import Helper from './helper.js'
import { Low, JSONFile } from 'lowdb'
import { cloudDBAdapter, mongoDB, mongoDBV2 } from './DB_Adapters/index.js'
import lodash from 'lodash'

const databaseUrl = Helper.opts['db'] || ''
const databaseAdapter = /https?:\/\//.test(databaseUrl) ?
  new cloudDBAdapter(databaseUrl) : /mongodb(\+srv)?:\/\//i.test(databaseUrl) ?
    (Helper.opts['mongodbv2'] ? new mongoDBV2(databaseUrl) :
      new mongoDB(databaseUrl)) :
    new JSONFile(`${Helper.opts._[0] ? Helper.opts._[0] + '_' : ''}database.json`)
/** @typedef {{ [Key: string]: {[Key: string]: any } }} DatabaseData */
let database = /** @type {Low<DatabaseData> & { chain: import('lodash').ObjectChain<DatabaseData>, _read: Promise<void> | void }} */
  (new Low(databaseAdapter))

loadDatabase()

async function loadDatabase() {
  // If database is processed to be loaded from cloud, wait for it to be done
  if (database._read) await database._read
  if (database.data !== null) return database.data
  database._read = database.read().catch(console.error)
  await database._read
  console.log('- Database loaded -')
  database.data = {
    users: {},
    chats: {},
    stats: {},
    msgs: {},
    sticker: {},
    settings: {},
    ...(database.data || {})
  }
  database.chain = lodash.chain(database.data)

  return database.data
}


export {
  databaseUrl,
  databaseAdapter,
  database,
  loadDatabase
}

export default database