/**
 * Created by mdonnel on 22/03/2017.
 */
const $ = require('jquery');
const _ = require('underscore');
const Backbone = require('backbone');

const FxModel = Backbone.Model.extend({
  'initialize': function () {
    this.set('url', '/fx');
    this.set('fxdata', {});
    this.update();
  },
  'update': function () {
    this.getFX();
    const now = new Date;
    const mod = 900000 - (now.getTime() % 900000);

    const fxUpdateFn = function() {
      this.update();
    };
    setTimeout(fxUpdateFn.bind(this), mod + 10);
  },
  'getFX': function() {
    const url = this.get('url');
    const self = this;
    $.ajax({
      'type': 'GET',
      'url': url,
      'data': '',
      'dataType': 'json',

      'timeout': 10000,

      'headers': {
        'Access-Control-Allow-Origin': '*',
        'Access-Control-Allow-Methods': 'PUT, GET, POST, DELETE, OPTIONS',
        'Access-Control-Allow-Headers': 'Content-Type'

      },
      'success': function(data) {
        let fxdata = {};
        if (data.rates !== undefined) {
          const gpbex = (1 / data.rates.GBP);
          const sekex = (gpbex * data.rates.SEK);
          fxdata = {
            'usd': 1,
            'gbp': data.rates.GBP,
            'sek': data.rates.SEK,
            'gpbe': gpbex,
            'sekex': sekex
          };
        }

        self.set('fxdata', fxdata);
      },
      'error': function(xhr, type) {
        console.log('ajax error');
        console.log(xhr);
        console.log(type);
      }
    });
  }
});

const FxView = Backbone.View.extend({
  'tagName': 'div',
  'initialize': function () {
    _.bindAll(this, 'render');
    this.model.bind('change', this.render);
    this.$fx = $('#fx');
  },
  'render': function () {
    const fxdata = this.model.get('fxdata');
    this.$fx.html(`£1 = $${parseFloat(fxdata.gpbe.toFixed(2))} = ${ parseFloat(fxdata.sekex.toFixed(2))} SEK`);
  }
});

module.exports = { FxModel, FxView };