X-Git-Url: https://git.auder.net/?a=blobdiff_plain;f=server%2Fmodels%2FProblem.js;h=cc7400670ef8852d69b54dfcfacb3e02faba229d;hb=937c24ab2871b31a7e531226603fc75acab7edb8;hp=5c9af0b1803d6ff675d4970804bbfd5f74a4d48a;hpb=0234201fb338fc239d6f613c677fa932c7c3697c;p=vchess.git

diff --git a/server/models/Problem.js b/server/models/Problem.js
index 5c9af0b1..cc740067 100644
--- a/server/models/Problem.js
+++ b/server/models/Problem.js
@@ -12,6 +12,7 @@ const db = require("../utils/database");
  */
 
 const ProblemModel = {
+
   checkProblem: function(p) {
     return (
       p.id.toString().match(/^[0-9]+$/) &&
@@ -33,12 +34,19 @@ const ProblemModel = {
     });
   },
 
-  getAll: function(cb) {
+  getNext: function(uid, onlyMine, cursor, cb) {
+    let condition = "";
+    if (onlyMine) condition = "AND uid = " + uid + " ";
+    else if (!!uid) condition = "AND uid <> " + uid + " ";
     db.serialize(function() {
       const query =
         "SELECT * " +
-        "FROM Problems";
-      db.all(query, (err,problems) => {
+        "FROM Problems " +
+        "WHERE added < " + cursor + " " +
+        condition +
+        "ORDER BY added DESC " +
+        "LIMIT 20"; //TODO: 20 is arbitrary
+      db.all(query, (err, problems) => {
         cb(err, problems);
       });
     });
@@ -50,14 +58,16 @@ const ProblemModel = {
         "SELECT * " +
         "FROM Problems " +
         "WHERE id = " + id;
-      db.get(query, (err,problem) => {
+      db.get(query, (err, problem) => {
         cb(err, problem);
       });
     });
   },
 
-  safeUpdate: function(prob, uid) {
+  safeUpdate: function(prob, uid, devs) {
     db.serialize(function() {
+      let whereClause = "WHERE id = " + prob.id;
+      if (!devs.includes(uid)) whereClause += " AND uid = " + uid;
       const query =
         "UPDATE Problems " +
         "SET " +
@@ -65,19 +75,22 @@ const ProblemModel = {
           "fen = '" + prob.fen + "'," +
           "instruction = ?," +
           "solution = ? " +
-        "WHERE id = " + prob.id + " AND uid = " + uid;
-      db.run(query, [prob.instruction,prob.solution]);
+        whereClause;
+      db.run(query, [prob.instruction, prob.solution]);
     });
   },
 
-  safeRemove: function(id, uid) {
+  safeRemove: function(id, uid, devs) {
     db.serialize(function() {
+      let whereClause = "WHERE id = " + id;
+      if (!devs.includes(uid)) whereClause += " AND uid = " + uid;
       const query =
         "DELETE FROM Problems " +
-        "WHERE id = " + id + " AND uid = " + uid;
+        whereClause;
       db.run(query);
     });
-  },
-}
+  }
+
+};
 
 module.exports = ProblemModel;