import { hasCSSTOMSupport } from 'jss';

var px = hasCSSTOMSupport ? window.CSS.px : 'px';
var ms = hasCSSTOMSupport ? window.CSS.ms : 'ms';
var percent = hasCSSTOMSupport ? window.CSS.percent : '%';
/**
 * Generated jss-plugin-default-unit CSS property units
 *
 * @type object
 */

var defaultUnits = {
  // Animation properties
  'animation-delay': ms,
  'animation-duration': ms,
  // Background properties
  'background-position': px,
  'background-position-x': px,
  'background-position-y': px,
  'background-size': px,
  // Border Properties
  border: px,
  'border-bottom': px,
  'border-bottom-left-radius': px,
  'border-bottom-right-radius': px,
  'border-bottom-width': px,
  'border-left': px,
  'border-left-width': px,
  'border-radius': px,
  'border-right': px,
  'border-right-width': px,
  'border-top': px,
  'border-top-left-radius': px,
  'border-top-right-radius': px,
  'border-top-width': px,
  'border-width': px,
  // Margin properties
  margin: px,
  'margin-bottom': px,
  'margin-left': px,
  'margin-right': px,
  'margin-top': px,
  // Padding properties
  padding: px,
  'padding-bottom': px,
  'padding-left': px,
  'padding-right': px,
  'padding-top': px,
  // Mask properties
  'mask-position-x': px,
  'mask-position-y': px,
  'mask-size': px,
  // Width and height properties
  height: px,
  width: px,
  'min-height': px,
  'max-height': px,
  'min-width': px,
  'max-width': px,
  // Position properties
  bottom: px,
  left: px,
  top: px,
  right: px,
  // Shadow properties
  'box-shadow': px,
  'text-shadow': px,
  // Column properties
  'column-gap': px,
  'column-rule': px,
  'column-rule-width': px,
  'column-width': px,
  // Font and text properties
  'font-size': px,
  'font-size-delta': px,
  'letter-spacing': px,
  'text-indent': px,
  'text-stroke': px,
  'text-stroke-width': px,
  'word-spacing': px,
  // Motion properties
  motion: px,
  'motion-offset': px,
  // Outline properties
  outline: px,
  'outline-offset': px,
  'outline-width': px,
  // Perspective properties
  perspective: px,
  'perspective-origin-x': percent,
  'perspective-origin-y': percent,
  // Transform properties
  'transform-origin': percent,
  'transform-origin-x': percent,
  'transform-origin-y': percent,
  'transform-origin-z': percent,
  // Transition properties
  'transition-delay': ms,
  'transition-duration': ms,
  // Alignment properties
  'vertical-align': px,
  'flex-basis': px,
  // Some random properties
  'shape-margin': px,
  size: px,
  // Grid properties
  grid: px,
  'grid-gap': px,
  'grid-row-gap': px,
  'grid-column-gap': px,
  'grid-template-rows': px,
  'grid-template-columns': px,
  'grid-auto-rows': px,
  'grid-auto-columns': px,
  // Not existing properties.
  // Used to avoid issues with jss-plugin-expand integration.
  'box-shadow-x': px,
  'box-shadow-y': px,
  'box-shadow-blur': px,
  'box-shadow-spread': px,
  'font-line-height': px,
  'text-shadow-x': px,
  'text-shadow-y': px,
  'text-shadow-blur': px
};

/**
 * Clones the object and adds a camel cased property version.
 */

function addCamelCasedVersion(obj) {
  var regExp = /(-[a-z])/g;

  var replace = function replace(str) {
    return str[1].toUpperCase();
  };

  var newObj = {};

  for (var _key in obj) {
    newObj[_key] = obj[_key];
    newObj[_key.replace(regExp, replace)] = obj[_key];
  }

  return newObj;
}

var units = addCamelCasedVersion(defaultUnits);
/**
 * Recursive deep style passing function
 *
 * @param {String} current property
 * @param {(Object|Array|Number|String)} property value
 * @param {Object} options
 * @return {(Object|Array|Number|String)} resulting value
 */

function iterate(prop, value, options) {
  if (!value) return value;

  if (Array.isArray(value)) {
    for (var i = 0; i < value.length; i++) {
      // $FlowFixMe
      value[i] = iterate(prop, value[i], options);
    }
  } else if (typeof value === 'object') {
    if (prop === 'fallbacks') {
      for (var innerProp in value) {
        value[innerProp] = iterate(innerProp, value[innerProp], options);
      }
    } else {
      for (var _innerProp in value) {
        value[_innerProp] = iterate(prop + "-" + _innerProp, value[_innerProp], options);
      }
    }
  } else if (typeof value === 'number') {
    if (options[prop]) {
      return "" + value + options[prop];
    }

    if (units[prop]) {
      return typeof units[prop] === 'function' ? units[prop](value).toString() : "" + value + units[prop];
    }

    return value.toString();
  }

  return value;
}

/**
 * Add unit to numeric values.
 */
function defaultUnit(options) {
  if (options === void 0) {
    options = {};
  }

  var camelCasedOptions = addCamelCasedVersion(options);

  function onProcessStyle(style, rule) {
    if (rule.type !== 'style') return style;

    for (var prop in style) {
      style[prop] = iterate(prop, style[prop], camelCasedOptions);
    }

    return style;
  }

  function onChangeValue(value, prop) {
    // $FlowFixMe
    return iterate(prop, value, camelCasedOptions);
  }

  return {
    onProcessStyle: onProcessStyle,
    onChangeValue: onChangeValue
  };
}

export default defaultUnit;
