import { parse, icon } from '@fortawesome/fontawesome-svg-core';
import PropTypes from 'prop-types';
import React from 'react';

function ownKeys(object, enumerableOnly) {
  var keys = Object.keys(object);

  if (Object.getOwnPropertySymbols) {
    var symbols = Object.getOwnPropertySymbols(object);
    enumerableOnly && (symbols = symbols.filter(function (sym) {
      return Object.getOwnPropertyDescriptor(object, sym).enumerable;
    })), keys.push.apply(keys, symbols);
  }

  return keys;
}

function _objectSpread2(target) {
  for (var i = 1; i < arguments.length; i++) {
    var source = null != arguments[i] ? arguments[i] : {};
    i % 2 ? ownKeys(Object(source), !0).forEach(function (key) {
      _defineProperty(target, key, source[key]);
    }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) {
      Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key));
    });
  }

  return target;
}

function _typeof(obj) {
  "@babel/helpers - typeof";

  return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) {
    return typeof obj;
  } : function (obj) {
    return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
  }, _typeof(obj);
}

function _defineProperty(obj, key, value) {
  if (key in obj) {
    Object.defineProperty(obj, key, {
      value: value,
      enumerable: true,
      configurable: true,
      writable: true
    });
  } else {
    obj[key] = value;
  }

  return obj;
}

function _objectWithoutPropertiesLoose(source, excluded) {
  if (source == null) return {};
  var target = {};
  var sourceKeys = Object.keys(source);
  var key, i;

  for (i = 0; i < sourceKeys.length; i++) {
    key = sourceKeys[i];
    if (excluded.indexOf(key) >= 0) continue;
    target[key] = source[key];
  }

  return target;
}

function _objectWithoutProperties(source, excluded) {
  if (source == null) return {};

  var target = _objectWithoutPropertiesLoose(source, excluded);

  var key, i;

  if (Object.getOwnPropertySymbols) {
    var sourceSymbolKeys = Object.getOwnPropertySymbols(source);

    for (i = 0; i < sourceSymbolKeys.length; i++) {
      key = sourceSymbolKeys[i];
      if (excluded.indexOf(key) >= 0) continue;
      if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue;
      target[key] = source[key];
    }
  }

  return target;
}

function _toConsumableArray(arr) {
  return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread();
}

function _arrayWithoutHoles(arr) {
  if (Array.isArray(arr)) return _arrayLikeToArray(arr);
}

function _iterableToArray(iter) {
  if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter);
}

function _unsupportedIterableToArray(o, minLen) {
  if (!o) return;
  if (typeof o === "string") return _arrayLikeToArray(o, minLen);
  var n = Object.prototype.toString.call(o).slice(8, -1);
  if (n === "Object" && o.constructor) n = o.constructor.name;
  if (n === "Map" || n === "Set") return Array.from(o);
  if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
}

function _arrayLikeToArray(arr, len) {
  if (len == null || len > arr.length) len = arr.length;

  for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];

  return arr2;
}

function _nonIterableSpread() {
  throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}

// Get CSS class list from a props object
function classList(props) {
  var _classes;

  var beat = props.beat,
      fade = props.fade,
      beatFade = props.beatFade,
      bounce = props.bounce,
      shake = props.shake,
      flash = props.flash,
      spin = props.spin,
      spinPulse = props.spinPulse,
      spinReverse = props.spinReverse,
      pulse = props.pulse,
      fixedWidth = props.fixedWidth,
      inverse = props.inverse,
      border = props.border,
      listItem = props.listItem,
      flip = props.flip,
      size = props.size,
      rotation = props.rotation,
      pull = props.pull; // map of CSS class names to properties

  var classes = (_classes = {
    'fa-beat': beat,
    'fa-fade': fade,
    'fa-beat-fade': beatFade,
    'fa-bounce': bounce,
    'fa-shake': shake,
    'fa-flash': flash,
    'fa-spin': spin,
    'fa-spin-reverse': spinReverse,
    'fa-spin-pulse': spinPulse,
    'fa-pulse': pulse,
    'fa-fw': fixedWidth,
    'fa-inverse': inverse,
    'fa-border': border,
    'fa-li': listItem,
    'fa-flip': flip === true,
    'fa-flip-horizontal': flip === 'horizontal' || flip === 'both',
    'fa-flip-vertical': flip === 'vertical' || flip === 'both'
  }, _defineProperty(_classes, "fa-".concat(size), typeof size !== 'undefined' && size !== null), _defineProperty(_classes, "fa-rotate-".concat(rotation), typeof rotation !== 'undefined' && rotation !== null && rotation !== 0), _defineProperty(_classes, "fa-pull-".concat(pull), typeof pull !== 'undefined' && pull !== null), _defineProperty(_classes, 'fa-swap-opacity', props.swapOpacity), _classes); // map over all the keys in the classes object
  // return an array of the keys where the value for the key is not null

  return Object.keys(classes).map(function (key) {
    return classes[key] ? key : null;
  }).filter(function (key) {
    return key;
  });
}

// Camelize taken from humps
// humps is copyright © 2012+ Dom Christie
// Released under the MIT license.
// Performant way to determine if object coerces to a number
function _isNumerical(obj) {
  obj = obj - 0; // eslint-disable-next-line no-self-compare

  return obj === obj;
}

function camelize(string) {
  if (_isNumerical(string)) {
    return string;
  } // eslint-disable-next-line no-useless-escape


  string = string.replace(/[\-_\s]+(.)?/g, function (match, chr) {
    return chr ? chr.toUpperCase() : '';
  }); // Ensure 1st char is always lowercase

  return string.substr(0, 1).toLowerCase() + string.substr(1);
}

var _excluded = ["style"];

function capitalize(val) {
  return val.charAt(0).toUpperCase() + val.slice(1);
}

function styleToObject(style) {
  return style.split(';').map(function (s) {
    return s.trim();
  }).filter(function (s) {
    return s;
  }).reduce(function (acc, pair) {
    var i = pair.indexOf(':');
    var prop = camelize(pair.slice(0, i));
    var value = pair.slice(i + 1).trim();
    prop.startsWith('webkit') ? acc[capitalize(prop)] = value : acc[prop] = value;
    return acc;
  }, {});
}

function convert(createElement, element) {
  var extraProps = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

  if (typeof element === 'string') {
    return element;
  }

  var children = (element.children || []).map(function (child) {
    return convert(createElement, child);
  });
  /* eslint-disable dot-notation */

  var mixins = Object.keys(element.attributes || {}).reduce(function (acc, key) {
    var val = element.attributes[key];

    switch (key) {
      case 'class':
        acc.attrs['className'] = val;
        delete element.attributes['class'];
        break;

      case 'style':
        acc.attrs['style'] = styleToObject(val);
        break;

      default:
        if (key.indexOf('aria-') === 0 || key.indexOf('data-') === 0) {
          acc.attrs[key.toLowerCase()] = val;
        } else {
          acc.attrs[camelize(key)] = val;
        }

    }

    return acc;
  }, {
    attrs: {}
  });

  var _extraProps$style = extraProps.style,
      existingStyle = _extraProps$style === void 0 ? {} : _extraProps$style,
      remaining = _objectWithoutProperties(extraProps, _excluded);

  mixins.attrs['style'] = _objectSpread2(_objectSpread2({}, mixins.attrs['style']), existingStyle);
  /* eslint-enable */

  return createElement.apply(void 0, [element.tag, _objectSpread2(_objectSpread2({}, mixins.attrs), remaining)].concat(_toConsumableArray(children)));
}

var PRODUCTION = false;

try {
  PRODUCTION = process.env.NODE_ENV === 'production';
} catch (e) {}

function log () {
  if (!PRODUCTION && console && typeof console.error === 'function') {
    var _console;

    (_console = console).error.apply(_console, arguments);
  }
}

function normalizeIconArgs(icon) {
  // this has everything that it needs to be rendered which means it was probably imported
  // directly from an icon svg package
  if (icon && _typeof(icon) === 'object' && icon.prefix && icon.iconName && icon.icon) {
    return icon;
  }

  if (parse.icon) {
    return parse.icon(icon);
  } // if the icon is null, there's nothing to do


  if (icon === null) {
    return null;
  } // if the icon is an object and has a prefix and an icon name, return it


  if (icon && _typeof(icon) === 'object' && icon.prefix && icon.iconName) {
    return icon;
  } // if it's an array with length of two


  if (Array.isArray(icon) && icon.length === 2) {
    // use the first item as prefix, second as icon name
    return {
      prefix: icon[0],
      iconName: icon[1]
    };
  } // if it's a string, use it as the icon name


  if (typeof icon === 'string') {
    return {
      prefix: 'fas',
      iconName: icon
    };
  }
}

// creates an object with a key of key
// and a value of value
// if certain conditions are met
function objectWithKey(key, value) {
  // if the value is a non-empty array
  // or it's not an array but it is truthy
  // then create the object with the key and the value
  // if not, return an empty array
  return Array.isArray(value) && value.length > 0 || !Array.isArray(value) && value ? _defineProperty({}, key, value) : {};
}

var FontAwesomeIcon = /*#__PURE__*/React.forwardRef(function (props, ref) {
  var iconArgs = props.icon,
      maskArgs = props.mask,
      symbol = props.symbol,
      className = props.className,
      title = props.title,
      titleId = props.titleId,
      maskId = props.maskId;
  var iconLookup = normalizeIconArgs(iconArgs);
  var classes = objectWithKey('classes', [].concat(_toConsumableArray(classList(props)), _toConsumableArray(className.split(' '))));
  var transform = objectWithKey('transform', typeof props.transform === 'string' ? parse.transform(props.transform) : props.transform);
  var mask = objectWithKey('mask', normalizeIconArgs(maskArgs));
  var renderedIcon = icon(iconLookup, _objectSpread2(_objectSpread2(_objectSpread2(_objectSpread2({}, classes), transform), mask), {}, {
    symbol: symbol,
    title: title,
    titleId: titleId,
    maskId: maskId
  }));

  if (!renderedIcon) {
    log('Could not find icon', iconLookup);
    return null;
  }

  var abstract = renderedIcon.abstract;
  var extraProps = {
    ref: ref
  };
  Object.keys(props).forEach(function (key) {
    // eslint-disable-next-line no-prototype-builtins
    if (!FontAwesomeIcon.defaultProps.hasOwnProperty(key)) {
      extraProps[key] = props[key];
    }
  });
  return convertCurry(abstract[0], extraProps);
});
FontAwesomeIcon.displayName = 'FontAwesomeIcon';
FontAwesomeIcon.propTypes = {
  beat: PropTypes.bool,
  border: PropTypes.bool,
  beatFade: PropTypes.bool,
  bounce: PropTypes.bool,
  className: PropTypes.string,
  fade: PropTypes.bool,
  flash: PropTypes.bool,
  mask: PropTypes.oneOfType([PropTypes.object, PropTypes.array, PropTypes.string]),
  maskId: PropTypes.string,
  fixedWidth: PropTypes.bool,
  inverse: PropTypes.bool,
  flip: PropTypes.oneOf([true, false, 'horizontal', 'vertical', 'both']),
  icon: PropTypes.oneOfType([PropTypes.object, PropTypes.array, PropTypes.string]),
  listItem: PropTypes.bool,
  pull: PropTypes.oneOf(['right', 'left']),
  pulse: PropTypes.bool,
  rotation: PropTypes.oneOf([0, 90, 180, 270]),
  shake: PropTypes.bool,
  size: PropTypes.oneOf(['2xs', 'xs', 'sm', 'lg', 'xl', '2xl', '1x', '2x', '3x', '4x', '5x', '6x', '7x', '8x', '9x', '10x']),
  spin: PropTypes.bool,
  spinPulse: PropTypes.bool,
  spinReverse: PropTypes.bool,
  symbol: PropTypes.oneOfType([PropTypes.bool, PropTypes.string]),
  title: PropTypes.string,
  titleId: PropTypes.string,
  transform: PropTypes.oneOfType([PropTypes.string, PropTypes.object]),
  swapOpacity: PropTypes.bool
};
FontAwesomeIcon.defaultProps = {
  border: false,
  className: '',
  mask: null,
  maskId: null,
  fixedWidth: false,
  inverse: false,
  flip: false,
  icon: null,
  listItem: false,
  pull: null,
  pulse: false,
  rotation: null,
  size: null,
  spin: false,
  spinPulse: false,
  spinReverse: false,
  beat: false,
  fade: false,
  beatFade: false,
  bounce: false,
  shake: false,
  symbol: false,
  title: '',
  titleId: null,
  transform: null,
  swapOpacity: false
};
var convertCurry = convert.bind(null, React.createElement);

export { FontAwesomeIcon };