import { NextResponse } from 'next/server'

export async function POST(request) {
  try {
    const body = await request.json()
    const { 
      symbol, 
      side, 
      amount, 
      leverage = 1, 
      perpSize, 
      stopLoss, 
      takeProfit, 
      useRealDEX = false 
    } = body

    console.log('⚡ Jupiter Perpetuals trade request:', { 
      symbol, 
      side, 
      amount, 
      leverage, 
      perpSize, 
      stopLoss, 
      takeProfit, 
      useRealDEX 
    })

    // Validate inputs
    if (!symbol || !side || !amount) {
      return NextResponse.json(
        { 
          success: false, 
          error: 'Missing required fields: symbol, side, amount' 
        },
        { status: 400 }
      )
    }

    if (!['BUY', 'SELL', 'LONG', 'SHORT'].includes(side.toUpperCase())) {
      return NextResponse.json(
        { 
          success: false, 
          error: 'Invalid side. Must be LONG/SHORT or BUY/SELL' 
        },
        { status: 400 }
      )
    }

    if (amount <= 0) {
      return NextResponse.json(
        { 
          success: false, 
          error: 'Amount must be greater than 0' 
        },
        { status: 400 }
      )
    }

    if (leverage < 1 || leverage > 10) {
      return NextResponse.json(
        { 
          success: false, 
          error: 'Leverage must be between 1x and 10x' 
        },
        { status: 400 }
      )
    }

    // Check if we should use real DEX or simulation
    if (useRealDEX) {
      console.log('🚀 Executing REAL perpetual trade via Jupiter Perpetuals')
      
      // TODO: Implement actual Jupiter Perpetuals integration here
      // For now, return an error indicating real trading is not yet implemented
      return NextResponse.json(
        {
          success: false,
          error: 'Real Jupiter Perpetuals trading not yet implemented. Set useRealDEX: false for simulation mode.',
          feature: 'JUPITER_PERPS_REAL_TRADING',
          status: 'IN_DEVELOPMENT'
        },
        { status: 501 } // Not Implemented
      )
    }
    
    console.log('🎮 Executing SIMULATED perpetual trade (Jupiter Perps integration in development)')
    
    // Normalize side for perps
    const perpSide = side.toUpperCase() === 'BUY' ? 'LONG' : 
                     side.toUpperCase() === 'SELL' ? 'SHORT' : 
                     side.toUpperCase()

    // Calculate position details
    const currentPrice = symbol === 'SOL' ? 166.75 : symbol === 'BTC' ? 121819 : 3041.66
    const positionSize = perpSize || amount
    const leveragedAmount = positionSize * leverage
    const entryFee = leveragedAmount * 0.001 // 0.1% opening fee
    const liquidationPrice = perpSide === 'LONG' 
      ? currentPrice * (1 - 0.9 / leverage) // Approximate liquidation price
      : currentPrice * (1 + 0.9 / leverage)

    // Simulate network delay
    await new Promise(resolve => setTimeout(resolve, 1200))

    const result = {
      success: true,
      trade: {
        txId: `perp_sim_${Date.now()}_${Math.random().toString(36).substr(2, 8)}`,
        orderId: `perp_order_${Date.now()}`,
        symbol: symbol.toUpperCase(),
        side: perpSide,
        positionSize: positionSize,
        leverage: leverage,
        leveragedAmount: leveragedAmount,
        entryPrice: currentPrice,
        liquidationPrice: liquidationPrice,
        entryFee: entryFee,
        timestamp: Date.now(),
        status: 'OPEN',
        dex: 'JUPITER_PERPS_SIMULATION',
        stopLoss: stopLoss,
        takeProfit: takeProfit,
        monitoring: !!(stopLoss || takeProfit),
        pnl: 0 // Initial PnL
      },
      message: `${perpSide} perpetual position opened: ${positionSize} ${symbol} at ${leverage}x leverage`
    }

    if (stopLoss || takeProfit) {
      result.message += ` with TP/SL monitoring`
    }

    // Add perp-specific warnings
    result.warnings = [
      `Liquidation risk at $${liquidationPrice.toFixed(4)}`,
      `Entry fee: $${entryFee.toFixed(4)}`,
      'Perpetual positions require active monitoring'
    ]

    if (!useRealDEX) {
      result.message += ' (SIMULATED)'
      result.warnings.push('🚧 Jupiter Perpetuals integration in development')
    }

    return NextResponse.json(result)

  } catch (error) {
    console.error('❌ Perpetual trade execution error:', error)
    
    return NextResponse.json(
      { 
        success: false, 
        error: 'Internal server error',
        message: 'Failed to execute perpetual trade. Please try again.'
      },
      { status: 500 }
    )
  }
}

export async function GET() {
  return NextResponse.json({
    message: 'Jupiter Perpetuals Trading API',
    endpoints: {
      'POST /api/trading/execute-perp': 'Execute perpetual trades',
    },
    status: 'In Development',
    features: [
      'Leveraged trading (1x-10x)',
      'Long/Short positions',
      'Stop Loss & Take Profit',
      'Liquidation protection',
      'Real-time PnL tracking'
    ],
    note: 'Currently in simulation mode. Jupiter Perpetuals integration coming soon.'
  })
}