import { NextRequest, NextResponse } from 'next/server'
import { aiAnalysisService } from '../../../lib/ai-analysis'
import { TradingViewCredentials } from '../../../lib/tradingview-automation'

export async function POST(request: NextRequest) {
  try {
    const body = await request.json()
    const { symbol, timeframe, credentials, action } = body

    // Validate input
    if (!symbol || !timeframe || !credentials?.email || !credentials?.password) {
      return NextResponse.json({
        success: false,
        error: 'Missing required fields: symbol, timeframe, and credentials'
      }, { status: 400 })
    }

    const tradingViewCredentials: TradingViewCredentials = {
      email: credentials.email,
      password: credentials.password
    }

    switch (action) {
      case 'capture_and_analyze':
        // Single symbol and timeframe
        const analysis = await aiAnalysisService.captureAndAnalyze(
          symbol,
          timeframe,
          tradingViewCredentials
        )

        if (!analysis) {
          return NextResponse.json({
            success: false,
            error: 'Failed to capture screenshot or analyze chart'
          }, { status: 500 })
        }

        return NextResponse.json({
          success: true,
          data: {
            symbol,
            timeframe,
            analysis,
            timestamp: new Date().toISOString()
          }
        })

      case 'capture_multiple':
        // Multiple symbols or timeframes
        const { symbols = [symbol], timeframes = [timeframe] } = body
        
        const results = await aiAnalysisService.captureAndAnalyzeMultiple(
          symbols,
          timeframes,
          tradingViewCredentials
        )

        return NextResponse.json({
          success: true,
          data: {
            results,
            timestamp: new Date().toISOString()
          }
        })

      case 'capture_with_config':
        // Advanced configuration
        const { layouts } = body
        
        const configResult = await aiAnalysisService.captureAndAnalyzeWithConfig({
          symbol,
          timeframe,
          layouts,
          credentials: tradingViewCredentials
        })

        return NextResponse.json({
          success: true,
          data: {
            symbol,
            timeframe,
            screenshots: configResult.screenshots,
            analysis: configResult.analysis,
            timestamp: new Date().toISOString()
          }
        })

      default:
        return NextResponse.json({
          success: false,
          error: 'Invalid action. Use: capture_and_analyze, capture_multiple, or capture_with_config'
        }, { status: 400 })
    }

  } catch (error) {
    console.error('Automated analysis API error:', error)
    
    return NextResponse.json({
      success: false,
      error: error instanceof Error ? error.message : 'Unknown error occurred'
    }, { status: 500 })
  }
}

export async function GET() {
  return NextResponse.json({
    success: true,
    message: 'TradingView Automated Analysis API',
    endpoints: {
      POST: {
        description: 'Automated screenshot capture and AI analysis',
        actions: [
          'capture_and_analyze - Single symbol/timeframe analysis',
          'capture_multiple - Multiple symbols/timeframes',
          'capture_with_config - Advanced configuration with layouts'
        ],
        required_fields: ['symbol', 'timeframe', 'credentials', 'action'],
        example: {
          symbol: 'SOLUSD',
          timeframe: '5',
          credentials: {
            email: 'your_email@example.com',
            password: 'your_password'
          },
          action: 'capture_and_analyze'
        }
      }
    }
  })
}