Add position scaling feature via Telegram
- New endpoint: /api/trading/scale-position to add to existing positions - Calculates new average entry price after adding more size - Cancels old TP/SL orders and places new ones at updated levels - Telegram command: /scale [percent] (default 50%) - Example: /scale 100 doubles your position - Automatically adjusts Position Manager tracking with new values - Cleaned up stale duplicate trade from database
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mindesbunister
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app/api/trading/scale-position/route.ts
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224
app/api/trading/scale-position/route.ts
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/**
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* Scale Position API Endpoint
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*
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* Adds to an existing position and recalculates TP/SL orders
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* POST /api/trading/scale-position
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*/
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import { NextRequest, NextResponse } from 'next/server'
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import { getMergedConfig } from '@/config/trading'
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import { getInitializedPositionManager } from '@/lib/trading/position-manager'
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import { initializeDriftService } from '@/lib/drift/client'
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import { openPosition, placeExitOrders, cancelAllOrders } from '@/lib/drift/orders'
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interface ScalePositionRequest {
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tradeId: string
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scalePercent?: number // 50 = add 50%, 100 = double position
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}
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interface ScalePositionResponse {
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success: boolean
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message: string
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oldEntry?: number
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newEntry?: number
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oldSize?: number
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newSize?: number
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newTP1?: number
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newTP2?: number
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newSL?: number
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}
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export async function POST(request: NextRequest): Promise<NextResponse<ScalePositionResponse>> {
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try {
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// Verify authorization
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const authHeader = request.headers.get('authorization')
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const expectedAuth = `Bearer ${process.env.API_SECRET_KEY}`
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if (!authHeader || authHeader !== expectedAuth) {
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return NextResponse.json(
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{
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success: false,
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message: 'Unauthorized',
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},
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{ status: 401 }
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)
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}
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const body: ScalePositionRequest = await request.json()
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console.log('📈 Scaling position:', body)
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if (!body.tradeId) {
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return NextResponse.json(
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{
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success: false,
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message: 'tradeId is required',
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},
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{ status: 400 }
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)
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}
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const scalePercent = body.scalePercent || 50 // Default: add 50%
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// Get current configuration
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const config = getMergedConfig()
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// Get Position Manager
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const positionManager = await getInitializedPositionManager()
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const activeTrades = positionManager.getActiveTrades()
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const trade = activeTrades.find(t => t.id === body.tradeId)
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if (!trade) {
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return NextResponse.json(
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{
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success: false,
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message: `Position ${body.tradeId} not found`,
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},
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{ status: 404 }
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)
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}
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console.log(`📊 Current position: ${trade.symbol} ${trade.direction}`)
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console.log(` Entry: $${trade.entryPrice}`)
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console.log(` Size: ${trade.currentSize} (${trade.positionSize} USD)`)
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console.log(` Scaling by: ${scalePercent}%`)
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// Initialize Drift service
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const driftService = await initializeDriftService()
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// Check account health before scaling
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const healthData = await driftService.getAccountHealth()
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const healthPercent = healthData.marginRatio
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console.log(`💊 Account health: ${healthPercent}%`)
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if (healthPercent < 30) {
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return NextResponse.json(
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{
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success: false,
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message: `Account health too low (${healthPercent}%) to scale position`,
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},
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{ status: 400 }
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)
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}
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// Calculate additional position size
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const additionalSizeUSD = (trade.positionSize * scalePercent) / 100
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console.log(`💰 Adding $${additionalSizeUSD} to position...`)
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// Open additional position at market
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const addResult = await openPosition({
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symbol: trade.symbol,
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direction: trade.direction,
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sizeUSD: additionalSizeUSD,
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slippageTolerance: config.slippageTolerance,
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})
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if (!addResult.success || !addResult.fillPrice) {
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throw new Error(`Failed to open additional position: ${addResult.error}`)
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}
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console.log(`✅ Additional position opened at $${addResult.fillPrice}`)
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// Calculate new average entry price
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const oldTotalValue = trade.positionSize
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const newTotalValue = oldTotalValue + additionalSizeUSD
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const oldEntry = trade.entryPrice
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const newEntryContribution = addResult.fillPrice
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// Weighted average: (old_size * old_price + new_size * new_price) / total_size
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const newAvgEntry = (
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(oldTotalValue * oldEntry) + (additionalSizeUSD * newEntryContribution)
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) / newTotalValue
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console.log(`📊 New average entry: $${oldEntry} → $${newAvgEntry}`)
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console.log(`📊 New position size: $${oldTotalValue} → $${newTotalValue}`)
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// Cancel all existing exit orders
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console.log('🗑️ Cancelling old TP/SL orders...')
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try {
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await cancelAllOrders(trade.symbol)
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console.log('✅ Old orders cancelled')
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} catch (cancelError) {
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console.error('⚠️ Failed to cancel orders:', cancelError)
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// Continue anyway - might not have any orders
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}
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// Calculate new TP/SL prices based on new average entry
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const calculatePrice = (entry: number, percent: number, direction: 'long' | 'short') => {
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if (direction === 'long') {
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return entry * (1 + percent / 100)
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} else {
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return entry * (1 - percent / 100)
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}
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}
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const newTP1 = calculatePrice(newAvgEntry, config.takeProfit1Percent, trade.direction)
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const newTP2 = calculatePrice(newAvgEntry, config.takeProfit2Percent, trade.direction)
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const newSL = calculatePrice(newAvgEntry, config.stopLossPercent, trade.direction)
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console.log(`🎯 New targets:`)
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console.log(` TP1: $${newTP1} (${config.takeProfit1Percent}%)`)
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console.log(` TP2: $${newTP2} (${config.takeProfit2Percent}%)`)
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console.log(` SL: $${newSL} (${config.stopLossPercent}%)`)
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// Place new exit orders
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console.log('📝 Placing new TP/SL orders...')
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const exitOrders = await placeExitOrders({
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symbol: trade.symbol,
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direction: trade.direction,
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positionSizeUSD: newTotalValue,
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tp1Price: newTP1,
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tp2Price: newTP2,
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stopLossPrice: newSL,
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tp1SizePercent: config.takeProfit1SizePercent,
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tp2SizePercent: config.takeProfit2SizePercent,
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useDualStops: config.useDualStops,
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softStopPrice: config.useDualStops ? calculatePrice(newAvgEntry, config.softStopPercent, trade.direction) : undefined,
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softStopBuffer: config.useDualStops ? config.softStopBuffer : undefined,
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hardStopPrice: config.useDualStops ? calculatePrice(newAvgEntry, config.hardStopPercent, trade.direction) : undefined,
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})
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console.log(`✅ New exit orders placed`)
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// Update Position Manager with new values
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trade.entryPrice = newAvgEntry
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trade.positionSize = newTotalValue
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trade.currentSize = newTotalValue
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trade.tp1Price = newTP1
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trade.tp2Price = newTP2
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trade.stopLossPrice = newSL
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// Reset tracking values
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trade.tp1Hit = false
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trade.slMovedToBreakeven = false
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trade.slMovedToProfit = false
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trade.peakPnL = 0
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trade.peakPrice = newAvgEntry
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console.log(`💾 Updated Position Manager`)
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return NextResponse.json({
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success: true,
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message: `Position scaled by ${scalePercent}% - New entry: $${newAvgEntry.toFixed(2)}`,
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oldEntry: oldEntry,
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newEntry: newAvgEntry,
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oldSize: oldTotalValue,
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newSize: newTotalValue,
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newTP1: newTP1,
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newTP2: newTP2,
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newSL: newSL,
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})
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} catch (error) {
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console.error('❌ Scale position error:', error)
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return NextResponse.json(
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{
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success: false,
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message: error instanceof Error ? error.message : 'Unknown error',
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},
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{ status: 500 }
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)
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}
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}
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