// Slightly modified jQuery plugin taken from http://www.dyve.net/jquery/?autocomplete
$.noConflict();
jQuery.indexedsearchAutocomplete = function(input, options) {
    // Create a link to self
    var me = this;

    // Create jQuery object for input element
    var $input = jQuery(input).attr("autocomplete", "off");

    // Apply inputClass if necessary
    if (options.inputClass) $input.addClass(options.inputClass);

    // Create results
    var results = document.createElement("div");
    // Create jQuery object for results
    var $results = jQuery(results);
    // Set default values for results
    var pos = findPos(input);

    options.mustMatch = options.mustMatch || 0;

    $results.hide().addClass(options.resultsClass).css({
        position: "absolute",
        top: (pos.y + input.offsetHeight) + "px",
        left: pos.x + "px"
    });
	
    // Lets see if we can find it
    var readWidth = parseInt(jQuery("input[name='tx_indexedsearch[sword]']").get(0).clientWidth);

    if(readWidth > 0) {
        $results.css({
            width: readWidth + "px"
        });
    }
	
    // Add to body element
    jQuery("body").append(results);

    input.autocompleter = me;
    input.lastSelected = $input.val();

    var timeout = null;
    var prev = "";
    var active = -1;
    var cache = {};
    var keyb = false;

    $input
    .keydown(function(e) {
        switch(e.keyCode) {
            case 38: // up
                e.preventDefault();
                moveSelect(-1);
                break;
            case 40: // down
                e.preventDefault();
                moveSelect(1);
                break;
            case 9:  // tab
            case 13: // return
                if (selectCurrent()) {
                    e.preventDefault();
                }
                break;
            default:
                active = -1;
                if (timeout) clearTimeout(timeout);
                timeout = setTimeout(onChange, options.delay);
                break;
        }
    })
    .blur(function() {
        hideResults();
    });

    hideResultsNow();

    function onChange() {
        var v = $input.val();
        if (v == prev) return;
        prev = v;
        if(jQuery.browser.msie && jQuery.browser.version < 7){
            return false;
        }
        if (v.length >= options.minChars) {
            $input.addClass(options.loadingClass);
            requestData(v);
        } else {
            $input.removeClass(options.loadingClass);
            $results.hide();
        }
    };

    function moveSelect(step) {

        var lis = jQuery("li", results);
        if (!lis) return;

        active += step;

        if (active < 0) {
            active = 0;
        } else if (active >= lis.size()) {
            active = lis.size() - 1;
        }

        lis.removeClass("over");

        jQuery(lis[active]).addClass("over");

    // Weird behaviour in IE
    // if (lis[active] && lis[active].scrollIntoView) {
    // 	lis[active].scrollIntoView(false);
    // }

    };

    function selectCurrent() {
        var li = jQuery("li.over", results)[0];
        if (!li) {
            var $li = jQuery("li", results);
            if (options.selectOnly) {
                if ($li.length == 1) li = $li[0];
            } else if (options.selectFirst) {
                li = $li[0];
            }
        }
        if (li) {
            selectItem(li);
            return true;
        } else {
            return false;
        }
    };

    function selectItem(li) {
        if (!li) {
            li = document.createElement("li");
            li.extra = [];
            li.selectValue = "";
        }
        var v = jQuery.trim(li.selectValue ? li.selectValue : li.innerHTML);
        input.lastSelected = v;
        prev = v;
        $results.html("");
        $input.val(v);
        hideResultsNow();
        setTimeout(function() {
            onItemSelect(li)
            }, 1);
    };

    function hideResults() {
        if (timeout) clearTimeout(timeout);
        timeout = setTimeout(hideResultsNow, 200);
    };

    function hideResultsNow() {
        if (timeout) clearTimeout(timeout);
        $input.removeClass(options.loadingClass);
        if ($results.is(":visible")) {
            $results.hide();
        }
        if (options.mustMatch) {
            var v = $input.val();
            if (v != input.lastSelected) {
                selectItem(null);
            }
        }
    };

    function receiveData(q, data) {
        if (data) {
            $input.removeClass(options.loadingClass);
            results.innerHTML = "";
            var resultList = dataToDom(data, q);
            results.appendChild(resultList);
            if (options.extensionConfig.autoResize)
            {
                resetSize(resultList);
            }
            $results.show();
        } else {
            hideResultsNow();
        }
    };

    function parseData(data) {
        if (!data) return null;
        var parsed = [];
        var rows = data.split(options.lineSeparator);
        for (var i=0; i < rows.length; i++) {
            var row = jQuery.trim(rows[i]);
            if (row) {
                parsed[parsed.length] = row.split(options.cellSeparator);
            }
        }
        return parsed;
    };

    function dataToDom(data, q) {
        var listContainer = document.createElement('div');
        var listHeadline = document.createElement('h5');
        listHeadline.innerHTML = options.extensionConfig.resultListHeadline + '&hellip;';

        var ul = document.createElement("ul");
        var num = data.length;

        data.sort(function(a,b) {
            return parseInt(b[0]) - parseInt(a[0]);
        });

        for (var i=0; i < num; i++) {
            var row = data[i];
            if (!row) continue;

            if (i >= options.extensionConfig.maxResults)
            {
                i = num;
                break;
            }

//            var page = document.createElement('span');
//            page.innerHTML = row[1];
            var li = document.createElement("li");
            li.title = row[0];
            li.innerHTML = li.title;
            var words = q.split(' ');
//            console.log(words.length);
            for(j = 0; j < words.length; j++){
                if(words[j].length >= 3){
                    var regex = new RegExp('(' + words[j]+ ')',"gi");
                    li.innerHTML = li.innerHTML.replace(regex, '<strong>$1</strong>');
                }
            }
//            li.appendChild(page);
            li.selectValue = row[0].replace(/ ?\&hellip\; ?/,' ');
            var extra = null;
            if (row.length > 1) {
                extra = [];
                for (var j=1; j < row.length; j++) {
                    extra.push(row[j]);
                }
            }
            li.extra = extra;
            ul.appendChild(li);

            jQuery(li).addClass(i%2 === 0 ? 'even' : 'odd');
            jQuery(li).hover(
                function() {
                    jQuery("li", ul).removeClass("over");
                    jQuery(this).addClass("over");
                },
                function() {
                    jQuery(this).removeClass("over");
                }
                ).click(function(e) {
                e.preventDefault();
                e.stopPropagation();
                selectItem(this)
                });
        }

        listContainer.appendChild(listHeadline);
        listContainer.appendChild(ul);
        return listContainer;
    };

    function resetSize(ul)
    {
        var tempList = ul.cloneNode(true);
        jQuery(tempList).css('display', 'none');
        jQuery("body").get(0).appendChild(tempList);
        var widthNeeded = jQuery(tempList).width();
        jQuery("body").get(0).removeChild(tempList);
        jQuery(ul).width(widthNeeded);
        $results.width(widthNeeded);
    }

    function requestData(q) {
        if (!options.matchCase) q = q.toLowerCase();
        var data = options.cacheLength ? loadFromCache(q) : null;
        if (data) {
            receiveData(q, data);
        } else {
            jQuery.get(makeUrl(q), function(data) {
                data = parseData(data)
                addToCache(q, data);
                receiveData(q, data);
            });
        }
    };

    function makeUrl(q) {
        var url = options.url + "&sw=" + q;
        for (var i in options.extraParams) {
            url += "&" + i + "=" + options.extraParams[i];
        }
        return url;
    };

    function loadFromCache(q) {
        if (!q) return null;
        if (cache[q]) return cache[q];
        //        if (options.matchSubset) {
        //			for (var i = q.length - 1; i >= options.minChars; i--) {
        //				var qs = q.substr(0, i);
        //				var c = cache[qs];
        //				if (c) {
        //					var csub = [];
        //					for (var j = 0; j < c.length; j++) {
        //						var x = c[j];
        //						var x0 = x[0];
        //						if (matchSubset(x0, q)) {
        //							csub[csub.length] = x;
        //						}
        //					}
        //					return csub;
        //				}
        //			}
        //		}
        return null;
    };

    function matchSubset(s, sub) {
        if (!options.matchCase) s = s.toLowerCase();
        var i = s.indexOf(sub);
        if (i == -1) return false;
        return i == 0 || options.matchContains;
    };

    this.flushCache = function() {
        cache = {};
    };

    this.setExtraParams = function(p) {
        options.extraParams = p;
    };

    function addToCache(q, data) {
        if (!data || !q || !options.cacheLength) return;
        if (!cache.length || cache.length > options.cacheLength) {
            cache = {};
            cache.length = 1; // we know we're adding something
        } else if (!cache[q]) {
            cache.length++;
        }
        cache[q] = data;
    };

    function findPos(obj) {
        var curleft = obj.offsetLeft || 0;
        var curtop = obj.offsetTop || 0;
        while (obj = obj.offsetParent) {
            curleft += obj.offsetLeft
            curtop += obj.offsetTop
        }
        return {
            x:curleft,
            y:curtop
        };
    }

    function onItemSelect(li) {
        var thefield = $input;
        var theForm = thefield.parent();
        var i = 0;
		
        // Find the parent form, if not buried too deeply
        while(!theForm.is('FORM') && i < 20) {
            theForm = theForm.parent();
            i++;
        }
	
        if(theForm.is('FORM')) {
            if (options.extensionConfig.autoSubmit)
            {
                jQuery(theForm).get(0).submit();
            }
        }
    }

//	function formatItem(row) {
////		var label = parseInt(row[1]) == 1 ? options.extensionConfig.altResultLabel : options.extensionConfig.altResultsLabel;
//		return row[0] + ' <span class="page">' + row[1] + '</span>';
//	}
}

jQuery.fn.indexedsearchAutocomplete = function(url, options) {
    // Make sure options exists
    options = options || {};
    // Set url as option
    options.url = url;
    // Set default values for required options
    options.inputClass = options.inputClass || "ac_input";
    options.resultsClass = options.resultsClass || "ac_results";
    options.lineSeparator = options.lineSeparator || "\n";
    options.cellSeparator = options.cellSeparator || "|";
    options.minChars = options.minChars || 1;
    options.delay = options.delay || 400;
    options.matchCase = options.matchCase || 0;
    options.matchSubset = options.matchSubset || 1;
    options.matchContains = options.matchContains || 0;
    options.cacheLength = options.cacheLength || 1;
    options.mustMatch = options.mustMatch || 0;
    options.extraParams = options.extraParams || {};
    options.loadingClass = options.loadingClass || "ac_loading";
    options.selectFirst = options.selectFirst || false;
    options.selectOnly = options.selectOnly || false;
    options.extensionConfig = typeof dw_indexsearch_autocomplete !== 'undefined' && typeof dw_indexsearch_autocomplete === 'object' ? dw_indexsearch_autocomplete : {};
    options.extensionConfig.altResultLabel = 'altResultLabel' in options.extensionConfig ? options.extensionConfig.altResultLabel : 'result';
    options.extensionConfig.altResultsLabel = 'altResultsLabel' in options.extensionConfig ? options.extensionConfig.altResultsLabel : 'results';
    options.extensionConfig.resultListHeadline = 'altResultsLabel' in options.extensionConfig ? options.extensionConfig.resultListHeadline : 'Suggestions';
    options.extensionConfig.autoSubmit = 'autoSubmit' in options.extensionConfig ? options.extensionConfig.autoSubmit : false;
    options.extensionConfig.maxResults = 'maxResults' in options.extensionConfig ? options.extensionConfig.maxResults : 2147483647;
    options.extensionConfig.autoResize = 'autoResize' in options.extensionConfig ? options.extensionConfig.autoResize : false;

    this.each(function() {
        var input = this;
        new jQuery.indexedsearchAutocomplete(input, options);
    });

    // Don't break the chain
    return this;
}

jQuery(document).ready(function() {
    jQuery("input[name='tx_indexedsearch[sword]']").indexedsearchAutocomplete("http://" + top.location.host + top.location.pathname + "?eID=dw_indexedsearch_autocomplete&sr=" + sr + "&sh=" + sh + "", {
        minChars:3,
        matchSubset:false,
        matchContains:1,
        cacheLength:10,
        selectOnly:1
    });
    jQuery("input[alt='default']").focus(function(){
        defaultTxt = $(this).val();
        $(this).attr('value','');
    });
    jQuery("input[alt='default']").blur(function(){
        if($(this).val() == ''){
            $(this).val(defaultTxt);
        }
    })
    var defaultTxt = '';
});