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'
import { ApizeroError, oil, history } from './apizero/index.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')
}

// 每天凌晨 4:00 抓浙江油价历史
//   逻辑: 拉今年 schedule, 检查待定且 <= 昨天的调价日, 命中就抓 price?province=浙江 存库
//   - 0 命中: 不调 apizero (省配额)
//   - >0 命中: 调一次, 4 个油品批量入库 (unique 兜底去重)
function scheduleOilHistory() {
  cron.schedule('0 4 * * *', async () => {
    console.log('[cron] 4:00 油价历史触发')
    try {
      const year = new Date().getFullYear()
      const sched = await oil.getSchedule(year)
      const list = sched.schedule || []
      // 待定 且 日期 <= 昨天
      const today = new Date()
      today.setHours(0, 0, 0, 0)
      const yesterdayMs = today.getTime() - 86400000
      const pendingPast = list.filter((it) => {
        if (it.status !== '待定') return false
        const t = new Date(it.date + 'T00:00:00').getTime()
        return Number.isFinite(t) && t <= yesterdayMs
      })
      console.log('[cron] 待定且已过的调价日: ' + pendingPast.length + ' 个')
      if (pendingPast.length === 0) {
        console.log('[cron] 油价历史: 0 命中, 跳过 apizero 调用')
        return
      }
      const r = await history.fetchAndStore()
      console.log('[cron] 油价历史入库: 新增 ' + r.inserted + ' / 跳过 ' + r.skipped + ' (date=' + r.date + ')')
    } catch (e) {
      if (e instanceof ApizeroError) {
        console.error('[cron] 油价历史 apizero 错误: code=' + e.code + ' msg=' + e.message)
      } else {
        console.error('[cron] 油价历史任务失败:', e.message)
      }
    }
  })
  console.log('[cron] 已注册: 每天 04:00 浙江油价历史抓取')
}

scheduleNews()
scheduleOilHistory()