/**
 * Licensed to The Apereo Foundation under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.
 *
 *
 * The Apereo Foundation licenses this file to you under the Educational
 * Community License, Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of the License
 * at:
 *
 *   http://opensource.org/licenses/ecl2.txt
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 *
 */
 
var Opencast = Opencast || {};

/**
 * @namespace the global Opencast namespace FlashVersion
 */
Opencast.FlashVersion = (function ()
{
    // Globals
    // Major version of Flash required
    var requiredMajorVersion = 10;
    // Minor version of Flash required
    var requiredMinorVersion = 1;
    // Minor version of Flash required
    var requiredRevision = 0;
	// Flash Player Version Detection - Rev 1.6
    // Copyright(c) 2005-2006 Adobe Macromedia Software, LLC. All rights reserved.
    
    // Browser detection
    var isIE = $.browser.msie||false;        // Internet Explorer
    var isOpera = $.browser.opera||false;    // Opera
    // Operating system detection
    var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false; // Windows
    
    /**
     @memberOf Opencast.FlashVersion
     @description control of the current flash version.
     */
    function ControlVersion()
{
	var version;
	var axo;
	var e;

	// NOTE : new ActiveXObject(strFoo) throws an exception if strFoo isn't in the registry

	try {
		// version will be set for 7.X or greater players
		axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.7");
		version = axo.GetVariable("$version");
	} catch (e) {
	}

	if (!version)
	{
		try {
			// version will be set for 6.X players only
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.6");
			
			// installed player is some revision of 6.0
			// GetVariable("$version") crashes for versions 6.0.22 through 6.0.29,
			// so we have to be careful. 
			
			// default to the first public version
			version = "WIN 6,0,21,0";

			// throws if AllowScripAccess does not exist (introduced in 6.0r47)		
			axo.AllowScriptAccess = "always";

			// safe to call for 6.0r47 or greater
			version = axo.GetVariable("$version");

		} catch (e) {
		}
	}

	if (!version)
	{
		try {
			// version will be set for 4.X or 5.X player
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
			version = axo.GetVariable("$version");
		} catch (e) {
		}
	}

	if (!version)
	{
		try {
			// version will be set for 3.X player
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
			version = "WIN 3,0,18,0";
		} catch (e) {
		}
	}

	if (!version)
	{
		try {
			// version will be set for 2.X player
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
			version = "WIN 2,0,0,11";
		} catch (e) {
			version = -1;
		}
	}
	
	return version;
}
    
 // JavaScript helper required to detect Flash Player PlugIn version information
function GetSwfVer(){
	// NS/Opera version >= 3 check for Flash plugin in plugin array
	var flashVer = -1;
	
	if (navigator.plugins != null && navigator.plugins.length > 0) {
		if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) {
			var swVer2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
			var flashDescription = navigator.plugins["Shockwave Flash" + swVer2].description;
			var descArray = flashDescription.split(" ");
			var tempArrayMajor = descArray[2].split(".");			
			var versionMajor = tempArrayMajor[0];
			var versionMinor = tempArrayMajor[1];
			var versionRevision = descArray[3];
			if (versionRevision == "") {
				versionRevision = descArray[4];
			}
			if (versionRevision[0] == "d") {
				versionRevision = versionRevision.substring(1);
			} else if (versionRevision[0] == "r") {
				versionRevision = versionRevision.substring(1);
				if (versionRevision.indexOf("d") > 0) {
					versionRevision = versionRevision.substring(0, versionRevision.indexOf("d"));
				}
			} else if (versionRevision[0] == "b") {
				versionRevision = versionRevision.substring(1);
			}
			var flashVer = versionMajor + "." + versionMinor + "." + versionRevision;
		}
	}
  // MSN/WebTV 2.6 supports Flash 4
	else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.6") != -1) flashVer = 4;
	// WebTV 2.5 supports Flash 3
	else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.5") != -1) flashVer = 3;
	// older WebTV supports Flash 2
	else if (navigator.userAgent.toLowerCase().indexOf("webtv") != -1) flashVer = 2;
	else if ( isIE && isWin && !isOpera ) {
		flashVer = ControlVersion();
	}
	return flashVer;
}
    
 // When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision)
{
	versionStr = GetSwfVer();
	if (versionStr == -1 ) {
		return false;
	} else if (versionStr != 0) {
		if(isIE && isWin && !isOpera) {
			// Given "WIN 2,0,0,11"
			tempArray         = versionStr.split(" "); 	// ["WIN", "2,0,0,11"]
			tempString        = tempArray[1];			// "2,0,0,11"
			versionArray      = tempString.split(",");	// ['2', '0', '0', '11']
		} else {
			versionArray      = versionStr.split(".");
		}
		var versionMajor      = versionArray[0];
		var versionMinor      = versionArray[1];
		var versionRevision   = versionArray[2];

        	// is the major.revision >= requested major.revision AND the minor version >= requested minor
		if (versionMajor > parseFloat(reqMajorVer)) {
			return true;
		} else if (versionMajor == parseFloat(reqMajorVer)) {
			if (versionMinor > parseFloat(reqMinorVer))
				return true;
			else if (versionMinor == parseFloat(reqMinorVer)) {
				if (versionRevision >= parseFloat(reqRevision))
					return true;
			}
		}
		return false;
	}
}

function AC_AddExtension(src, ext)
{
  var qIndex = src.indexOf('?');
  if ( qIndex != -1)
  {
    // Add the extention (if needed) before the query params
    var path = src.substring(0, qIndex);
    if (path.length >= ext.length && path.lastIndexOf(ext) == (path.length - ext.length))
      return src;
    else
      return src.replace(/\?/, ext+'?'); 
  }
  else
  {
    // Add the extension (if needed) to the end of the URL
    if (src.length >= ext.length && src.lastIndexOf(ext) == (src.length - ext.length))
      return src;  // Already have extension
    else
      return src + ext;
  }
}

    function AC_Generateobj(objAttrs, params, embedAttrs)
    {
        var str = '';
        if (isIE && isWin && !isOpera)
        {
            str += '<object ';
            for (var i in objAttrs)
            str += i + '="' + objAttrs[i] + '" ';
            str += '>';
            for (var i in params)
            str += '<param name="' + i + '" value="' + params[i] + '" /> ';
            str += '</object>';
        }
        else
        {
            str += '<object id="oc_Videodisplay" codeBase="http://fpdownload.macromedia.com/get/flashplayer/current/swflash.cab" width="100%" height="100%" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000">';
            str += '<param name ="movie" value="Videodisplay.swf" >';
            str += '<param name="quality"value="high">';
            str += '<param name="allowScriptAccess" value="sameDomain" />';
            str += '<param name="bgcolor" value="#000000" />';
            str += '<param name="allowFullScreen" value="true" />';
            str += '<param name="wmode" value="transparent" />'
            str += '<param name="flashvars" value="bridgeName=b_Videodisplay&amp;autoplay=false"/>';
            str += '<embed wmode="transparent" style="z-index: 100;"';
            for (var i in embedAttrs)
            {
                str += i + '="' + embedAttrs[i] + '" ';
            }
            // str += '> </embed></object>';
            str += ' /></object>';
        }
        var playerType = Opencast.engage.getPlayerType();
        if (playerType === "/engage/ui/embed.html")
        {
            // check if URL parameters are duplicate. If so: reload with cleaned URL
            $.gotoCleanedURL();
                
            var play = $.getURLParameter('play');
            if ((play === null) || (play !== "true"))
            {
                str = '<input id="oc_image" type="image" src="" alt="Matterhorn Player" title="Click to start" />';
                $('#oc_flash-player-loading').hide();
                $('#oc_player_video-dropdown').css('visibility', 'hidden');
                $('#data').hide();
            } else
            {
                $('#oc_flash-player-loading').show();
                $('#oc_player_video-dropdown').css('visibility', 'visible');
            }
        }
        // DO NOT CHANGE THIS. IE8 Flash 10.0 cannot handle adding the SWF by jquery
        document.write(str);
    }

    function AC_FL_RunContent()
    {
        var ret =
        AC_GetArgs(arguments, ".swf", "movie", "clsid:d27cdb6e-ae6d-11cf-96b8-444553540000", "application/x-shockwave-flash");
        AC_Generateobj(ret.objAttrs, ret.params, ret.embedAttrs);
    }

	

   function AC_GetArgs(args, ext, srcParamName, classid, mimeType){
  var ret = new Object();
  ret.embedAttrs = new Object();
  ret.params = new Object();
  ret.objAttrs = new Object();
  for (var i=0; i < args.length; i=i+2){
    var currArg = args[i].toLowerCase();    

    switch (currArg){	
      case "classid":
        break;
      case "pluginspage":
        ret.embedAttrs[args[i]] = args[i+1];
        break;
      case "src":
      case "movie":	
        args[i+1] = AC_AddExtension(args[i+1], ext);
        ret.embedAttrs["src"] = args[i+1];
        ret.params[srcParamName] = args[i+1];
        break;
      case "onafterupdate":
      case "onbeforeupdate":
      case "onblur":
      case "oncellchange":
      case "onclick":
      case "ondblClick":
      case "ondrag":
      case "ondragend":
      case "ondragenter":
      case "ondragleave":
      case "ondragover":
      case "ondrop":
      case "onfinish":
      case "onfocus":
      case "onhelp":
      case "onmousedown":
      case "onmouseup":
      case "onmouseover":
      case "onmousemove":
      case "onmouseout":
      case "onkeypress":
      case "onkeydown":
      case "onkeyup":
      case "onload":
      case "onlosecapture":
      case "onpropertychange":
      case "onreadystatechange":
      case "onrowsdelete":
      case "onrowenter":
      case "onrowexit":
      case "onrowsinserted":
      case "onstart":
      case "onscroll":
      case "onbeforeeditfocus":
      case "onactivate":
      case "onbeforedeactivate":
      case "ondeactivate":
      case "type":
      case "codebase":
        ret.objAttrs[args[i]] = args[i+1];
        break;
      case "id":
      case "width":
      case "height":
      case "align":
      case "vspace": 
      case "hspace":
      case "class":
      case "title":
      case "accesskey":
      case "name":
      case "tabindex":
        ret.embedAttrs[args[i]] = ret.objAttrs[args[i]] = args[i+1];
        break;
      default:
        ret.embedAttrs[args[i]] = ret.params[args[i]] = args[i+1];
    }
  }
  ret.objAttrs["classid"] = classid;
  if (mimeType) ret.embedAttrs["type"] = mimeType;
  return ret;
}

    // Version check for the Flash Player that has the ability to start Player Product Install (6.0r65)
    var hasProductInstall = DetectFlashVer(6, 0, 65);
    // Version check based upon the values defined in globals
    var hasRequestedVersion = DetectFlashVer(requiredMajorVersion, requiredMinorVersion, requiredRevision);
    if (hasProductInstall && !hasRequestedVersion)
    {
        // DO NOT MODIFY THE FOLLOWING FOUR LINES
        // Location visited after installation is complete if installation is required
        var MMPlayerType = (isIE === true) ? "ActiveX" : "PlugIn";
        var MMredirectURL = window.location;
        document.title = document.title.slice(0, 47) + " - Flash Player Installation";
        var MMdoctitle = document.title;
        AC_FL_RunContent("src", "playerProductInstall.swf", "FlashVars", "MMredirectURL=" + MMredirectURL + '&MMplayerType=' + MMPlayerType + '&MMdoctitle=' + MMdoctitle + "", "width", "100%", "height", "100%", "align", "middle", "id", "oc_Videodisplay", "quality", "high", "bgcolor", "#FFFFFF", "name", "Videodisplay", "allowScriptAccess", "sameDomain", "type", "application/x-shockwave-flash", "wmode", "transparent", "pluginspage", "http://www.adobe.com/go/getflashplayer");
    
		var alternateContent = 'Matterhorn requires Adobe Flash Player.<br>' + 'Please install latest version for your OS.<br>(Version 10.1 or later) ' + '<a href="http://www.adobe.com/go/getflash/">Get Flash</a>';
        //document.write(alternateContent);  // insert non-flash content
        $("#oc_flash-player").html(alternateContent);
        $('#initializing').html("Please update your Flash version.");
        $('#loading-init').hide();
	
	}
    else if (hasRequestedVersion)
    {
        // if we've detected an acceptable version
        // embed the Flash Content SWF when all tests are passed
        AC_FL_RunContent("src", "Videodisplay.swf", "width", "100%", "height", "100%", "id", "oc_Videodisplay", "quality", "high", "bgcolor", "#FFFFFF", "name", "Videodisplay", "allowfullscreen", "true", "flashvars", "bridgeName=b_Videodisplay&amp;autoplay=false", "allowScriptAccess", "sameDomain", "type", "application/x-shockwave-flash", "wmode", "transparent", "pluginspage", "http://www.adobe.com/go/getflashplayer");
    }
    else
    {
		 // flash is too old or we can't detect the plugin
        var alternateContent = 'Matterhorn requires Adobe Flash Player.<br>' + 'Please install latest version for your OS.<br>(Version 10.1 or later) ' + '<a href="http://www.adobe.com/go/getflash/">Get Flash</a>';
        //document.write(alternateContent);  // insert non-flash content
        $("#oc_flash-player").html(alternateContent);
        $('#initializing').html("No Flash plugin found.");
        $('#loading-init').hide();
    }
    return {
    };
}());