routes/assessments.js

   1 let router = require("express").Router();
   2 const access = require("../utils/access");
   3 const UserModel = require("../models/user");
   4 const AssessmentModel = require("../models/assessment");
   5 const AssessmentEntity = require("../entities/assessment");
   6 const CourseModel = require("../models/course");
   7 const params = require("../config/parameters");
   8 const validator = require("../public/javascripts/utils/validation");
   9 const ObjectId = require("bson-objectid");
  10 const sanitizeHtml = require('sanitize-html');
  11
  12 router.get("/add/assessment", access.ajax, access.logged, (req,res) => {
  13     const name = req.query["name"];
  14     const cid = req.query["cid"];
  15     let error = validator({cid:cid, name:name}, "Assessment");
  16     if (error.length > 0)
  17         return res.json({errmsg:error});
  18     AssessmentModel.add(req.user._id, ObjectId(cid), name, (err,assessment) => {
  19         access.checkRequest(res, err, assessment, "Assessment addition failed", () => {
  20             res.json(assessment);
  21         });
  22     });
  23 });
  24
  25 router.post("/update/assessment", access.ajax, access.logged, (req,res) => {
  26     const assessment = JSON.parse(req.body["assessment"]);
  27     let error = validator(assessment, "Assessment");
  28     if (error.length > 0)
  29         return res.json({errmsg:error});
  30     const sanitizeOpts = {allowedTags: sanitizeHtml.defaults.allowedTags.concat([ 'img' ]) };
  31     assessment.introduction = sanitizeHtml(assessment.introduction, sanitizeOpts);
  32     assessment.conclusion = sanitizeHtml(assessment.conclusion, sanitizeOpts);
  33     assessment.questions.forEach( q => {
  34         q.wording = sanitizeHtml(q.wording, sanitizeOpts);
  35         //q.answer = sanitizeHtml(q.answer); //if text (TODO: it's an array in this case?!)
  36         for (let i=0; i<q.options.length; i++) //if QCM
  37             q.options[i] = sanitizeHtml(q.options[i], sanitizeOpts);
  38     });
  39     AssessmentModel.update(req.user._id, assessment, (err,ret) => {
  40         access.checkRequest(res, err, ret, "Assessment update failed", () => {
  41             res.json({});
  42         });
  43     });
  44 });
  45
  46 // Generate and set student password, return it
  47 router.get("/start/assessment", access.ajax, (req,res) => {
  48     let number = req.query["number"];
  49     let aid = req.query["aid"];
  50     let password = req.cookies["password"]; //potentially from cookies, resuming
  51     let error = validator({ _id:aid, papers:[{number:number,password:password || "samplePwd"}] }, "Assessment");
  52     if (error.length > 0)
  53         return res.json({errmsg:error});
  54     AssessmentModel.startSession(ObjectId(aid), number, password, (err,ret) => {
  55         access.checkRequest(res,err,ret,"Failed session initialization", () => {
  56             if (!password)
  57             {
  58                 // Set password
  59                 res.cookie("password", ret.password, {
  60                     httpOnly: true,
  61                     maxAge: params.cookieExpire,
  62                 });
  63             }
  64             res.json(ret); //contains questions+password(or paper if resuming)
  65         });
  66     });
  67 });
  68
  69 router.get("/send/answer", access.ajax, (req,res) => {
  70     let aid = req.query["aid"];
  71     let number = req.query["number"];
  72     let password = req.query["password"];
  73     let input = JSON.parse(req.query["answer"]);
  74     let error = validator({ _id:aid, papers:[{number:number,password:password,inputs:[input]}] }, "Assessment");
  75     if (error.length > 0)
  76         return res.json({errmsg:error});
  77     AssessmentModel.newAnswer(ObjectId(aid), number, password, input, (err,ret) => {
  78         access.checkRequest(res,err,ret,"Cannot send answer", () => {
  79             res.json({});
  80         });
  81     });
  82 });
  83
  84 router.get("/end/assessment", access.ajax, (req,res) => {
  85     let aid = req.query["aid"];
  86     let number = req.query["number"];
  87     let password = req.query["password"];
  88     let error = validator({ _id:aid, papers:[{number:number,password:password}] }, "Assessment");
  89     if (error.length > 0)
  90         return res.json({errmsg:error});
  91     // Destroy pwd, set endTime, return conclusion
  92     AssessmentModel.endSession(ObjectId(aid), number, password, (err,conclusion) => {
  93         access.checkRequest(res,err,conclusion,"Cannot end assessment", () => {
  94             res.clearCookie('password');
  95             res.json(conclusion);
  96         });
  97     });
  98 });
  99
 100 module.exports = router;