-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathstorage.js
More file actions
324 lines (303 loc) · 9.19 KB
/
storage.js
File metadata and controls
324 lines (303 loc) · 9.19 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
require('dotenv').config();
const {
MYSQL_HOSTNAME,
MYSQL_DATABASE,
MYSQL_USERNAME,
MYSQL_PASSWORD,
MYSQL_POOLSIZE,
} = process.env;
const mysql = require('mysql2');
const pool = mysql.createPool({
connectionLimit: MYSQL_POOLSIZE,
host: MYSQL_HOSTNAME,
user: MYSQL_USERNAME,
password: MYSQL_PASSWORD,
database: MYSQL_DATABASE,
});
const promisePool = pool.promise();
function createDBStorage() {
const storagePool = promisePool;
async function getQuestion(questionId) {
try {
const sql = 'SELECT * FROM `prefvotebot_questions` WHERE `Id` = ?';
const data = [questionId];
const [question] = await storagePool.execute(sql, data);
return {
header: question[0].Header,
text: question[0].Text,
};
} catch (e) {
return e;
}
}
async function getQuestionsCreatedByUser(userId) {
try {
const sql = `
SELECT Id, Header, Text, Voters
FROM prefvotebot_questions pq
INNER JOIN (
SELECT QuestionId, COUNT(DISTINCT User) AS Voters
FROM prefvotebot_statuses
WHERE Status = "ANSWERED"
GROUP BY QuestionId
) pv
ON (pq.Id = pv.QuestionId)
WHERE Owner = ?
ORDER BY CreatedDate DESC`;
const data = [userId];
const [questions] = await storagePool.execute(sql, data);
return questions.map(({
Id, Header, Text, Voters,
}) => ({
id: Id, header: Header, text: Text, voters: Voters,
}));
} catch (e) {
return e;
}
}
async function getQuestionsVotedByUser(userId) {
try {
const sql = `
SELECT pq.Id, Header, Text, Voters
FROM prefvotebot_questions pq
INNER JOIN prefvotebot_statuses ps
ON (pq.Id = ps.QuestionId)
INNER JOIN (
SELECT QuestionId, COUNT(DISTINCT User) AS Voters
FROM prefvotebot_statuses
WHERE Status = "ANSWERED"
GROUP BY QuestionId
) pv
ON (pq.Id = pv.QuestionId)
WHERE ps.User = ?
ORDER BY ps.StatusDate DESC`;
const data = [userId];
const [questions] = await storagePool.execute(sql, data);
return questions.map(({
Id, Header, Text, Voters,
}) => ({
id: Id, header: Header, text: Text, voters: Voters,
}));
} catch (e) {
return e;
}
}
async function getQuestionsWithText(textArray = []) {
try {
const headerWhere = textArray.map((item) => `HEADER LIKE '%${item}%'`);
const textWhere = textArray.map((item) => `TEXT LIKE '%${item}%'`);
const sql = `
SELECT pq.Id, Header, Text, Voters
FROM prefvotebot_questions pq
LEFT OUTER JOIN (
SELECT QuestionId, COUNT(DISTINCT User) AS Voters
FROM prefvotebot_statuses
WHERE Status = "ANSWERED"
GROUP BY QuestionId
) pv
ON (pq.Id = pv.QuestionId)
WHERE (${headerWhere.join(' AND ')}) OR (${textWhere.join(' AND ')})
ORDER BY CreatedDate DESC`;
const [questions] = await storagePool.execute(sql);
return questions.map(({
Id, Header, Text, Voters,
}) => ({
id: Id, header: Header, text: Text, voters: Voters,
}));
} catch (e) {
return e;
}
}
async function getQuestionStatus(questionId, userId) {
try {
const sql = 'SELECT * FROM `prefvotebot_statuses` WHERE `QuestionId` = ? AND `User` = ?';
const data = [questionId, userId];
const result = await storagePool.execute(sql, data);
const [rows] = result;
if (rows.length === 0) { return null; }
return rows[0].Status;
} catch (e) {
return e;
}
}
async function getQuestionsPopular() {
try {
const sql = `
SELECT pq.Id, Header, Text, Voters
FROM prefvotebot_questions pq
INNER JOIN (
SELECT QuestionId, COUNT(DISTINCT User) AS Voters
FROM prefvotebot_statuses
WHERE Status = "ANSWERED"
GROUP BY QuestionId
) pv
ON (pq.Id = pv.QuestionId)
ORDER BY
Voters DESC,
CreatedDate DESC
LIMIT 10`;
const [questions] = await storagePool.execute(sql);
return questions.map(({
Id, Header, Text, Voters,
}) => ({
id: Id, header: Header, text: Text, voters: Voters,
}));
} catch (e) {
return e;
}
}
async function getQuestionsRandom() {
try {
const sqlCount = `
SELECT COUNT(*) K
FROM prefvotebot_questions pq`;
const [resultCount] = await storagePool.execute(sqlCount);
const count = resultCount[0].K;
const randomId = Math.floor(count * Math.random());
const sql = `SELECT Id
FROM prefvotebot_questions pq
ORDER BY Id ASC
LIMIT ?, 1`;
const data = [randomId];
const [questions] = await storagePool.execute(sql, data);
const questionId = questions[0].Id;
return questionId;
} catch (e) {
return e;
}
}
async function getOptions(questionId) {
try {
const sql = 'SELECT * FROM `prefvotebot_options` WHERE `QuestionId` = ?';
const data = [questionId];
const [options] = await storagePool.execute(sql, data);
return options;
} catch (e) {
return e;
}
}
async function getQuestionWithOptions(questionId) {
try {
const questionSQL = 'SELECT * FROM `prefvotebot_questions` WHERE `Id` = ?';
const optioinsSQL = 'SELECT * FROM `prefvotebot_options` WHERE `QuestionId` = ?';
const data = [questionId];
const [questionRow] = await storagePool.execute(questionSQL, data);
const [optionsRows] = await storagePool.execute(optioinsSQL, data);
return {
header: questionRow[0].Header,
text: questionRow[0].Text,
options: optionsRows,
};
} catch (e) {
return e;
}
}
async function getVotersCount(questionId) {
try {
const sql = 'SELECT COUNT(DISTINCT User) AS VotersCount FROM `prefvotebot_ranks` WHERE `QuestionId` = ?';
const data = [questionId];
const [result] = await storagePool.execute(sql, data);
return { votersCount: result[0].VotersCount };
} catch (e) {
return e;
}
}
async function getRanks(questionId) {
try {
const sql = `SELECT
r1.OptionId Option1,
r2.OptionId Option2,
SUM(CASE WHEN r1.Rank < r2.Rank THEN 1 ELSE 0 END) K
FROM (
SELECT *
FROM prefvotebot_ranks
WHERE QuestionId = ?
) r1
INNER JOIN (
SELECT *
FROM prefvotebot_ranks
WHERE QuestionId = ?
) r2
ON r1.User = r2.User
GROUP BY
r1.OptionId,
r2.OptionId`;
const data = [questionId, questionId];
const [ranks] = await storagePool.query(sql, data);
return ranks;
} catch (e) {
return e;
}
}
async function saveRanks({
userId, optionsSelected, options, userFirstName, userLastName, userName,
}) {
try {
const sql = `INSERT INTO prefvotebot_ranks
(QuestionId, OptionId, Rank, User, UserFirstName, UserLastName, UserName)
VALUES ?`;
const unselectedIndex = optionsSelected.length + 1;
const data = [[
...optionsSelected.map((item, index) => [
item.QuestionId, item.Id, index + 1, userId, userFirstName, userLastName, userName,
]),
...options.map((item) => [
item.QuestionId, item.Id, unselectedIndex, userId, userFirstName, userLastName, userName,
]),
]];
const result = await storagePool.query(sql, data);
return result;
} catch (e) {
return e;
}
}
async function saveStatus({
userId, questionId, status, userFirstName, userLastName, userName,
}) {
try {
const sql = `INSERT INTO prefvotebot_statuses
(QuestionId, User, Status, UserFirstName, UserLastName, UserName)
VALUES (?, ?, ?, ?, ?, ?)`;
const data = [questionId, userId, status, userFirstName, userLastName, userName];
const result = await storagePool.query(sql, data);
return result;
} catch (e) {
return e;
}
}
async function saveQuestionWithOptions({
userId, header, text, options, userFirstName, userLastName, userName,
}) {
try {
const questionSQL = `INSERT INTO prefvotebot_questions
(Header, Text, Owner, UserFirstName, UserLastName, UserName)
VALUES (?, ?, ?, ?, ?, ?)`;
const questionData = [header, text, userId, userFirstName, userLastName, userName];
const questionResult = await storagePool.query(questionSQL, questionData);
const questionId = questionResult[0].insertId;
const optionsSQL = 'INSERT INTO prefvotebot_options (QuestionId, Name) VALUES ?';
const optionsData = [options.map((element) => [questionId, element])];
await storagePool.query(optionsSQL, optionsData);
return questionId;
} catch (e) {
return e;
}
}
return {
getQuestion,
getQuestionsCreatedByUser,
getQuestionsVotedByUser,
getQuestionsWithText,
getQuestionStatus,
getQuestionWithOptions,
getQuestionsPopular,
getQuestionsRandom,
getOptions,
getVotersCount,
getRanks,
saveQuestionWithOptions,
saveRanks,
saveStatus,
};
}
module.exports = createDBStorage;