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.match(/^[0-9]+$/))
  19       return "Wrong variant ID";
  20
  21     if (!c.timeControl.match(/^[0-9dhms +]+$/))
  22       return "Wrong characters in time control";
  23
  24     if (!c.fen.match(/^[a-zA-Z0-9, /-]+$/))
  25       return "Bad FEN string";
  26   },
  27
  28   // fen cannot be undefined
  29   create: function(c, cb)
  30   {
  31     db.serialize(function() {
  32       let query =
  33         "INSERT INTO Challenges " +
  34         "(added, uid, " + (!!c.to ? "target, " : "") +
  35           "vid, fen, timeControl) VALUES " +
  36         "(" + Date.now() + "," + c.uid + "," + (!!c.to ? c.to + "," : "") +
  37           c.vid + ",'" + c.fen + "','" + c.timeControl + "')";
  38       db.run(query, err => {
  39         return cb(err);
  40       });
  41     });
  42   },
  43
  44   getOne: function(id, cb)
  45   {
  46     db.serialize(function() {
  47       let query =
  48         "SELECT * " +
  49         "FROM Challenges " +
  50         "WHERE id = " + id;
  51       db.get(query, (err,challenge) => {
  52         return cb(err, challenge);
  53       });
  54     });
  55   },
  56
  57   // all challenges except where target is defined and not me
  58   getByUser: function(uid, cb)
  59   {
  60     db.serialize(function() {
  61       const query =
  62         "SELECT * " +
  63         "FROM Challenges " +
  64         "WHERE target IS NULL OR target = " + uid;
  65       db.run(query, (err,challenges) => {
  66         return cb(err, challenges);
  67       });
  68     });
  69   },
  70
  71   remove: function(id, uid)
  72   {
  73     db.serialize(function() {
  74       let query =
  75         "SELECT 1 " +
  76         "FROM Challenges " +
  77         "WHERE id = " + id + " AND uid = " + uid;
  78       db.run(query, (err,rows) => {
  79         if (rows.length == 0)
  80           return res.json({errmsg: "Not your challenge"});
  81         query =
  82           "DELETE FROM Challenges " +
  83           "WHERE id = " + id;
  84         db.run(query);
  85       });
  86     });
  87   },
  88 }
  89
  90 module.exports = ChallengeModel;