import { NextRequest, NextResponse } from 'next/server'
import { getMarketDataCache } from '@/lib/trading/market-data-cache'

/**
 * Market Data Webhook Endpoint
 * 
 * Receives real-time metrics from TradingView alerts.
 * Called every 1-5 minutes per symbol to keep cache fresh.
 * 
 * TradingView Alert Message (JSON):
 * {
 *   "action": "market_data",
 *   "symbol": "{{ticker}}",
 *   "timeframe": "{{interval}}",
 *   "atr": {{ta.atr(14)}},
 *   "adx": {{ta.dmi(14, 14)}},
 *   "rsi": {{ta.rsi(14)}},
 *   "volumeRatio": {{volume / ta.sma(volume, 20)}},
 *   "pricePosition": {{(close - ta.lowest(low, 100)) / (ta.highest(high, 100) - ta.lowest(low, 100)) * 100}},
 *   "currentPrice": {{close}},
 *   "timestamp": {{timenow}}
 * }
 * 
 * Webhook URL: https://your-domain.com/api/trading/market-data
 */

/**
 * Normalize TradingView symbol format to Drift format
 */
function normalizeTradingViewSymbol(tvSymbol: string): string {
  if (tvSymbol.includes('-PERP')) return tvSymbol
  
  const symbolMap: Record<string, string> = {
    'SOLUSDT': 'SOL-PERP',
    'SOLUSD': 'SOL-PERP',
    'SOL': 'SOL-PERP',
    'ETHUSDT': 'ETH-PERP',
    'ETHUSD': 'ETH-PERP',
    'ETH': 'ETH-PERP',
    'BTCUSDT': 'BTC-PERP',
    'BTCUSD': 'BTC-PERP',
    'BTC': 'BTC-PERP'
  }
  
  return symbolMap[tvSymbol.toUpperCase()] || `${tvSymbol.toUpperCase()}-PERP`
}

export async function POST(request: NextRequest) {
  try {
    const body = await request.json()
    
    console.log('📡 Received market data webhook:', {
      action: body.action,
      symbol: body.symbol,
      atr: body.atr,
      adx: body.adx
    })
    
    // Validate it's a market data update
    if (body.action !== 'market_data') {
      console.log(`❌ Invalid action: ${body.action} (expected "market_data")`)
      return NextResponse.json(
        { error: 'Invalid action - expected "market_data"' },
        { status: 400 }
      )
    }

    // Validate required fields
    if (!body.symbol) {
      return NextResponse.json(
        { error: 'Missing symbol' },
        { status: 400 }
      )
    }

    const driftSymbol = normalizeTradingViewSymbol(body.symbol)
    
    // Store in cache for immediate use
    const marketCache = getMarketDataCache()
    marketCache.set(driftSymbol, {
      symbol: driftSymbol,
      atr: Number(body.atr) || 0,
      adx: Number(body.adx) || 0,
      rsi: Number(body.rsi) || 50,
      volumeRatio: Number(body.volumeRatio) || 1.0,
      pricePosition: Number(body.pricePosition) || 50,
      maGap: Number(body.maGap) || undefined,
      currentPrice: Number(body.currentPrice) || 0,
      timestamp: Date.now(),
      timeframe: body.timeframe || '5'
    })

    // CRITICAL (Dec 2, 2025): Store ALL 1-minute data in database for historical analysis
    // User directive: "we want to store the data for 4 weeks"
    // Purpose: Enable granular 8-hour analysis of blocked signals with full indicator data
    try {
      const { getPrismaClient } = await import('@/lib/database/trades')
      const prisma = getPrismaClient()
      
      await prisma.marketData.create({
        data: {
          symbol: driftSymbol,
          timeframe: body.timeframe || '1',
          price: Number(body.currentPrice) || 0,
          atr: Number(body.atr) || 0,
          adx: Number(body.adx) || 0,
          rsi: Number(body.rsi) || 50,
          volumeRatio: Number(body.volumeRatio) || 1.0,
          pricePosition: Number(body.pricePosition) || 50,
          maGap: Number(body.maGap) || undefined,
          volume: Number(body.volume) || undefined,
          timestamp: new Date(body.timestamp || Date.now())
        }
      })
      
      console.log(`💾 Stored 1-minute data in database for ${driftSymbol}`)
    } catch (dbError) {
      console.error('❌ Failed to store market data in database:', dbError)
      // Don't fail the request if database save fails - cache still works
    }

    console.log(`✅ Market data cached for ${driftSymbol}`)

    return NextResponse.json({ 
      success: true,
      symbol: driftSymbol,
      message: 'Market data cached and stored successfully',
      expiresInSeconds: 300
    })

  } catch (error) {
    console.error('❌ Market data webhook error:', error)
    return NextResponse.json(
      { error: 'Internal server error' },
      { status: 500 }
    )
  }
}

/**
 * GET endpoint to view currently cached data (for debugging)
 */
export async function GET(request: NextRequest) {
  try {
    const marketCache = getMarketDataCache()
    const availableSymbols = marketCache.getAvailableSymbols()
    
    const cacheData: Record<string, any> = {}
    
    for (const symbol of availableSymbols) {
      const data = marketCache.get(symbol)
      if (data) {
        const ageSeconds = marketCache.getDataAge(symbol)
        cacheData[symbol] = {
          ...data,
          ageSeconds
        }
      }
    }

    return NextResponse.json({
      success: true,
      availableSymbols,
      count: availableSymbols.length,
      cache: cacheData
    })

  } catch (error) {
    console.error('❌ Market data GET error:', error)
    return NextResponse.json(
      { error: 'Internal server error' },
      { status: 500 }
    )
  }
}