/*

search support functions

- must call the ajax_search.asp function
- puts results into <div> with id "resultsarea"
- called from a button named "searchbutton"


*/

var rRoads = new Array();
var rFeatures = new Array();
var rPoints = new Array();


function ScrubDupes(arr)
{
    var ret = new Array();
   
    for (l=0;l<arr.length;l++) {
        e = arr[l];
        count = 0;
        avgx = 0;
        avgy = 0;
        for (l2=0;l2<arr.length;l2++) {
            if (l!=l2 && (arr[l].caption == arr[l2].caption) && (arr[l].number==arr[l2].number)) {
                count = count + 1;
                avgx += e.x*1;
                avgy += e.y*1;
                arr.splice(l2,1);
                if (l2!=0) l2--;
            }
        }

        if (count>0) {
            e.x = avgx/count;
            e.y = avgy/count;
        }
        
        ret.push(e);
    }
    return ret;
}


function Result(layer,x,y,metadata,ref,match,caption,number,cc,pri,icon)
{
	this.layer = layer;
	this.x = x;
	this.y = y;
	this.metadata = metadata;
	this.ref = ref;
	this.match = match;
	this.caption = caption;
	this.number = number;
	this.metadata_ext = "";
	this.cc = cc;
	this.icon = icon;
	this.pri = pri;
}


function GetRoadDesc(str,number)
{
	var p = str.split(",");
	var number_bit = "";
	if (number>0) {
	    number_bit = String(number)+" ";
	}
	
//  rname = toPC(p[5]) + " " + toPC(p[6]);
	rname = p[0];
//  if (toPC(p[7]).length > rname.length) rname = toPC(p[7]);
  
  var arCity = toPC(p[2]);
  var arProv = toPC(p[p.length-1]);
  var arSub = toPC(p[1]);
  var arR="";
// formerly...  if (toPC(p[12]).length>0) arR += "(Formerly "+toPC(p[12])+")<br>";
  arR += arSub;
  if (arCity!=arSub) arR += ", " + arCity;
  arR += "<br>" + arProv;

	var ret = "<span class=search_1>" + number_bit + rname + "</span><br><span class=search_2>" + arR +"</span>";
	return ret;
}

function GetPointDesc(str)
{
	var p = str.split(";");
	ret = "<span class=search_1>" + toPC(p[0]) + "</span><br><span class=search_2>(" +toPC(p[1])+ ") " + toPC(p[2]) + ", "+ toPC(p[3]) +"</span>";
	return ret;
}


function GetPointDescAd(str)
{
	var p = str.split(";");
	ret = "<div class=ad_1_h>"+toPC(p[0])+"</div><div class=ad_1_bn>"+toPC(p[1])+"</div>";
	return ret;
}


function GetCaption(ent,which)
{
	arr = ent.metadata_ext.match(/\[(.*?)\]\{(.*?)\}/g);
//	arr = null;

	if (!isNull(arr)) {
//		var p = ent.metadata.split(";");
		desc = MetaPopup(ent.caption, ent.metadata_ext, ent.ref, "search");
	} else {
	    var desc = "";
			switch (which) {
			case "road" :
		        var p = ent.metadata.split(",");
//		        rname = toPC(p[5]) + " " + toPC(p[6]);
						rname = p[0];
//		        if (toPC(p[7]).length > rname.length) rname = toPC(p[7]);
// formerly...		        if (p[8].length>0 && p[8].length<6) rname += " ("+p[8]+")";
		        desc = rname + ", " + toPC(p[2]) + ", "+ toPC(p[p.length-1]);
				break;
			case "feature" :
				desc = GetFeatureDescRaw(ent.metadata,ent.layer);
				break;
			case "point" :
						if (ent.pri) {
			        var p = ent.metadata.split(";");
		        	desc = "Name: " + toPC(p[0]) + "<br>Classification: " +toPC(p[1])+ "<br>Location: " + toPC(p[2]) + ", "+ toPC(p[3]);
						} else {
			        var p = ent.metadata.split(";");
		        	desc = "Name: " + toPC(p[0]) + "<br>Classification: " +toPC(p[1])+ "<br>Location: " + toPC(p[2]) + ", "+ toPC(p[3]);
						}
				break;
		}
	}
	return desc;
}


function CMPresults(a,b)
{
	if (a.pri>b.pri) return -1;
	if (a.pri<b.pri) return 1;
	matcha = a.match;
	matchb = b.match;
	if (a.number>0) matcha+=25;
	if (b.number>0) matchb+=25;
	if (matcha>matchb) return -1;
	if (matcha<matchb) return 1;
	if (a.caption<b.caption) return -1;
	if (a.caption>b.caption) return 1;
	return 0;
}


function MakeResultsPane(r, which)
{
	var vDiv = document.createElement("div");
    	vDiv.id = "pane_"+which;
	var vTable = document.createElement("table");
	    vDiv.appendChild(vTable);
	    vTable.style.width="100%"

	r.sort(CMPresults);
	
	for (l=0;l<r.length;l++) {
		vRow = vTable.insertRow(-1);
		vRow.vAlign = "top";
		vCell = vRow.insertCell(-1);
			vCell.vAlign = "middle";
			vCell.innerHTML = WeeBar(r[l].match,20);
			vCell.style.width="22px";
		vCell = vRow.insertCell(-1);
			vCell.style.cursor = "pointer";
			vCell.onclick = associateObjWithEvent(r[l], "ClickResult");

		var desc = which;
		switch (which) {
			case "road" :
				desc = GetRoadDesc(r[l].metadata, r[l].number);
			  	break;
			case "feature" :
				desc = GetFeatureDesc(r[l].metadata,r[l].layer);
			   	break;
			case "point" :
				if (r[l].pri) {
					desc = "<table><tr><td><img src='"+CheckIcon(r[l].icon,32)+"'></td><td>"+GetPointDescAd(r[l].metadata, r[l])+"</td></tr></table>";
				} else {
					desc = GetPointDesc(r[l].metadata, r[l]);
				}
				break;
		}
		    
		    vCell.innerHTML = desc;

		    vCell = vRow.insertCell(-1);
			vCell.vAlign = "middle";
			vCell.innerHTML = "<img src=\""+ScriptBase()+"flags/"+r[l].cc+".gif\">"
	
	}
	
	
	
	return vDiv;
}



function ClickTabRoads()
{
	getObj("pane_road").style.display="inline";
	getObj("pane_feature").style.display="none";
	getObj("pane_point").style.display="none";
	
	getObj("tab_road").className="search_tabSelected";
	getObj("tab_feature").className="search_tabNotSelected";
	getObj("tab_point").className="search_tabNotSelected";
}

function ClickTabFeatures()
{
	getObj("pane_road").style.display="none";
	getObj("pane_feature").style.display="inline";
	getObj("pane_point").style.display="none";

	getObj("tab_road").className="search_tabNotSelected";
	getObj("tab_feature").className="search_tabSelected";
	getObj("tab_point").className="search_tabNotSelected";
}

function ClickTabPoints()
{
	getObj("pane_road").style.display="none";
	getObj("pane_feature").style.display="none";
	getObj("pane_point").style.display="inline";

	getObj("tab_road").className="search_tabNotSelected";
	getObj("tab_feature").className="search_tabNotSelected";
	getObj("tab_point").className="search_tabSelected";
}



var searchMarkerLayer = null;

  function set ()
  {
    var result = {};

    for (var i = 0; i < arguments.length; i++)
      result[arguments[i]] = true;

    return result;
  }


Result.prototype.ClickResult = function(event, element)
{
	// need to put a marker up 
	if (searchMarkerLayer==null) {
		searchMarkerLayer=myMap.AddLayer("point",60,"searchmarker");
		searchMarkerLayer.SetDefaultAnchor("center","center");
	} else {
		searchMarkerLayer.RemoveAllPoints ();
	}
	caption = "<font size=-1><b>Search Result</b><br>"+this.caption+"</font>";
	if (!isUndefined(this.metadata_ext)) {
		if (this.metadata_ext.match(/\[(.*?)\]\{(.*?)\}/g)!=null) caption = this.caption;
	}
	var pt = searchMarkerLayer.AddPoint(this.x,this.y,caption,"searchmarker");
	pt.SetStyle("biglabel")

	pt.SetClickBehaviour("toggle_all_biglabel");
	pt.SetIcon("http://www.streetmaps.co.za/icon_small/0.png");
  pt.SetIconAnchor("center","center");
  pt.SetLabelAnchor("iconcenter","iconcenter");
	
	myMap.JumpTo(this.x,this.y,0.005);
}


function AJAX_Search(dat,internal)
{
	var isInternal=isUndefined(internal)?false:internal;
	gWait.Stop();
	if (dat.results==null) return;
	if (dat.results.type!="search") {
	    alert("AJAX Error");
	    return;
	}

	savedSearch = dat;

			var maxRoad=0;
			var maxFeature=0;
			var maxPoint=0;
			var count100;

    for (l=0;l<dat.results.match.length;l++) {
        var item = dat.results.match[l];
        var layer = item.layer*1;
        var x = item.x;
        var y = item.y;
        var metadata = item.metadata.replace(/\&apos\;/g,"'");
        var ref = item.ref;
//        var marker_x = item.marker_x;
//        var marker_y = item.marker_y;
        var marker_x = x;
        var marker_y = y;
        var number = item.number;
        var match = item.match*1;
        if (metadata.length==0) metadata = item.desc;
        var r = new Result(layer,marker_x,marker_y,metadata,ref,match,item.desc,number,item.cc,item.pri,item.icon);
        
        if (match==100) count100++;
        var maxTab = 'r';
        var maxAll = -1;

        if (layer in set(0,1,2,3,4,5,6,7,8,9,10,11)) {
	          r.caption = GetCaption(r,"road");
		        rRoads.push(r);
		        if (match>maxRoad) maxRoad=match;
		        if (match>maxAll) {
		        	maxAll = match;
		        	maxTab = 'r';
		        }
        } else if (layer in set(12,13,14,15,16,17,18,20,21,22,23,24,25,26,27,28)) {
	          r.caption = GetCaption(r,"feature");
		        rFeatures.push(r);
		        if (match>maxFeature) maxFeature=match;
		        if (match>maxAll) {
		        	maxAll = match;
		        	maxTab = 'f';
		        }
        } else if (layer in set(19)) {
	        	r.metadata_ext = item.metadata_ext;
	          r.caption = GetCaption(r,"point");
		        rPoints.push(r);
		        if (match>maxPoint) maxPoint=match;
		        if (match>maxAll) {
		        	maxAll = match;
		        	maxTab = 'p';
		        }
        }
    }

    rRoads = ScrubDupes(rRoads);
    rFeatures = ScrubDupes(rFeatures);
    
    showFeatures = false;
    showRoads = false;
    showPoints = false;
    
    // if there's only one match in any of the options, jump there - it's probably correct
    if (!isInternal) {
	    if (rRoads.length==1 && maxTab=='r') {
	    	rRoads[0].ClickResult(null,null);
	    	showRoads = true;
	    }
	    else if (rFeatures.length==1 && maxTab=='f') {
	    	rFeatures[0].ClickResult(null,null);
	    	showFeatures = true;
	    }
	    else if (rPoints.length==1 && maxTab=='p') {
	    	rPoints[0].ClickResult(null,null);
	    	showPoints = true;
	    }
	  }
	
    if (maxFeature>maxRoad && maxFeature>maxPoint) {
    	showFeatures = true;
    }
    
    if (!showPoints && !showFeatures && !showRoads) {
    	// nothing selected yet, let's find something
    	if (rRoads.length>0) {
    		showRoads=true;
    	} else if (rFeatures.length>0) {
    		showFeatures=true;
    	} else if (rPoints.length>0) {
    		showPoints=true;
    	}
    	else {
    		showRoads = true;
    	}
    }
    
    // if features has the max match, go there
    selRoads = showRoads?"search_tabSelected":"search_tabNotSelected";
    selFeatures = showFeatures?"search_tabSelected":"search_tabNotSelected";
    selPoints = showPoints?"search_tabSelected":"search_tabNotSelected";
    visRoads = showRoads?"inline":"none";
    visFeatures = showFeatures?"inline":"none";
    visPoints = showPoints?"inline":"none";

    // create the search results pane
    var vTable = document.createElement("table");
    var vDiv = getObj("resultsarea");
    vDiv.appendChild(vTable);
	
        vTable.className = "search_findTab";
        vTable.cellSpacing = 0;
        vTable.cellPadding = 3;
        vTable.style.height = "100%";
    var vRow = vTable.insertRow(-1);
    var vCell = vRow.insertCell(-1);
        vCell.className = selRoads;
        vCell.innerHTML = "<nobr><b>Roads</b> ("+String(rRoads.length)+")</nobr>";
        vCell.onclick = ClickTabRoads;
        vCell.align="center";
        vCell.id = "tab_road";
    vCell = vRow.insertCell(-1);
        vCell.className = selFeatures;
        vCell.innerHTML = "<nobr><b>Areas</b> ("+String(rFeatures.length)+")</nobr>";
        vCell.onclick = ClickTabFeatures;
        vCell.align="center";
        vCell.id = "tab_feature";
    vCell = vRow.insertCell(-1);
        vCell.className = selPoints;
        vCell.innerHTML = "<nobr><b>Places</b> ("+String(rPoints.length)+")</nobr>";
        vCell.onclick = ClickTabPoints;
        vCell.align="center";
        vCell.id = "tab_point";
	
    vRow = vTable.insertRow(-1);
    vCell = vRow.insertCell(-1);
    vCell.colSpan = 3;
    vCell.style.height = "50%";
	
    var vScroller = document.createElement("div");
    vScroller.style.overflowX = "hidden";
    vScroller.style.overflowY = "auto";
    vScroller.style.position = "static";
    vScroller.style.height=getObj("resultsarea").clientHeight - 30;
    vCell.appendChild(vScroller);
	
    var vRes = MakeResultsPane(rRoads,"road");
      vRes.style.display = visRoads;
      vScroller.appendChild(vRes);
    vRes = MakeResultsPane(rFeatures,"feature");
      vRes.style.display = visFeatures;
      vScroller.appendChild(vRes);
    vRes = MakeResultsPane(rPoints,"point");
      vRes.style.display = visPoints;
      vScroller.appendChild(vRes);
		
                	
		
		
    getObj("searchbutton").disabled=false;
}


	var aLayers = new Array (
		new MapLayer(12, "Park", "0","2"),
		new MapLayer(13, "Water", "0","1,2"),
		new MapLayer(14, "River", "0","1,2"),
		new MapLayer(15, "Region", "0","1"),
		new MapLayer(16, "City", "0","3"),
		new MapLayer(17, "Suburb", "0","2,5"),
		new MapLayer(19, "Place", "0","1")
	);


function MapLayer(id,description,line1,line2)
{
	this.id = id;
	this.description = description;
	this.line1 = line1;
	this.line2 = line2;
}


function GetFeatureDesc(str,layer)
{
	
	var fields = str.split(";");

	for (lc=0;lc<aLayers.length;lc++) {
		ly=aLayers[lc];
		if (ly.id==layer) {
			l1s = ly.line1.split(",");
			var l1 = "";
			for (l1l=0;l1l<l1s.length;l1l++) {
				if (l1.length>0) l1=l1+", ";
				l1=l1+fields[l1s[l1l]*1];
			}

			l2s = ly.line2.split(",");
			var l2 = "";
			for (l2l=0;l2l<l2s.length;l2l++) {
				if (l2.length>0) l2=l2+", ";
				l2=l2+fields[l2s[l2l]*1];
			}

			ret = "<span class=search_1>" +toPC(l1)+ "</span><br><span class=search_2>(" +ly.description+ ") " +toPC(l2)+ "</span>";
		}
	}
	return ret;
}


function GetFeatureDescRaw(str,layer)
{
	var fields = str.split(";");
	
	for (lc=0;lc<aLayers.length;lc++) {
		ly=aLayers[lc];
		if (ly.id==layer) {
			l1s = ly.line1.split(",");
			var l1 = "";
			for (l1l=0;l1l<l1s.length;l1l++) {
				if (l1.length>0) l1=l1+", ";
				l1=l1+fields[l1s[l1l]*1];
			}

			l2s = ly.line2.split(",");
			var l2 = "";
			for (l2l=0;l2l<l2s.length;l2l++) {
				if (l2.length>0) l2=l2+", ";
				l2=l2+fields[l2s[l2l]*1];
			}

			ret = toPC(l1)+ "(" +ly.description+ ")" +toPC(l2);
		}
	}
	return ret;
}