gistfile1.js

function response_ok(x) {
	return x >= 200 && x < 300;
};

function getUsername()
{
    var username = doLMSGetValue( "cmi.core.student_id");
    console.log(username);
    console.log(doLMSGetValue( "cmi.core.student_name"));
    return username;
};

function printToSTD(text)
{
    console.dir(text);
    console.log(text);
    return text.replace(/(\r\n|\n|\r)/gm, "<br>");
}

function format_score_table(data) 
{
    $("#SCORETABLE").html("");
    $("#SCORETABLE").append("<table><tbody></tbody></table>");
    for (i=0;i<data.length;i++){
        row = data[i];
        if (row.score != row.full_score ){
            $("#SCORETABLE > table > tbody").append(
                          "<tr class=\"failrow\"></tr>");
        } else {
            $("#SCORETABLE > table > tbody").append(
                       "<tr class=\"successrow\"></tr>");
        };
        if(row.name != "Total Score"){
        $("#SCORETABLE > table > tbody > tr").filter(":last").append(
                                             "<td> Test "+i+"</td>"+
                                           "<td> "+row.message+" </td>"+
                                            "<td> "+row.name+" </td>" +
                                     "<td> "+row.description+" </td>" +
                          "<td> <pre> " + row.error_text+" </pre> </td>");
                                             
        } else {
        $("#SCORETABLE > table > tbody > tr").filter(":last").append(
       "<td></td><td></td><td>"+ row.name+ "</td><td></td><td></td>");
        }
        $("#SCORETABLE > table > tbody > tr").filter(":last").append(               
               "<td> "+ row.score+ " out of "+ row.full_score + "</td>");

    };

};

function format_file_table(data){
    $("#gallery").html("");
    var html_str = "";
    for (i=0;i<data.length;i++){
        console.log('looping');
        console.log(data[i]);
        //var remain = data[i].file_loc.substr(data[i].file_loc.substr(10).indexOf("/") + 11);
	//var file_loc = 'https://' + remain;

	/* e.g. https://192.168.1.198/aurum/.../
		url is the full url
		path contains "/aurum"
		hostname comes from config.js

		``path`` is extracted by learning that / have to occur multiple times,
		and ``path`` is the first / occurs after the first dot.
		method ``substr`` finds the first occurence of the first input parameter,
		starting the search at position given by the optional second parameter.
	*/
	var url = data[i].file_loc;
	var path = url.substr(url.indexOf("/", url.indexOf(".")))
	var file_loc = hostname + path;
	//var file_loc = data[i].file_loc.replace('http', 'https');
        html_str += "<img src=\""+file_loc+"\"";
        html_str += "alt=\""+data[i].orig_name+"\"/>";
    };
    $("#gallery").append(html_str);
	$("#gallery").galleria({
                  width:500,
                  height:500});
}

var totalScore = 0;
var rawScore = 0;
var actualScore = 0;
var question0;
var question1;
var key0 = 0;
var key1 = 0;
var score_data = null;

function initialize_problem_cmi(num,prob_id){
    doLMSSetValue("cmi.interactions."+num+".id",prob_id);
    doLMSSetValue("cmi.interactions."+num+".type","numeric");
    doLMSSetValue("cmi.interactions."+num+".correct_responses.0.pattern", "0");    
};


function calcRawScore(data){
    var totalScore = 0;
    var rawScore = 0;
    var row;
    for (i=0;i<data.length;i++) {
        row = data[i];
        prob_id = "key"+i+"b8";
        initialize_problem_cmi(i,prob_id);
        doLMSSetValue("cmi.interactions."+i+".student_response",row.score+"");
        if (row.score == row.full_score) {
            doLMSSetValue("cmi.interactions."+i+".result","correct");     
        } else {
            doLMSSetValue("cmi.interactions."+i+".result","wrong");     
        }
        if (i != data.length-1)
            rawScore=rawScore+parseInt(row.score);
        //totalScore=totalScore+row.full_score;        
    };
    totalScore = row.full_score;
    return [rawScore,totalScore];
};

function calcScore2(data, finished)
{
    computeTime();  // the student has stopped here.
    result = calcRawScore(data);
    rawScore = result[0];
    totalScore = result[1];
    actualScore = Math.round((rawScore / totalScore) * 100); // normalize to 100%
    //doLMSSetValue("cmi.core.score.max", maxScore.toString());
    doLMSSetValue( "cmi.core.score.raw", actualScore.toString() );
    	if ( rawScore < min_passing_score )
        {
        	doLMSSetValue( "cmi.core.lesson_status", "failed" );
        }
        else 
        {
        	doLMSSetValue( "cmi.core.lesson_status", "passed" );
        }
    exitPageStatus = true;
    doLMSCommit();
    if (finished == true) {
	 if (rawScore < min_passing_score) {
             doLMSSetValue( "cmi.core.exit", "suspend" ); }
         else { doLMSSetValue( "cmi.core.exit", "logout" ); }
         doLMSFinish();
    }
}; 

function get_user_previous_soln(student_id, problem_id, shared_key)
{    	console.log('get user previous code.');
    	xhr.request({
		url: ["/aurum/solution", student_id, problem_id, shared_key].join("/"),
		method: "GET",
		data: {}
	}, function(response) {
		myCodeMirror.setValue(jQuery.parseJSON(response.data).code);
		myCodeMirror.setOption("readOnly",false);
		$("#RunButton").removeAttr("disabled");
	}, function(response) {
		myCodeMirror.setValue("");
		myCodeMirror.setOption("readOnly",false);
		$("#RunButton").removeAttr("disabled");
		ajaxLoader('error');
	});
};

function loadResult(data, flag, finished)
{
	score_data = data;
        console.dir(data.stdout);
        console.dir(data.stderr);
    	$("#STDOUT").html("<pre>"+printToSTD(data.stdout.test_stdout)+"</pre>");
    	$("#STDERR").html("<pre>"+printToSTD(data.stdout.test_stderr)+"</pre>");
    	if(data.file_table.length>0){
            console.log('here inside calling file table.');
		format_file_table(data.file_table);
    	};
    	if(data.score_table.length>0){
      		format_score_table(data.score_table);
		$("#SubmitGrade").removeAttr("disabled");
    	};
	$('table').css('border','3px');
	$('.successrow > td').css('background-color','#CCFF99');
	$('.failrow > td').css('background-color','#FFCCFF');
	if (score_data === null || flag == false){
		console.log('nothing...');
	} else if (flag == true) {
		calcScore2(score_data.score_table, finished);
	};
};

function get_user_previous_result(student_id, problem_id, shared_key)
{
    	console.log('get user previous result');
    	console.log(access_code);
    
    	xhr.request({
		url: ["/aurum/result", student_id, problem_id].join("/"),
		method: "GET",
		data: {}
	}, function(response) {
		loadResult(jQuery.parseJSON(response.data), false);
	}, function(response) {
		console.log("failed to get previous result");
		ajaxLoader('error');
	});
};


function reqErrorHandler(jqXHR, textStatus, errorThrown){
    console.log('Request was aborted.')
    console.log(jqXHR.responseText);
    $('#STDERR').html(jqXHR.responseText);   
}

function clearBoard(shared_key){
    $("#SCORETABLE").html("");
    $("#STDOUT").html("");
    $("#STDERR").html("");
    $("#gallery").html("");
    // now fire off PUT solution code
    ajaxLoader('on');
    putLatestSolnCode(shared_key);
};

function ajaxLoader(x){
    if (x == 'on') {
	$("#ajaxloader").show();
	$("#ajaxloader").html('<center><img src="css/loader.gif" /> <br/> <p>Running....</p></center>');
	$("#RunButton").attr("disabled", "disabled");
	$("#SubmitGrade").attr("disabled", "disabled");
   } else if (x == 'off') {
	$("#ajaxloader").html('');
	$("#ajaxloader").hide();
	$("#RunButton").removeAttr("disabled");
	$("#SubmitGrade").removeAttr("disabled");
   } else if (x == 'error') {
	$("#ajaxloader").html('');
	$("#ajaxloader").hide();
	$("#RunButton").removeAttr("disabled");
   }
};

function putLatestSolnCode(shared_key){
    	student_id = getUsername();
	xhr.request({
		url: ["/aurum/solution", student_id, problem_id, shared_key].join("/"),
		method: "POST",
		data: { src_code: myCodeMirror.getValue() }
	}, function(response) {
		postCreateResult(response, shared_key);
	}, function(response) {
		console.log("Error putting code");
		console.log(xhr.request);
		console.log(response.json);
		ajaxLoader('error');
		$("#STDERR").html('<p><span style="color:red">We tried saving your code, but something has gone wrong. Try again. If not, contact support.</span></p><br/>');
	});   
};

function getGenerateResult(shared_key){
	xhr.request({
		url: ["/aurum/report", shared_key].join("/"),
		method: "GET",
		data: {}
	}, function(response) {
		status = response.status;
		json = jQuery.parseJSON(response.data);
		if ( response_ok(status) ) {
			loadResult(json.report, true, false);
			ajaxLoader('off');
		} else {
			console.log("response is not 2xx");
			console.log(json);
			console.log(status);
			ajaxLoader('error');
			$("#STDERR").html('<p><span style="color:red">Unable to get back your result. Try again. If not, contact support.</span></p><br/>');
		}
	}, function(response) {
		console.log("So close..");
		console.log(response.json);
		ajaxLoader('error');
		$("#STDERR").html('<p><span style="color:red">We tried getting result back, but something has gone wrong. Try again. If not, contact support.</span></p><br/>');
	});
};

function pollForRunStatus(shared_key){
	xhr.request({
		url: ["/aurum/status/run", shared_key].join("/"),
		method: "GET",
		data: {}
	}, function(response) {
		status = response.status;
		json = jQuery.parseJSON(response.data);
		if ( response_ok(status) ) {
			if (json.status == 'Complete') {
				getGenerateResult(shared_key);
			} else if (json.status == 'Running') {
				setTimeout(function(){pollForRunStatus(shared_key);}, 5000);
			} else {
				$("#STDERR").html(printToSTD(json.error.stderr));
				$("#STDOUT").html(printToSTD(json.error.stdout));
				ajaxLoader('error');
			}
		} else {
			$("#STDERR").html('<p><span style="color:red">Timeout</span></p><br/>');
			console.log("response is not 2xx")
			ajaxLoader('error');
		}
	}, function(response) {
		console.log("EegaD");
		console.log(response.json);
		ajaxLoader('error');
		$("#STDERR").html('<p><span style="color:red">We tried running the code, but something has gone wrong. Try again. If not, contact support.</span></p><br/>');
	});
};

function pollForBuildStatus(shared_key){
	xhr.request({
		url: ["/aurum/status/build", shared_key].join("/"),
		method: "GET",
		data: {}
	}, function(response) {
		status = response.status;
		json = jQuery.parseJSON(response.data);
		if ( response_ok(status) ) {
			if (json.status == 'Complete') {
				pollForRunStatus(shared_key);
			} else if (json.status == 'Running') {
				setTimeout(function(){pollForBuildStatus(shared_key);}, 3000);
			} else if (json.status == 'Error') {
				$("#STDERR").html('<p><span style="color:red"><strong>Compile Error</strong></span></p><br/>' + printToSTD(json.error.stderr));
				$("#STDOUT").html(printToSTD(json.error.stdout));
				console.log("build stderr");
				console.log(json.error.stderr);
				ajaxLoader('error');
			}
		} else {
			$("#STDERR").html('<p><span style="color:red">Timeout</span></p><br/>');
			console.log("response is not 2xx")
			ajaxLoader('error');
		}
	}, function(response) {
		console.log("Error!");
		console.log(response.json);
		console.log(response.status);
		ajaxLoader('error');
		$("#STDERR").html('<p><span style="color:red">We tried building your solution, but something has gone wrong. Try again. If not, contact support.</span></p><br/>');
	});
};

function postCreateResult(data, shared_key){
	xhr.request({
		url: ["/aurum/result", student_id, problem_id, shared_key].join("/"),
		method: "POST",
		data: {}
	}, function(response) {
		status = response.status;
		if ( response_ok(status) ) {
			pollForBuildStatus(shared_key);
		} else {
			console.log("response is not 2xx")
			ajaxLoader('error');
			$('#STDERR').html('<p><span style="color:red">Cannot create a result.</span> Try again. If not, contact support.</p>');
		}
	}, function(response) {
		console.log("Build error!");
		console.log(response);
		ajaxLoader('error');
		$('#STDERR').html('<p><span style="color:red">We tried creating solution, but something has gone wrong. Try again. If not, contact support.</span></p>');
	});
};

var ajax_msg = ""

var xhr = new easyXDM.Rpc({ remote: url }, { remote: { request: {} } });

var ged_main = function (host, problem_id, shared_key) {
    //ajaxLoader('off');
    console.log("Initializing");
    if (LMSIsInitialized() === true)
    {
        student_id = getUsername(); // student_id is student_name
        // invoke two ajax calls asyncly
        get_user_previous_soln(student_id, problem_id, shared_key);
        get_user_previous_result(student_id, problem_id, shared_key);
        //doLMSSetValue("cmi.core.lesson_status", "incomplete");
  	//doLMSCommit();
        $("#RunButton").click(function (){
			clearBoard(shared_key);
		});

		$("#SubmitGrade").click(function () {
		if (score_data===null){
			alert("You need to run the tests first.");
		} else {
			calcScore2(score_data.score_table, true);
			myCodeMirror.setOption("readOnly","nocursor");
			$("#RunButton").remove();
			$("#SubmitGrade").remove();
		}
		});

         
    } else {
        setTimeout(function() {ged_main(url, problem_id, shared_key);}, 50);
    };
    
};