import { NextResponse } from 'next/server'
import { PrismaClient } from '@prisma/client'

const prisma = new PrismaClient()

export async function GET() {
  try {
    // Get the latest automation session with correct data
    const session = await prisma.automationSession.findFirst({
      where: {
        userId: 'default-user',
        symbol: 'SOLUSD',
        timeframe: '1h'
      },
      orderBy: { createdAt: 'desc' }
    })

    if (!session) {
      return NextResponse.json({
        success: true,
        status: {
          isActive: false,
          mode: 'SIMULATION',
          symbol: 'SOLUSD',
          timeframe: '1h',
          totalTrades: 0,
          successfulTrades: 0,
          winRate: 0,
          totalPnL: 0,
          errorCount: 0
        }
      })
    }

    // Get actual trade data to calculate real statistics
    const trades = await prisma.trade.findMany({
      where: {
        userId: session.userId,
        symbol: session.symbol
      },
      orderBy: { createdAt: 'desc' }
    })

    const completedTrades = trades.filter(t => t.status === 'COMPLETED')
    const successfulTrades = completedTrades.filter(t => {
      const profit = t.profit || 0
      return profit > 0
    })

    const totalPnL = completedTrades.reduce((sum, trade) => {
      const profit = trade.profit || 0
      return sum + profit
    }, 0)

    const winRate = completedTrades.length > 0 ? 
      (successfulTrades.length / completedTrades.length * 100) : 0

    return NextResponse.json({
      success: true,
      status: {
        isActive: session.status === 'ACTIVE',
        mode: session.mode,
        symbol: session.symbol,
        timeframe: session.timeframe,
        totalTrades: completedTrades.length,
        successfulTrades: successfulTrades.length,
        winRate: Math.round(winRate * 10) / 10, // Round to 1 decimal
        totalPnL: Math.round(totalPnL * 100) / 100, // Round to 2 decimals
        lastAnalysis: session.lastAnalysis,
        lastTrade: session.lastTrade,
        nextScheduled: session.nextScheduled,
        errorCount: session.errorCount,
        lastError: session.lastError
      }
    })
  } catch (error) {
    console.error('Automation status error:', error)
    return NextResponse.json({
      success: false,
      error: 'Failed to get automation status'
    }, { status: 500 })
  }
}