import { createContext, useContext, forwardRef, createElement, Fragment } from 'react';
import createCache from '@emotion/cache';
import _extends from '@babel/runtime/helpers/esm/extends';
import weakMemoize from '@emotion/weak-memoize';
import hoistNonReactStatics from '../isolated-hoist-non-react-statics-do-not-use-this-in-your-code/dist/emotion-react-isolated-hoist-non-react-statics-do-not-use-this-in-your-code.esm.js';
import { getRegisteredStyles, insertStyles } from '@emotion/utils';
import { serializeStyles } from '@emotion/serialize';

var isBrowser = typeof document !== 'undefined';
var hasOwnProperty = Object.prototype.hasOwnProperty;

var EmotionCacheContext = /* #__PURE__ */createContext( // we're doing this to avoid preconstruct's dead code elimination in this one case
// because this module is primarily intended for the browser and node
// but it's also required in react native and similar environments sometimes
// and we could have a special build just for that
// but this is much easier and the native packages
// might use a different theme context in the future anyway
typeof HTMLElement !== 'undefined' ? /* #__PURE__ */createCache({
  key: 'css'
}) : null);

if (process.env.NODE_ENV !== 'production') {
  EmotionCacheContext.displayName = 'EmotionCacheContext';
}

var CacheProvider = EmotionCacheContext.Provider;
var __unsafe_useEmotionCache = function useEmotionCache() {
  return useContext(EmotionCacheContext);
};

var withEmotionCache = function withEmotionCache(func) {
  // $FlowFixMe
  return /*#__PURE__*/forwardRef(function (props, ref) {
    // the cache will never be null in the browser
    var cache = useContext(EmotionCacheContext);
    return func(props, cache, ref);
  });
};

if (!isBrowser) {
  withEmotionCache = function withEmotionCache(func) {
    return function (props) {
      var cache = useContext(EmotionCacheContext);

      if (cache === null) {
        // yes, we're potentially creating this on every render
        // it doesn't actually matter though since it's only on the server
        // so there will only every be a single render
        // that could change in the future because of suspense and etc. but for now,
        // this works and i don't want to optimise for a future thing that we aren't sure about
        cache = createCache({
          key: 'css'
        });
        return /*#__PURE__*/createElement(EmotionCacheContext.Provider, {
          value: cache
        }, func(props, cache));
      } else {
        return func(props, cache);
      }
    };
  };
}

var ThemeContext = /* #__PURE__ */createContext({});

if (process.env.NODE_ENV !== 'production') {
  ThemeContext.displayName = 'EmotionThemeContext';
}

var useTheme = function useTheme() {
  return useContext(ThemeContext);
};

var getTheme = function getTheme(outerTheme, theme) {
  if (typeof theme === 'function') {
    var mergedTheme = theme(outerTheme);

    if (process.env.NODE_ENV !== 'production' && (mergedTheme == null || typeof mergedTheme !== 'object' || Array.isArray(mergedTheme))) {
      throw new Error('[ThemeProvider] Please return an object from your theme function, i.e. theme={() => ({})}!');
    }

    return mergedTheme;
  }

  if (process.env.NODE_ENV !== 'production' && (theme == null || typeof theme !== 'object' || Array.isArray(theme))) {
    throw new Error('[ThemeProvider] Please make your theme prop a plain object');
  }

  return _extends({}, outerTheme, theme);
};

var createCacheWithTheme = /* #__PURE__ */weakMemoize(function (outerTheme) {
  return weakMemoize(function (theme) {
    return getTheme(outerTheme, theme);
  });
});
var ThemeProvider = function ThemeProvider(props) {
  var theme = useContext(ThemeContext);

  if (props.theme !== theme) {
    theme = createCacheWithTheme(theme)(props.theme);
  }

  return /*#__PURE__*/createElement(ThemeContext.Provider, {
    value: theme
  }, props.children);
};
function withTheme(Component) {
  var componentName = Component.displayName || Component.name || 'Component';

  var render = function render(props, ref) {
    var theme = useContext(ThemeContext);
    return /*#__PURE__*/createElement(Component, _extends({
      theme: theme,
      ref: ref
    }, props));
  }; // $FlowFixMe


  var WithTheme = /*#__PURE__*/forwardRef(render);
  WithTheme.displayName = "WithTheme(" + componentName + ")";
  return hoistNonReactStatics(WithTheme, Component);
}

// thus we only need to replace what is a valid character for JS, but not for CSS

var sanitizeIdentifier = function sanitizeIdentifier(identifier) {
  return identifier.replace(/\$/g, '-');
};

var typePropName = '__EMOTION_TYPE_PLEASE_DO_NOT_USE__';
var labelPropName = '__EMOTION_LABEL_PLEASE_DO_NOT_USE__';
var createEmotionProps = function createEmotionProps(type, props) {
  if (process.env.NODE_ENV !== 'production' && typeof props.css === 'string' && // check if there is a css declaration
  props.css.indexOf(':') !== -1) {
    throw new Error("Strings are not allowed as css prop values, please wrap it in a css template literal from '@emotion/react' like this: css`" + props.css + "`");
  }

  var newProps = {};

  for (var key in props) {
    if (hasOwnProperty.call(props, key)) {
      newProps[key] = props[key];
    }
  }

  newProps[typePropName] = type;

  if (process.env.NODE_ENV !== 'production') {
    var error = new Error();

    if (error.stack) {
      // chrome
      var match = error.stack.match(/at (?:Object\.|Module\.|)(?:jsx|createEmotionProps).*\n\s+at (?:Object\.|)([A-Z][A-Za-z0-9$]+) /);

      if (!match) {
        // safari and firefox
        match = error.stack.match(/.*\n([A-Z][A-Za-z0-9$]+)@/);
      }

      if (match) {
        newProps[labelPropName] = sanitizeIdentifier(match[1]);
      }
    }
  }

  return newProps;
};
var Emotion = /* #__PURE__ */withEmotionCache(function (props, cache, ref) {
  var cssProp = props.css; // so that using `css` from `emotion` and passing the result to the css prop works
  // not passing the registered cache to serializeStyles because it would
  // make certain babel optimisations not possible

  if (typeof cssProp === 'string' && cache.registered[cssProp] !== undefined) {
    cssProp = cache.registered[cssProp];
  }

  var type = props[typePropName];
  var registeredStyles = [cssProp];
  var className = '';

  if (typeof props.className === 'string') {
    className = getRegisteredStyles(cache.registered, registeredStyles, props.className);
  } else if (props.className != null) {
    className = props.className + " ";
  }

  var serialized = serializeStyles(registeredStyles, undefined, useContext(ThemeContext));

  if (process.env.NODE_ENV !== 'production' && serialized.name.indexOf('-') === -1) {
    var labelFromStack = props[labelPropName];

    if (labelFromStack) {
      serialized = serializeStyles([serialized, 'label:' + labelFromStack + ';']);
    }
  }

  var rules = insertStyles(cache, serialized, typeof type === 'string');
  className += cache.key + "-" + serialized.name;
  var newProps = {};

  for (var key in props) {
    if (hasOwnProperty.call(props, key) && key !== 'css' && key !== typePropName && (process.env.NODE_ENV === 'production' || key !== labelPropName)) {
      newProps[key] = props[key];
    }
  }

  newProps.ref = ref;
  newProps.className = className;
  var ele = /*#__PURE__*/createElement(type, newProps);

  if (!isBrowser && rules !== undefined) {
    var _ref;

    var serializedNames = serialized.name;
    var next = serialized.next;

    while (next !== undefined) {
      serializedNames += ' ' + next.name;
      next = next.next;
    }

    return /*#__PURE__*/createElement(Fragment, null, /*#__PURE__*/createElement("style", (_ref = {}, _ref["data-emotion"] = cache.key + " " + serializedNames, _ref.dangerouslySetInnerHTML = {
      __html: rules
    }, _ref.nonce = cache.sheet.nonce, _ref)), ele);
  }

  return ele;
});

if (process.env.NODE_ENV !== 'production') {
  Emotion.displayName = 'EmotionCssPropInternal';
}

export { CacheProvider as C, Emotion as E, ThemeContext as T, __unsafe_useEmotionCache as _, ThemeProvider as a, withTheme as b, createEmotionProps as c, hasOwnProperty as h, isBrowser as i, useTheme as u, withEmotionCache as w };