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server/alert-engine.js

@@ -0,0 +1,46 @@
+import { prisma } from './db.js'
+
+// 跨源对比: 同 (indicatorName, period) 多源数据差异超阈值则插 Alert
+// conn: mysql2 连接
+// 阈值: 绝对差 >= 0.01 且 相对差 >= 1%
+// 返回 { inserted, scanned }
+const ABS_TOL = 0.01
+const REL_TOL = 0.01
+
+export async function checkAfterRefresh(conn) {
+  // conn 是 mysql2 连接, 走原始 SQL
+  const [rows] = await conn.execute(`
+    SELECT ia.name AS indicatorName, a.period, ia.source, a.value
+    FROM IndicatorPoint a
+    JOIN Indicator ia ON a.indicatorId = ia.id
+    ORDER BY ia.name, a.period
+  `)
+  const groups = new Map()
+  for (const r of rows) {
+    const k = r.indicatorName + '|' + r.period
+    if (!groups.has(k)) groups.set(k, [])
+    groups.get(k).push({ source: r.source, value: Number(r.value) })
+  }
+  let inserted = 0
+  for (const [k, arr] of groups) {
+    if (arr.length < 2) continue
+    const sources = new Set(arr.map((x) => x.source))
+    if (sources.size < 2) continue
+    for (let i = 0; i < arr.length; i++) {
+      for (let j = i + 1; j < arr.length; j++) {
+        const A = arr[i], B = arr[j]
+        const diff = Math.abs(A.value - B.value)
+        const base = Math.max(Math.abs(A.value), Math.abs(B.value), 1e-9)
+        const ratio = diff / base
+        if (diff < ABS_TOL || ratio < REL_TOL) continue
+        const [name, period] = k.split('|')
+        const [r] = await conn.execute(
+          'INSERT INTO `Alert` (`indicatorName`, `period`, `valueA`, `valueB`, `sourceA`, `sourceB`, `diff`, `diffRatio`, `createdAt`) VALUES (?, ?, ?, ?, ?, ?, ?, ?, NOW(3))',
+          [name, period, A.value, B.value, A.source, B.source, diff, ratio],
+        )
+        if (r.affectedRows === 1) inserted++
+      }
+    }
+  }
+  return { inserted, scanned: rows.length }
+}

server/cron.js

@@ -0,0 +1,36 @@
+import cron from 'node-cron'
+import { prisma } from './db.js'
+import mysql from 'mysql2/promise'
+import { fetchNewsList, persistNews } from '../scripts/fetchers/news.fetcher.js'
+import { checkAfterRefresh } from './alert-engine.js'
+
+function parseUrl(url) {
+  const u = new URL(url)
+  return { host: u.hostname, port: Number(u.port) || 3306, user: decodeURIComponent(u.username), password: decodeURIComponent(u.password), database: u.pathname.replace(/^\//, '') }
+}
+
+async function openConn() {
+  return mysql.createConnection(parseUrl(process.env.DATABASE_URL))
+}
+
+// 每天凌晨 3:00 (本地时间) 拉取新闻 + 跑跨源对比
+function scheduleNews() {
+  cron.schedule('0 3 * * *', async () => {
+    console.log('[cron] 3:00 触发')
+    try {
+      const list = await fetchNewsList()
+      const r = await persistNews(list)
+      console.log('[cron] 新闻入库: 新增 ' + r.inserted + ' / 跳过 ' + r.skipped)
+      const conn = await openConn()
+      try {
+        const a = await checkAfterRefresh(conn)
+        console.log('[cron] 报警检测: 新增 ' + a.inserted + ' 条 (扫描 ' + a.scanned + ')')
+      } finally { await conn.end() }
+    } catch (e) {
+      console.error('[cron] 任务失败:', e.message)
+    }
+  })
+  console.log('[cron] 已注册: 每天 03:00 拉取新闻 + 跨源报警检测')
+}
+
+scheduleNews()

server/index.js

@@ -5,6 +5,8 @@ import express from 'express'
 import cors from 'cors'
 import authRouter from './routes/auth.js'
 import dataRouter from './routes/data.js'
+import newsRouter from './routes/news.js'
+import alertsRouter from './routes/alerts.js'
 import articlesRouter from './routes/articles.js'
 
 const PORT = Number(process.env.PORT) || 3001
@@ -21,6 +23,8 @@ app.get('/api/health', (_req, res) => res.json({ ok: true, ts: Date.now() }))
 // 业务路由
 app.use('/api/auth', authRouter)
 app.use('/api', dataRouter)
+app.use('/api', newsRouter)
+app.use('/api', alertsRouter)
 app.use('/api', articlesRouter)
 
 // 静态资源 (Vite build 产物)
@@ -41,6 +45,9 @@ app.use((err, _req, res, _next) => {
   res.status(500).json({ error: err.message || '服务器内部错误' })
 })
 
+// 启动定时任务: 每天凌晨 3 点拉取新闻
+import('./cron.js').catch((e) => console.error('[cron] 加载失败:', e.message))
+
 app.listen(PORT, () => {
   console.log(`[iboard-api] listening on http://127.0.0.1:${PORT}`)
   console.log(`[iboard-api] static dist: ${HAS_DIST ? DIST_DIR : '(not built, API only)'}`)

server/routes/alerts.js

@@ -0,0 +1,24 @@
+import { Router } from 'express'
+import { prisma } from '../db.js'
+import { authRequired } from '../middleware.js'
+
+const router = Router()
+router.use(authRequired)
+
+// 报警列表: 按时间最新优先, cursor 分页 (cursor = id)
+router.get('/alerts', async (req, res, next) => {
+  try {
+    const limit = Math.min(Number(req.query.limit) || 10, 50)
+    const cursor = req.query.cursor ? Number(req.query.cursor) : null
+    const where = cursor ? { id: { lt: cursor } } : {}
+    const items = await prisma.alert.findMany({
+      where,
+      orderBy: { id: 'desc' },
+      take: limit,
+    })
+    const nextCursor = items.length === limit ? String(items[items.length - 1].id) : null
+    res.json({ items, nextCursor })
+  } catch (e) { next(e) }
+})
+
+export default router

server/routes/news.js

@@ -0,0 +1,25 @@
+import { Router } from 'express'
+import { prisma } from '../db.js'
+import { authRequired } from '../middleware.js'
+
+const router = Router()
+router.use(authRequired)
+
+// 新闻列表: 按时间最新优先, cursor 分页 (cursor = publishedAt ISO 字符串)
+// 用 prisma cursor 配合 id 兜底 (同一秒发布的新闻)
+router.get('/news', async (req, res, next) => {
+  try {
+    const limit = Math.min(Number(req.query.limit) || 10, 50)
+    const cursor = req.query.cursor || null
+    const where = cursor ? { publishedAt: { lt: new Date(cursor) } } : {}
+    const items = await prisma.news.findMany({
+      where,
+      orderBy: [{ publishedAt: 'desc' }, { id: 'desc' }],
+      take: limit,
+    })
+    const nextCursor = items.length === limit ? items[items.length - 1].publishedAt.toISOString() : null
+    res.json({ items, nextCursor })
+  } catch (e) { next(e) }
+})
+
+export default router