-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathTable.js
More file actions
57 lines (51 loc) · 1.35 KB
/
Table.js
File metadata and controls
57 lines (51 loc) · 1.35 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
const { v4: uuidV4 } = require("uuid")
const fs = require("fs")
const TableDoesNotExistError = require("./errors/TableDoesNotExistError")
const { reject } = require("rsvp")
module.exports = class Table {
constructor(tableName) {
this.tableName = tableName
}
get filePath() {
return `data/${this.tableName}.json`
}
overwriteTable(data) {
return new Promise((resolve, reject) => {
fs.writeFile(this.filePath, JSON.stringify(data), error => {
if (error) return reject(error)
resolve()
})
})
}
insertRecord(record) {
const recordWithId = { _id: uuidV4(), ...record }
return new Promise((resolve, reject) => {
this.readData()
.catch(e => {
if (e instanceof TableDoesNotExistError) {
return []
} else {
reject(e)
}
})
.then(data => {
fs.writeFile(
this.filePath,
JSON.stringify([...data, recordWithId]),
error => {
if (error) return reject(error)
resolve(recordWithId)
}
)
})
})
}
readData() {
return new Promise((resolve, reject) => {
fs.readFile(this.filePath, (error, data) => {
if (error) return reject(new TableDoesNotExistError(this.tableName))
resolve(JSON.parse(data))
})
})
}
}