/* global accounting */
function ShippingTotalManager (input1) {
  this.input = input1
  this.shippingMethods = this.input.shippingMethods
  this.shipmentTotal = this.input.shipmentTotal
  this.isFreeShipping = this.input.isFreeShipping
  this.taxTotal = this.input.taxTotal
  this.nonShipmentTax = $(this.taxTotal).data('non-shipment-tax')
  this.orderTotal = this.input.orderTotal
  this.formatOptions = {
    symbol: this.shipmentTotal.data('currency'),
    decimal: this.shipmentTotal.attr('decimal-mark'),
    thousand: this.shipmentTotal.attr('thousands-separator'),
    precision: this.shipmentTotal.attr('precision')
  }
}

ShippingTotalManager.prototype.calculateShipmentTotal = function () {
  var checked = $(this.shippingMethods).filter(':checked')
  this.sum = 0
  this.tax = this.parseCurrencyToFloat(this.nonShipmentTax)
  $.each(checked, function (idx, shippingMethod) {
    this.sum += this.parseCurrencyToFloat($(shippingMethod).data('cost'))
    this.tax += this.parseCurrencyToFloat($(shippingMethod).data('tax'))
  }.bind(this))
  return this.readjustSummarySection(
    this.parseCurrencyToFloat(this.orderTotal.html()),
    this.sum,
    this.parseCurrencyToFloat(this.shipmentTotal.html()),
    this.tax,
    this.parseCurrencyToFloat(this.taxTotal.html())
  )
}

ShippingTotalManager.prototype.parseCurrencyToFloat = function (input) {
  return accounting.unformat(input, this.formatOptions.decimal)
}

ShippingTotalManager.prototype.totalShipmentAmount = function (newShipmentTotal, oldShipmentTotal) {
  var totalShipmentAmount = 0;
  if (!this.isFreeShipping.html()) {
    totalShipmentAmount = newShipmentTotal - oldShipmentTotal

    return totalShipmentAmount
  } else {
    return totalShipmentAmount
  }
}

ShippingTotalManager.prototype.readjustSummarySection = function (orderTotal, newShipmentTotal, oldShipmentTotal, newTaxTotal, oldTaxTotal) {
  var newOrderTotal = orderTotal + this.totalShipmentAmount(newShipmentTotal, oldShipmentTotal) + (newTaxTotal - oldTaxTotal)
  this.taxTotal.html(accounting.formatMoney(newTaxTotal, this.formatOptions))
  this.shipmentTotal.html(accounting.formatMoney(newShipmentTotal, this.formatOptions))
  return this.orderTotal.html(accounting.formatMoney(accounting.toFixed(newOrderTotal, 10), this.formatOptions))
}

ShippingTotalManager.prototype.bindEvent = function () {
  this.shippingMethods.change(function () {
    return this.calculateShipmentTotal()
  }.bind(this))
}

Harpiya.ready(function ($) {
  var input = {
    orderTotal: $('#summary-order-total'),
    taxTotal: $('[data-hook="tax-total"]'),
    shipmentTotal: $('[data-hook="shipping-total"]'),
    shippingMethods: $('input[data-behavior="shipping-method-selector"]'),
    isFreeShipping: $('[data-hook="is-free-shipping"]')
  }
  return new ShippingTotalManager(input).bindEvent()
})