#!/usr/bin/env node
/**
 * AWOOOI 自動化 QA 腳本 - verify-sse.js
 * =====================================
 * 自動驗證 SSE 連線，禁止人工 QA
 *
 * 驗證項目:
 * 1. 後端 SSE 端點 200 OK
 * 2. SSE 數據流 (connected, heartbeat)
 * 3. 前端頁面可訪問
 *
 * 用法: node scripts/verify-sse.js
 */

const http = require('http')

const API_URL = 'http://localhost:8000'
const FRONTEND_URL = 'http://localhost:3000'

// ANSI Colors
const GREEN = '\x1b[32m'
const RED = '\x1b[31m'
const YELLOW = '\x1b[33m'
const RESET = '\x1b[0m'

function log(status, message) {
  const icon = status === 'pass' ? `${GREEN}✓${RESET}` : status === 'fail' ? `${RED}✗${RESET}` : `${YELLOW}→${RESET}`
  console.log(`${icon} ${message}`)
}

// Test 1: Backend SSE Endpoint
async function testBackendSSE() {
  return new Promise((resolve) => {
    log('info', '測試後端 SSE 端點...')

    const req = http.get(`${API_URL}/api/v1/dashboard/stream`, (res) => {
      if (res.statusCode !== 200) {
        log('fail', `後端 SSE: HTTP ${res.statusCode}`)
        resolve(false)
        return
      }

      let data = ''
      let gotConnected = false
      let gotHeartbeat = false

      res.on('data', (chunk) => {
        data += chunk.toString()

        if (data.includes('event: connected')) gotConnected = true
        if (data.includes('event: heartbeat') || data.includes('event: host_update')) gotHeartbeat = true

        // Stop after receiving both events
        if (gotConnected && gotHeartbeat) {
          req.destroy()
          log('pass', '後端 SSE: connected + data events 收到')
          resolve(true)
        }
      })

      // Timeout after 10 seconds
      setTimeout(() => {
        req.destroy()
        if (gotConnected) {
          log('pass', '後端 SSE: connected 收到')
          resolve(true)
        } else {
          log('fail', '後端 SSE: 超時未收到事件')
          resolve(false)
        }
      }, 10000)
    })

    req.on('error', (err) => {
      log('fail', `後端 SSE: ${err.message}`)
      resolve(false)
    })
  })
}

// Test 2: Frontend Accessible
async function testFrontend() {
  return new Promise((resolve) => {
    log('info', '測試前端頁面...')

    http.get(`${FRONTEND_URL}/zh-TW`, (res) => {
      if (res.statusCode === 200 || res.statusCode === 307) {
        log('pass', `前端頁面: HTTP ${res.statusCode}`)
        resolve(true)
      } else {
        log('fail', `前端頁面: HTTP ${res.statusCode}`)
        resolve(false)
      }
    }).on('error', (err) => {
      log('fail', `前端頁面: ${err.message}`)
      resolve(false)
    })
  })
}

// Test 3: API Health Check
async function testAPIHealth() {
  return new Promise((resolve) => {
    log('info', '測試 API 健康狀態...')

    http.get(`${API_URL}/api/v1/health`, (res) => {
      let data = ''
      res.on('data', chunk => data += chunk)
      res.on('end', () => {
        try {
          const json = JSON.parse(data)
          if (json.status === 'healthy') {
            log('pass', `API 健康: ${json.status}`)
            resolve(true)
          } else {
            log('fail', `API 健康: ${json.status}`)
            resolve(false)
          }
        } catch (e) {
          log('fail', `API 健康: 無法解析 JSON`)
          resolve(false)
        }
      })
    }).on('error', (err) => {
      log('fail', `API 健康: ${err.message}`)
      resolve(false)
    })
  })
}

// Main
async function main() {
  console.log('\n========================================')
  console.log('  AWOOOI 自動化 QA - SSE 驗證腳本')
  console.log('========================================\n')

  const results = {
    apiHealth: await testAPIHealth(),
    backendSSE: await testBackendSSE(),
    frontend: await testFrontend(),
  }

  console.log('\n========================================')
  console.log('  驗證結果')
  console.log('========================================')
  console.log(`API 健康:     ${results.apiHealth ? GREEN + 'PASS' + RESET : RED + 'FAIL' + RESET}`)
  console.log(`後端 SSE:     ${results.backendSSE ? GREEN + 'PASS' + RESET : RED + 'FAIL' + RESET}`)
  console.log(`前端頁面:     ${results.frontend ? GREEN + 'PASS' + RESET : RED + 'FAIL' + RESET}`)

  const allPassed = Object.values(results).every(Boolean)
  console.log(`\n總結: ${allPassed ? GREEN + '全部通過' + RESET : RED + '有失敗項目' + RESET}`)
  console.log('========================================\n')

  process.exit(allPassed ? 0 : 1)
}

main().catch(console.error)