// Fix things that JSDOM doesn't do quite right.

'use strict';

var _Object$assign = require('babel-runtime/core-js/object/assign')['default'];

var _Number$isFinite = require('babel-runtime/core-js/number/is-finite')['default'];

var DOM = require('./index');
var Fetch = require('../fetch');
var resourceLoader = require('jsdom/lib/jsdom/browser/resource-loader');
var Utils = require('jsdom/lib/jsdom/utils');
var URL = require('url');
var createHTMLCollection = require('jsdom/lib/jsdom/living/html-collection').create;

DOM.HTMLDocument.prototype.__defineGetter__('scripts', function () {
  var _this = this;

  return createHTMLCollection(this, function () {
    return _this.querySelectorAll('script');
  });
});

// Default behavior for clicking on links: navigate to new URL if specified.
DOM.HTMLAnchorElement.prototype._eventDefaults = _Object$assign({}, DOM.HTMLElement.prototype._eventDefaults);
DOM.HTMLAnchorElement.prototype._eventDefaults.click = function (event) {
  var anchor = event.target;
  if (!anchor.href) return;

  var window = anchor.ownerDocument.defaultView;
  var browser = window.browser;

  // Decide which window to open this link in
  switch (anchor.target || '_self') {
    case '_self':
      {
        // navigate same window
        window.location = anchor.href;
        break;
      }
    case '_parent':
      {
        // navigate parent window
        window.parent.location = anchor.href;
        break;
      }
    case '_top':
      {
        // navigate top window
        window.top.location = anchor.href;
        break;
      }
    default:
      {
        // open named window
        browser.tabs.open({ name: anchor.target, url: anchor.href });
        break;
      }
  }
  browser.emit('link', anchor.href, anchor.target || '_self');
};

// Attempt to load the image, this will trigger a 'load' event when succesful
// jsdom seemed to only queue the 'load' event
DOM.HTMLImageElement.prototype._attrModified = function (name, value, oldVal) {
  if (name === 'src' && value && value !== oldVal) resourceLoader.load(this, value);
  DOM.HTMLElement.prototype._attrModified.call(this, name, value, oldVal);
};

// Implement getClientRects
DOM.HTMLElement.prototype.getClientRects = function () {
  var style = this.style;

  if (style && style.display === 'none') {
    return [];
  }

  return [{
    bottom: 0,
    height: 0,
    left: 0,
    right: 0,
    top: 0,
    width: 0
  }];
};

Object.defineProperty(DOM.HTMLElement.prototype, 'offsetHeight', {
  get: function get() {
    return 0;
  }
});

Object.defineProperty(DOM.HTMLElement.prototype, 'offsetWidth', {
  get: function get() {
    return 0;
  }
});

// Implement insertAdjacentHTML
DOM.HTMLElement.prototype.insertAdjacentHTML = function (position, html) {
  var parentNode = this.parentNode;

  var container = this.ownerDocument.createElementNS('http://www.w3.org/1999/xhtml', '_');
  container.innerHTML = html;

  switch (position.toLowerCase()) {
    case 'beforebegin':
      {
        while (container.firstChild) parentNode.insertBefore(container.firstChild, this);
        break;
      }
    case 'afterbegin':
      {
        var firstChild = this.firstChild;
        while (container.lastChild) firstChild = this.insertBefore(container.lastChild, firstChild);
        break;
      }
    case 'beforeend':
      {
        while (container.firstChild) this.appendChild(container.firstChild);
        break;
      }
    case 'afterend':
      {
        var nextSibling = this.nextSibling;
        while (container.lastChild) nextSibling = parentNode.insertBefore(container.lastChild, nextSibling);
        break;
      }
  }
};

// Implement documentElement.contains
// e.g., if(document.body.contains(el)) { ... }
// See https://developer.mozilla.org/en-US/docs/DOM/Node.contains
DOM.Node.prototype.contains = function (otherNode) {
  // DDOPSON-2012-08-16 -- This implementation is stolen from Sizzle's
  // implementation of 'contains' (around line 1402).
  // We actually can't call Sizzle.contains directly:
  // * Because we define Node.contains, Sizzle will configure it's own
  //   "contains" method to call us. (it thinks we are a native browser
  //   implementation of "contains")
  // * Thus, if we called Sizzle.contains, it would form an infinite loop.
  //   Instead we use Sizzle's fallback implementation of "contains" based on
  //   "compareDocumentPosition".
  return !!(this.compareDocumentPosition(otherNode) & 16);
};

// Support for opacity style property.
Object.defineProperty(DOM.CSSStyleDeclaration.prototype, 'opacity', {
  get: function get() {
    var opacity = this.getPropertyValue('opacity');
    return _Number$isFinite(opacity) ? opacity.toString() : '';
  },

  set: function set(opacity) {
    if (opacity === null || opacity === undefined || opacity === '') this.removeProperty('opacity');else {
      var value = parseFloat(opacity);
      if (isFinite(value)) this._setProperty('opacity', value);
    }
  }
});

// Wrap dispatchEvent to support _windowInScope and error handling.
var jsdomDispatchEvent = DOM.EventTarget.prototype.dispatchEvent;
DOM.EventTarget.prototype.dispatchEvent = function (event) {
  // Could be node, window or document
  var document = this._ownerDocument || this.document || this;
  var window = document.defaultView;
  // Fail miserably on objects that don't have ownerDocument: nodes and XHR
  // request have those
  var browser = window.browser;

  browser.emit('event', event, this);

  var originalInScope = browser._windowInScope;
  try {
    // The current window, postMessage and window.close need this
    browser._windowInScope = window;
    // Inline event handlers rely on window.event
    window.event = event;
    return jsdomDispatchEvent.call(this, event);
  } finally {
    delete window.event;
    browser._windowInScope = originalInScope;
  }
};

// Fix resource loading to keep track of in-progress requests. Need this to wait
// for all resources (mainly JavaScript) to complete loading before terminating
// browser.wait.
resourceLoader.load = function (element, href, callback) {
  var _this2 = this;

  var document = element.ownerDocument;
  var window = document.defaultView;
  var tagName = element.tagName.toLowerCase();
  var loadResource = document.implementation._hasFeature('FetchExternalResources', tagName);
  var url = resourceLoader.resolveResourceUrl(document, href);

  if (loadResource) {
    (function () {
      // This guarantees that all scripts are executed in order, must add to the
      // JSDOM queue before we add to the Zombie event queue.
      var enqueued = _this2.enqueue(element, url, callback && callback.bind(element));
      var request = new Fetch.Request(url);
      window._eventQueue.http(request, function (error, response) {
        // Since this is used by resourceLoader that doesn't check the response,
        // we're responsible to turn anything other than 2xx/3xx into an error
        if (error) enqueued(new Error('Network error'));else if (response.status >= 400) enqueued(new Error('Server returned status code ' + response.status + ' from ' + url));else response._consume().then(function (buffer) {
          response.body = buffer;
          enqueued(null, buffer);
        });
      });
    })();
  }
};

// Fix residual Node bug. See https://github.com/joyent/node/pull/14146
var jsdomResolveHref = Utils.resolveHref;
Utils.resolveHref = function (baseUrl, href) {
  var pattern = /file:?/;
  var protocol = URL.parse(baseUrl).protocol;
  var original = URL.parse(href);
  var resolved = URL.parse(jsdomResolveHref(baseUrl, href));

  if (!pattern.test(protocol) && pattern.test(original.protocol) && !original.host && resolved.host) return URL.format(original);else return URL.format(resolved);
};
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