const { setting: Setting } = require('../models')
const config = require('config')
const consola = require('consola')
const path = require('path')
const fs = require('fs')
const package = require('../../../package.json')

const settingsController = {
  settings: { initialized: false },
  user_locale: {},
  secretSettings: {},

  async initialize () {
    if (!settingsController.settings.initialized) {

      // initialize instance settings from db
      // note that this is done only once when the server starts
      // and not for each request (it's a kind of cache)!
      const settings = await Setting.findAll()
      settingsController.settings.initialized = true
      settings.forEach( s => {
        if (s.is_secret) {
          settingsController.secretSettings[s.key] = s.value
        } else {
          settingsController.settings[s.key] = s.value
        }
      })

      // initialize user_locale
      if (config.user_locale && fs.existsSync(path.resolve(config.user_locale))) {
        const user_locale = fs.readdirSync(path.resolve(config.user_locale))
        user_locale.forEach( async f => {
          consola.info(`Loading user locale ${f}`)
          const locale = path.basename(f, '.js')
          settingsController.user_locale[locale] =
            (await import(path.resolve(config.user_locale, f))).default
        })
      }

    }
  },

  async set(key, value, is_secret=false) {
    try {
      await Setting.findOrCreate({
        where: { key },
        defaults: { value, is_secret }
      }).spread((setting, created) => {
        if (!created) return setting.update({ value, is_secret })
      })
      settingsController[is_secret?'secretSettings':'settings'][key]=value
      return true
    } catch(e) {
      console.error(e)
      return false
    }
  },

  async getUserLocale(req, res) {
    // load user locale specified in configuration
    res.json(settingsController.user_locale)
  },

  async setRequest(req, res) {
    const { key, value, is_secret } = req.body
    const ret = await settingsController.set(key, value, is_secret)
    if (ret) res.sendStatus(200)
    else res.sendStatus(400)
  },

  getAllRequest(req, res) {
    // get public settings and public configuration
    const settings = {
      ...settingsController.settings,
      baseurl: config.baseurl,
      title: config.title,
      description: config.description,
      version: package.version
    }
    res.json(settings)
  },
}

setTimeout(settingsController.initialize, 200)
module.exports = settingsController