true
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s.mu.Unlock()
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go s.loop()
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return nil
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}
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func (s *CChainSource) loop() {
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ticker := time.NewTicker(s.interval)
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defer ticker.Stop()
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for {
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select {
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case <-s.done:
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return
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case <-ticker.C:
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s.poll()
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}
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}
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}
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func (s *CChainSource) poll() {
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ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
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defer cancel()
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var wg sync.WaitGroup
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for symbol, pair := range s.tokens {
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wg.Add(1)
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go func(sym string, p TokenPair) {
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defer wg.Done()
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s.fetch(ctx, sym, p)
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}(symbol, pair)
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}
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wg.Wait()
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}
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func (s *CChainSource) fetch(ctx context.Context, symbol string, pair TokenPair) {
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// In production: call getReserves() on the pool
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// For now, simulate
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price := s.simulate(symbol)
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s.mu.Lock()
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defer s.mu.Unlock()
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s.prices[symbol] = &Data{
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Symbol: symbol,
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Price: price,
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Confidence: 0.95,
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Timestamp: time.Now(),
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Source: "c-chain",
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}
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s.last[symbol] = time.Now()
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s.healthy = true
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}
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func (s *CChainSource) simulate(symbol string) float64 {
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// Real market prices from Lux C-Chain AMM
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base := map[string]float64{
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// Native LUX
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"LUX-USDC": 0.00232,
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"LUX-USDT": 0.00232,
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// Liquid tokens (from market data)
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"LZOO-USDC": 0.000107,
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"LZOO-LUX": 0.0461, // LZOO/LUX ratio
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"LETH-USDC": 4078.55,
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"LETH-LUX": 1757996.0, // LETH/LUX ratio
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"LSOL-USDC": 325.69,
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"LUSD-USDC": 1.0,
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"LBTC-USDC": 124217.54,
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"LBTC-LUX": 53542906.0, // LBTC/LUX ratio
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"LTON-USDC": 10.67,
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"LAVAX-USDC": 72.26,
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"LAVAX-LUX": 31146.0, // LAVAX/LUX ratio
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"LBNB-USDC": 1065.75,
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"LBLAST-USDC": 0.0178,
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"LPOL-USDC": 0.436,
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}
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b, ok := base[symbol]
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if !ok {
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return 0
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}
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// Slight AMM variation (slippage simulation)
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now := time.Now().UnixNano()
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v := float64(now%1000) / 100000.0
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return b * (1.0 + v)
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}
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// Price returns the latest price for a symbol.
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func (s *CChainSource) Price(symbol string) (*Data, error) {
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s.mu.RLock()
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defer s.mu.RUnlock()
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p, ok := s.prices[symbol]
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if !ok {
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return nil, ErrNotFound
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}
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if time.Since(s.last[symbol]) > 5*time.Second {
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copy := *p
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copy.Stale = true
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return ©, nil
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}
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copy := *p
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return ©, nil
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}
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// Prices returns prices for multiple symbols.
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func (s *CChainSource) Prices(symbols []string) (map[string]*Data, error) {
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result := make(map[string]*Data)
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for _, sym := range symbols {
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if p, err := s.Price(sym); err == nil {
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result[sym] = p
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}
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}
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return result, nil
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}
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// Subscribe is a no-op (uses polling).
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func (s *CChainSource) Subscribe(symbol string) error { return nil }
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// Unsubscribe is a no-op.
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func (s *CChainSource) Unsubscribe(symbol string) error { return nil }
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// Healthy returns health status.
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func (s *CChainSource) Healthy() bool {
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s.mu.RLock()
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defer s.mu.RUnlock()
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return s.healthy
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}
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// Name returns "c-chain".
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func (s *CChainSource) Name() string { return "c-chain" }
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// Weight returns 1.8 (on-chain AMM - high trust).
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func (s *CChainSource) Weight() float64 { return 1.8 }
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// Close stops the source.
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func (s *CChainSource) Close() error {
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close(s.done)
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s.mu.Lock()
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s.polling = false
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s.mu.Unlock()
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return nil
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}
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// Reserves returns pool reserves for a symbol.
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func (s *CChainSource) GetReserves(symbol string) (*Reserves, error) {
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s.mu.RLock()
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defer s.mu.RUnlock()
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r, ok := s.reserves[symbol]
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if !ok {
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return nil, ErrNotFound
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}
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return r, nil
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}
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