var req;

function loadXMLDoc(url)
{
    // branch for native XMLHttpRequest object
    if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
        req.onreadystatechange = processReqChange;
        req.open("GET", url, true);
        req.send(null);
    // branch for IE/Windows ActiveX version
    } else if (window.ActiveXObject) {
        req = new ActiveXObject("Microsoft.XMLHTTP");
        if (req) {
            req.onreadystatechange = processReqChange;
            req.open("GET", url, true);
            req.send();
        }
     }
}

function processReqChange()
{
    // only if req shows "complete"
    if (req.readyState == 4) {
        // only if "OK"
        if (req.status == 200 && req.responseXML != null && typeof req.responseXML != 'undefined') {
            response  = req.responseXML.documentElement;
            issues    = response.getElementsByTagName('issue');
            // this is an issue request
            issueSelect = document.getElementById('submittalname');



            // clear
            while (issueSelect.options.length > 0) {
              issueSelect.options[0] = null;
            }

            issueSelect.options[issueSelect.options.length]=new Option("","");

            issuesLength =   issues.length;

            // add
            for (i = 0; i < issues.length; i++) {
              var nm = issues[i].getAttribute('issuename');
              var status = issues[i].getAttribute('status');
              issueSelect.options[issueSelect.options.length]=new Option(nm+" ("+status+")",nm);
            }

            // add handling for resubmitted content that we don't have our system
            issueSelect.options[issueSelect.options.length]=new Option(resubmittalUnknownCode, resubmittalUnknownCode );


            if (issuesLength == 0) {
                document.getElementById("submittalnamespan").className = "hidden";
                document.getElementById("submittalnamespan2").className = "show";
            } else {
                document.getElementById("submittalnamespan").className = "show";
                document.getElementById("submittalnamespan2").className = "hidden";
            }
            document.getElementById("supplementnamespan").className = "hidden";                        

        } else {
            alert("There was a problem retrieving the XML data.\n" + "Please fill Publisher, Journal and Year information :\n" + req.statusText);
        }
    }
}

function makeIssueRequestURL()
{
	var fullurl= window.location.href;
	var subUrlIndex1 =  fullurl.indexOf("//");
 	var subUrlIndex2 = fullurl.indexOf("/", subUrlIndex1+2);
 	var urlString = fullurl.substring(0, subUrlIndex2);
	urlString = urlString + "/jowweb/controller?action=getissuesbyshortcode&shortcode=";
	return urlString;
}

function getIssues(shortcode,year)
{	
	var url = makeIssueRequestURL();
    url =  url + shortcode+'&year='+year;
 	loadXMLDoc(url);
}

function submittalClicked(fm) {
  if (fm.submittal.checked) {
    getIssues(fm.shortcode.value, fm.year.value);
    fm.supplement.checked = false;
  }
  return true;
}

function supplementClicked(fm) {
  if (fm.supplement.checked) {
    document.getElementById("supplementnamespan").className = "show";
    document.getElementById("submittalnamespan2").className = "hidden";
    document.getElementById("submittalnamespan").className = "hidden";
    fm.submittal.checked = false;
  }
  return true;
}

function journalAndYearSelected(fm) {
  if (fm.shortcode.value != "" && validateYear(fm.year.value) ) {
    document.getElementById("supplement").disabled = false;
    document.getElementById("submittal").disabled = false;
  } else {
    document.getElementById("supplement").disabled = true;
    document.getElementById("submittal").disabled = true;
  }
  return true;
}


function disableSubmittal(fm) {
    document.getElementById("supplementnamespan").className = "hidden";
    document.getElementById("submittalnamespan").className = "hidden";
    document.getElementById("submittalnamespan2").className = "hidden";
    document.getElementById("supplement").checked = false;
    document.getElementById("submittal").checked = false;
    document.getElementById("supplement").disabled = true;
    document.getElementById("submittal").disabled = true;
    return true;
}



// this is the name of the option that ips should choose when they are submitting an issue not in documentum.
//var resubmittalUnknownCode = "PREVIOUS (in Orion)";
   var resubmittalUnknownCode = "New Submittal";
   var issuesLength = 0;

function submittalSelected(fm) {
  if (fm.submittalname.value == resubmittalUnknownCode) {
     document.getElementById("submittalnamespan2").className = "show";
  } else {
    document.getElementById("submittalnamespan2").className = "hidden";
  }
  return true;
}

function validateForm(fm,ispap) {

  if (fm.shortcode.value == "") {
    alert("Please select a journal.");
    return false;
  }

  if (! validateYear(fm.year.value)) {
    alert("Please enter a valid four digit year.");
    return false;
  }

  if (ispap == "PAP") {
    if (fm.year.value != "9000") {
      alert("For PAP issue, please enter 9000 as the year.");
      return false;
    }
  }
  else {
    if (fm.year.value == "9000") {
      alert("For live issue, please enter the issue's year.");
      return false;
    }
  }

  if (fm.file.value == "") {
    alert("Please select a file.");
    return false;
  }

  issuename = "";
  if (fm.supplement.checked) {
    issuename = fm.supplementname.value;
  } else if (fm.submittal.checked) {
    issuename = fm.submittalname.value;
    if (issuename == resubmittalUnknownCode) {
       issuename = fm.freeformresubmittal.value;
       fm.manuallyEntered.value = true;
    } else  if (issuename == "") {
       issuename = fm.freeformresubmittal.value;
       fm.manuallyEntered.value = true;
    } else {
       fm.manuallyEntered.value = false;
    }

  }
  if (issuename != "") {
    val = validateIssueName(issuename);
    if (!val) {
       alert("Please enter a valid issue name (########.#)");
       return false;
    }
  } else {
    alert("Please select an issue name.");
    return false;
  }

  issueNameYear =  issuename.substring(0, 4);

  if (ispap == "PAP") {
      if ( issueNameYear != "9000") {
          alert("The year does not match the issuename.");
          return false;
      }
  } else {
      if ( fm.year.value != issueNameYear) {
          alert("The year does not match the issuename.");
          return false;
      }
  }

  var filename = fm.file.value;
  var zipparts = filename.match(/([A-Za-z]{3,8})(\d{4})(\d{2})(\d{2})\.(\d).zip$/im);

  if ( fm.year.value != zipparts[2] ) {
    alert("The year does not match the zip filename");
    return false;
  }

  return true;

}


function validateYear(str) {
  if (str == "" || ! validateNumber(str) || str.length != 4) {
	  return false;
  } else {
	  return true;
  }
}

function validateNumber(strNum) {
   return ! isNaN(parseInt(strNum));
}

function validateIssueName(strName) {
   if (strName.length <8 || strName.length > 11) {
       return false;
   }
   for(var j=0; j<strName.length; j++) {
       var let = strName.charAt(j);
       if (isNaN(parseInt(let)) && let != ".") {
           return false;
       }
   }
   return true;
}

var submitted = 0;
function LockButton (form,element) {
       if ( ! submitted ) {
           form.elements[element].disabled=true;
           submitted = 1;
           form.submit;
       }
       else { alert("Form already submitted, please be patient"); }
    }
//<input type="button" name="submitbutton" value="Test Button" onclick="LockButton(this.form,'submitbutton');" />