import { NextResponse } from 'next/server'
import { driftTradingService } from '../../../../lib/drift-trading'

export async function POST(request: Request) {
  try {
    const { 
      symbol, 
      side, 
      amount, 
      leverage, 
      orderType, 
      price, 
      stopLoss, 
      takeProfit,
      stopLossType,
      takeProfitType 
    } = await request.json()
    
    console.log(`🎯 Trade request: ${side} ${amount} ${symbol} at ${leverage}x leverage`)
    if (stopLoss) console.log(`🛑 Stop Loss: $${stopLoss} (${stopLossType})`)
    if (takeProfit) console.log(`🎯 Take Profit: $${takeProfit} (${takeProfitType})`)
    
    // Validate inputs
    if (!symbol || !side || !amount || !leverage) {
      return NextResponse.json(
        { success: false, error: 'Missing required trade parameters' },
        { status: 400 }
      )
    }

    if (amount <= 0 || leverage < 1 || leverage > 20) {
      return NextResponse.json(
        { success: false, error: 'Invalid trade parameters' },
        { status: 400 }
      )
    }

    // Validate stop loss and take profit if provided
    if (stopLoss && stopLoss <= 0) {
      return NextResponse.json(
        { success: false, error: 'Invalid stop loss price' },
        { status: 400 }
      )
    }

    if (takeProfit && takeProfit <= 0) {
      return NextResponse.json(
        { success: false, error: 'Invalid take profit price' },
        { status: 400 }
      )
    }

    // Convert LONG/SHORT to BUY/SELL for the trading service
    const tradeSide: 'BUY' | 'SELL' = side === 'LONG' ? 'BUY' : 'SELL'
    
    // Execute trade
    const tradeParams = {
      symbol,
      side: tradeSide,
      amount, // Position size in tokens
      orderType: orderType || 'MARKET',
      price: orderType === 'LIMIT' ? price : undefined,
      stopLoss,
      takeProfit,
      stopLossType,
      takeProfitType
    }

    const result = await driftTradingService.executeTrade(tradeParams)
    
    if (result.success) {
      console.log(`✅ Trade executed successfully: ${result.txId}`)
      const response: any = {
        success: true,
        txId: result.txId,
        executedPrice: result.executedPrice,
        executedAmount: result.executedAmount,
        message: `${side} order for ${amount} ${symbol} executed successfully`
      }
      
      if (result.conditionalOrders && result.conditionalOrders.length > 0) {
        response.conditionalOrders = result.conditionalOrders
        response.message += ` with ${result.conditionalOrders.length} conditional order(s)`
      }
      
      return NextResponse.json(response)
    } else {
      console.error(`❌ Trade execution failed: ${result.error}`)
      return NextResponse.json(
        { success: false, error: result.error },
        { status: 500 }
      )
    }
    
  } catch (error: any) {
    console.error('❌ Trade API error:', error)
    return NextResponse.json(
      { 
        success: false, 
        error: error.message || 'Trade execution failed'
      }, 
      { status: 500 }
    )
  }
}