const auth = require('@feathersjs/authentication');
const errors = require('@feathersjs/errors');
const bcrypt = require('bcryptjs');

const comparePasswords = (oldPassword, password) => new Promise((resolve, reject) => {
  bcrypt.compare(oldPassword, password, (err, data1) => {
    if(err || !data1) return reject();
    return resolve();
  });
});

module.exports = function() {
  const app = this;

  // Add authentication/changePassword service
  const changePasswordService = app.use('authentication/changePassword', {
    async create(data, params) {
      // const user = await app.service('users').get(params.payload.userId);
      const user = params.user;
      if(!data.password) throw new errors.BadRequest(`Missing password`);
      if(!data.oldPassword) throw new errors.BadRequest(`Missing oldPassword`);
      try {
        await comparePasswords(data.oldPassword, user.password);
      }
      catch(e) {
        throw new errors.BadRequest('Current password wrong');
      }
      const newUser = await app.service('users').patch(user._id, {password: data.password});
      delete newUser.password; // never send pwd to client
      return newUser;
    }
  });

  // Add jwt authentication
  changePasswordService.hooks({
    before: auth.hooks.authenticate('jwt')
  });
};