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e99c53fb BA |
1 | const db = require("../utils/database"); |
2 | ||
3 | const AssessmentEntity = | |
4 | { | |
5 | /* | |
6 | * Structure: | |
7 | * _id: BSON id | |
8 | * cid: course ID | |
9 | * name: varchar | |
10 | * active: boolean true/false | |
11 | * mode: secure | exam | open (decreasing security) | |
12 | * fixed: bool (questions in fixed order; default: false) | |
13 | * display: "one" or "all" (generally "all" for open questions, but...) | |
14 | * time: 0, //<=0 means "untimed"; otherwise, time in seconds | |
15 | * introduction: "", | |
e99c53fb BA |
16 | * coefficient: number, default 1 |
17 | * questions: array of | |
18 | * index: for paper test, like 2.1.a (?!); and quiz: 0, 1, 2, 3... | |
19 | * wording: varchar (HTML) | |
20 | * options: array of varchar --> if present, question type == quiz! | |
21 | * fixed: bool, options in fixed order (default: false) | |
22 | * answer: array of integers (for quiz) or html text (for paper); striped in exam mode | |
db5571d6 | 23 | * active: boolean, is question in current assessment? |
e99c53fb BA |
24 | * points: points for this question (default 1) |
25 | * papers : array of | |
26 | * number: student number | |
27 | * inputs: array of indexed arrays of integers (or html text if not quiz) | |
28 | * startTime, endTime | |
29c8b391 BA |
29 | * discoTime, totalDisco: last disconnect timestamp (if relevant) + total |
30 | * discoCount: total disconnections | |
e99c53fb BA |
31 | * password: random string identifying student for exam session TEMPORARY |
32 | */ | |
33 | ||
34 | getById: function(aid, callback) | |
35 | { | |
36 | db.assessments.findOne( | |
37 | { _id: aid }, | |
38 | callback | |
39 | ); | |
40 | }, | |
41 | ||
42 | getByPath: function(cid, name, callback) | |
43 | { | |
44 | db.assessments.findOne( | |
45 | { | |
46 | cid: cid, | |
47 | name: name, | |
48 | }, | |
49 | callback | |
50 | ); | |
51 | }, | |
52 | ||
53 | insert: function(cid, name, callback) | |
54 | { | |
55 | db.assessments.insert( | |
56 | { | |
57 | name: name, | |
58 | cid: cid, | |
59 | active: false, | |
60 | mode: "exam", | |
61 | fixed: false, | |
62 | display: "one", | |
63 | time: 0, | |
64 | introduction: "", | |
e99c53fb BA |
65 | coefficient: 1, |
66 | questions: [ ], | |
67 | papers: [ ], | |
68 | }, | |
69 | callback | |
70 | ); | |
71 | }, | |
72 | ||
73 | getByCourse: function(cid, callback) | |
74 | { | |
75 | db.assessments.find( | |
76 | { cid: cid }, | |
77 | callback | |
78 | ); | |
79 | }, | |
80 | ||
81 | // arg: full assessment without _id field | |
82 | replace: function(aid, assessment, cb) | |
83 | { | |
84 | // Should be: (but unsupported by mongojs) | |
85 | // db.assessments.replaceOne( | |
86 | // { _id: aid }, | |
87 | // assessment, | |
88 | // cb | |
89 | // ); | |
90 | // Temporary workaround: | |
91 | db.assessments.update( | |
92 | { _id: aid }, | |
93 | { $set: assessment }, | |
94 | cb | |
95 | ); | |
96 | }, | |
97 | ||
98 | getQuestions: function(aid, callback) | |
99 | { | |
100 | db.assessments.findOne( | |
101 | { _id: aid }, | |
102 | { questions: 1}, | |
103 | (err,res) => { | |
104 | callback(err, !!res ? res.questions : null); | |
105 | } | |
106 | ); | |
107 | }, | |
108 | ||
f03a2ad9 BA |
109 | getPaperByNumber: function(aid, number, callback) |
110 | { | |
111 | db.assessments.findOne( | |
112 | { | |
113 | _id: aid, | |
114 | "papers.number": number, | |
115 | }, | |
116 | (err,a) => { | |
117 | if (!!err || !a) | |
118 | return callback(err,a); | |
119 | for (let p of a.papers) | |
120 | { | |
121 | if (p.number == number) | |
122 | return callback(null,p); //reached for sure | |
123 | } | |
124 | } | |
125 | ); | |
126 | }, | |
127 | ||
e99c53fb BA |
128 | startSession: function(aid, number, password, callback) |
129 | { | |
e99c53fb BA |
130 | db.assessments.update( |
131 | { _id: aid }, | |
132 | { $push: { papers: { | |
133 | number: number, | |
134 | startTime: Date.now(), | |
135 | endTime: undefined, | |
136 | password: password, | |
29c8b391 BA |
137 | totalDisco: 0, |
138 | discoCount: 0, | |
e99c53fb BA |
139 | inputs: [ ], //TODO: this is stage 1, stack indexed answers. |
140 | // then build JSON tree for easier access / correct | |
141 | }}}, | |
142 | callback | |
143 | ); | |
144 | }, | |
145 | ||
29c8b391 BA |
146 | // NOTE: no callbacks for 2 next functions, failures are not so important |
147 | // (because monitored: teachers can see what's going on) | |
148 | ||
149 | addDisco: function(aid, number, deltaTime) | |
150 | { | |
151 | db.assessments.update( | |
152 | { | |
153 | _id: aid, | |
154 | "papers.number": number, | |
155 | }, | |
156 | { $inc: { | |
157 | "papers.$.discoCount": 1, | |
158 | "papers.$.totalDisco": deltaTime, | |
159 | } }, | |
160 | { $set: { "papers.$.discoTime": null } } | |
161 | ); | |
162 | }, | |
163 | ||
164 | setDiscoTime: function(aid, number) | |
165 | { | |
166 | db.assessments.update( | |
167 | { | |
168 | _id: aid, | |
169 | "papers.number": number, | |
170 | }, | |
171 | { $set: { "papers.$.discoTime": Date.now() } } | |
172 | ); | |
173 | }, | |
174 | ||
175 | getDiscoTime: function(aid, number, cb) | |
176 | { | |
177 | db.assessments.findOne( | |
178 | { _id: aid }, | |
179 | (err,a) => { | |
180 | if (!!err) | |
181 | return cb(err, null); | |
182 | const idx = a.papers.findIndex( item => { return item.number == number; }); | |
183 | cb(null, a.papers[idx].discoTime); | |
184 | } | |
185 | ); | |
186 | }, | |
f03a2ad9 BA |
187 | |
188 | hasInput: function(aid, number, password, idx, cb) | |
189 | { | |
190 | db.assessments.findOne( | |
191 | { | |
192 | _id: aid, | |
193 | "papers.number": number, | |
194 | "papers.password": password, | |
195 | }, | |
196 | (err,a) => { | |
197 | if (!!err || !a) | |
198 | return cb(err,a); | |
2c545c26 BA |
199 | let papIdx = a.papers.findIndex( item => { return item.number == number; }); |
200 | for (let i of a.papers[papIdx].inputs) | |
f03a2ad9 | 201 | { |
2c545c26 BA |
202 | if (i.index == idx) |
203 | return cb(null,true); | |
f03a2ad9 BA |
204 | } |
205 | cb(null,false); | |
206 | } | |
207 | ); | |
208 | }, | |
209 | ||
e99c53fb BA |
210 | // https://stackoverflow.com/questions/27874469/mongodb-push-in-nested-array |
211 | setInput: function(aid, number, password, input, callback) //input: index + arrayOfInt (or txt) | |
212 | { | |
213 | db.assessments.update( | |
214 | { | |
215 | _id: aid, | |
216 | "papers.number": number, | |
217 | "papers.password": password, | |
218 | }, | |
219 | { $push: { "papers.$.inputs": input } }, | |
220 | callback | |
221 | ); | |
222 | }, | |
223 | ||
224 | endAssessment: function(aid, number, password, callback) | |
225 | { | |
226 | db.assessments.update( | |
227 | { | |
228 | _id: aid, | |
229 | "papers.number": number, | |
230 | "papers.password": password, | |
231 | }, | |
232 | { $set: { | |
233 | "papers.$.endTime": Date.now(), | |
234 | "papers.$.password": "", | |
235 | } }, | |
236 | callback | |
237 | ); | |
238 | }, | |
239 | ||
e99c53fb BA |
240 | remove: function(aid, cb) |
241 | { | |
242 | db.assessments.remove( | |
243 | { _id: aid }, | |
244 | cb | |
245 | ); | |
246 | }, | |
247 | ||
248 | removeGroup: function(cid, cb) | |
249 | { | |
250 | db.assessments.remove( | |
251 | { cid: cid }, | |
252 | cb | |
253 | ); | |
254 | }, | |
255 | } | |
256 | ||
257 | module.exports = AssessmentEntity; |