var parse5 = require('parse5');
var parser = new parse5.Parser(parse5.TreeAdapters.htmlparser2);
var serializer = new parse5.Serializer(parse5.TreeAdapters.htmlparser2);
var treeAdapter = parser.treeAdapter;

var cssParse = require('css').parse;

var url = require('url');

import {List, MapWrapper, ListWrapper, StringMapWrapper} from 'angular2/src/facade/collection';
import {DomAdapter, setRootDomAdapter} from './dom_adapter';
import {BaseException, isPresent, isBlank} from 'angular2/src/facade/lang';
import {SelectorMatcher, CssSelector} from 'angular2/src/render/dom/compiler/selector';

var _attrToPropMap = {
  'innerHtml': 'innerHTML',
  'readonly': 'readOnly',
  'tabindex': 'tabIndex',
};
var defDoc = null;

function _notImplemented(methodName) {
  return new BaseException('This method is not implemented in Parse5DomAdapter: ' + methodName);
}

export class Parse5DomAdapter extends DomAdapter {
  static makeCurrent() {
    setRootDomAdapter(new Parse5DomAdapter());
  }

  logError(error) {
    console.error(error);
  }

  get attrToPropMap() {
    return _attrToPropMap;
  }

  query(selector) {
    throw _notImplemented('query');
  }
  querySelector(el, selector:string) {
    return this.querySelectorAll(el, selector)[0];
  }
  querySelectorAll(el, selector:string) {
    var res = ListWrapper.create();
    var _recursive = (result, node, selector, matcher) => {
      if (this.elementMatches(node, selector, matcher)) {
        ListWrapper.push(result, node);
      }
      var cNodes = node.childNodes;
      if (cNodes && cNodes.length > 0) {
        for (var i = 0; i < cNodes.length; i++) {
          _recursive(result, cNodes[i], selector, matcher);
        }
      }
    };
    var matcher = new SelectorMatcher();
    matcher.addSelectables(CssSelector.parse(selector));
    _recursive(res, el, selector, matcher);
    return res;
  }
  elementMatches(node, selector:string, matcher = null):boolean {
    var result = false;
    if (selector && selector.charAt(0) == "#") {
      result = this.getAttribute(node, 'id') == selector.substring(1);
    } else if (selector) {
      var result = false;
      if (matcher == null) {
        matcher = new SelectorMatcher();
        matcher.addSelectables(CssSelector.parse(selector));
      }

      var cssSelector = new CssSelector();
      cssSelector.setElement(this.tagName(node));
      if (node.attribs) {
        for (var attrName in node.attribs) {
          cssSelector.addAttribute(attrName, node.attribs[attrName]);
        }
      }
      var classList = this.classList(node);
      for (var i = 0; i < classList.length; i++) {
        cssSelector.addClassName(classList[i]);
      }

      matcher.match(cssSelector, function(selector, cb) {result = true;});
    }
    return result;
  }
  on(el, evt, listener) {
    var listenersMap = el._eventListenersMap;
    if (isBlank(listenersMap)) {
      var listenersMap = StringMapWrapper.create();
      el._eventListenersMap = listenersMap;
    }
    var listeners = StringMapWrapper.get(listenersMap, evt);
    if (isBlank(listeners)) {
      listeners = ListWrapper.create();
    }
    ListWrapper.push(listeners, listener);
    StringMapWrapper.set(listenersMap, evt, listeners);
  }
  onAndCancel(el, evt, listener): Function {
    this.on(el, evt, listener);
    return () => {ListWrapper.remove(StringMapWrapper.get(el._eventListenersMap, evt), listener);};
  }
  dispatchEvent(el, evt) {
    if (isBlank(evt.target)) {
      evt.target = el;
    }
    if (isPresent(el._eventListenersMap)) {
      var listeners = StringMapWrapper.get(el._eventListenersMap, evt.type);
      if (isPresent(listeners)) {
        for (var i = 0; i < listeners.length; i++) {
          listeners[i](evt);
        }
      }
    }
    if (isPresent(el.parent)) {
      this.dispatchEvent(el.parent, evt);
    }
    if (isPresent(el._window)) {
      this.dispatchEvent(el._window, evt);
    }
  }
  createMouseEvent(eventType) {
    return this.createEvent(eventType);
  }
  createEvent(eventType) {
    return {type: eventType};
  }
  getInnerHTML(el) {
    return serializer.serialize(this.templateAwareRoot(el));
  }
  getOuterHTML(el) {
    serializer.html = '';
    serializer._serializeElement(el);
    return serializer.html;
  }
  nodeName(node):string {
    return node.tagName;
  }
  nodeValue(node):string {
    return node.nodeValue;
  }
  type(node:string) {
    throw _notImplemented('type');
  }
  content(node) {
    return node.childNodes[0];
  }
  firstChild(el) {
    return el.firstChild;
  }
  nextSibling(el) {
    return el.nextSibling;
  }
  parentElement(el) {
    return el.parent;
  }
  childNodes(el) {
    return el.childNodes;
  }
  childNodesAsList(el):List {
    var childNodes = el.childNodes;
    var res = ListWrapper.createFixedSize(childNodes.length);
    for (var i = 0; i < childNodes.length; i++) {
      res[i] = childNodes[i];
    }
    return res;
  }
  clearNodes(el) {
    while (el.childNodes.length > 0) {
      this.remove(el.childNodes[0]);
    }
  }
  appendChild(el, node) {
    this.remove(node);
    treeAdapter.appendChild(this.templateAwareRoot(el), node);
  }
  removeChild(el, node) {
    if (ListWrapper.contains(el.childNodes, node)) {
      this.remove(node);
    }
  }
  remove(el) {
    var parent = el.parent;
    if (parent) {
      var index = parent.childNodes.indexOf(el);
      parent.childNodes.splice(index, 1);
    }
    var prev = el.previousSibling;
    var next = el.nextSibling;
    if (prev) {
      prev.next = next;
    }
    if (next) {
      next.prev = prev;
    }
    el.prev = null;
    el.next = null;
    el.parent = null;
    return el;
  }
  insertBefore(el, node) {
    this.remove(node);
    treeAdapter.insertBefore(el.parent, node, el);
  }
  insertAllBefore(el, nodes) {
    ListWrapper.forEach(nodes, (n) => {
      this.insertBefore(el, n);
    });
  }
  insertAfter(el, node) {
    if (el.nextSibling) {
      this.insertBefore(el.nextSibling, node);
    } else {
      this.appendChild(el.parent, node);
    }
  }
  setInnerHTML(el, value) {
    this.clearNodes(el);
    var content = parser.parseFragment(value);
    for (var i = 0; i < content.childNodes.length; i++) {
      treeAdapter.appendChild(el, content.childNodes[i]);
    }
  }
  getText(el) {
    if (this.isTextNode(el)) {
      return el.data;
    } else if (el.childNodes.length == 0) {
      return "";
    } else {
      var textContent = "";
      for (var i = 0; i < el.childNodes.length; i++) {
        textContent += this.getText(el.childNodes[i]);
      }
      return textContent;
    }
  }
  setText(el, value:string) {
    if (this.isTextNode(el)) {
      el.data = value;
    } else {
      this.clearNodes(el);
      treeAdapter.insertText(el, value);
    }
  }
  getValue(el) {
    return el.value;
  }
  setValue(el, value:string) {
    el.value = value;
  }
  getChecked(el) {
    return el.checked;
  }
  setChecked(el, value:boolean) {
    el.checked = value;
  }
  createTemplate(html) {
    var template = treeAdapter.createElement("template", 'http://www.w3.org/1999/xhtml', []);
    var content = parser.parseFragment(html);
    treeAdapter.appendChild(template, content);
    return template;
  }
  createElement(tagName) {
    return treeAdapter.createElement(tagName, 'http://www.w3.org/1999/xhtml', []);
  }
  createTextNode(text: string) {
    throw _notImplemented('createTextNode');
  }
  createScriptTag(attrName:string, attrValue:string) {
    return treeAdapter.createElement("script", 'http://www.w3.org/1999/xhtml', [{name: attrName, value: attrValue}]);
  }
  createStyleElement(css:string) {
    var style = this.createElement('style');
    this.setText(style, css);
    return style;
  }
  createShadowRoot(el) {
    el.shadowRoot = treeAdapter.createDocumentFragment();
    el.shadowRoot.parent = el;
    return el.shadowRoot;
  }
  getShadowRoot(el) {
    return el.shadowRoot;
  }
  getHost(el) {
    return el.host;
  }
  getDistributedNodes(el) {
    throw _notImplemented('getDistributedNodes');
  }
  clone(node) {
    var temp = treeAdapter.createElement("template", null, []);
    treeAdapter.appendChild(temp, node);
    var serialized = serializer.serialize(temp);
    var newParser = new parse5.Parser(parse5.TreeAdapters.htmlparser2);
    return newParser.parseFragment(serialized).childNodes[0];
  }
  hasProperty(element, name:string) {
    return _HTMLElementPropertyList.indexOf(name) > -1;
  }
  getElementsByClassName(element, name:string) {
    return this.querySelectorAll(element, "." + name);
  }
  getElementsByTagName(element, name:string) {
    throw _notImplemented('getElementsByTagName');
  }
  classList(element):List {
    var classAttrValue = null;
    var attributes = element.attribs;
    if (attributes && attributes.hasOwnProperty("class")) {
      classAttrValue = attributes["class"];
    }
    return classAttrValue ? classAttrValue.trim().split(/\s+/g) : [];
  }
  addClass(element, classname:string) {
    var classList = this.classList(element);
    var index = classList.indexOf(classname);
    if (index == -1) {
      ListWrapper.push(classList, classname);
      element.attribs["class"] = element.className = ListWrapper.join(classList, " ");
    }
  }
  removeClass(element, classname:string) {
    var classList = this.classList(element);
    var index = classList.indexOf(classname);
    if (index > -1) {
      classList.splice(index, 1);
      element.attribs["class"] = element.className = ListWrapper.join(classList, " ");
    }
  }
  hasClass(element, classname:string) {
    return ListWrapper.contains(this.classList(element), classname);
  }
  _readStyleAttribute(element) {
    var styleMap = {};
    var attributes = element.attribs;
    if (attributes && attributes.hasOwnProperty("style")) {
      var styleAttrValue = attributes["style"];
      var styleList = styleAttrValue.split(/;+/g);
      for (var i = 0; i < styleList.length; i++) {
        if (styleList[i].length > 0) {
          var elems = styleList[i].split(/:+/g);
          styleMap[elems[0].trim()] = elems[1].trim();
        }
      }
    }
    return styleMap;
  }
  _writeStyleAttribute(element, styleMap) {
    var styleAttrValue = "";
    for (var key in styleMap) {
      var newValue = styleMap[key];
      if (newValue && newValue.length > 0) {
        styleAttrValue += key + ":" + styleMap[key] + ";";
      }
    }
    element.attribs["style"] = styleAttrValue;
  }
  setStyle(element, stylename:string, stylevalue:string) {
    var styleMap = this._readStyleAttribute(element);
    styleMap[stylename] = stylevalue;
    this._writeStyleAttribute(element, styleMap);
  }
  removeStyle(element, stylename:string) {
    this.setStyle(element, stylename, null);
  }
  getStyle(element, stylename:string) {
    var styleMap = this._readStyleAttribute(element);
    return styleMap.hasOwnProperty(stylename) ? styleMap[stylename] : "";
  }
  tagName(element):string {
    return element.tagName == "style" ? "STYLE" : element.tagName;
  }
  attributeMap(element) {
    var res = MapWrapper.create();
    var elAttrs = treeAdapter.getAttrList(element);
    for (var i = 0; i < elAttrs.length; i++) {
      var attrib = elAttrs[i];
      MapWrapper.set(res, attrib.name, attrib.value);
    }
    return res;
  }
  getAttribute(element, attribute:string) {
    return element.attribs && element.attribs.hasOwnProperty(attribute)? element.attribs[attribute]: null;
  }
  setAttribute(element, attribute:string, value:string) {
    if (attribute) {
      element.attribs[attribute] = value;
    }
  }
  removeAttribute(element, attribute:string) {
    if (attribute) {
      delete element.attribs[attribute];
    }
  }
  templateAwareRoot(el) {
    return this.isTemplateElement(el) ? this.content(el) : el;
  }
  createHtmlDocument() {
    var newDoc = treeAdapter.createDocument();
    newDoc.title = "fake title";
    var head = treeAdapter.createElement("head", null, []);
    var body = treeAdapter.createElement("body", 'http://www.w3.org/1999/xhtml', []);
    this.appendChild(newDoc, head);
    this.appendChild(newDoc, body);
    StringMapWrapper.set(newDoc, "head", head);
    StringMapWrapper.set(newDoc, "body", body);
    StringMapWrapper.set(newDoc, "_window", StringMapWrapper.create());
    return newDoc;
  }
  defaultDoc() {
    if (defDoc === null) {
      defDoc = this.createHtmlDocument();
    }
    return defDoc;
  }
  getBoundingClientRect(el) {
    return {left: 0, top: 0, width: 0, height: 0};
  }
  getTitle() {
    return this.defaultDoc().title || "";
  }
  setTitle(newTitle:string) {
    this.defaultDoc().title = newTitle;
  }
  isTemplateElement(el:any):boolean {
    return this.isElementNode(el) && this.tagName(el) === "template";
  }
  isTextNode(node):boolean {
    return treeAdapter.isTextNode(node);
  }
  isCommentNode(node):boolean {
    return treeAdapter.isCommentNode(node);
  }
  isElementNode(node):boolean {
    return node ? treeAdapter.isElementNode(node) : false;
  }
  hasShadowRoot(node):boolean {
    return isPresent(node.shadowRoot);
  }
  isShadowRoot(node): boolean {
    return this.getShadowRoot(node) == node;
  }
  importIntoDoc(node) {
    return this.clone(node);
  }
  isPageRule(rule): boolean {
    return rule.type === 6; //CSSRule.PAGE_RULE
  }
  isStyleRule(rule): boolean {
    return rule.type === 1; //CSSRule.MEDIA_RULE
  }
  isMediaRule(rule): boolean {
    return rule.type === 4; //CSSRule.MEDIA_RULE
  }
  isKeyframesRule(rule): boolean {
    return rule.type === 7; //CSSRule.KEYFRAMES_RULE
  }
  getHref(el): string {
    return el.href;
  }
  resolveAndSetHref(el, baseUrl:string, href:string) {
    if (href == null) {
      el.href = baseUrl;
    } else {
      el.href = url.resolve(baseUrl, href);
    }
  }
  _buildRules(parsedRules, css) {
    var rules = ListWrapper.create();
    for (var i = 0; i < parsedRules.length; i++) {
      var parsedRule = parsedRules[i];
      var rule = {cssText: css};
      rule.style = {content: "", cssText: ""};
      if (parsedRule.type == "rule") {
        rule.type = 1;
        rule.selectorText = parsedRule.selectors.join(", ").replace(/\s{2,}/g, " ").replace(/\s*~\s*/g, " ~ ")
          .replace(/\s*\+\s*/g, " + ").replace(/\s*>\s*/g, " > ").replace(/\[(\w+)=(\w+)\]/g, '[$1="$2"]');
        if (isBlank(parsedRule.declarations)) {
          continue;
        }
        for (var j = 0; j < parsedRule.declarations.length; j++) {
          var declaration = parsedRule.declarations[j];
          rule.style[declaration.property] = declaration.value;
          rule.style.cssText += declaration.property + ": " + declaration.value + ";";
        }
      } else if (parsedRule.type == "media") {
        rule.type = 4;
        rule.media = {mediaText: parsedRule.media};
        if (parsedRule.rules) {
          rule.cssRules = this._buildRules(parsedRule.rules);
        }
      }
      ListWrapper.push(rules, rule);
    }
    return rules;
  }
  cssToRules(css:string): List {
    css = css.replace(/url\(\'(.+)\'\)/g, 'url($1)');
    var rules = ListWrapper.create();
    var parsedCSS = cssParse(css, {silent: true});
    if (parsedCSS.stylesheet && parsedCSS.stylesheet.rules) {
      rules = this._buildRules(parsedCSS.stylesheet.rules, css);
    }
    return rules;
  }
  supportsDOMEvents(): boolean {
    return false;
  }
  supportsNativeShadowDOM(): boolean {
    return false;
  }
  getGlobalEventTarget(target:string) {
    if (target == "window") {
      return this.defaultDoc()._window;
    } else if (target == "document") {
      return this.defaultDoc();
    } else if (target == "body") {
      return this.defaultDoc().body;
    }
  }
}

//TODO: build a proper list, this one is all the keys of a HTMLInputElement
var _HTMLElementPropertyList = ["webkitEntries","incremental","webkitdirectory","selectionDirection","selectionEnd",
"selectionStart","labels","validationMessage","validity","willValidate","width","valueAsNumber","valueAsDate",
"value","useMap","defaultValue","type","step","src","size","required","readOnly","placeholder","pattern","name",
"multiple","min","minLength","maxLength","max","list","indeterminate","height","formTarget","formNoValidate",
"formMethod","formEnctype","formAction","files","form","disabled","dirName","checked","defaultChecked","autofocus",
"autocomplete","alt","align","accept","onautocompleteerror","onautocomplete","onwaiting","onvolumechange",
"ontoggle","ontimeupdate","onsuspend","onsubmit","onstalled","onshow","onselect","onseeking","onseeked","onscroll",
"onresize","onreset","onratechange","onprogress","onplaying","onplay","onpause","onmousewheel","onmouseup",
"onmouseover","onmouseout","onmousemove","onmouseleave","onmouseenter","onmousedown","onloadstart",
"onloadedmetadata","onloadeddata","onload","onkeyup","onkeypress","onkeydown","oninvalid","oninput","onfocus",
"onerror","onended","onemptied","ondurationchange","ondrop","ondragstart","ondragover","ondragleave","ondragenter",
"ondragend","ondrag","ondblclick","oncuechange","oncontextmenu","onclose","onclick","onchange","oncanplaythrough",
"oncanplay","oncancel","onblur","onabort","spellcheck","isContentEditable","contentEditable","outerText",
"innerText","accessKey","hidden","webkitdropzone","draggable","tabIndex","dir","translate","lang","title",
"childElementCount","lastElementChild","firstElementChild","children","onwebkitfullscreenerror",
"onwebkitfullscreenchange","nextElementSibling","previousElementSibling","onwheel","onselectstart",
"onsearch","onpaste","oncut","oncopy","onbeforepaste","onbeforecut","onbeforecopy","shadowRoot","dataset",
"classList","className","outerHTML","innerHTML","scrollHeight","scrollWidth","scrollTop","scrollLeft",
"clientHeight","clientWidth","clientTop","clientLeft","offsetParent","offsetHeight","offsetWidth","offsetTop",
"offsetLeft","localName","prefix","namespaceURI","id","style","attributes","tagName","parentElement","textContent",
"baseURI","ownerDocument","nextSibling","previousSibling","lastChild","firstChild","childNodes","parentNode",
"nodeType","nodeValue","nodeName","closure_lm_714617","__jsaction"];