import CryptoJS from 'crypto-js'

export default async function handler(req, res) {
  if (req.method !== 'POST') {
    return res.status(405).json({ error: 'Method not allowed' })
  }

  try {
    const { data, operation, agentId } = req.body
    
    // Simulate secure processing with encryption
    const timestamp = new Date().toISOString()
    const secureHash = CryptoJS.SHA256(JSON.stringify(data) + timestamp + agentId).toString()
    
    // Simulate different agent operations
    let processedData = data
    switch (operation) {
      case 'analyze':
        processedData = await simulateAnalysis(data, agentId)
        break
      case 'encrypt':
        processedData = CryptoJS.AES.encrypt(JSON.stringify(data), secureHash).toString()
        break
      case 'sanitize':
        processedData = simulateSanitization(data)
        break
      default:
        processedData = { ...data, processed: true, timestamp }
    }

    res.status(200).json({
      success: true,
      data: processedData,
      security: {
        hash: secureHash,
        timestamp,
        agentId,
        encryption: operation === 'encrypt' ? 'AES-256' : 'none'
      }
    })
  } catch (error) {
    res.status(500).json({
      success: false,
      error: 'Secure processing failed',
      message: error.message
    })
  }
}

async function simulateAnalysis(data, agentId) {
  // Simulate AI analysis
  await new Promise(resolve => setTimeout(resolve, 1000))
  return {
    ...data,
    analysis: {
      sentiment: Math.random() > 0.5 ? 'positive' : 'negative',
      confidence: Math.floor(Math.random() * 30) + 70,
      agentId,
      findings: ['Pattern detected', 'Anomaly flagged', 'Security verified']
    }
  }
}

function simulateSanitization(data) {
  // Simulate data sanitization
  return {
    ...data,
    sanitized: true,
    removed: ['PII', 'Sensitive metadata', 'Tracking elements'],
    timestamp: new Date().toISOString()
  }
}