server/models/Challenge.js

   1 var db = require("../utils/database");
   2
   3 /*
   4  * Structure:
   5  *   id: integer
   6  *   added: datetime
   7  *   uid: user id (int)
   8  *   target: recipient id (optional)
   9  *   vid: variant id (int)
  10  *   fen: varchar (optional)
  11  *   timeControl: string (3m+2s, 7d+1d ...)
  12  */
  13
  14 const ChallengeModel =
  15 {
  16   checkChallenge: function(c)
  17   {
  18     if (!c.vid.toString().match(/^[0-9]+$/))
  19       return "Wrong variant ID";
  20     if (!c.timeControl.match(/^[0-9dhms +]+$/))
  21       return "Wrong characters in time control";
  22     if (!c.fen.match(/^[a-zA-Z0-9, /-]*$/))
  23       return "Bad FEN string";
  24     return "";
  25   },
  26
  27   // fen cannot be undefined
  28   create: function(c, cb)
  29   {
  30     db.serialize(function() {
  31       const query =
  32         "INSERT INTO Challenges " +
  33         "(added, uid, " + (!!c.to ? "target, " : "") +
  34           "vid, fen, timeControl) VALUES " +
  35         "(" + Date.now() + "," + c.uid + "," + (!!c.to ? c.to + "," : "") +
  36           c.vid + ",'" + c.fen + "','" + c.timeControl + "')";
  37       db.run(query, function(err) {
  38         return cb(err, {cid: this.lastID});
  39       });
  40     });
  41   },
  42
  43   getOne: function(id, cb)
  44   {
  45     db.serialize(function() {
  46       const query =
  47         "SELECT * " +
  48         "FROM Challenges " +
  49         "WHERE id = " + id;
  50       db.get(query, (err,challenge) => {
  51         return cb(err, challenge);
  52       });
  53     });
  54   },
  55
  56   // all challenges except where target is defined and not me
  57   getByUser: function(uid, cb)
  58   {
  59     db.serialize(function() {
  60       const query =
  61         "SELECT * " +
  62         "FROM Challenges " +
  63         "WHERE target IS NULL OR target = " + uid;
  64       db.all(query, (err,challenges) => {
  65         return cb(err, challenges);
  66       });
  67     });
  68   },
  69
  70   remove: function(id)
  71   {
  72     db.serialize(function() {
  73       const query =
  74         "DELETE FROM Challenges " +
  75         "WHERE id = " + id;
  76       db.run(query);
  77     });
  78   },
  79
  80   safeRemove: function(id, uid, cb)
  81   {
  82     db.serialize(function() {
  83       const query =
  84         "SELECT 1 " +
  85         "FROM Challenges " +
  86         "WHERE id = " + id + " AND uid = " + uid;
  87       db.get(query, (err,chall) => {
  88         if (!chall)
  89           return cb({errmsg: "Not your challenge"});
  90         ChallengeModel.remove(id);
  91         cb(null);
  92       });
  93     });
  94   },
  95 }
  96
  97 module.exports = ChallengeModel;