+++ /dev/null
-let socket = null; //monitor answers in real time
-
-if (assessment.mode == "secure" && !checkWindowSize())
- document.location.href= "/fullscreen";
-
-function checkWindowSize()
-{
- // NOTE: temporarily accept smartphone (security hole: pretend being a smartphone on desktop browser...)
- if (navigator.userAgent.match(/(iPhone|iPod|iPad|Android|BlackBerry)/))
- return true;
- // 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({
- el: "#assessment",
- data: {
- assessment: assessment,
- answers: { }, //filled later with answering parameters
- student: { }, //filled later (name, password)
- // Stage 0: unauthenticated (number),
- // 1: authenticated (got a name, unvalidated)
- // 2: locked: password set, exam started
- // 3: completed
- // 4: show answers
- remainingTime: assessment.time, //integer or array
- stage: assessment.mode != "open" ? 0 : 1,
- warnMsg: "",
- },
- computed: {
- countdown: function() {
- const remainingTime = assessment.display == "one" && _.isArray(assessment.time)
- ? this.remainingTime[this.answers.index]
- : this.remainingTime;
- let seconds = remainingTime % 60;
- let minutes = Math.floor(remainingTime / 60);
- return this.padWithZero(minutes) + ":" + this.padWithZero(seconds);
- },
- },
- mounted: function() {
- $(".modal").modal();
- if (["exam","open"].includes(assessment.mode))
- return;
- window.addEventListener("blur", () => {
- if (this.stage != 2)
- return;
- if (assessment.mode == "secure")
- {
- this.sendAnswer();
- document.location.href= "/noblur";
- }
- else //"watch" mode
- socket.emit(message.studentBlur, {number:this.student.number});
- }, false);
- if (assessment.mode == "watch")
- {
- window.addEventListener("focus", () => {
- if (this.stage != 2)
- return;
- socket.emit(message.studentFocus, {number:this.student.number});
- }, false);
- }
- window.addEventListener("resize", e => {
- if (this.stage != 2)
- return;
- if (assessment.mode == "secure")
- {
- this.sendAnswer();
- document.location.href = "/fullscreen";
- }
- else //"watch" mode
- {
- if (checkWindowSize())
- socket.emit(message.studentFullscreen, {number:this.student.number});
- else
- socket.emit(message.studentResize, {number:this.student.number});
- }
- }, false);
- },
- methods: {
- // In case of AJAX errors (not blur-ing)
- showWarning: function(message) {
- this.warnMsg = message;
- $("#warning").modal("open");
- },
- padWithZero: function(x) {
- if (x < 10)
- return "0" + x;
- return x;
- },
- // stage 0 --> 1
- getStudent: function() {
- $.ajax("/courses/student", {
- method: "GET",
- data: {
- number: this.student.number,
- cid: assessment.cid,
- },
- dataType: "json",
- success: s => {
- if (!!s.errmsg)
- return this.showWarning(s.errmsg);
- this.stage = 1;
- this.student = s.student;
- Vue.nextTick( () => { Materialize.updateTextFields(); });
- },
- });
- },
- // stage 1 --> 0
- cancelStudent: function() {
- this.stage = 0;
- },
- // stage 1 --> 2 (get all questions, set password)
- startAssessment: function() {
- let initializeStage2 = paper => {
- $("#leftButton, #rightButton").hide();
- // Initialize structured answer(s) based on questions type and nesting (TODO: more general)
-
- // if display == "all" getQuestionS
- // otherwise get first question
-
-
- if (!!questions)
- assessment.questions = questions;
- this.answers.inputs = [ ];
- for (let q of assessment.questions)
- this.answers.inputs.push( _(q.options.length).times( _.constant(false) ) );
- if (!paper)
- {
- this.answers.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).map(String), indices );
- this.answers.indices = indices.concat( _.shuffle(remainingIndices) );
- }
-
-
-
-
-
-
-
- if (assessment.time > 0)
- {
-
-// TODO: distinguish total exam time AND question time
-
- const deltaTime = !!paper ? Date.now() - paper.startTime : 0;
- this.remainingTime = assessment.time * 60 - Math.round(deltaTime / 1000);
- this.runTimer();
- }
-
-
- this.answers.index = !!paper ? paper.inputs.length : 0;
- this.answers.displayAll = assessment.display == "all";
- this.answers.showSolution = false;
- this.stage = 2;
- };
- if (assessment.mode == "open")
- return initializeStage2();
- $.ajax("/assessments/start", {
- method: "PUT",
- data: {
- number: this.student.number,
- aid: assessment._id
- },
- dataType: "json",
- success: s => {
- if (!!s.errmsg)
- return this.showWarning(s.errmsg);
- if (!!s.paper)
- {
- // Resuming: receive stored answers + startTime
- this.student.password = s.paper.password;
- this.answers.inputs = s.paper.inputs.map( inp => { return inp.input; });
- }
- else
- {
- this.student.password = s.password;
- // Got password: students answers locked to this page until potential teacher
- // action (power failure, computer down, ...)
- }
- socket = io.connect("/", {
- query: "aid=" + assessment._id + "&number=" + this.student.number + "&password=" + this.student.password
- });
- socket.on(message.allAnswers, this.setAnswers);
- initializeStage2(s.questions, s.paper);
- },
- });
- },
-
-
- // stage 2
- runGlobalTimer: function() {
- if (assessment.time <= 0)
- return;
- let self = this;
- setInterval( function() {
- self.remainingTime--;
- if (self.remainingTime <= 0)
- {
- if (self.stage == 2)
- self.endAssessment();
- clearInterval(this);
- }
- }, 1000);
- },
- runQuestionTimer: function(idx) {
- if (assessment.questions[idx].time <= 0)
- return;
- let self = this; //TODO: question remaining time
- setInterval( function() {
- self.remainingTime--;
- if (self.remainingTime <= 0)
- {
- if (self.stage == 2)
- self.endAssessment();
- clearInterval(this);
- }
- }, 1000);
- },
-
-//TODO: get question after sending answer
-
- // stage 2
- sendOneAnswer: function() {
- const realIndex = this.answers.indices[this.answers.index];
- let gotoNext = () => {
- if (this.answers.index == assessment.questions.length - 1)
- this.endAssessment();
- else
- this.answers.index++;
- this.$children[0].$forceUpdate(); //TODO: bad HACK, and shouldn't be required...
- };
- if (assessment.mode == "open")
- return gotoNext(); //only local
- let answerData = {
- aid: assessment._id,
- answer: JSON.stringify({
- index: realIndex.toString(),
- input: this.answers.inputs[realIndex]
- .map( (tf,i) => { return {val:tf,idx:i}; } )
- .filter( item => { return item.val; })
- .map( item => { return item.idx; })
- }),
- number: this.student.number,
- password: this.student.password,
- };
- $.ajax("/assessments/answer", {
- method: "PUT",
- data: answerData,
- dataType: "json",
- success: ret => {
- if (!!ret.errmsg)
- return this.showWarning(ret.errmsg);
- gotoNext();
- socket.emit(message.newAnswer, answerData);
- },
- });
- },
- // TODO: I don't like that + sending should not be definitive in exam mode with display = all
- sendAnswer: function() {
- if (assessment.display == "one")
- this.sendOneAnswer();
- else
- assessment.questions.forEach(this.sendOneAnswer);
- },
- // stage 2 --> 3 (or 4)
- // from a message by statements component, or time over
- endAssessment: function() {
- // Set endTime, destroy password
- $("#leftButton, #rightButton").show();
- if (assessment.mode == "open")
- {
- this.stage = 4;
- this.answers.showSolution = true;
- this.answers.displayAll = true;
- return;
- }
- $.ajax("/assessments/end", {
- method: "PUT",
- data: {
- aid: assessment._id,
- number: this.student.number,
- password: this.student.password,
- },
- dataType: "json",
- success: ret => {
- if (!!ret.errmsg)
- return this.showWarning(ret.errmsg);
- this.stage = 3;
- delete this.student["password"]; //unable to send new answers now
- },
- });
- },
- // stage 3 --> 4 (on socket message "feedback")
- setAnswers: function(m) {
- const answers = JSON.parse(m.answers);
- for (let i=0; i<answers.length; i++)
- assessment.questions[i].answer = answers[i];
- this.answers.showSolution = true;
- this.answers.displayAll = true;
- this.stage = 4;
- socket.disconnect();
- socket = null;
- },
- },
-});
projects / qomet.git / blobdiff
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