);
},
+ getPaperByNumber: function(aid, number, callback)
+ {
+ db.assessments.findOne(
+ {
+ _id: aid,
+ "papers.number": number,
+ },
+ (err,a) => {
+ if (!!err || !a)
+ return callback(err,a);
+ for (let p of a.papers)
+ {
+ if (p.number == number)
+ return callback(null,p); //reached for sure
+ }
+ }
+ );
+ },
+
startSession: function(aid, number, password, callback)
{
// TODO: security, do not re-do tasks if already done
);
},
+
+ hasInput: function(aid, number, password, idx, cb)
+ {
+ db.assessments.findOne(
+ {
+ _id: aid,
+ "papers.number": number,
+ "papers.password": password,
+ },
+ (err,a) => {
+ if (!!err || !a)
+ return cb(err,a);
+ for (let p of a.papers)
+ {
+ for (let i of p.inputs)
+ {
+ if (i.index == idx)
+ return cb(null,true);
+ }
+ }
+ cb(null,false);
+ }
+ );
+ },
+
// https://stackoverflow.com/questions/27874469/mongodb-push-in-nested-array
setInput: function(aid, number, password, input, callback) //input: index + arrayOfInt (or txt)
{
},
// Set password in responses collection
- startSession: function(aid, number, cb)
+ startSession: function(aid, number, password, cb)
{
- const password = TokenGen.generate(12); //arbitrary number, 12 seems enough...
- AssessmentEntity.getQuestions(aid, (err,questions) => {
- AssessmentEntity.startSession(aid, number, password, (err2,ret) => {
- cb(err, {
- questions: questions,
- password: password,
+ AssessmentEntity.getPaperByNumber(aid, number, (err,paper) => {
+ if (!!err)
+ return cb(err,null);
+ if (!!paper)
+ {
+ if (!password)
+ return cb({errmsg:"Missing password"});
+ if (paper.password != password)
+ return cb({errmsg:"Wrong password"});
+ }
+ AssessmentEntity.getQuestions(aid, (err,questions) => {
+ if (!!err)
+ return cb(err,null);
+ if (!!paper)
+ return cb(null,{paper:paper,questions:questions});
+ AssessmentEntity.startSession(aid, number, password, (err2,ret) => {
+ const pwd = TokenGen.generate(12); //arbitrary number, 12 seems enough...
+ cb(err2, {
+ questions: questions,
+ password: pwd,
+ });
});
});
});
},
+ newAnswer: function(aid, number, password, input, cb)
+ {
+ console.log(JSON.stringify(input));
+ // Check that student hasn't already answered
+ AssessmentEntity.hasInput(aid, number, password, input.index, (err,ret) => {
+ if (!!err)
+ return cb(err,null);
+ if (!!ret)
+ return cb({errmsg:"Question already answered"},null);
+ AssessmentEntity.setInput(aid, number, password, input, (err2,ret2) => {
+ console.log(JSON.stringify(ret2));
+ if (!!err2 || !ret2)
+ return cb(err2,ret2);
+ return cb(null,ret2);
+ });
+ });
+ },
+
endSession: function(aid, number, password, cb)
{
AssessmentEntity.endAssessment(aid, number, password, (err,ret) => {
// NOTE: temporarily accept smartphone (security hole: pretend being a smartphone on desktop browser...)
if (navigator.userAgent.match(/(iPhone|iPod|iPad|Android|BlackBerry)/))
return true;
- return window.innerWidth == screen.width && window.innerHeight == screen.height;
+ // 3 is arbitrary, but a small tolerance is required (e.g. in Firefox)
+ return window.innerWidth >= screen.width-3 && window.innerHeight >= screen.height-3;
};
new Vue({
// 4: show answers
stage: assessment.mode != "open" ? 0 : 1,
remainingTime: 0, //global, in seconds
+ warnMsg: "",
},
components: {
"statements": {
props: ['assessment','inputs','student','stage'],
- data: function() {
- return {
- index: 0, //current question index in assessment.indices
- };
- },
// TODO: general render function for nested exercises
// TODO: with answer if stage==4 : class "wrong" if ticked AND stage==4 AND received answers
// class "right" if stage == 4 AND received answers (background-color: red / green)
// Full questions tree is rendered, but some parts hidden depending on display settings
render(h) {
let self = this;
- let questions = assessment.questions.map( (q,i) => {
+ let questions = (assessment.questions || [ ]).map( (q,i) => {
let questionContent = [ ];
questionContent.push(
h(
"input",
{
domProps: {
- checked: this.inputs[i][idx],
+ checked: this.inputs.length > 0 && this.inputs[i][idx],
},
attrs: {
id: this.inputId(i,idx),
{
"class": {
"question": true,
- "hide": this.stage == 2 && assessment.display == 'one' && assessment.indices[this.index] != i,
+ "hide": this.stage == 2 && assessment.display == 'one' && assessment.indices[assessment.index] != i,
},
},
questionContent
});
if (this.stage == 2)
{
- // TODO: one button per question
questions.unshift(
h(
"button",
"margin-right": "auto",
},
on: {
- click: () => this.sendAnswer(assessment.indices[this.index]),
+ click: () => this.sendAnswer(assessment.indices[assessment.index]),
},
},
"Send"
},
trySendCurrentAnswer: function() {
if (this.stage == 2)
- this.sendAnswer(assessment.indices[this.index]);
+ this.sendAnswer(assessment.indices[assessment.index]);
},
// stage 2
sendAnswer: function(realIndex) {
- if (this.index == assessment.questions.length - 1)
+ console.log(realIndex);
+ if (assessment.index == assessment.questions.length - 1)
this.$emit("gameover");
else
- this.index++;
+ assessment.index++;
+ this.$forceUpdate(); //TODO: shouldn't be required
if (assessment.mode == "open")
return; //only local
let answerData = {
dataType: "json",
success: ret => {
if (!!ret.errmsg)
- return alert(ret.errmsg);
+ return this.$emit("warning", ret.errmsg);
//socket.emit(message.newAnswer, answer);
},
});
return this.padWithZero(minutes) + ":" + this.padWithZero(seconds);
},
},
+ mounted: function() {
+ $(".modal").modal();
+ },
methods: {
+ // In case of AJAX errors
+ warning: function(message) {
+ this.warnMsg = message;
+ $("#warning").modal("open");
+ },
padWithZero: function(x) {
if (x < 10)
return "0" + x;
dataType: "json",
success: s => {
if (!!s.errmsg)
- return alert(s.errmsg);
+ return this.warning(s.errmsg);
this.stage = 1;
this.student = s.student;
Vue.nextTick( () => { Materialize.updateTextFields(); });
},
// stage 1 --> 2 (get all questions, set password)
startAssessment: function() {
- let initializeStage2 = questions => {
+ let initializeStage2 = (questions,paper) => {
$("#leftButton, #rightButton").hide();
if (assessment.time > 0)
{
- this.remainingTime = assessment.time * 60;
+ this.remainingTime = assessment.time * 60 - (!!paper ? paper.startTime/1000 : 0);
this.runTimer();
}
// Initialize structured answer(s) based on questions type and nesting (TODO: more general)
assessment.questions = questions;
for (let q of assessment.questions)
this.inputs.push( _(q.options.length).times( _.constant(false) ) );
- assessment.indices = assessment.fixed
- ? _.range(assessment.questions.length)
- : _.shuffle( _.range(assessment.questions.length) );
+ if (!paper)
+ {
+ assessment.indices = assessment.fixed
+ ? _.range(assessment.questions.length)
+ : _.shuffle( _.range(assessment.questions.length) );
+ }
+ else
+ {
+ // Resuming
+ let indices = paper.inputs.map( input => { return input.index; });
+ let remainingIndices = _.difference(_.range(assessment.questions.length), indices);
+ assessment.indices = indices.concat( _.shuffle(remainingIndices) );
+ }
+ assessment.index = !!paper ? paper.inputs.length : 0;
this.stage = 2;
Vue.nextTick( () => {
// Run Prism + MathJax on questions text
};
if (assessment.mode == "open")
return initializeStage2();
- // TODO: if existing password cookie: get stored answers (papers[number cookie]), inject (inputs), set index+indices
- // (instead of following ajax call)
$.ajax("/start/assessment", {
method: "GET",
data: {
dataType: "json",
success: s => {
if (!!s.errmsg)
- return alert(s.errmsg);
- this.student.password = s.password;
- // Got password: students answers locked to this page until potential teacher
- // action (power failure, computer down, ...)
- // TODO: set password cookie
+ return this.warning(s.errmsg);
+ if (!!s.paper)
+ {
+ // Resuming: receive stored answers + startTime
+ this.student.password = s.paper.password;
+ this.inputs = s.paper.inputs.map( inp => { return inp.input; });
+ }
+ else
+ {
+ this.student.password = s.password;
+ // Got password: students answers locked to this page until potential teacher
+ // action (power failure, computer down, ...)
+ }
// TODO: password also exchanged by sockets to check identity
//socket = io.connect("/" + assessment.name, {
// query: "number=" + this.student.number + "&password=" + this.password
//});
//socket.on(message.allAnswers, this.setAnswers);
//socket.on("disconnect", () => { }); //TODO: notify monitor (highlight red), redirect
- initializeStage2(s.questions);
+ initializeStage2(s.questions, s.paper);
},
});
},
dataType: "json",
success: ret => {
if (!!ret.errmsg)
- return alert(ret.errmsg);
+ return this.warning(ret.errmsg);
assessment.conclusion = ret.conclusion;
this.stage = 3;
delete this.student["password"]; //unable to send new answers now
router.get("/start/assessment", access.ajax, (req,res) => {
let number = req.query["number"];
let aid = req.query["aid"];
- let error = validator({ _id:aid, papers:[{number:number}] }, "Assessment");
+ let password = req.cookies["password"]; //potentially from cookies, resuming
+ let error = validator({ _id:aid, papers:[{number:number,password:password || "samplePwd"}] }, "Assessment");
if (error.length > 0)
return res.json({errmsg:error});
- AssessmentModel.startSession(ObjectId(aid), number, (err,ret) => {
+ AssessmentModel.startSession(ObjectId(aid), number, password, (err,ret) => {
access.checkRequest(res,err,ret,"Failed session initialization", () => {
- // Set password
- res.cookie("password", ret.password, {
- httpOnly: true,
- maxAge: params.cookieExpire,
- });
- res.json(ret); //contains questions+password
+ if (!password)
+ {
+ // Set password
+ res.cookie("password", ret.password, {
+ httpOnly: true,
+ maxAge: params.cookieExpire,
+ });
+ }
+ res.json(ret); //contains questions+password(or paper if resuming)
});
});
});
let error = validator({ _id:aid, papers:[{number:number,password:password,inputs:[input]}] }, "Assessment");
if (error.length > 0)
return res.json({errmsg:error});
- AssessmentEntity.setInput(ObjectId(aid), number, password, input, (err,ret) => {
+ AssessmentModel.newAnswer(ObjectId(aid), number, password, input, (err,ret) => {
access.checkRequest(res,err,ret,"Cannot send answer", () => {
res.json({});
});
.container#assessment
.row
#warning.modal
- .modal-content
- p Your answer to the current question was sent to the server.
- p To avoid future unpleasant surprises, please don't
- ul
- li resize the window, or
- li lose window focus.
+ .modal-content {{ warnMsg }}
.modal-footer
.center-align
- a.modal-action.modal-close.waves-effect.waves-light.btn-flat(href="#!") Got it!
+ a.modal-action.modal-close.waves-effect.waves-light.btn-flat(href="#!") Ok
.row
.col.s12.m10.offset-m1.l8.offset-l2.xl6.offset-xl3
h4= assessment.name
.card
.timer.center(v-if="stage==2") {{ countdown }}
.card
- statements(:assessment="assessment" :student="student" :stage="stage" :inputs="inputs" @gameover="endAssessment")
+ statements(:assessment="assessment" :student="student" :stage="stage" :inputs="inputs" @gameover="endAssessment" @warning="warning")
#stage3(v-show="stage==3")
.card
.finish Exam completed ☺ ...don't close the window!
projects / qomet.git / commitdiff