const cron = require('cron')
const DB = require('./libs/database')
const fbParser = require('./libs/facebook-pageparse')
const {
  pushMessage
} = require('./libs/line-message')

new cron.CronJob({ // eslint-disable-line
  cronTime: '00 */2 * * * *',
  onTick: async () => {
    console.log('run cron')
    let db = await DB.connect()
    let text = `select "pageid", "groupid", "lastpost", "notify", "notify_tmpl" from "public"."page_group_rt"`
    let res = await db.query({
      text
    })
    console.log('rows length :::: ', res.rowCount)
    if (res.rows.legnth === 0) return
    await new Promise(resolve => {
      let count = res.rowCount
      res.rows.forEach(t => {
        fbParser.getLastPost(t.pageid)
          .then((data) => {
            let n = Math.floor(Date.now() / 1000)
            if (t.lastpost === data.id || data.time < (n - 10 * 60)) {
              if (!--count) resolve(null)
              return
            }
            t.lastpost = data.id
            let msg = t.notify_tmpl || ''
            if (typeof msg !== 'string' || msg.trim().length === 0) {
              msg = `${data.txt}\n${data.link}`
            } else {
              msg = msg.replace(/{link}/, data.link).replace(/{txt}/, data.txt).replace(/\\n/, '\n')
            }
            if (t.notify) {
              pushMessage(t.groupid, msg).then(() => {}).catch(() => {})
            }
            let text = `update "public"."page_group_rt" set "lastpost" = $1, "mtime" = now() where "pageid" = $2 and "groupid" = $3`
            let values = [data.id, t.pageid, t.groupid]
            db.query({
              text,
              values
            }).then(() => {}).catch(() => {})
            if (!--count) resolve(null)
          })
          .catch(() => {
            if (!--count) resolve(null)
          })
      })
    })

    db.release()
  },
  start: true,
  timeZone: 'Asia/Taipei'
})