'use strict';

(function($) {
  var woopq_timeout = null;

  $(function() {
    woopq_init_qty();
  });

  $(document).on('keyup', '[name="quantity"]', function() {
    if ($(this).closest('.variations_form').length &&
        $(this).closest('.woopq-quantity').length) {
      $(this).closest('.variations_form').data('woopq_changed', 1);
    }
  });

  $(document).
      on('click touch',
          '.woopq-quantity-input-plus, .woopq-quantity-input-minus',
          function() {
            if ($(this).closest('.variations_form').length &&
                $(this).closest('.woopq-quantity').length) {
              $(this).closest('.variations_form').data('woopq_changed', 1);
            }
          });

  $(document).on('found_variation', function(e, t) {
    var $quantity = $(e['target']).
        closest('.variations_form').
        find('[name="quantity"]').
        closest('.woopq-quantity');
    var value = parseFloat($quantity.find('.qty').val());
    var changed = $(e['target']).
        closest('.variations_form').
        data('woopq_changed');

    if (t.woopq_qty != undefined) {
      $quantity.replaceWith(woopq_decode_entities(t.woopq_qty));
    }

    if (changed === undefined) {
      // did not change qty
      woopq_init_qty_e($(e['target']).
              closest('.variations_form').
              find('[name="quantity"]').
              closest('.woopq-quantity'), t.woopq_min, t.woopq_max, t.woopq_step,
          t.woopq_value);
    } else {
      woopq_init_qty_e($(e['target']).
              closest('.variations_form').
              find('[name="quantity"]').
              closest('.woopq-quantity'), t.woopq_min, t.woopq_max, t.woopq_step,
          value);
    }

    $(document.body).trigger('woopq_replace_qty');
    //TODO: check if is woobt/ woosb/ woosg/ woofs
  });

  $(document).on('reset_data', function(e) {
    var $quantity = $(e['target']).
        closest('.variations_form').
        find('[name="quantity"]').
        closest('.woopq-quantity');
    var value = parseFloat($quantity.find('.qty').val());
    var changed = $(e['target']).
        closest('.variations_form').
        data('woopq_changed');
    var variable_qty = $(e['target']).
        closest('.variations_form').
        find('.woopq-quantity-variable').
        attr('data-qty');

    if (variable_qty != undefined) {
      $quantity.replaceWith(woopq_decode_entities(variable_qty));
    }

    if (changed === undefined) {
      woopq_init_qty_e($(e['target']).
          closest('.variations_form').
          find('[name="quantity"]').
          closest('.woopq-quantity'), null, null, null, null);
    } else {
      woopq_init_qty_e($(e['target']).
          closest('.variations_form').
          find('[name="quantity"]').
          closest('.woopq-quantity'), null, null, null, value);
    }

    $(document.body).trigger('woopq_reset_qty');
    //TODO: check if is woobt/ woosb/ woosg/ woofs
  });

  $(document).on('woosq_loaded', function() {
    $('#woosq-popup ').find('.woopq-quantity').each(function() {
      woopq_init_qty_e($(this));
    });
  });

  if (woopq_vars.auto_correct === 'out_of_focus') {
    $(document).on('focusout', '.woopq-quantity input.qty', function() {
      var $this = $(this);

      woopq_disable_atc($this);
      woopq_check_qty($this);
    });
  } else {
    $(document).on('keyup', '.woopq-quantity input.qty', function() {
      var $this = $(this);

      woopq_disable_atc($this);

      if (woopq_timeout != null) clearTimeout(woopq_timeout);
      woopq_timeout = setTimeout(woopq_check_qty, woopq_vars.timeout, $this);
    });
  }

  $(document).
      on('click touch',
          '.woopq-quantity-input-plus, .woopq-quantity-input-minus',
          function() {
            // get values
            var $qty = $(this).
                    closest('.woopq-quantity-input').
                    find('input.qty'), val = parseFloat($qty.val()),
                max = parseFloat($qty.attr('max')),
                min = parseFloat($qty.attr('min')), step = $qty.attr('step');

            woopq_disable_atc($qty);

            // format values
            if (!val || val === '' || val === 'NaN') {
              val = 0;
            }

            if (max === '' || max === 'NaN') {
              max = '';
            }

            if (min === '' || min === 'NaN') {
              min = 0;
            }

            if (step === 'any' || step === '' || step === undefined ||
                parseFloat(step) === 'NaN') {
              step = 1;
            } else {
              step = parseFloat(step);
            }

            // change the value
            if ($(this).is('.woopq-quantity-input-plus')) {
              if (max && (val + step >= max)) {
                $qty.val(max);
              } else {
                $qty.val((val + step).toFixed(woopq_decimal_places(step)));
              }
            } else {
              if (min && (val - step <= min)) {
                $qty.val(min);
              } else if (val > 0) {
                $qty.val((val - step).toFixed(woopq_decimal_places(step)));
              }
            }

            woopq_check_qty($qty);
          });
})(jQuery);

function woopq_init_qty(min = null, max = null, step = null, val = null) {
  jQuery('.woopq-quantity-hidden').each(function() {
    var $this = jQuery(this);
    var $this_atc = $this.closest('form.cart').find('[name="add-to-cart"]');

    if ($this_atc.length) {
      if ($this.hasClass('woopq-quantity-disabled')) {
        $this_atc.addClass('woopq-atc-disabled');
      } else {
        $this_atc.removeClass('woopq-atc-disabled');
      }
    }
  });

  jQuery('.woopq-quantity').each(function() {
    woopq_init_qty_e(jQuery(this), min, max, step, val);
  });
}

function woopq_init_qty_e($e, min = null, max = null, step = null, val = null) {
  var $qty = $e.find('.qty');
  var _min = parseFloat((min != null) ? min : $e.attr('data-min'));
  var _max = parseFloat((max != null) ? max : $e.attr('data-max'));
  var _step = parseFloat((step != null) ? step : $e.attr('data-step'));
  var _val = parseFloat((val != null) ? val : $e.attr('data-value'));

  woopq_disable_atc($qty);

  $qty.attr('min', _min).attr('max', _max).attr('step', _step).val(_val);

  jQuery(document.body).
      trigger('woopq_init_qty', [$qty, _val, _min, _max, _step]);

  woopq_check_qty($qty);
}

function woopq_check_qty($qty) {
  var val = parseFloat($qty.val());
  var min = parseFloat($qty.attr('min'));
  var max = parseFloat($qty.attr('max'));
  var step = parseFloat($qty.attr('step'));
  var fix = Math.pow(10, Number(woopq_decimal_places(step)) + 2);

  if ((step === '') || isNaN(step) || step <= 0) {
    step = 1;
  }

  if ((min === '') || isNaN(min) || min < 0) {
    min = step;
  }

  if ((val === '') || isNaN(val) || val < 0 || val < min) {
    val = min;
  }

  var remainder_before = woopq_float_remainder(
      Math.round(fix * (val - min)) / fix, step);

  if (remainder_before > 0) {
    if (woopq_vars.rounding === 'up') {
      val = (val * fix - remainder_before * fix + step * fix) / fix;
    } else {
      val = (val * fix - remainder_before * fix) / fix;
    }
  }

  if (!isNaN(min) && (val < min)) {
    val = min;
  }

  if (!isNaN(max) && (val > max)) {
    val = max;
  }

  var remainder = woopq_float_remainder(Math.round(fix * (val - min)) / fix,
      step);

  if (remainder > 0) {
    val = (val * fix - remainder * fix) / fix;
  }

  $qty.val(val).trigger('change');
  woopq_enable_atc($qty);

  jQuery(document.body).trigger('woopq_check_qty', [$qty, val, min, max, step]);
}

function woopq_enable_atc($qty) {
  $qty.closest('form.cart').
      find('.single_add_to_cart_button').
      removeClass('woopq-disabled');
}

function woopq_disable_atc($qty) {
  $qty.closest('form.cart').
      find('.single_add_to_cart_button').
      addClass('woopq-disabled');
}

function woopq_decimal_places(num) {
  var match = ('' + num).match(/(?:\.(\d+))?(?:[eE]([+-]?\d+))?$/);

  if (!match) {
    return 0;
  }

  return Math.max(0, // Number of digits right of decimal point.
      (match[1] ? match[1].length : 0)
      // Adjust for scientific notation.
      - (match[2] ? +match[2] : 0));
}

function woopq_float_remainder(val, step) {
  var valDecCount = (val.toString().split('.')[1] || '').length;
  var stepDecCount = (step.toString().split('.')[1] || '').length;
  var decCount = valDecCount > stepDecCount ? valDecCount : stepDecCount;
  var valInt = parseInt(val.toFixed(decCount).replace('.', ''));
  var stepInt = parseInt(step.toFixed(decCount).replace('.', ''));

  return (valInt % stepInt) / Math.pow(10, decCount);
}

function woopq_decode_entities(encodedString) {
  var textArea = document.createElement('textarea');
  textArea.innerHTML = encodedString;

  return textArea.value;
}