DemocracyOS/app

import bus from 'bus'
import request from '../request/request'
import Stateful from '../stateful/stateful'

export default class User extends Stateful {
  /**
   * User
   *
   * @param {String} path user's load path
   * @return {User} `User` instance
   * @api public
   */

  constructor (path) {
    super()
    this.$_state = 'unloaded'
    this.$_path = path
  }

  /**
   * Loads user from path
   *
   * @param {String} path user's load path
   * @return {User} `User` instance.
   * @api public
   */

  load (path) {
    if (this.$_path === path && this.state() === 'loading') return this

    this.$_path = path || this.$_path
    this.state('loading')
    request
      .get('/api/user/'.concat(this.$_path))
      .end((err, res) => {
        if (err || !res.ok) {
          this.state('unloaded')
          return this._handleRequestError(err || res.error)
        }

        var u = res.body

        if (!(u.id || u._id)) {
          this.state('unloaded')
          return this._handleRequestError('User not found')
        }

        if (path === 'me') bus.emit('login')

        this.set(u)
      })

    return this
  }

  /**
   * Set user attributes
   *
   * @param {Object} User attributes.
   * @return {User} `User` instance.
   * @api public
   */

  set (attrs) {
    var self = this

    for (var prop in attrs) {
      if (attrs.hasOwnProperty(prop)) {
        self[prop] = attrs[prop]
      }
    }

    self.state('loaded')

    return this
  }

  /**
   * Returns wether the receiver is logged (i.e.: sign in)
   *
   * @return {Boolean}
   * @api public
   */

  logged () {
    return !!this.id
  }

  /**
   * Unloads instance and notifies observers.
   *
   * @return {User}
   * @api public
   */

  unload () {
    this.cleanup()
    this.$_path = null

    request
      .del('/api/signin')
      .send()
      .end()

    this.state('unloaded')
    return this
  }

  /**
   * Test if user is admin of a given forum
   *
   * @api public
   */

  isOwner (forum) {
    return forum.owner.id === this.id
  }

  /**
   * Cleans up user
   *
   * @api private
   */

  cleanup () {
    for (let i in this) {
      if (i === '_eventCollection') continue
      if (i.charAt(0) === '$') continue
      if (!this.hasOwnProperty(i)) continue
      if (typeof this[i] === 'function') continue
      delete this[i]
    }
  }

  /**
   * Returns profile picture
   *
   * @api private
   */

  profilePicture () {
    return this.avatar
  }

  /**
   * Handle error from requests
   *
   * @param {Object} err from request
   * @api private
   */

  _handleRequestError (err) {
    // FIXME: change this off for handling it on subscribers
    // Shut ready's down
    this.off('ready')
    this.emit('error', err)
  }
}