function init() {
	document.getElementById('hmnow').value  = 0;
}

// the application path is stored in the javascript variable : contextPath

// console.log("DEBUG : main js : contextPath = " + contextPath);


// Variable for holding the file list.
var fileList = [];


// Send the file URL or the text from the text area where users can paste an SBML file.
function submitForm(){

	console.log( "file_upload:submitForm called !!" );
	const fileListStr = fileList.toString();
	console.log( "fileList for ajax query: " + fileListStr);
	
	// Making the Ajax call to send url or copy/paste model and launch the conversion jobs
	$.ajax({
		// The URL for the request
		url: "launchjobs",
		// The data to send (will be converted to a query string)
		data: {
			sessionId:  document.getElementById('sessionId').value,
			inputModelType: encodeURIComponent(document.getElementById('input').value),
			converterType: encodeURIComponent(document.getElementById('select_convert').value),
			url_upload: encodeURIComponent(document.getElementById('url_upload').value),
			text_upload: encodeURIComponent(document.getElementById('text_upload').value),
			files: fileListStr
		},
		// Set to false if the request should be sent synchronously.
		async: true,
		// Whether this is a POST or GET request
		type: "POST",
		// The type of data we expect back
		dataType : "html",
		// Code to run if the request succeeds;
		// the response is passed to the function
		done: function(  ) {
			console.log( "The launchjobs request is done successfully!" );
		},
		// Code to run if the request fails; the raw request and
		// status codes are passed to the function
		fail: function( xhr, status, errorThrown ) {
			console.log( "Sorry, there was a problem!" );
			console.log( "Error: " + errorThrown );
			console.log( "Status: " + status );
			console.dir( xhr );
		},
		// Code to run regardless of success or failure
		always: function( xhr, status ) {
			console.log("launchjobs always called");
		},
		success: function(data) {
			console.log("DATA: " + data);
			const json = JSON.parse(data);
			redirectToResults(json["sessionId"]);
		}
	});
}

function redirectToResults(sessionId){
	
	// redirecting to the result page
	const resultURL = contextPath + "/results?sessionId=" + sessionId;
	// console.log("View the conversion results at: " + resultURL);
	document.location.href = resultURL;
    // reset the list of files and the table displaying it.
	fileList.length = 0;
	$("#uploaderContainer tr:has(td)").remove();   
}

/* It checks the form. It returns true if the form fields are not empty, false otherwise. */
function checkForm() {
	console.log("DEBUG : Step 1 : document.getElementById('input').value : " + document.getElementById('input').value);	
	if(document.getElementById('input').value == "" || document.getElementById('input').value == "not_selected") { 
		alert("Error: you must specify your input file format. See Step 1.");		
		return false;
	}
	console.log("DEBUG : Step 2 : document.getElementById('select_convert').value : " + document.getElementById('select_convert').value);	
	if(document.getElementById('select_convert').value == "" || document.getElementById('select_convert').value == "not_selected") { 
		alert("Error: you must specify your output file format. See Step 2.");
		return false;
	}	
	console.log("DEBUG : Step 4a : fileList.toString() : " + fileList.toString());
	console.log("DEBUG : Step 4b : document.getElementById('url_upload').value : " + document.getElementById('url_upload').value);
	console.log("DEBUG : Step 4c : document.getElementById('text_upload').value : " + document.getElementById('text_upload').value);	
	if (fileList.toString() == "" &&
	   (document.getElementById('url_upload').value == "" || document.getElementById('url_upload').value == "Your URL here") && 
	   (document.getElementById('text_upload').value == "" || document.getElementById('text_upload').value == "Your Model here")) {
		alert("Error: you must upload 1 file at least. See Step 4."); 
		return false;
	}
	return true;
}



// Uploads the files.
function upload() {
	console.log("DEBUG : upload : fileList : " + fileList);
	if (checkForm()) {
		submitForm();
	}
}

// http://www.ebi.ac.uk/biomodels-main/download?mid=BIOMD0000000461

function resetForm($form) {
    $form.find('input:text, input:password, input:file, select, textarea').val('');
    $form.find('input:radio, input:checkbox')
         .removeAttr('checked').removeAttr('selected');
}