TellmeaboutUrl = SNIP_BASE + "tellmeabout/tellmeabout-service.php";

//function tellmeabout(id,text,callback,includeNoActions) {
//	if ( arguments.length < 4 ) includeNoActions = false;
function tellmeabout(id,text,callback,opts) {
	if ( arguments.length < 4 ) opts = {};
	doAjaxCall(TellmeaboutUrl,{ text: text, op: 'actions', key: opts.key },tellmeaboutResponse,{ id: id, text: text, callback: callback, includeNoActions: opts.includeNoActions });
}

//function tellmeabout_snip(id,snipid,callback,includeNoActions) {
//	if ( arguments.length < 4 ) includeNoActions = false;
function tellmeabout_snip(id,snipid,callback,opts) {
	if ( arguments.length < 4 ) opts = {};
	doAjaxCall(TellmeaboutUrl,{ snipid: snipid, op: 'actions', key: opts.key },tellmeaboutResponse,{ id: id, snipid: snipid, callback: callback, includeNoActions: opts.includeNoActions });
}

//function tellmeabout_url(id,url,callback,includeNoActions) {
//	if ( arguments.length < 4 ) includeNoActions = false;
function tellmeabout_url(id,url,callback,opts) {
	if ( arguments.length < 4 ) opts = {};
	doAjaxCall(TellmeaboutUrl,{ text: url, type: 'url', op: 'actions', key: opts.key },tellmeaboutResponse,{ id: id, url: url, callback: callback, includeNoActions: opts.includeNoActions });
}

function tellmeaboutResponse(status,ajaxreq,data) {
	//debug("tellmeaboutResponse: "+status);
	var text = data.text;
	var callback = data.callback;
	var req_id = data.id;
	var includeNoActions = data.includeNoActions;
	
	if ( ! status ) {
		//debug("tellmeaboutResponse(" + req_id + "): "+status);
		return;
	}
	var xml = ajaxreq.responseXML;
	var xmlMatches = xml.getElementsByTagName("match");
	//debug("nos matches = "+xmlMatches.length);

	var matches = new Array();
	var nosMatches = 0;
	for ( n=0; n<xmlMatches.length; n++ ) {
		var xmlMatch = xmlMatches[n];
		var match = readMatch(xmlMatch);
		if ( includeNoActions || match.actions.length > 0 ) {
			//debug(match.type + " has " + match.actions.length + " actions");
			matches[nosMatches++] = match;
		}
	}
	callback(req_id,matches);
}

function readMatch(xmlMatch) {
	var type = xmlMatch.getElementsByTagName("type")[0].firstChild.nodeValue;
	var title = xmlMatch.getElementsByTagName("title")[0].firstChild.nodeValue;
	var actionsXML = xmlMatch.getElementsByTagName("action");
	var nosActions =  actionsXML.length;
	
	//debug("readMatch: type="+type);

	var actions = new Array();
	for ( var c = 0; c<nosActions; c++ ) {
		var actionXML = actionsXML[c];
		var action = readAction(actionXML)
		actions[c] = action;
	}
	
	return { type: type, title: title, actions: actions };
}


/*
      <action>
        <description>
          lookup words like "text" in thesaurus.com
        </description>
        <url>
          http://www.thesaurus.com/cgi-bin/search?config=roget&words=text
        </url>
        <info>
          
        </info>
      </action>

*/

function readAction(actionXML) {
	//debug("readAction:");
	//debug("readAction trim(   abc   ): (" + trim("   abc   " ) +  ")");
	//debugXML(actionXML);
	//var description = trim( actionXML.getElementsByTagName("description")[0].firstChild.nodeValue );
	var description = getElementText(actionXML,"description");
	//debug("description OK");
	//var url = trim( actionXML.getElementsByTagName("url")[0].firstChild.nodeValue );
	var url = getElementText(actionXML,"url");
	//debug("url OK");
	//var info = trim( actionXML.getElementsByTagName("info")[0].firstChild.nodeValue );
	var info = getElementText(actionXML,"info");
	//debug("info OK");
	var iconXML_list = actionXML.getElementsByTagName("icon");
	//debug("iconXML_list OK");
	var icon, iconW, iconH;
	if ( iconXML_list.length > 0 ) {
		var iconXML=iconXML_list[0];
		icon = iconXML.getAttribute('src');
		iconH = iconXML.getAttribute('width');
		iconW = iconXML.getAttribute('height');
	} else {
		icon = "";
		iconH = 0;
		iconW = 0;
	}
	//debug("finished readAction {description: "+description+", url: "+url+", info: "+info+" }");
	return { description: description, url: url, info: info, icon: icon, iconW: iconW, iconH: iconH };
}