/* search.js 
   This module implements all dynamic functionality for search.html, by providing
   various functions used in callbacks.

   External objects:
   init_function() - Function that is executed while search.html
   smod(event) - Function executed when the search term changes.
   change_index(URI) - Change the current index used for searching to the given URI.
*/

var chart;
var q = ""; // global of last run query
var cache_base = "http://search.isc.swlabs.org";
var un = false; //username global
var tok = false; // token global

/* Function executed while loading search.html*/
function init_function()
{
    read_cookies();
    set_login();
    hasher();
    window.setInterval("hasher()",500);
}



/* Change search term to that specified in "mq" */
function smod(e)
{
    //$("sr-results").innerHTML += "Loading more results for '"+$("mq").value.escapeHTML();
    cache_base = "http://search.isc.swlabs.org";
    perform_full_search($("mq").value);

    if(e) e.returnValue = false;
    try {if(e) e.preventDefault();} catch (ex) {}
    return false;
}

/* Change the indexer URL to base */

function change_index(base, c_base)
{
    if (typeof c_base == 'undefined' ) c_base = "http://search.isc.swlabs.org";
    cache_base = c_base;
    $("sr-results").innerHTML = "Loading results for '"+q+"'";
    var s = document.createElement('script');
    s.src = base + "?query="+ q +"&hitsPerSite=2&lang=en&hitsPerPage=10&type=json&start=0";
    document.getElementsByTagName('head')[0].appendChild(s);
    return false;
}

function set_login()
{
    if (un && tok)
    {
	$("li-welcome").innerHTML = "Hello " + un;
	$("li-box").style.display = "block";
	$("lo-box").style.display = "none";
	$("tabs").style.display = "block";
    }
    else
    {
	$("lo-box").style.display = "block";
	$("tabs").style.display = "none";
    }
}

function read_cookies()
{
    un = getCookie("wikicitiesUserName");
    tok = getCookie("wikicitiesToken");
}

function getCookie(name)
{  
    var C = document.cookie.split("; ");
    for (i=0; i < C.length; i++)
    {
	kv = C[i].split("=");
	if(kv[0] == name){ return kv[1]; }
    }
    return false;
}

function comma(number) {
    number = '' + number;
  
    if (number.length > 3) {  
	var mod = number.length % 3;
	var output = (mod > 0 ? (number.substring(0,mod)) : '');
      
	for (i=0 ; i < Math.floor(number.length / 3); i++) {
	    if ((mod == 0) && (i == 0)) {
		output += number.substring(mod+ 3 * i, mod + 3 * i + 3);
	    } else {
		output+= ',' + number.substring(mod + 3 * i, mod + 3 * i + 3);
	    }
	}
  
	return (output);
  
    }
  
    else return number;
}

function srfetch(query, start)
{
    q = query;
    if(q == ""){ return; }
    if(document.location.hash != "#"+q && document.location.hash != "#"+encodeURIComponent(q)) document.location.hash = "#"+encodeURIComponent(q);
    $("q").value = q;
    $("mq").value = q;
    $("query").innerHTML = q.escapeHTML();
    $("result-q").innerHTML = q.escapeHTML();
    $("discuss-result-link").innerHTML = '(<a href="http://search.wikia.com/wiki/Mini_talk:'+encodeURIComponent(q)+'">discuss these results</a>)';
    $("mini-title").innerHTML = q.escapeHTML();

    var head = document.getElementsByTagName('head')[0];

    cache_base = "http://search.isc.swlabs.org";
    // get results
    //alert("http://search.isc.swlabs.org/nutchsearch?query="+ encodeURIComponent(q) +"&amp;hitsPerSite=2&amp;lang=en&amp;hitsPerPage=10&amp;type=json&amp;start=" + start);
    var s = document.createElement('script');
    s.src = "http://not-quite-ready-yet.index.swlabs.org/nutchsearch?query="+ encodeURIComponent(q) +"&hitsPerSite=1&lang=en&hitsPerPage=10&type=json&start=" + start;
    head.appendChild(s);

    // also get any mini article
    var s = document.createElement('script');
    s.src = "http://search.wikia.com/index.php?action=ajax&rs=wfGetArticleJSON&rsargs%5B%5D=Mini:" + encodeURIComponent(q);
    head.appendChild(s);

    // also get any people
    var s = document.createElement('script');
    s.src = "http://alpha.search.wikia.com:8983/solr/select/?start=0&row=20&wt=json&json.wrf=processPeople&indent=true&q=" + encodeURIComponent(q);
    head.appendChild(s);
}





var lasthash = "";


function hasher()
{
    if(document.location.hash == lasthash)
    {
	return;
    }
    lasthash = document.location.hash;
    try
    {
	var newq = document.location.hash.substr(1);
    }
    catch (e)
    {
	throw "Error failed to decode URI:" + document.location.hash.substr(1);
    }
    perform_full_search(newq);
}

function perform_full_search(query)
{
    RedirectQuery.handle(query);
    $("sr-results").innerHTML = "Loading results for '"+query.escapeHTML()+"'";
    srfetch(query,0);
    DictionaryQuery.handle(query);
    MathQuery.handle(query);
    IntegralQuery.handle(query);
//    DictionaryQuery.handle(query) coming soon.
}


// break out results since we accidentially (and temporarily) overloaded this function
function processJSON(j)
{
    if(j)
    {
	if(j.search)
	{
	    processResult(j.search);
	}else if(j.html){
	    processMini(j);
	}
    }else{
	// only mini article so far doesn't return anything
        $("sr-mini-tr").innerHTML = '';
        $("sr-mini-controls").innerHTML = "";
	$("sr-mini-content").innerHTML = 'We do not have a mini article about "'+q.escapeHTML()+'".  Improve the search results for everyone by <a href="http://search.wikia.com/index.php?title=Mini:'+q+'&amp;action=edit">starting</a> this article!';
    }
}

function processPeople(r)
{
    var docs = r.response.docs;
    var p = $("sr-people-content");
  
    p.innerHTML = '';
  
    if (docs.length != 0) {
	for(var i=0; i < docs.length; i++) {
	
	    if (docs[i]) {
		if((docs[i].defaultPhotoSet)) {
		    p.innerHTML += '<a href="http://alpha.search.wikia.com/profile/profile.html?vuid='+docs[i].userId+'"><img src="http://search1.wikia.nocookie.net/photos/users/'+docs[i].userId+'-'+docs[i].defaultPhotoSet+'m.jpg" alt="'+docs[i].name+'" title="'+docs[i].name+'" border="0"></a>';
		} else {
		    p.innerHTML += '<a href="http://alpha.search.wikia.com/profile/profile.html?vuid='+docs[i].userId+'"><img src="http://search1.wikia.nocookie.net/images/nophotom.png" border="0" alt="'+docs[i].name+'" title="'+docs[i].name+'" /></a>';
		}
			
		if (((i+1)%4==0) || (i==docs.length-1)) {
		    p.innerHTML += '<div class="cleared"></div>';
		}
			
	    }
		
	}

    } else {
	p.innerHTML += '<div id="sr-people-none"><a href="http://alpha.search.wikia.com/profile/choosepersonal.html">List yourself here</a></div>';
    }

  
  
}

// star rating stuffs
function iStar(n)
{
    return '<img onclick="clickVoteStars('+rid+','+n+');" onmouseover="updateRating('+rid+','+n+',5);" onmouseout="startClearRating('+rid+',5,0);" id="rating_'+rid+'_'+n+'" src="http://images.wikia.com/openserving/sports/images/star_on.gif" alt="" height="12" width="12" />';
}

var MaxRating = 5;
var clearRatingTimer = "";
var voted_new = new Array();
	
var id=0;
var last_id = 0;

function startClearRating(id,rating,voted)
{
    clearRatingTimer = setTimeout("clearRating('" + id + "',0," + rating + "," + voted + ")",200);
}

function clearRating(id,num,prev_rating,voted)
{
    if(voted_new[id])voted=voted_new[id];
		
    for (var x=1;x<=MaxRating;x++) {
	if(voted){
	    star_on = "voted";
	    old_rating = voted;
	}else{	
	    star_on = "on";
	    old_rating = prev_rating;
	}
	if(!num && old_rating >= x){
	    $("rating_" + id + "_" + x).src = "http://images.wikia.com/openserving/sports/images/star_" + star_on + ".gif";
	}else{
	    $("rating_" + id + "_" + x).src = "http://images.wikia.com/openserving/sports/images/star_off.gif";
	}
    }
}
	
function updateRating(id,num,prev_rating)
{
    if(clearRatingTimer && last_id==id)clearTimeout(clearRatingTimer);
    clearRating(id,num,prev_rating);
    for (var x=1;x<=num;x++) {
	$("rating_" + id + "_" + x).src = "http://images.wikia.com/openserving/sports/images/star_voted.gif";
    }
    last_id = id;
}

var showWarn = true;
function clickVoteStars(id,rating)
{
    if(showWarn) alert("We're currently using these just to test out the star rating system and are not yet storing them permanently.");
    showWarn = false;
    voted_new[id] = rating;
    new Ajax.Request("/do/log", { method: 'post', postBody: q+'\n'+rating+'\n'+results[id].fields.url+'\n\n' });
}

function voteShow(id)
{
    $('stars_'+id).style.display='inline';
}

function voteHide(id)
{
    if(voted_new[id]) return;
    $('stars_'+id).style.display='none';
}

var rid=0;
var results = new Array();
function processResult(search)
{
    var sr = $("sr-results");
    if (sr.innerHTML.substr(0,7) == "Loading") {
	sr.innerHTML = "";
    }
  
    if(search.numberOfHits == 0)
    {
	$("count").innerHTML = ":(";
	$("span").innerHTML = "0";
	$("sr-bottom").hide();
	return;
    }
  
    // update/show fields on results screen
    $("sr-bottom").show();
    $("count").innerHTML = comma(search.numberOfHits);
    $("span").innerHTML = (search.numberOfHits > 9)?"1-10":"1-"+search.numberOfHits+" ";
    var last1="";
    var rehost = /http:\/\/([^\/]+)/i;
    var rekw = new RegExp("("+search.query+")","ig");
    // String created for each result.
    var template =  '\
<div class="result-item" onmouseover="voteShow(#{rid});" onmouseout="voteHide(#{rid})">\
<div class="result-item-title"><a href="#{docUrl}">#{docTitle}</a></div>\
    <div class="result-item-blurb">#{docSummary}</div>\
<div class="result-item-full-url">\
    <span class="result-item-sub-links">\
        #{docUrlStr}\
        <a href="#{cache_base}/cached.jsp?idx=#{docIndexNo}&amp;id=#{docIndexDocNo}&amp;query=#{searchQuery}">\
            Cached</a> - \
        <a href="#{cache_base}/explain.jsp?idx=#{docIndexNo}&amp;id=#{docIndexDocNo}&amp;query="#{searchQuery}">\
            #{docBoost}</a>\
    </span>\
    <span id="stars_#{rid}" style="display:none"><nobr>#{starSeq}</nobr></span>\
</div>\
</div>';

    for (var i=0;i < search.documents.length; i++)
    {
	rid++; // unique result id
	results[rid] = search.documents[i];
	var doc = search.documents[i];
	var url = new String(doc.fields.url);
	var host = url.match(rehost);
	var docSummary = doc.summary != "" ? doc.summary: "...";
    
	// Hilight keywords.
	var keyword_split = "</span><b onmouseover='context(this)'>$1</b><span>"
	    docSummary = docSummary.replace(rekw, keyword_split);
	docSummary = '<span>'+docSummary+'</span>';

	var params = {
	    'rid' : rid,
	    'cache_base' : cache_base,
	    'docUrl' : doc.fields.url,
	    'docTitle' : doc.fields.title != ""? doc.fields.title : search.query,
	    'docSummary' : docSummary,
	    'docUrlStr' : url.length > 52? url.substr(0,52) + "... - " : doc.fields.url + ' - ',
	    'docIndexNo' : doc.indexNo,
	    'docIndexDocNo' : doc.indexDocumentNo,
	    'searchQuery' : search.Query,
	    'docBoost' : doc.fields.boost,
	    'starSeq' : iStar(1)+iStar(2)+iStar(3)+iStar(4)+iStar(5)
	}

	var htm = template.interpolate(params);
	if(host[0] == last1) { htm = '<blockquote>' + htm + '</blockquote>'; }
	last1 = host[0]; // for next result indentation

	sr.innerHTML += htm;
    }

    var hitsPerPage = 10;
    if(search.end - search.start  >= hitsPerPage)
    {
	sr.innerHTML += '<div id="sr-more-results-' + search.end + '" class="sr-more-results"><div class="sr-more-results-top"><div class="sr-more-results-tl"></div><div class="sr-more-results-tr"></div></div><div class="sr-more-results-content"><a id="sr-more-link-' + search.end + '" href="javascript:srfetch(q,'+(search.end)+'); convert_to_span(\'sr-more-link-'+search.end + '\');void(0)">Results '+(search.end+1)+' to '+(search.end+10)+'</a></div><div class="sr-more-results-bottom"><div class="sr-more-results-bl"></div><div class="sr-more-results-br"></div></div></div>';
    }
    else
    {
	sr.innerHTML += '<div id="sr-no-more-results" class="sr-no-more-results">No more results have been found. Perhaps try less restrictive search terms...</div>'
    }
}

function convert_to_span(id)
{
    var element = document.getElementById(id);
    var parent = element.parentNode;
    var replacement = document.createElement("span");
    replacement.class = "frozen-link";
    replacement.innerHTML = element.innerHTML;
    parent.insertBefore(replacement, element);
    parent.removeChild(element);
}

function processMini(j)
{
    $("sr-mini-content").innerHTML = j.html;
    $("sr-mini-controls").innerHTML = "";
  
    $("sr-mini-tr").innerHTML = '<img src="http://re.search.wikia.com/images/edit.gif" alt="" border="0"/> <a href="http://search.wikia.com/index.php?title=Mini:'+q+'&amp;action=edit">Edit</a>';
  
    if (j.html!="") {
	$("sr-mini-controls").innerHTML = '';
	$("sr-mini-controls").innerHTML += '<span id="sr-mini-toggle-button"><a href="javascript:toggleMini()">Expand</a></span> - ';
	$("sr-mini-controls").innerHTML += '<a href="http://search.wikia.com/index.php?title=Mini:'+q+'&amp;action=history">History</a> - <a href="http://search.wikia.com/index.php?title=Mini:'+q+'">Full Article</a>';
    }

}

function context(e)
{
    var kw = $(e);
    var more;
    if(kw.next() && kw.next().tagName == "SPAN")
    {
	var stub = kw.next().innerHTML.match(/(.+?)\W{2,}/);
	more = (stub)?stub[0]:kw.next().innerHTML;
	if(more.length > 3)
	{
	    kw.style.textDecoration = "underline";
	    kw.next().style.textDecoration = "underline";
	    kw.onmouseout = function (){ this.style.textDecoration = ""; this.next().style.textDecoration = ""; }
	    kw.onclick = function () {
		$("sr-results").innerHTML = "";
		srfetch(kw.innerHTML + more.unescapeHTML(),0);
	    }
	}
    }
    return false;
}

function boost(amount)
{
    amount -= 0;
    amount = (Math.round(amount*100))/100;
    return (amount == Math.floor(amount)) ? amount + '.00' : (  (amount*10 == Math.floor(amount*10)) ? amount + '0' : amount);
}

function toggleMini() {  
  
    if ($("sr-mini-content").hasClassName("collapsed")) {
  
	$("sr-mini-content").removeClassName("collapsed");
	$("sr-mini-content").addClassName("expanded");
	$("sr-mini-toggle-button").innerHTML = '<a href="javascript:toggleMini()">Collapse</a>';
  
    } else {
  
	$("sr-mini-content").removeClassName("expanded");
	$("sr-mini-content").addClassName("collapsed");
	$("sr-mini-toggle-button").innerHTML = '<a href="javascript:toggleMini()">Expand</a>';
    
    }
}


function load_search_terms()
{
    window.location.href= '#' + encodeURIComponent(document.forms[0].q.value);
}


/* Perform testing for all modules. */
function test()
{
    Calculate.test();
}

//test();