sockets.js

   1 const message = require("./public/javascripts/utils/socketMessages");
   2 const params = require("./config/parameters");
   3 const AssessmentModel = require("./models/assessment");
   4 const ObjectId = require("bson-objectid");
   5
   6 module.exports = function(io)
   7 {
   8     io.of("/").on("connection", socket => {
   9         const aid = socket.handshake.query.aid;
  10         socket.join(aid);
  11         // Student or monitor connexion
  12         const isTeacher = !!socket.handshake.query.secret && socket.handshake.query.secret == params.secret;
  13
  14         if (isTeacher)
  15         {
  16             socket.on(message.newAnswer, m => { //got answer from student
  17                 socket.emit(message.newAnswer, m);
  18             });
  19             socket.on(message.allAnswers, m => { //send feedback to student (answers)
  20                 socket.broadcast.to(aid).emit(message.allAnswers, m);
  21             });
  22         }
  23         else //student
  24         {
  25             const number = socket.handshake.query.number;
  26             const password = socket.handshake.query.password;
  27             AssessmentModel.checkPassword(ObjectId(aid), number, password, (err,ret) => {
  28                 if (!!err || !ret)
  29                     return; //wrong password, or some unexpected error...
  30                 socket.on("disconnect", () => {
  31                     //TODO: notify monitor (grey low opacity background)
  32                     //Also send to server: discoTime in assessment.papers ...
  33                 });
  34             });
  35         }
  36     });
  37 }