/*swiftype search */
var apiUrlTitle = "https://search-api.swiftype.com/api/v1/public/engines/search.json";
var engineKey = "pMxAEbPhCoGx5F_NENWd";
var maxPageSize = 10;
var currentPageNum = 1; 
var strkeyWord = "";
var resultQuery = "";
var resultTotalResultCnt = 0;
var resultPageNum = 0;

$(document).ready(function()
{ 
/* input string checking */  
      showWaiting();
      var qu = "qu";    
      strkeyWord = getQueryVariable(qu);
      $("#searchinput").val(strkeyWord);
      if (strkeyWord==null || strkeyWord=="") {
         stopWaiting()
         var description = "Enter keyword(s) to search for information on the ANZ website."
         $("#site-searchresultsum").html(description); 
      } else { 
         var o = "o";    
         var recordCountFind = getQueryVariable(o);
         if (recordCountFind==null || recordCountFind=="") {
            currentPageNum = 1;
         } else {
            var recordCnt = parseInt(recordCountFind, 10);
            currentPageNum = (recordCnt + 10)/10;
         }
         swiftypeSearch();
      };
});

function swiftypeSearch()
{
/* extract one page from swiftype engine API */
    var parameters = {
        q: strkeyWord, 
        engine_key: engineKey,
        per_page: maxPageSize,
        page: currentPageNum,
        filters: {"page": {"site-section": "unitedarabemirates"}} 
    };

    $.get(apiUrlTitle, parameters, function(data){onSearchCallback(data)})
    .fail(function (error) {
        stopWaiting()
        var description = "Error: Sorry, We're currently having problems with our site search. Please try again later."
        $("#site-searchresultsum").html(description); 
    })
};

function onSearchCallback (data)
{
    resultPageNum = data.info.page.num_pages; 
    resultTotalResultCnt = data.info.page.total_result_count;  
    resultQuery = data.info.page.query; 
    currentPageNum = data.info.page.current_page;
    var resultEachPageSize = data.record_count; 

/* remove loading image */
    stopWaiting()

    if (resultTotalResultCnt == 0 || currentPageNum > resultPageNum) {
       var description = "Sorry! No results matching '" + resultQuery + "' were found." + "<br />" + "Please refine your search, by reviewing/changing keywords and ensuring that you have not made any spelling errors.";
       $("#site-searchresultsum").html(description); 
    }  else {
       searchResultPageSum();
       searchResultPage(resultEachPageSize, data);   
       searchResultNav();  
    }
}             

function searchResultPageSum()
{
         if (resultTotalResultCnt == 1)  {
             var resultSummary = resultTotalResultCnt + " result";
             $("#site-searchresultsum").html(resultSummary); 
         } else {
             var resultSummary = resultTotalResultCnt + " results";
             $("#site-searchresultsum").html(resultSummary); 
         }
}

function searchResultPage(pageSize, data)
{
     if($("#searchresult").length>0) {
        $("#searchresult").remove();
     }
  
    var sr = document.createElement("div");
    sr.setAttribute("id", "searchresult"); 
    sr.className = "site-search_result";  
    $("#searchcontent").append(sr); 
  
    for(i=0; i<pageSize; i++) {
      var srd = document.createElement("div");
      srd.setAttribute("id", "searchresultdtl"); 
      srd.className = "site-search_resultdtl";
      $("#searchresult").append(srd);

      var header = document.createElement("h3");
      $(srd).append(header);  

      var title = document.createElement("a");
      var url = data.records.page[i].url;
      title.href = url;
     
      title.setAttribute("id", "title"); 
      title.className = "site-search_resulttitle";
      var titleString = data.records.page[i].title; 
      if (titleString == null || titleString == "") {
        titleString = "(Undefined)";
      } else { 
          var reTitleString = new RegExp(resultQuery, 'gi');     
          var titleString = titleString.replace(reTitleString, "<strong>$&</strong>");               
      }    
      title.innerHTML = titleString; 
      $(header).append(title)  

      var description = document.createElement("p");
      description.className = "site-search_resultdescription";
      description.setAttribute("id", "description"); 
      var bodyString = data.records.page[i].body;
      if (bodyString == null || bodyString == "") {
         bodyString = "";
      } else { 
          var reBodyString = new RegExp(resultQuery, 'gi');      
          var bodyString = bodyString.replace(reBodyString, "<strong>$&</strong>");               
      }  
      description.innerHTML = bodyString; 
      $(srd).append(description);  
 
      var url = document.createElement("cite");
      url.className = "site-search_resulturl";
      var urlDtl = document.createTextNode(data.records.page[i].url);
      url.appendChild(urlDtl);
      $(srd).append(url); 
    }
    wordlimit("site-search_resulttitle", 100); 
    wordlimit("site-search_resultdescription", 250); 
}

function searchResultNav()
{
         var nav = document.createElement("nav");
         nav.setAttribute("id", "navigation"); 
         nav.setAttribute("role", "navigation"); 
         nav.className = "site-search_resultnav";
         $("#searchresult").append(nav);

         var navUl = document.createElement("ul");
         navUl.className = "nav_ul";
         navUl.setAttribute("id", "navul");
         $(nav).append(navUl);

         var navButtonPre = document.createElement("li");
         navButtonPre.setAttribute("id", "navbuttonp");
         navButtonPre.className = "nav_li";
         if (currentPageNum == 1) {
            var previousButton = "<input id=\"previousbutton\" type=\"button\" value=\"Previous\" class=\"site-search_resultnav_previousbutton nav_button2 btn_disabled disabled\">";
         }  else {
            var previousButton = "<input id=\"previousbutton\" type=\"button\" value=\"Previous\" class=\"site-search_resultnav_previousbutton nav_button\" onclick=\"previousPage()\">";
         }
         $(navUl).append(navButtonPre); 
         $("#navbuttonp").html(previousButton);

         var navMain = document.createElement("li");
         navMain.setAttribute("id", "navmain"); 
         navMain.className = "site-search_resultnav_main nav_li"; 
         var navMainDtl = "Page " + currentPageNum + " of " + resultPageNum; 
         $(navUl).append(navMain); 
         $("#navmain").html(navMainDtl);

         var navButtonNext = document.createElement("li");
         navButtonNext.setAttribute("id", "navbuttonn");  
         navButtonNext.className = "nav_li";
         if (currentPageNum == resultPageNum) {
             var nextButton = "<input id=\"nextbutton\" type=\"button\" value=\"  Next  \" class=\"site-search_resultnav_nextbutton nav_button2 btn_disabled disabled\">";
         } else {
            var nextButton = "<input id=\"nextbutton\" type=\"button\" value=\"  Next  \" class=\"site-search_resultnav_nextbutton nav_button\" onclick=\"nextPage()\">";           
         }
         $(navUl).append(navButtonNext); 
         $("#navbuttonn").html(nextButton);
}

function onSearchContent()
{
     var resultSummary = " ";
     $("#site-searchresultsum").html(resultSummary);

     if($("#searchresult").length>0) {
        $("#searchresult").remove();
     }
     
     showWaiting();
     searchNewWord(); 
} 

function onKeywordEnter(event)
{
     var x = event.which || event.keyCode; 
     if (x == 13) { 
        var resultSummary = " ";
        $("#site-searchresultsum").html(resultSummary);

        if($("#searchresult").length>0) {
           $("#searchresult").remove();
        }

        showWaiting();
        searchNewWord();
     }
}    

function previousPage()
{
     var resultSummary = " ";
     $("#site-searchresultsum").html(resultSummary);

     if($("#searchresult").length>0) {
        $("#searchresult").remove();
     }
   
     currentPageNum = currentPageNum - 1;
     showWaiting();
     updateUrlCount();
     swiftypeSearch();    
}

function nextPage()
{
     var resultSummary = " ";
     $("#site-searchresultsum").html(resultSummary);

     if($("#searchresult").length>0) {
        $("#searchresult").remove();
     }

     currentPageNum = currentPageNum + 1; 
     showWaiting();
     updateUrlCount();
     swiftypeSearch();  
}

function searchNewWord()
{
    strkeyWord = $("#searchinput").val();
    var url = decodeURI(document.location.href); 
    var qu = "qu";
    var o = "o";
    var recordCountFind = 0;
    var newUrlKeyword = resetUrl(url, qu, strkeyWord);
    var newUrlCount = resetUrl(newUrlKeyword, o, recordCountFind);
    var newUrl = encodeURI(newUrlCount);
    var stateObject = {};
    var title = "update url";
    history.pushState(stateObject, title, newUrl);

    if (strkeyWord==null || strkeyWord=="") {
       stopWaiting();
       var description = "Enter keyword(s) to search for information on the ANZ website.";
       $("#site-searchresultsum").html(description); 
    } else {  
       currentPageNum = 1;
       swiftypeSearch(); 
    }
};

function updateUrlCount()
{
    url = decodeURI(document.location.href); 
    var recordCntStart = (currentPageNum - 1) * 10;
    var o = "o";
    var newUrl = resetUrl(url, o, recordCntStart);
    var newUrl = encodeURI(newUrl);
    var stateObject = {};
    var title = "update url";
    history.pushState(stateObject, title, newUrl);
};

function getQueryVariable(variable)
{
       var query = decodeURI(window.location.search.substring(1));
       var vars = query.split("&");
       var checkResult = "";

       for (var i=0;i<vars.length;i++) {
               var pair = vars[i].split("=");
               if(pair[0] == variable) {
                  checkResult = pair[1];
                  return checkResult;
               }
       }
       return checkResult; 
};

function resetUrl(url, name, value) {
        var splitIndex = url.indexOf("?") + 1;
        var paramStr = url.substr(splitIndex, url.length); 
        var newUrl = url.substr(0, splitIndex);
        var nameFound = false;


        var arr = paramStr.split('&');
    

        // - if exist , replace 
        for (var i = 0; i < arr.length; i++) {
            var kv = arr[i].split('=');
            if (kv[0] == name) {
                nameFound = true;
                newUrl += kv[0] + "=" + value;
            } else {
                if (kv[1] != undefined) {
                    newUrl += kv[0] + "=" + kv[1];
                }
            }
            if (i != arr.length - 1) {
                newUrl += "&";
            }
        }

        // - if new, add
        if (!nameFound) {
            newUrl += splitIndex == 0 ? "?" + name + "=" + value : "&" + name + "=" + value; 
        }
        return newUrl;
}

function wordlimit(cname, wordlength) 
{
    var cname = $("."+cname);
    for (var i = 0; i < cname.length; i++) {　　　　　　
        var nowLength = cname[i].innerHTML.length;
        if (nowLength > wordlength) {
            cname[i].innerHTML = cname[i].innerHTML.substr(0, wordlength) + '...';
        }　　　　　　
    }
    
}

function showWaiting()
{
     var loading = document.createElement("div");
     loading.setAttribute("id", "loading"); 
     loading.className = "loading";  
     $("#searchcontent").append(loading); 

     var img = document.createElement("div");
     img.setAttribute("id", "loadingimg"); 
     img.className = "loading_wait";  
     $(loading).append(img); 
}

function stopWaiting()
{
/* remove loading image*/
     if($("#loading").length>0) {
        $("#loading").remove();  
     }; 
}