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  *   fen: varchar (optional)
  12  *   cadence: string (3m+2s, 7d+1d ...)
  13  */
  14
  15 const ChallengeModel =
  16 {
  17   checkChallenge: function(c)
  18   {
  19     return (
  20       c.vid.toString().match(/^[0-9]+$/) &&
  21       c.cadence.match(/^[0-9dhms +]+$/) &&
  22       c.fen.match(/^[a-zA-Z0-9, /-]*$/) &&
  23       (!c.to || UserModel.checkNameEmail({name: c.to}))
  24     );
  25   },
  26
  27   create: function(c, cb)
  28   {
  29     db.serialize(function() {
  30       const query =
  31         "INSERT INTO Challenges " +
  32         "(added, uid, " + (!!c.to ? "target, " : "") + "vid, fen, cadence) " +
  33           "VALUES " +
  34         "(" + Date.now() + "," + c.uid + "," + (!!c.to ? c.to + "," : "") +
  35           c.vid + ",'" + c.fen + "','" + c.cadence + "')";
  36       db.run(query, function(err) {
  37         cb(err, {cid: this.lastID});
  38       });
  39     });
  40   },
  41
  42   // All challenges related to user with ID uid
  43   getByUser: function(uid, cb)
  44   {
  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   {
  60     db.serialize(function() {
  61       const query =
  62         "DELETE FROM Challenges " +
  63         "WHERE id = " + id;
  64       db.run(query);
  65     });
  66   },
  67
  68   safeRemove: function(id, uid)
  69   {
  70     db.serialize(function() {
  71       const query =
  72         "SELECT 1 " +
  73         "FROM Challenges " +
  74         "WHERE id = " + id + " AND uid = " + uid;
  75       db.get(query, (err,chall) => {
  76         if (!err && chall)
  77           ChallengeModel.remove(id);
  78       });
  79     });
  80   },
  81 }
  82
  83 module.exports = ChallengeModel;