import { Strategy as FacebookStrategy } from 'passport-facebook';

import facebookConfig from '../../config/config.facebook';
import { getEnabled as GetEnabled } from '../../config/functions/getEnabled';
import { Database } from '../../classes/Database';
import FacebookStrategyMongodb from './strategy.facebook.mongodb';
import FacebookStrategyDefault from './strategy.facebook.default';

export default (
  config = facebookConfig,
  getEnabled = GetEnabled,
  facebookStrategyMongodb = FacebookStrategyMongodb,
  facebookStrategyDefault = FacebookStrategyDefault
): any => {
  if ((config = facebookConfig)) {
    return new FacebookStrategy(
      {
        clientID: config.clientId,
        clientSecret: config.clientSecret,
        callbackURL: config.callbackURL,
        profileFields: [
          'id',
          'displayName',
          'email',
          'birthday',
          'friends',
          'first_name',
          'last_name',
          'middle_name',
          'gender',
          'link'
        ],
        passReqToCallback: true
      },
      async (req, accessToken, refreshToken, profile, done) => {
        if (getEnabled(Database.mongodb)) {
          return facebookStrategyMongodb(
            req,
            accessToken,
            refreshToken,
            profile,
            done
          );
        } else {
          return facebookStrategyDefault(
            req,
            accessToken,
            refreshToken,
            profile,
            done
          );
        }
      }
    );
  } else {
    throw 'Config for Facebook Strategy supplied';
  }
};