/*
* Structure:
- * _id: problem number (int)
+ * id: problem number (int)
* uid: user id (int)
* vid: variant id (int)
* added: timestamp
* solution: text
*/
-exports.create = function(vname, fen, instructions, solution)
+exports.create = function(uid, vid, fen, instructions, solution, cb)
{
db.serialize(function() {
- db.get("SELECT id FROM Variants WHERE name = '" + vname + "'", (err,variant) => {
- db.run(
- "INSERT INTO Problems (added, vid, fen, instructions, solution) VALUES " +
- "(" +
- Date.now() + "," +
- variant._id + "," +
- fen + "," +
- instructions + "," +
- solution +
- ")");
+ const insertQuery =
+ "INSERT INTO Problems (added, uid, vid, fen, instructions, solution) " +
+ "VALUES (" + Date.now() + "," + uid + "," + vid + ",'" + fen + "',?,?)";
+ db.run(insertQuery, [instructions, solution], err => {
+ if (!!err)
+ return cb(err);
+ db.get("SELECT last_insert_rowid() AS rowid", cb);
});
});
}
-exports.getById = function(id, callback)
+exports.getOne = function(id, callback)
{
db.serialize(function() {
- db.get(
- "SELECT * FROM Problems " +
- "WHERE id ='" + id + "'",
- callback);
+ const query =
+ "SELECT * " +
+ "FROM Problems " +
+ "WHERE id = " + id;
+ db.get(query, callback);
});
}
-exports.fetchN = function(vname, directionStr, lastDt, MaxNbProblems, callback)
+exports.fetchN = function(vid, uid, type, directionStr, lastDt, MaxNbProblems, callback)
{
db.serialize(function() {
- db.all(
+ let typeLine = "";
+ if (uid > 0)
+ typeLine = "AND uid " + (type=="others" ? "!=" : "=") + " " + uid;
+ const query =
"SELECT * FROM Problems " +
- "WHERE vid = (SELECT id FROM Variants WHERE name = '" + vname + "') " +
- " AND added " + directionStr + " " + lastDt + " " +
+ "WHERE vid = " + vid +
+ " AND added " + directionStr + " " + lastDt + " " + typeLine + " " +
"ORDER BY added " + (directionStr=="<" ? "DESC " : "") +
- "LIMIT " + MaxNbProblems,
- callback);
+ "LIMIT " + MaxNbProblems;
+ db.all(query, callback);
});
}
-exports.update = function(id, uid, fen, instructions, solution)
+// TODO: update fails (but insert is OK)
+exports.update = function(id, uid, fen, instructions, solution, cb)
{
db.serialize(function() {
- db.run(
- "UPDATE Problems " +
- "fen = " + fen + ", " +
- "instructions = " + instructions + ", " +
- "solution = " + solution + " " +
- "WHERE id = " + id + " AND uid = " + uid);
+ const query =
+ "UPDATE Problems SET " +
+ "fen = '" + fen + "', " +
+ "instructions = ?, " +
+ "solution = ? " +
+ "WHERE id = " + id + " AND uid = " + uid;
+ db.run(query, [instructions,solution], cb);
});
}
exports.remove = function(id, uid)
{
db.serialize(function() {
- db.run(
+ const query =
"DELETE FROM Problems " +
- "WHERE id = " + id + " AND uid = " + uid);
+ "WHERE id = " + id + " AND uid = " + uid;
+ db.run(query);
});
}