const Router = require('koa-router')
const r = new Router()
const {
  getRaw
} = require('@libs/middleware')
const DB = require('@libs/database')
const api = require('@libs/api-action')
// const config = require('../../config')

r.get('/webhook', async (c, n) => {
  let mode = c.query['hub.mode']
  let token = c.query['hub.secret']
  let challenge = c.query['hub.challenge']
  console.log(mode, token, challenge)
  console.log(c.headers)
  if (mode) {
    if (mode === 'subscribe') {
      c.status = 200
      c.body = challenge
    } else {
      c.status = 403
      c.body = ''
    }
  }
})

r.post('/webhook', getRaw, async (c, n) => {
  // middleware
  c.db = await DB.connect()

  try {
    await n()
  } catch (err) {
    console.log(err)
  }

  c.db.release()
  c.body = 'success'
  c.status = 200
}, async (c, n) => {
  console.log(JSON.stringify(c.request.body, null, 2))
  if (!('data' in c.request.body) || !Array.isArray(c.request.body.data)) return
  if (c.request.body.data.length === 0) return // length > 0 live, length === 0 down
  let data = c.request.body.data[0]
  let uid = c.query['uid'] || ''
  let type = c.query['type'] || ''

  if (!uid || !type) return

  let text = `select rt."line" as group, rt."twitch" as twitch, rt."tmpl" as tmpl, twitch."name" as user from "public"."line_twitch_rt" rt
    left join "public"."twitch_channel" twitch
    on twitch."id" = rt."twitch"
    left join "public"."line_group" line
    on line."id" = rt."line"
    where
    line."notify" = true
    and twitch."id" = $1
    and rt."type" = $2`
  let values = [uid, type]
  let twch = await c.db.query({
    text,
    values
  })
  if (twch.rowCount === 0) return

  let chLink = `https://twitch.tv/`

  for (let i in twch.rows) {
    let tmp = twch.rows[i]
    let msg = tmp.tmpl || ''
    let link = chLink + tmp.user
    if (typeof msg !== 'string' || msg.trim().length === 0) {
      msg = `${data.title}\n${link}`
    } else {
      msg = msg.replace(/{link}/, link).replace(/{txt}/, data.title).replace(/\\n/, '\n')
    }

    await api.line.pushMessage(tmp.group, msg).then(() => { }).catch(() => { })
  }
})

module.exports = r