const Router = require('koa-router')
const koaBody = require('koa-body')
const {
  chkObject,
  resObject,
  APIError,
  genError,
  checkSession
} = require('@libs/route-utils')
const DB = require('@libs/database')
const r = new Router()
const {
  comparePassword
} = require('@libs/tools')

r.use(async (c, n) => {
  c.obj = {}
  c.db = await DB.connect()
  c.chkBody = chkObject.bind(c.request)

  let obj = null
  try {
    await n()
  } catch (err) {
    console.log(err)
    obj = resObject(err instanceof APIError ? err.resKey : 'InternalError', err.apiMsg || null, err.msgCode || null)
  }

  if (Object.keys(c.obj).length > 0 && 'status' in c.obj && 'obj' in c.obj) {
    c.status = c.obj.status
    c.body = c.obj.obj
  }
  if (obj !== null) {
    c.status = obj.status
    c.body = obj.obj
  }

  c.db.release()
})

r.post('/login', koaBody(), async (c, n) => {
  if (!c.chkBody('account', 'string') || !c.chkBody('password', 'string')) throw genError('DataFormat')

  let text = `select * from "public"."account" where "account" = $1 limit 1`
  let values = [c.request.body.account]
  let userAcc = await c.db.query({text, values})
  if (userAcc.rowCount === 0) throw genError('NotFound', 'user not found')
  if (!comparePassword(c.request.body.password, userAcc.rows[0].password)) throw genError('DataFormat', 'account or password error')

  let user = userAcc.rows[0]
  delete user.password
  c.session.user = user
  c.session.loginType = 'system'

  c.obj = resObject('Success')
})

r.get('/session', checkSession, async (c, n) => {
  c.obj = resObject('Success')
})

r.use('/twitch', require('./twitch').routes())

module.exports = r