| 1 | let socket = null; //monitor answers in real time |
| 2 | |
| 3 | function checkWindowSize() |
| 4 | { |
| 5 | if (assessment.mode == "secure") |
| 6 | { |
| 7 | // NOTE: temporarily accept smartphone (security hole: pretend being a smartphone on desktop browser...) |
| 8 | if (navigator.userAgent.match(/(iPhone|iPod|iPad|Android|BlackBerry)/)) |
| 9 | return true; |
| 10 | let test = () => { |
| 11 | return window.innerWidth < screen.width || window.innerHeight < screen.height; |
| 12 | }; |
| 13 | const returnVal = test; |
| 14 | while (!test) |
| 15 | alert("Please enter fullscreen mode (F11)"); |
| 16 | return returnVal; |
| 17 | } |
| 18 | return true; |
| 19 | }; |
| 20 | |
| 21 | function libsRefresh() |
| 22 | { |
| 23 | $("#statements").find("code[class^=language-]").each( (i,elem) => { |
| 24 | Prism.highlightElement(elem); |
| 25 | }); |
| 26 | MathJax.Hub.Queue(["Typeset",MathJax.Hub,"statements"]); |
| 27 | }; |
| 28 | |
| 29 | // TODO: if display == "all", les envois devraient être non définitifs (possibilité de corriger) |
| 30 | // Et, blur sur une (sous-)question devrait envoyer la version courante de la sous-question |
| 31 | |
| 32 | let V = new Vue({ |
| 33 | el: "#assessment", |
| 34 | data: { |
| 35 | assessment: assessment, |
| 36 | inputs: [ ], //student's answers |
| 37 | student: { }, //filled later |
| 38 | // Stage 0: unauthenticated (number), |
| 39 | // 1: authenticated (got a name, unvalidated) |
| 40 | // 2: locked: password set, exam started |
| 41 | // 3: completed |
| 42 | // 4: show answers |
| 43 | stage: assessment.mode != "open" ? 0 : 1, |
| 44 | remainingTime: 0, //global, in seconds |
| 45 | }, |
| 46 | components: { |
| 47 | "statements": { |
| 48 | props: ['assessment','inputs','student','stage'], |
| 49 | data: function() { |
| 50 | return { |
| 51 | index: 0, //current question index in assessment.indices |
| 52 | }; |
| 53 | }, |
| 54 | mounted: function() { |
| 55 | if (assessment.mode != "secure") |
| 56 | return; |
| 57 | $("#warning").modal({ |
| 58 | complete: () => { |
| 59 | this.stage = 2; |
| 60 | this.resumeAssessment(); |
| 61 | }, |
| 62 | }); |
| 63 | window.addEventListener("blur", () => { |
| 64 | if (this.stage == 2) |
| 65 | this.showWarning(); |
| 66 | }, false); |
| 67 | window.addEventListener("resize", e => { |
| 68 | if (this.stage == 2 && !checkWindowSize()) |
| 69 | this.showWarning(); |
| 70 | }, false); |
| 71 | //socket.on("disconnect", () => { }); //TODO: notify monitor (highlight red) |
| 72 | }, |
| 73 | updated: function() { |
| 74 | libsRefresh(); |
| 75 | }, |
| 76 | // TODO: general render function for nested exercises |
| 77 | // TODO: with answer if stage==4 : class "wrong" if ticked AND stage==4 AND received answers |
| 78 | // class "right" if stage == 4 AND received answers (background-color: red / green) |
| 79 | // There should be a questions navigator below, or next (visible if display=='all') |
| 80 | // Full questions tree is rendered, but some parts hidden depending on display settings |
| 81 | render(h) { |
| 82 | let self = this; |
| 83 | let questions = assessment.questions.map( (q,i) => { |
| 84 | let questionContent = [ ]; |
| 85 | questionContent.push( |
| 86 | h( |
| 87 | "div", |
| 88 | { |
| 89 | "class": { |
| 90 | "wording": true, |
| 91 | }, |
| 92 | domProps: { |
| 93 | innerHTML: q.wording, |
| 94 | }, |
| 95 | } |
| 96 | ) |
| 97 | ); |
| 98 | let optionsOrder = _.range(q.options.length); |
| 99 | if (!q.fixed) |
| 100 | optionsOrder = _.shuffle(optionsOrder); |
| 101 | let optionList = [ ]; |
| 102 | optionsOrder.forEach( idx => { |
| 103 | let option = [ ]; |
| 104 | option.push( |
| 105 | h( |
| 106 | "input", |
| 107 | { |
| 108 | domProps: { |
| 109 | checked: this.inputs[i][idx], |
| 110 | }, |
| 111 | attrs: { |
| 112 | id: this.inputId(i,idx), |
| 113 | type: "checkbox", |
| 114 | }, |
| 115 | on: { |
| 116 | change: e => { this.inputs[i][idx] = e.target.checked; }, |
| 117 | }, |
| 118 | }, |
| 119 | ) |
| 120 | ); |
| 121 | option.push( |
| 122 | h( |
| 123 | "label", |
| 124 | { |
| 125 | domProps: { |
| 126 | innerHTML: q.options[idx], |
| 127 | }, |
| 128 | attrs: { |
| 129 | "for": this.inputId(i,idx), |
| 130 | }, |
| 131 | } |
| 132 | ) |
| 133 | ); |
| 134 | optionList.push( |
| 135 | h( |
| 136 | "div", |
| 137 | { |
| 138 | "class": { |
| 139 | option: true, |
| 140 | choiceCorrect: this.stage == 4 && assessment.questions[i].answer.includes(idx), |
| 141 | choiceWrong: this.stage == 4 && this.inputs[i][idx] && !assessment.questions[i].answer.includes(idx), |
| 142 | }, |
| 143 | }, |
| 144 | option |
| 145 | ) |
| 146 | ); |
| 147 | }); |
| 148 | questionContent.push( |
| 149 | h( |
| 150 | "div", |
| 151 | { |
| 152 | "class": { |
| 153 | optionList: true, |
| 154 | }, |
| 155 | }, |
| 156 | optionList |
| 157 | ) |
| 158 | ); |
| 159 | return h( |
| 160 | "div", |
| 161 | { |
| 162 | "class": { |
| 163 | "question": true, |
| 164 | "hide": this.stage == 2 && assessment.display == 'one' && assessment.indices[this.index] != i, |
| 165 | }, |
| 166 | }, |
| 167 | questionContent |
| 168 | ); |
| 169 | }); |
| 170 | if (this.stage == 2) |
| 171 | { |
| 172 | // TODO: one button per question |
| 173 | questions.unshift( |
| 174 | h( |
| 175 | "button", |
| 176 | { |
| 177 | "class": { |
| 178 | "waves-effect": true, |
| 179 | "waves-light": true, |
| 180 | "btn": true, |
| 181 | }, |
| 182 | on: { |
| 183 | click: () => this.sendAnswer(assessment.indices[this.index]), |
| 184 | }, |
| 185 | }, |
| 186 | "Send" |
| 187 | ) |
| 188 | ); |
| 189 | } |
| 190 | return h( |
| 191 | "div", |
| 192 | { |
| 193 | attrs: { |
| 194 | id: "statements", |
| 195 | }, |
| 196 | }, |
| 197 | questions |
| 198 | ); |
| 199 | }, |
| 200 | methods: { |
| 201 | // HELPERS: |
| 202 | inputId: function(i,j) { |
| 203 | return "q" + i + "_" + "input" + j; |
| 204 | }, |
| 205 | showWarning: function(action) { |
| 206 | this.sendAnswer(assessment.indices[this.index]); |
| 207 | this.stage = 32; //fictive stage to hide all elements |
| 208 | $("#warning").modal('open'); |
| 209 | }, |
| 210 | // stage 2 |
| 211 | sendAnswer: function(realIndex) { |
| 212 | if (this.index == assessment.questions.length - 1) |
| 213 | this.$emit("gameover"); |
| 214 | else |
| 215 | this.index++; |
| 216 | if (assessment.mode == "open") |
| 217 | return; //only local |
| 218 | let answerData = { |
| 219 | aid: assessment._id, |
| 220 | answer: JSON.stringify({ |
| 221 | index:realIndex.toString(), |
| 222 | input:this.inputs[realIndex] |
| 223 | .map( (tf,i) => { return {val:tf,idx:i}; } ) |
| 224 | .filter( item => { return item.val; }) |
| 225 | .map( item => { return item.idx; }) |
| 226 | }), |
| 227 | number: this.student.number, |
| 228 | password: this.student.password, |
| 229 | }; |
| 230 | $.ajax("/send/answer", { |
| 231 | method: "GET", |
| 232 | data: answerData, |
| 233 | dataType: "json", |
| 234 | success: ret => { |
| 235 | if (!!ret.errmsg) |
| 236 | return alert(ret.errmsg); |
| 237 | //socket.emit(message.newAnswer, answer); |
| 238 | }, |
| 239 | }); |
| 240 | }, |
| 241 | // stage 2 after blur or resize |
| 242 | resumeAssessment: function() { |
| 243 | checkWindowSize(); |
| 244 | }, |
| 245 | }, |
| 246 | }, |
| 247 | }, |
| 248 | mounted: function() { |
| 249 | window.addEventListener("keydown", e => { |
| 250 | // If F12 or ctrl+shift (ways to access devtools) |
| 251 | if (e.keyCode == 123 || (e.ctrlKey && e.shiftKey)) |
| 252 | e.preventDefault(); |
| 253 | }, false); |
| 254 | // Devtools detect based on https://jsfiddle.net/ebhjxfwv/4/ |
| 255 | let div = document.createElement('div'); |
| 256 | let devtoolsLoop = setInterval( |
| 257 | () => { |
| 258 | if (assessment.mode != "open") |
| 259 | { |
| 260 | console.log(div); |
| 261 | console.clear(); |
| 262 | } |
| 263 | }, |
| 264 | 1000 |
| 265 | ); |
| 266 | Object.defineProperty(div, "id", { |
| 267 | get: () => { |
| 268 | clearInterval(devtoolsLoop); |
| 269 | if (assessment.mode != "open") |
| 270 | { |
| 271 | if (this.stage == 2) |
| 272 | this.endAssessment(); |
| 273 | document.location.href = "/nodevtools"; |
| 274 | } |
| 275 | } |
| 276 | }); |
| 277 | }, |
| 278 | computed: { |
| 279 | countdown: function() { |
| 280 | let seconds = this.remainingTime % 60; |
| 281 | let minutes = Math.floor(this.remainingTime / 60); |
| 282 | return this.padWithZero(minutes) + ":" + this.padWithZero(seconds); |
| 283 | }, |
| 284 | }, |
| 285 | methods: { |
| 286 | // HELPERS: |
| 287 | padWithZero: function(x) { |
| 288 | if (x < 10) |
| 289 | return "0" + x; |
| 290 | return x; |
| 291 | }, |
| 292 | // stage 0 --> 1 |
| 293 | getStudent: function(cb) { |
| 294 | $.ajax("/get/student", { |
| 295 | method: "GET", |
| 296 | data: { |
| 297 | number: this.student.number, |
| 298 | cid: assessment.cid, |
| 299 | }, |
| 300 | dataType: "json", |
| 301 | success: s => { |
| 302 | if (!!s.errmsg) |
| 303 | return alert(s.errmsg); |
| 304 | this.stage = 1; |
| 305 | this.student = s.student; |
| 306 | Vue.nextTick( () => { Materialize.updateTextFields(); }); |
| 307 | if (!!cb) |
| 308 | cb(); |
| 309 | }, |
| 310 | }); |
| 311 | }, |
| 312 | // stage 1 --> 0 |
| 313 | cancelStudent: function() { |
| 314 | this.stage = 0; |
| 315 | }, |
| 316 | // stage 1 --> 2 (get all questions, set password) |
| 317 | startAssessment: function() { |
| 318 | checkWindowSize(); |
| 319 | let initializeStage2 = questions => { |
| 320 | $("#leftButton, #rightButton").hide(); |
| 321 | if (assessment.time > 0) |
| 322 | { |
| 323 | this.remainingTime = assessment.time * 60; |
| 324 | this.runTimer(); |
| 325 | } |
| 326 | // Initialize structured answer(s) based on questions type and nesting (TODO: more general) |
| 327 | if (!!questions) |
| 328 | assessment.questions = questions; |
| 329 | for (let q of assessment.questions) |
| 330 | this.inputs.push( _(q.options.length).times( _.constant(false) ) ); |
| 331 | assessment.indices = assessment.fixed |
| 332 | ? _.range(assessment.questions.length) |
| 333 | : _.shuffle( _.range(assessment.questions.length) ); |
| 334 | this.stage = 2; |
| 335 | Vue.nextTick( () => { libsRefresh(); }); |
| 336 | }; |
| 337 | if (assessment.mode == "open") |
| 338 | return initializeStage2(); |
| 339 | $.ajax("/start/assessment", { |
| 340 | method: "GET", |
| 341 | data: { |
| 342 | number: this.student.number, |
| 343 | aid: assessment._id |
| 344 | }, |
| 345 | dataType: "json", |
| 346 | success: s => { |
| 347 | if (!!s.errmsg) |
| 348 | return alert(s.errmsg); |
| 349 | this.student.password = s.password; |
| 350 | // Got password: students answers locked to this page until potential teacher |
| 351 | // action (power failure, computer down, ...) |
| 352 | // TODO: password also exchanged by sockets to check identity |
| 353 | //socket = io.connect("/" + assessment.name, { |
| 354 | // query: "number=" + this.student.number + "&password=" + this.password |
| 355 | //}); |
| 356 | //socket.on(message.allAnswers, this.setAnswers); |
| 357 | initializeStage2(s.questions); |
| 358 | }, |
| 359 | }); |
| 360 | }, |
| 361 | // stage 2 |
| 362 | runTimer: function() { |
| 363 | if (assessment.time <= 0) |
| 364 | return; |
| 365 | let self = this; |
| 366 | setInterval( function() { |
| 367 | self.remainingTime--; |
| 368 | if (self.remainingTime <= 0 || self.stage >= 4) |
| 369 | self.endAssessment(); |
| 370 | clearInterval(this); |
| 371 | }, 1000); |
| 372 | }, |
| 373 | // stage 2 after disconnect (socket) |
| 374 | resumeAssessment: function() { |
| 375 | // UNIMPLEMENTED |
| 376 | // TODO: get stored answers (papers[number cookie]), inject (inputs), set index+indices |
| 377 | }, |
| 378 | // stage 2 --> 3 (or 4) |
| 379 | // from a message by statements component |
| 380 | endAssessment: function() { |
| 381 | // If time over or cheating: set endTime, destroy password |
| 382 | $("#leftButton, #rightButton").show(); |
| 383 | //this.sendAnswer(...); //TODO: for each non-answered (and non-empty!) index (yet) |
| 384 | if (assessment.mode != "open") |
| 385 | { |
| 386 | $.ajax("/end/assessment", { |
| 387 | method: "GET", |
| 388 | data: { |
| 389 | aid: assessment._id, |
| 390 | number: this.student.number, |
| 391 | password: this.student.password, |
| 392 | }, |
| 393 | dataType: "json", |
| 394 | success: ret => { |
| 395 | if (!!ret.errmsg) |
| 396 | return alert(ret.errmsg); |
| 397 | assessment.conclusion = ret.conclusion; |
| 398 | this.stage = 3; |
| 399 | delete this.student["password"]; //unable to send new answers now |
| 400 | //socket.disconnect(); |
| 401 | //socket = null; |
| 402 | }, |
| 403 | }); |
| 404 | } |
| 405 | else |
| 406 | this.stage = 4; |
| 407 | }, |
| 408 | // stage 3 --> 4 (on socket message "feedback") |
| 409 | setAnswers: function(answers) { |
| 410 | for (let i=0; i<answers.length; i++) |
| 411 | assessment.questions[i].answer = answers[i]; |
| 412 | this.stage = 4; |
| 413 | }, |
| 414 | }, |
| 415 | }); |