/**
 * Copyright 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMUnknownPropertyHook
 */

'use strict';

var DOMProperty = require('./DOMProperty');
var EventPluginRegistry = require('./EventPluginRegistry');
var ReactComponentTreeHook = require('./ReactComponentTreeHook');

var warning = require('fbjs/lib/warning');

if (process.env.NODE_ENV !== 'production') {
  var reactProps = {
    children: true,
    dangerouslySetInnerHTML: true,
    key: true,
    ref: true,

    autoFocus: true,
    defaultValue: true,
    valueLink: true,
    defaultChecked: true,
    checkedLink: true,
    innerHTML: true,
    suppressContentEditableWarning: true,
    onFocusIn: true,
    onFocusOut: true
  };
  var warnedProperties = {};

  var validateProperty = function (tagName, name, debugID) {
    if (DOMProperty.properties.hasOwnProperty(name) || DOMProperty.isCustomAttribute(name)) {
      return true;
    }
    if (reactProps.hasOwnProperty(name) && reactProps[name] || warnedProperties.hasOwnProperty(name) && warnedProperties[name]) {
      return true;
    }
    if (EventPluginRegistry.registrationNameModules.hasOwnProperty(name)) {
      return true;
    }
    warnedProperties[name] = true;
    var lowerCasedName = name.toLowerCase();

    // data-* attributes should be lowercase; suggest the lowercase version
    var standardName = DOMProperty.isCustomAttribute(lowerCasedName) ? lowerCasedName : DOMProperty.getPossibleStandardName.hasOwnProperty(lowerCasedName) ? DOMProperty.getPossibleStandardName[lowerCasedName] : null;

    var registrationName = EventPluginRegistry.possibleRegistrationNames.hasOwnProperty(lowerCasedName) ? EventPluginRegistry.possibleRegistrationNames[lowerCasedName] : null;

    if (standardName != null) {
      process.env.NODE_ENV !== 'production' ? warning(false, 'Unknown DOM property %s. Did you mean %s?%s', name, standardName, ReactComponentTreeHook.getStackAddendumByID(debugID)) : void 0;
      return true;
    } else if (registrationName != null) {
      process.env.NODE_ENV !== 'production' ? warning(false, 'Unknown event handler property %s. Did you mean `%s`?%s', name, registrationName, ReactComponentTreeHook.getStackAddendumByID(debugID)) : void 0;
      return true;
    } else {
      // We were unable to guess which prop the user intended.
      // It is likely that the user was just blindly spreading/forwarding props
      // Components should be careful to only render valid props/attributes.
      // Warning will be invoked in warnUnknownProperties to allow grouping.
      return false;
    }
  };
}

var warnUnknownProperties = function (debugID, element) {
  var unknownProps = [];
  for (var key in element.props) {
    var isValid = validateProperty(element.type, key, debugID);
    if (!isValid) {
      unknownProps.push(key);
    }
  }

  var unknownPropString = unknownProps.map(function (prop) {
    return '`' + prop + '`';
  }).join(', ');

  if (unknownProps.length === 1) {
    process.env.NODE_ENV !== 'production' ? warning(false, 'Unknown prop %s on <%s> tag. Remove this prop from the element. ' + 'For details, see https://fb.me/react-unknown-prop%s', unknownPropString, element.type, ReactComponentTreeHook.getStackAddendumByID(debugID)) : void 0;
  } else if (unknownProps.length > 1) {
    process.env.NODE_ENV !== 'production' ? warning(false, 'Unknown props %s on <%s> tag. Remove these props from the element. ' + 'For details, see https://fb.me/react-unknown-prop%s', unknownPropString, element.type, ReactComponentTreeHook.getStackAddendumByID(debugID)) : void 0;
  }
};

function handleElement(debugID, element) {
  if (element == null || typeof element.type !== 'string') {
    return;
  }
  if (element.type.indexOf('-') >= 0 || element.props.is) {
    return;
  }
  warnUnknownProperties(debugID, element);
}

var ReactDOMUnknownPropertyHook = {
  onBeforeMountComponent: function (debugID, element) {
    handleElement(debugID, element);
  },
  onBeforeUpdateComponent: function (debugID, element) {
    handleElement(debugID, element);
  }
};

module.exports = ReactDOMUnknownPropertyHook;