server/models/Challenge.js

   1 const db = require("../utils/database");
   2 const UserModel = require("./User");
   3
   4 /*
   5  * Structure:
   6  *   id: integer
   7  *   added: datetime
   8  *   uid: user id (int)
   9  *   target: recipient id (optional)
  10  *   vid: variant id (int)
  11  *   randomness: integer in 0..2
  12  *   fen: varchar (optional)
  13  *   cadence: string (3m+2s, 7d ...)
  14  */
  15
  16 const ChallengeModel = {
  17
  18   checkChallenge: function(c) {
  19     return (
  20       c.vid.toString().match(/^[0-9]+$/) &&
  21       c.cadence.match(/^[0-9dhms +]+$/) &&
  22       c.randomness.toString().match(/^[0-2]$/) &&
  23       c.fen.match(/^[a-zA-Z0-9, /-]*$/) &&
  24       (!c.to || UserModel.checkNameEmail({ name: c.to }))
  25     );
  26   },
  27
  28   create: function(c, cb) {
  29     db.serialize(function() {
  30       const query =
  31         "INSERT INTO Challenges " +
  32           "(added, uid, " + (c.to ? "target, " : "") +
  33           "vid, randomness, fen, cadence) " +
  34         "VALUES " +
  35           "(" + Date.now() + "," + c.uid + "," + (c.to ? c.to + "," : "") +
  36           c.vid + "," + c.randomness + ",'" + c.fen + "','" + c.cadence + "')";
  37       db.run(query, function(err) {
  38         cb(err, { id: this.lastID });
  39       });
  40     });
  41   },
  42
  43   // All challenges related to user with ID uid
  44   getByUser: function(uid, cb) {
  45     db.serialize(function() {
  46       const query =
  47         "SELECT * " +
  48         "FROM Challenges " +
  49         "WHERE target IS NULL" +
  50           " OR uid = " + uid +
  51           " OR target = " + uid;
  52       db.all(query, (err, challenges) => {
  53         cb(err, challenges);
  54       });
  55     });
  56   },
  57
  58   remove: function(id) {
  59     db.serialize(function() {
  60       const query =
  61         "DELETE FROM Challenges " +
  62         "WHERE id = " + id;
  63       db.run(query);
  64     });
  65   },
  66
  67   safeRemove: function(id, uid) {
  68     db.serialize(function() {
  69       const query =
  70         "SELECT 1 " +
  71         "FROM Challenges " +
  72         "WHERE id = " + id + " " +
  73           // Condition: I'm the sender or the target
  74           "AND (uid = " + uid + " OR target = " + uid + ")";
  75       db.get(query, (err,chall) => {
  76         if (!err && chall)
  77           ChallengeModel.remove(id);
  78       });
  79     });
  80   }
  81
  82 };
  83
  84 module.exports = ChallengeModel;