Commit | Line | Data |
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8d7e2786 BA |
1 | var db = require("../utils/database"); |
2 | ||
3 | /* | |
4 | * Structure: | |
c018b304 | 5 | * id: problem number (int) |
8d7e2786 BA |
6 | * uid: user id (int) |
7 | * vid: variant id (int) | |
8 | * added: timestamp | |
9 | * instructions: text | |
10 | * solution: text | |
11 | */ | |
12 | ||
13 | exports.create = function(vname, fen, instructions, solution) | |
14 | { | |
15 | db.serialize(function() { | |
16 | db.get("SELECT id FROM Variants WHERE name = '" + vname + "'", (err,variant) => { | |
17 | db.run( | |
18 | "INSERT INTO Problems (added, vid, fen, instructions, solution) VALUES " + | |
19 | "(" + | |
20 | Date.now() + "," + | |
c018b304 | 21 | variant.id + "," + |
8d7e2786 BA |
22 | fen + "," + |
23 | instructions + "," + | |
24 | solution + | |
25 | ")"); | |
26 | }); | |
27 | }); | |
28 | } | |
29 | ||
30 | exports.getById = function(id, callback) | |
31 | { | |
32 | db.serialize(function() { | |
33 | db.get( | |
34 | "SELECT * FROM Problems " + | |
35 | "WHERE id ='" + id + "'", | |
36 | callback); | |
37 | }); | |
38 | } | |
39 | ||
40 | exports.fetchN = function(vname, directionStr, lastDt, MaxNbProblems, callback) | |
41 | { | |
42 | db.serialize(function() { | |
43 | db.all( | |
44 | "SELECT * FROM Problems " + | |
45 | "WHERE vid = (SELECT id FROM Variants WHERE name = '" + vname + "') " + | |
46 | " AND added " + directionStr + " " + lastDt + " " + | |
47 | "ORDER BY added " + (directionStr=="<" ? "DESC " : "") + | |
48 | "LIMIT " + MaxNbProblems, | |
49 | callback); | |
50 | }); | |
51 | } | |
52 | ||
53 | exports.update = function(id, uid, fen, instructions, solution) | |
54 | { | |
55 | db.serialize(function() { | |
56 | db.run( | |
57 | "UPDATE Problems " + | |
58 | "fen = " + fen + ", " + | |
59 | "instructions = " + instructions + ", " + | |
60 | "solution = " + solution + " " + | |
61 | "WHERE id = " + id + " AND uid = " + uid); | |
62 | }); | |
63 | } | |
64 | ||
65 | exports.remove = function(id, uid) | |
66 | { | |
67 | db.serialize(function() { | |
68 | db.run( | |
69 | "DELETE FROM Problems " + | |
70 | "WHERE id = " + id + " AND uid = " + uid); | |
71 | }); | |
72 | } |