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Commit | Line | Data |
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1 | import 'multer' | |
2 | import * as validator from 'validator' | |
3 | ||
4 | function exists (value: any) { | |
5 | return value !== undefined && value !== null | |
6 | } | |
7 | ||
8 | function isArray (value: any) { | |
9 | return Array.isArray(value) | |
10 | } | |
11 | ||
12 | function isDateValid (value: string) { | |
13 | return exists(value) && validator.isISO8601(value) | |
14 | } | |
15 | ||
16 | function isIdValid (value: string) { | |
17 | return exists(value) && validator.isInt('' + value) | |
18 | } | |
19 | ||
20 | function isUUIDValid (value: string) { | |
21 | return exists(value) && validator.isUUID('' + value, 4) | |
22 | } | |
23 | ||
24 | function isIdOrUUIDValid (value: string) { | |
25 | return isIdValid(value) || isUUIDValid(value) | |
26 | } | |
27 | ||
28 | function isBooleanValid (value: any) { | |
29 | return typeof value === 'boolean' || (typeof value === 'string' && validator.isBoolean(value)) | |
30 | } | |
31 | ||
32 | function toIntOrNull (value: string) { | |
33 | if (value === 'null') return null | |
34 | ||
35 | return validator.toInt(value) | |
36 | } | |
37 | ||
38 | function toValueOrNull (value: string) { | |
39 | if (value === 'null') return null | |
40 | ||
41 | return value | |
42 | } | |
43 | ||
44 | function isFileValid ( | |
45 | files: { [ fieldname: string ]: Express.Multer.File[] } | Express.Multer.File[], | |
46 | mimeTypeRegex: string, | |
47 | field: string, | |
48 | maxSize: number, | |
49 | optional = false | |
50 | ) { | |
51 | // Should have files | |
52 | if (!files) return optional | |
53 | if (isArray(files)) return optional | |
54 | ||
55 | // Should have a file | |
56 | const fileArray = files[ field ] | |
57 | if (!fileArray || fileArray.length === 0) { | |
58 | return optional | |
59 | } | |
60 | ||
61 | // The file should exist | |
62 | const file = fileArray[ 0 ] | |
63 | if (!file || !file.originalname) return false | |
64 | ||
65 | // Check size | |
66 | if (maxSize && file.size > maxSize) return false | |
67 | ||
68 | return new RegExp(`^${mimeTypeRegex}$`, 'i').test(file.mimetype) | |
69 | } | |
70 | ||
71 | // --------------------------------------------------------------------------- | |
72 | ||
73 | export { | |
74 | exists, | |
75 | isArray, | |
76 | isIdValid, | |
77 | isUUIDValid, | |
78 | isIdOrUUIDValid, | |
79 | isDateValid, | |
80 | toValueOrNull, | |
81 | isBooleanValid, | |
82 | toIntOrNull, | |
83 | isFileValid | |
84 | } |