/**
 * WordPress Monitor API Route
 * Receives data from Descomplicar Monitor WordPress plugin
 * POST /api/wp-monitor - Receive site data
 * GET /api/wp-monitor - List monitored sites
 * GET /api/wp-monitor?test - Connection test
 * @author Descomplicar® | @link descomplicar.pt | @copyright 2026
 */
import { Router } from 'express'
import type { Request, Response } from 'express'
import db from '../db.js'

const router = Router()

// Validação obrigatória da API key
const API_KEY = process.env.WP_MONITOR_API_KEY
if (!API_KEY) {
  throw new Error('WP_MONITOR_API_KEY environment variable is required')
}

// Middleware to validate API key
function validateApiKey(req: Request, res: Response, next: Function) {
  const apiKey = req.headers['x-api-key'] || req.query.key

  if (apiKey !== API_KEY) {
    return res.status(401).json({ error: 'Unauthorized', message: 'Invalid API Key' })
  }
  next()
}

// Test endpoint
router.get('/', validateApiKey, async (req: Request, res: Response) => {
  // Test connection
  if (req.query.test !== undefined) {
    return res.json({ success: true, message: 'Connection OK', timestamp: new Date().toISOString() })
  }

  // List all WordPress sites
  try {
    const [sites] = await db.query(`
      SELECT name, status, details, last_check
      FROM tbl_eal_monitoring
      WHERE category = 'site'
      ORDER BY name ASC
    `)

    const result = (sites as any[]).map(site => ({
      name: site.name,
      status: site.status,
      last_check: site.last_check,
      data: typeof site.details === 'string' ? JSON.parse(site.details) : site.details
    }))

    res.json({
      success: true,
      sites: result,
      total: result.length,
      timestamp: new Date().toISOString()
    })
  } catch (error) {
    console.error('WP Monitor GET error:', error)
    res.status(500).json({ error: 'Database error', message: (error as Error).message })
  }
})

// Receive data from WordPress plugin
router.post('/', validateApiKey, async (req: Request, res: Response) => {
  const data = req.body

  if (!data || !data.site_url) {
    return res.status(400).json({ error: 'Bad Request', message: 'Invalid JSON or missing site_url' })
  }

  try {
    const siteUrl = data.site_url.replace(/\/$/, '')
    const siteName = data.site_name || new URL(siteUrl).hostname

    // Determine status based on data
    const status = determineStatus(data)
    const jsonData = JSON.stringify(data)

    // Check if site exists
    const [existing] = await db.query(
      'SELECT id FROM tbl_eal_monitoring WHERE category = ? AND name = ?',
      ['site', siteName]
    )

    if ((existing as any[]).length > 0) {
      // Update existing
      await db.query(
        'UPDATE tbl_eal_monitoring SET details = ?, status = ?, last_check = NOW() WHERE category = ? AND name = ?',
        [jsonData, status, 'site', siteName]
      )
    } else {
      // Insert new
      await db.query(
        'INSERT INTO tbl_eal_monitoring (name, category, status, details, last_check) VALUES (?, ?, ?, ?, NOW())',
        [siteName, 'site', status, jsonData]
      )
    }

    console.log(`[WP-Monitor] Received data from: ${siteUrl} - Status: ${status}`)

    res.json({
      success: true,
      message: 'Data received',
      site: siteName,
      status,
      timestamp: new Date().toISOString()
    })
  } catch (error) {
    console.error('WP Monitor POST error:', error)
    res.status(500).json({ error: 'Database error', message: (error as Error).message })
  }
})

/**
 * Determine status based on WordPress data
 */
function determineStatus(data: any): string {
  // Critical conditions
  if (data.health?.status === 'critical') {
    return 'failed'
  }

  let warnings = 0

  // Many pending updates
  if (data.updates?.counts?.total > 5) warnings++

  // Core update pending
  if (data.updates?.core?.length > 0) warnings++

  // Debug mode in production
  if (data.system?.debug_mode === true) warnings++

  // Health issues
  if (data.health?.issues?.length > 0) {
    warnings += data.health.issues.length
  }

  // Large database (>500MB)
  if (data.database?.size_mb > 500) warnings++

  if (warnings >= 3) return 'warning'
  return 'ok'
}

export default router