/*

  * Licensed under the MIT License

  * 

  * Copyright 2011 (c) Flávio Silva, flsilva.com

  *

  * Permission is hereby granted, free of charge, to any person

  * obtaining a copy of this software and associated documentation

  * files (the "Software"), to deal in the Software without

  * restriction, including without limitation the rights to use,

  * copy, modify, merge, publish, distribute, sublicense, and/or sell

  * copies of the Software, and to permit persons to whom the

  * Software is furnished to do so, subject to the following

  * conditions:

  *

  * The above copyright notice and this permission notice shall be

  * included in all copies or substantial portions of the Software.

  *

  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

  * OTHER DEALINGS IN THE SOFTWARE.

  * 

  * http://www.opensource.org/licenses/mit-license.php

  */

 package org.vostokframework.domain.assets

 {

         import org.as3collections.IIterator;

         import org.as3collections.IMap;

         import org.as3collections.maps.HashMap;

         import org.as3utils.StringUtil;

         /**

          * description

          * 

          * @author Flávio Silva

          */

         public class UrlAssetParser

         {

                 private var _typeRegexpMap:IMap;

                 public function UrlAssetParser()

                 {

                         _typeRegexpMap = new HashMap();

                         var aacExt:Array = getAACExtensions();

                         var cssExt:Array = getCSSExtensions();

                         var imgExt:Array = getImageExtensions();

                         var jsonExt:Array = getJsonExtensions();

                         var mp3Ext:Array = getMp3Extensions();

                         var swfExt:Array = getSWFExtensions();

                         var txtExt:Array = getTxtExtensions();

                         var videoExt:Array = getVideoExtensions();

                         var xmlExt:Array = getXMLExtensions();

                         _typeRegexpMap.put(AssetType.AAC, getRegexp(aacExt));

                         _typeRegexpMap.put(AssetType.CSS, getRegexp(cssExt));

                         _typeRegexpMap.put(AssetType.IMAGE, getRegexp(imgExt));

                         _typeRegexpMap.put(AssetType.JSON, getRegexp(jsonExt));

                         _typeRegexpMap.put(AssetType.MP3, getRegexp(mp3Ext));

                         _typeRegexpMap.put(AssetType.SWF, getRegexp(swfExt));

                         _typeRegexpMap.put(AssetType.TXT, getRegexp(txtExt));

                         _typeRegexpMap.put(AssetType.VIDEO, getRegexp(videoExt));

                         _typeRegexpMap.put(AssetType.XML, getRegexp(xmlExt));

                 }

                 public function getAssetType(src:String):AssetType

                 {

                         if (StringUtil.isBlank(src)) throw new ArgumentError("Argument <src> must not be null nor an empty String.");

                         var type:AssetType;

                         var regexp:RegExp;

                         var it:IIterator = _typeRegexpMap.iterator();

                         while (it.hasNext())

                         {

                                 regexp = it.next();

                                 type = it.pointer();

                                 if (src.search(regexp) != -1) return type;

                         }

                         return null;

                 }

                 private function getAACExtensions(): Array

                 {

                         var ext:Array = [];

                         ext.push("aac");

                         ext.push("m4a");

                         ext.push("m4b");

                         ext.push("m4p");

                         ext.push("m4v");

                         ext.push("m4r");

                         return ext;

                 }

                 private function getCSSExtensions(): Array

                 {

                         var ext:Array = [];

                         ext.push("css");

                         return ext;

                 }

                 private function getImageExtensions(): Array

                 {

                         var ext:Array = [];

                         ext.push("jpg");

                         ext.push("png");

                         return ext;

                 }

                 private function getJsonExtensions(): Array

                 {

                         var ext:Array = [];

                         ext.push("json");

                         return ext;

                 }

                 private function getMp3Extensions(): Array

                 {

                         var ext:Array = [];

                         ext.push("mp3");

                         return ext;

                 }

                 private function getSWFExtensions(): Array

                 {

                         var ext:Array = [];

                         ext.push("swf");

                         return ext;

                 }

                 private function getTxtExtensions(): Array

                 {

                         var ext:Array = [];

                         ext.push("asp");

                         ext.push("aspx");

                         ext.push("jsp");

                         ext.push("php");

                         ext.push("txt");

                         return ext;

                 }

                 private function getVideoExtensions(): Array

                 {

                         var ext:Array = [];

                         ext.push("flv");

                         ext.push("f4v");

                         ext.push("mov");

                         ext.push("mpg");

                         ext.push("mpeg");

                         ext.push("mp4");

                         ext.push("mp4v");

                         ext.push("3gp");

                         ext.push("3g2");

                         return ext;

                 }

                 private function getXMLExtensions(): Array

                 {

                         var ext:Array = [];

                         ext.push("xml");

                         return ext;

                 }

                 private function getRegexp(ext:Array): RegExp

                 {

                         var l:int = ext.length;

                         var r:String = "^.+\.(";

                         for (var i:int = 0; i < l; i++)

                         {

                                 r += "(" + ext[i] + ")";

                                 if (i + 1 < l) r += "|";

                         }

                         r += ")";

                         var regexp:RegExp = new RegExp(r, "i");

                         return regexp;

                 }

         }

 }