import { Connection, Keypair, PublicKey } from '@solana/web3.js'
import { 
  DriftClient, 
  Wallet,
  OrderType,
  PositionDirection,
  MarketType,
  convertToNumber,
  BASE_PRECISION,
  PRICE_PRECISION,
  QUOTE_PRECISION,
  BN,
  ZERO,
  type PerpPosition,
  type SpotPosition,
  getUserAccountPublicKey,
  DRIFT_PROGRAM_ID
} from '@drift-labs/sdk'

export interface TradeParams {
  symbol: string
  side: 'BUY' | 'SELL'
  amount: number // USD amount
  orderType?: 'MARKET' | 'LIMIT'
  price?: number
  stopLoss?: number
  takeProfit?: number
  stopLossType?: 'PRICE' | 'PERCENTAGE'
  takeProfitType?: 'PRICE' | 'PERCENTAGE'
}

export interface TradeResult {
  success: boolean
  txId?: string
  error?: string
  executedPrice?: number
  executedAmount?: number
  conditionalOrders?: string[]
}

export interface Position {
  symbol: string
  side: 'LONG' | 'SHORT'
  size: number
  entryPrice: number
  markPrice: number
  unrealizedPnl: number
  marketIndex: number
  marketType: 'PERP' | 'SPOT'
}

export interface AccountBalance {
  totalCollateral: number
  freeCollateral: number
  marginRequirement: number
  accountValue: number
  leverage: number
  availableBalance: number
  netUsdValue: number
  unrealizedPnl: number
}

export interface TradeHistory {
  id: string
  symbol: string
  side: 'BUY' | 'SELL'
  amount: number
  price: number
  status: 'FILLED' | 'PENDING' | 'CANCELLED'
  executedAt: string
  pnl?: number
  txId?: string
}

export interface LoginStatus {
  isLoggedIn: boolean
  publicKey: string
  userAccountExists: boolean
  error?: string
}

export class DriftTradingService {
  private connection: Connection
  private wallet: Wallet
  private driftClient: DriftClient | null = null
  private isInitialized = false
  private publicKey: PublicKey

  constructor() {
    const rpcUrl = process.env.SOLANA_RPC_URL || 'https://api.mainnet-beta.solana.com'
    const secret = process.env.SOLANA_PRIVATE_KEY
    if (!secret) throw new Error('Missing SOLANA_PRIVATE_KEY in env')
    
    try {
      const keypair = Keypair.fromSecretKey(Buffer.from(JSON.parse(secret)))
      this.connection = new Connection(rpcUrl, 'confirmed')
      this.wallet = new Wallet(keypair)
      this.publicKey = keypair.publicKey
    } catch (error) {
      throw new Error(`Failed to initialize wallet: ${error}`)
    }
  }

  async login(): Promise<LoginStatus> {
    try {
      console.log('🔧 Starting Drift login process...')
      
      // First, verify the account exists without SDK
      console.log('🔍 Pre-checking user account existence...')
      const userAccountPublicKey = await getUserAccountPublicKey(
        new PublicKey(DRIFT_PROGRAM_ID),
        this.publicKey,
        0
      )
      
      const userAccountInfo = await this.connection.getAccountInfo(userAccountPublicKey)
      if (!userAccountInfo) {
        return {
          isLoggedIn: false,
          publicKey: this.publicKey.toString(),
          userAccountExists: false,
          error: 'User account does not exist. Please initialize your Drift account at app.drift.trade first.'
        }
      }
      
      console.log('✅ User account confirmed to exist')
      
      // Skip SDK subscription entirely and mark as "connected" since account exists
      console.log('🎯 Using direct account access instead of SDK subscription...')
      
      try {
        // Create client but don't subscribe - just for occasional use
        this.driftClient = new DriftClient({
          connection: this.connection,
          wallet: this.wallet,
          env: 'mainnet-beta',
          opts: { 
            commitment: 'confirmed',
            preflightCommitment: 'processed'
          }
        })
        
        // Mark as initialized without subscription
        this.isInitialized = true
        console.log('✅ Drift client created successfully (no subscription needed)')
        
        return {
          isLoggedIn: true,
          publicKey: this.publicKey.toString(),
          userAccountExists: true
        }
        
      } catch (error: any) {
        console.log('⚠️ SDK creation failed, using fallback mode:', error.message)
        
        // Even if SDK fails, we can still show as "connected" since account exists
        this.isInitialized = false
        return {
          isLoggedIn: true, // Account exists, so we're "connected"
          publicKey: this.publicKey.toString(),
          userAccountExists: true,
          error: 'Limited mode: Account verified but SDK unavailable. Basic info only.'
        }
      }
      
    } catch (error: any) {
      console.error('❌ Login failed:', error.message)
      return {
        isLoggedIn: false,
        publicKey: this.publicKey.toString(),
        userAccountExists: false,
        error: `Login failed: ${error.message}`
      }
    }
  }

  private async disconnect(): Promise<void> {
    if (this.driftClient) {
      try {
        await this.driftClient.unsubscribe()
      } catch (error) {
        console.error('Error during disconnect:', error)
      }
      this.driftClient = null
    }
    this.isInitialized = false
  }

  async getAccountBalance(): Promise<AccountBalance> {
    try {
      if (this.isInitialized && this.driftClient) {
        // Subscribe to user account to access balance data
        try {
          console.log('🔍 Subscribing to user account for balance...')
          await this.driftClient.subscribe()
          
          const user = this.driftClient.getUser()
          
          // Get account equity and collateral information using proper SDK methods
          const totalCollateral = convertToNumber(
            user.getTotalCollateral(),
            QUOTE_PRECISION
          )
          
          const freeCollateral = convertToNumber(
            user.getFreeCollateral(),
            QUOTE_PRECISION
          )
          
          // Try to get net USD value using more comprehensive methods
          let calculatedNetUsdValue = totalCollateral
          try {
            // Check if there's a direct method for net USD value or equity
            // Try different possible method names
            let directNetValue = null
            if ('getNetUsdValue' in user) {
              directNetValue = convertToNumber((user as any).getNetUsdValue(), QUOTE_PRECISION)
            } else if ('getEquity' in user) {
              directNetValue = convertToNumber((user as any).getEquity(), QUOTE_PRECISION)
            } else if ('getTotalAccountValue' in user) {
              directNetValue = convertToNumber((user as any).getTotalAccountValue(), QUOTE_PRECISION)
            }
            
            if (directNetValue !== null) {
              calculatedNetUsdValue = directNetValue
              console.log(`📊 Direct net USD value: $${calculatedNetUsdValue.toFixed(2)}`)
            } else {
              console.log('⚠️ No direct net USD method found, will calculate manually')
            }
          } catch (e) {
            console.log('⚠️ Direct net USD method failed:', (e as Error).message)
          }
          
          // Try to get unsettled PnL and funding
          let unsettledBalance = 0
          try {
            // Try different approaches to get unsettled amounts
            if ('getUnsettledPnl' in user) {
              unsettledBalance += convertToNumber((user as any).getUnsettledPnl(), QUOTE_PRECISION)
            }
            if ('getPendingFundingPayments' in user) {
              unsettledBalance += convertToNumber((user as any).getPendingFundingPayments(), QUOTE_PRECISION)
            }
            if (unsettledBalance !== 0) {
              console.log(`📊 Unsettled balance: $${unsettledBalance.toFixed(2)}`)
            }
          } catch (e) {
            console.log('⚠️ Unsettled balance calculation failed:', (e as Error).message)
          }
          
          // Calculate margin requirement using proper method
          let marginRequirement = 0
          try {
            // According to docs, getMarginRequirement requires MarginCategory parameter
            marginRequirement = convertToNumber(
              user.getMarginRequirement('Initial'),
              QUOTE_PRECISION
            )
          } catch {
            // Fallback calculation if the method signature is different
            marginRequirement = Math.max(0, totalCollateral - freeCollateral)
          }
          
          const accountValue = totalCollateral
          const leverage = marginRequirement > 0 ? totalCollateral / marginRequirement : 1
          const availableBalance = freeCollateral

          // Calculate unrealized PnL from all positions
          let totalUnrealizedPnl = 0
          try {
            // Get all perp positions to calculate total unrealized PnL
            const mainMarkets = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] // Check more markets for PnL
            
            for (const marketIndex of mainMarkets) {
              try {
                const position = user.getPerpPosition(marketIndex)
                if (!position || position.baseAssetAmount.isZero()) continue
                
                // Calculate unrealized PnL manually
                const marketData = this.driftClient.getPerpMarketAccount(marketIndex)
                const markPrice = convertToNumber(marketData?.amm.lastMarkPriceTwap || new BN(0), PRICE_PRECISION)
                
                const entryPrice = convertToNumber(position.quoteEntryAmount.abs(), PRICE_PRECISION) / 
                                  convertToNumber(position.baseAssetAmount.abs(), BASE_PRECISION)
                const size = convertToNumber(position.baseAssetAmount.abs(), BASE_PRECISION)
                const isLong = position.baseAssetAmount.gt(new BN(0))
                
                const unrealizedPnl = isLong ? 
                  (markPrice - entryPrice) * size : 
                  (entryPrice - markPrice) * size
                
                totalUnrealizedPnl += unrealizedPnl
              } catch (e) {
                // Skip markets that don't exist
                continue
              }
            }
          } catch (e) {
            console.warn('Could not calculate unrealized PnL:', e)
          }

          // Net USD Value calculation with enhanced accuracy
          let finalNetUsdValue = calculatedNetUsdValue
          
          // If we got a direct value, use it, otherwise calculate manually
          if (calculatedNetUsdValue === totalCollateral) {
            // Manual calculation: Total Collateral + Unrealized PnL + Unsettled
            finalNetUsdValue = totalCollateral + totalUnrealizedPnl + unsettledBalance
            console.log(`📊 Manual calculation: Collateral($${totalCollateral.toFixed(2)}) + PnL($${totalUnrealizedPnl.toFixed(2)}) + Unsettled($${unsettledBalance.toFixed(2)}) = $${finalNetUsdValue.toFixed(2)}`)
          }

          console.log(`💰 Account balance: $${accountValue.toFixed(2)}, Net USD: $${finalNetUsdValue.toFixed(2)}, PnL: $${totalUnrealizedPnl.toFixed(2)}`)

          return {
            totalCollateral,
            freeCollateral,
            marginRequirement,
            accountValue,
            leverage,
            availableBalance,
            netUsdValue: finalNetUsdValue,
            unrealizedPnl: totalUnrealizedPnl
          }
        } catch (sdkError: any) {
          console.log('⚠️ SDK balance method failed, using fallback:', sdkError.message)
          // Fall through to fallback method
        } finally {
          // Always unsubscribe to clean up
          if (this.driftClient) {
            try {
              await this.driftClient.unsubscribe()
            } catch (e) {
              // Ignore unsubscribe errors
            }
          }
        }
      }
      
      // Fallback: Return basic account info
      console.log('📊 Using fallback balance method - fetching basic account data')
      const balance = await this.connection.getBalance(this.publicKey)
      
      return {
        totalCollateral: 0,
        freeCollateral: 0,
        marginRequirement: 0,
        accountValue: balance / 1e9, // SOL balance
        leverage: 0,
        availableBalance: 0,
        netUsdValue: balance / 1e9, // Use SOL balance as fallback
        unrealizedPnl: 0
      }
      
    } catch (error: any) {
      throw new Error(`Failed to get account balance: ${error.message}`)
    }
  }

  async executeTrade(params: TradeParams): Promise<TradeResult> {
    if (!this.driftClient || !this.isInitialized) {
      throw new Error('Client not logged in. Call login() first.')
    }

    try {
      await this.driftClient.subscribe()
      const marketIndex = await this.getMarketIndex(params.symbol)
      const direction = params.side === 'BUY' ? PositionDirection.LONG : PositionDirection.SHORT
      const orderType = params.orderType === 'LIMIT' ? OrderType.LIMIT : OrderType.MARKET
      const price = params.price ? new BN(Math.round(params.price * PRICE_PRECISION.toNumber())) : undefined
      const baseAmount = new BN(Math.round(params.amount * BASE_PRECISION.toNumber()))
      
      // Place the main order
      const txSig = await this.driftClient.placeAndTakePerpOrder({
        marketIndex,
        direction,
        baseAssetAmount: baseAmount,
        orderType,
        price,
        marketType: MarketType.PERP
      })
      
      console.log(`✅ Main order placed: ${txSig}`)
      
      // Place stop loss and take profit orders if specified
      const conditionalOrders: string[] = []
      
      if (params.stopLoss && params.stopLoss > 0) {
        try {
          const stopLossPrice = new BN(Math.round(params.stopLoss * PRICE_PRECISION.toNumber()))
          const stopLossDirection = direction === PositionDirection.LONG ? PositionDirection.SHORT : PositionDirection.LONG
          
          const stopLossTxSig = await this.driftClient.placeAndTakePerpOrder({
            marketIndex,
            direction: stopLossDirection,
            baseAssetAmount: baseAmount,
            orderType: OrderType.LIMIT,
            price: stopLossPrice,
            marketType: MarketType.PERP,
            // Add conditional trigger
            postOnly: false,
            reduceOnly: true // This ensures it only closes positions
          })
          
          conditionalOrders.push(stopLossTxSig)
          console.log(`🛑 Stop loss order placed: ${stopLossTxSig} at $${params.stopLoss}`)
        } catch (e: any) {
          console.warn(`⚠️ Failed to place stop loss order: ${e.message}`)
        }
      }
      
      if (params.takeProfit && params.takeProfit > 0) {
        try {
          const takeProfitPrice = new BN(Math.round(params.takeProfit * PRICE_PRECISION.toNumber()))
          const takeProfitDirection = direction === PositionDirection.LONG ? PositionDirection.SHORT : PositionDirection.LONG
          
          const takeProfitTxSig = await this.driftClient.placeAndTakePerpOrder({
            marketIndex,
            direction: takeProfitDirection,
            baseAssetAmount: baseAmount,
            orderType: OrderType.LIMIT,
            price: takeProfitPrice,
            marketType: MarketType.PERP,
            postOnly: false,
            reduceOnly: true // This ensures it only closes positions
          })
          
          conditionalOrders.push(takeProfitTxSig)
          console.log(`🎯 Take profit order placed: ${takeProfitTxSig} at $${params.takeProfit}`)
        } catch (e: any) {
          console.warn(`⚠️ Failed to place take profit order: ${e.message}`)
        }
      }
      
      const result = { 
        success: true, 
        txId: txSig,
        conditionalOrders: conditionalOrders.length > 0 ? conditionalOrders : undefined
      }
      
      // Store the trade in local database for history tracking
      try {
        const { default: prisma } = await import('./prisma')
        
        // Get current market price (simplified - using a default for now)
        let currentPrice = 160; // Default SOL price
        try {
          // Try to get actual market price from the market
          const perpMarket = this.driftClient.getPerpMarketAccount(marketIndex)
          if (perpMarket && perpMarket.amm) {
            // Use oracle price or mark price if available
            const oraclePrice = perpMarket.amm.historicalOracleData?.lastOraclePrice || 
                               perpMarket.amm.lastMarkPriceTwap ||
                               new BN(160 * PRICE_PRECISION.toNumber())
            currentPrice = convertToNumber(oraclePrice, PRICE_PRECISION)
          }
        } catch (priceError) {
          console.log('⚠️ Could not get current market price, using default')
        }
        
        await prisma.trade.create({
          data: {
            userId: 'default-user', // TODO: Implement proper user management
            symbol: params.symbol,
            side: params.side,
            amount: params.amount,
            price: currentPrice,
            status: 'FILLED',
            executedAt: new Date(),
            driftTxId: txSig
          }
        })
        console.log(`💾 Trade saved to database: ${params.side} ${params.amount} ${params.symbol} at $${currentPrice}`)
      } catch (dbError) {
        console.log('⚠️ Failed to save trade to database:', (dbError as Error).message)
        // Don't fail the trade if database save fails
      }
      
      return result
    } catch (e: any) {
      return { success: false, error: e.message }
    } finally {
      if (this.driftClient) {
        await this.driftClient.unsubscribe()
      }
    }
  }

  async closePosition(symbol: string, amount?: number): Promise<TradeResult> {
    if (!this.driftClient || !this.isInitialized) {
      throw new Error('Client not logged in. Call login() first.')
    }

    try {
      await this.driftClient.subscribe()
      const marketIndex = await this.getMarketIndex(symbol)
      
      // Get current position to determine the size and direction to close
      const user = this.driftClient.getUser()
      const perpPosition = user.getPerpPosition(marketIndex)
      
      if (!perpPosition || perpPosition.baseAssetAmount.eq(ZERO)) {
        return { success: false, error: 'No position found for this symbol' }
      }
      
      const positionSize = Math.abs(perpPosition.baseAssetAmount.toNumber()) / BASE_PRECISION.toNumber()
      const isLong = perpPosition.baseAssetAmount.gt(ZERO)
      
      // Determine amount to close (default to full position)
      const closeAmount = amount && amount > 0 && amount <= positionSize ? amount : positionSize
      const baseAmount = new BN(Math.round(closeAmount * BASE_PRECISION.toNumber()))
      
      // Close position by taking opposite direction
      const direction = isLong ? PositionDirection.SHORT : PositionDirection.LONG
      
      const txSig = await this.driftClient.placeAndTakePerpOrder({
        marketIndex,
        direction,
        baseAssetAmount: baseAmount,
        orderType: OrderType.MARKET,
        marketType: MarketType.PERP,
        reduceOnly: true // This ensures it only closes the position
      })
      
      console.log(`✅ Position closed: ${txSig}`)
      return { success: true, txId: txSig }
      
    } catch (e: any) {
      console.error(`❌ Failed to close position: ${e.message}`)
      return { success: false, error: e.message }
    } finally {
      if (this.driftClient) {
        await this.driftClient.unsubscribe()
      }
    }
  }

  async getPositions(): Promise<Position[]> {
    try {
      if (this.isInitialized && this.driftClient) {
        // Subscribe to user account to access positions
        try {
          console.log('🔍 Subscribing to user account for positions...')
          await this.driftClient.subscribe()
          
          const user = this.driftClient.getUser()
          
          // Get all available markets
          const positions: Position[] = []
          
          // Check perp positions - limit to main markets to avoid timeouts
          const mainMarkets = [0, 1, 2, 3, 4, 5]; // SOL, BTC, ETH and a few others
          
          for (const marketIndex of mainMarkets) {
            try {
              const p = user.getPerpPosition(marketIndex)
              if (!p || p.baseAssetAmount.isZero()) continue
              
              // Get market price
              const marketData = this.driftClient.getPerpMarketAccount(marketIndex)
              const markPrice = convertToNumber(marketData?.amm.lastMarkPriceTwap || new BN(0), PRICE_PRECISION)
              
              // Calculate unrealized PnL
              const entryPrice = convertToNumber(p.quoteEntryAmount.abs(), PRICE_PRECISION) / 
                                convertToNumber(p.baseAssetAmount.abs(), BASE_PRECISION)
              const size = convertToNumber(p.baseAssetAmount.abs(), BASE_PRECISION)
              const isLong = p.baseAssetAmount.gt(new BN(0))
              const unrealizedPnl = isLong ? 
                (markPrice - entryPrice) * size : 
                (entryPrice - markPrice) * size

              positions.push({
                symbol: this.getSymbolFromMarketIndex(marketIndex),
                side: isLong ? 'LONG' : 'SHORT',
                size,
                entryPrice,
                markPrice,
                unrealizedPnl,
                marketIndex,
                marketType: 'PERP'
              })
              
              console.log(`✅ Found position: ${this.getSymbolFromMarketIndex(marketIndex)} ${isLong ? 'LONG' : 'SHORT'} ${size}`)
            } catch (error) {
              // Skip markets that don't exist or have errors
              continue
            }
          }
          
          console.log(`📊 Found ${positions.length} total positions`)
          return positions
          
        } catch (sdkError: any) {
          console.log('⚠️ SDK positions method failed, using fallback:', sdkError.message)
          // Fall through to fallback method
        } finally {
          // Always unsubscribe to clean up
          if (this.driftClient) {
            try {
              await this.driftClient.unsubscribe()
            } catch (e) {
              // Ignore unsubscribe errors
            }
          }
        }
      }
      
      // Fallback: Return empty array instead of demo data
      console.log('📊 Using fallback positions method - returning empty positions')
      return []
      
    } catch (error: any) {
      console.error('❌ Error getting positions:', error)
      return [] // Return empty array instead of throwing error
    }
  }

  async getTradingHistory(limit: number = 50): Promise<TradeHistory[]> {
    try {
      console.log('📊 Fetching trading history from Drift...')
      
      if (!this.driftClient || !this.isInitialized) {
        console.log('⚠️ Drift client not initialized, trying local database...')
        return await this.getLocalTradingHistory(limit)
      }

      try {
        // Subscribe to get access to user data
        await this.driftClient.subscribe()
        const user = this.driftClient.getUser()
        
        console.log('📊 Getting user order records from Drift SDK...')
        
        console.log('📊 Getting user account data from Drift SDK...')
        
        // Get user account which contains order and trade history
        const userAccount = user.getUserAccount()
        console.log(`📊 User account found with ${userAccount.orders?.length || 0} orders`)
        
        // Convert orders to trade history
        const trades: TradeHistory[] = []
        
        if (userAccount.orders) {
          for (const order of userAccount.orders.slice(0, limit)) {
            try {
              // Only include filled orders (status 2 = filled)
              if (order.status === 2) {
                const marketIndex = order.marketIndex
                const symbol = this.getSymbolFromMarketIndex(marketIndex)
                const side = order.direction === 0 ? 'BUY' : 'SELL' // 0 = PositionDirection.LONG
                const baseAmount = order.baseAssetAmountFilled || order.baseAssetAmount
                const quoteAmount = order.quoteAssetAmountFilled || order.quoteAssetAmount
                
                // Calculate executed price from filled amounts
                const amount = Number(baseAmount.toString()) / 1e9 // Convert from base precision
                const totalValue = Number(quoteAmount.toString()) / 1e6 // Convert from quote precision  
                const price = amount > 0 ? totalValue / amount : 0
                
                const trade: TradeHistory = {
                  id: order.orderId?.toString() || `order_${Date.now()}_${trades.length}`,
                  symbol,
                  side,
                  amount,
                  price,
                  status: 'FILLED',
                  executedAt: new Date().toISOString(), // Use current time as fallback
                  txId: order.orderId?.toString() || '',
                  pnl: 0 // PnL calculation would require more complex logic
                }
                
                trades.push(trade)
                console.log(`✅ Processed trade: ${symbol} ${side} ${amount.toFixed(4)} @ $${price.toFixed(2)}`)
              }
            } catch (orderError) {
              console.warn('⚠️ Error processing order:', orderError)
              continue
            }
          }
        }
        
        // Sort by execution time (newest first)
        trades.sort((a, b) => new Date(b.executedAt).getTime() - new Date(a.executedAt).getTime())
        
        console.log(`✅ Successfully fetched ${trades.length} trades from Drift`)
        return trades
        
      } catch (sdkError: any) {
        console.error('❌ Error fetching from Drift SDK:', sdkError.message)
        return await this.getLocalTradingHistory(limit)
      } finally {
        if (this.driftClient) {
          try {
            await this.driftClient.unsubscribe()
          } catch (e) {
            // Ignore unsubscribe errors
          }
        }
      }
      
    } catch (error: any) {
      console.error('❌ Error getting trading history:', error)
      return await this.getLocalTradingHistory(limit)
    }
  }

  private async getLocalTradingHistory(limit: number): Promise<TradeHistory[]> {
    try {
      console.log('📊 Checking local trade database...')
      
      const { default: prisma } = await import('./prisma')
      const localTrades = await prisma.trade.findMany({
        orderBy: { executedAt: 'desc' },
        take: limit
      })
      
      if (localTrades.length > 0) {
        console.log(`📊 Found ${localTrades.length} trades in local database`)
        return localTrades.map((trade: any) => ({
          id: trade.id.toString(),
          symbol: trade.symbol,
          side: trade.side as 'BUY' | 'SELL',
          amount: trade.amount,
          price: trade.price,
          status: trade.status as 'FILLED' | 'PENDING' | 'CANCELLED',
          executedAt: trade.executedAt.toISOString(),
          pnl: trade.pnl || 0,
          txId: trade.driftTxId || trade.txId || ''
        }))
      }
      
      console.log('📊 No local trades found')
      return []
      
    } catch (prismaError) {
      console.log('⚠️ Local database not available:', (prismaError as Error).message)
      return []
    }
  }

  // Helper: map symbol to market index using Drift market data
  private async getMarketIndex(symbol: string): Promise<number> {
    if (!this.driftClient) {
      throw new Error('Client not initialized')
    }

    // Common market mappings for Drift
    const marketMap: { [key: string]: number } = {
      'SOLUSD': 0,
      'BTCUSD': 1, 
      'ETHUSD': 2,
      'DOTUSD': 3,
      'AVAXUSD': 4,
      'ADAUSD': 5,
      'MATICUSD': 6,
      'LINKUSD': 7,
      'ATOMUSD': 8,
      'NEARUSD': 9,
      'APTUSD': 10,
      'ORBSUSD': 11,
      'RNDUSD': 12,
      'WIFUSD': 13,
      'JUPUSD': 14,
      'TNSUSD': 15,
      'DOGEUSD': 16,
      'PEPE1KUSD': 17,
      'POPCATUSD': 18,
      'BOMERUSD': 19
    }

    const marketIndex = marketMap[symbol.toUpperCase()]
    if (marketIndex === undefined) {
      throw new Error(`Unknown symbol: ${symbol}. Available symbols: ${Object.keys(marketMap).join(', ')}`)
    }

    return marketIndex
  }

  // Helper: map market index to symbol
  private getSymbolFromMarketIndex(index: number): string {
    const indexMap: { [key: number]: string } = {
      0: 'SOLUSD',
      1: 'BTCUSD',
      2: 'ETHUSD', 
      3: 'DOTUSD',
      4: 'AVAXUSD',
      5: 'ADAUSD',
      6: 'MATICUSD',
      7: 'LINKUSD',
      8: 'ATOMUSD',
      9: 'NEARUSD',
      10: 'APTUSD',
      11: 'ORBSUSD',
      12: 'RNDUSD',
      13: 'WIFUSD',
      14: 'JUPUSD',
      15: 'TNSUSD',
      16: 'DOGEUSD',
      17: 'PEPE1KUSD',
      18: 'POPCATUSD',
      19: 'BOMERUSD'
    }

    return indexMap[index] || `MARKET_${index}`
  }
}

export const driftTradingService = new DriftTradingService()