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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 isNotEmptyIntArray (value: any) { | |
13 | return Array.isArray(value) && value.every(v => validator.isInt('' + v)) && value.length !== 0 | |
14 | } | |
15 | ||
16 | function isArrayOf (value: any, validator: (value: any) => boolean) { | |
17 | return isArray(value) && value.every(v => validator(v)) | |
18 | } | |
19 | ||
20 | function isDateValid (value: string) { | |
21 | return exists(value) && validator.isISO8601(value) | |
22 | } | |
23 | ||
24 | function isIdValid (value: string) { | |
25 | return exists(value) && validator.isInt('' + value) | |
26 | } | |
27 | ||
28 | function isUUIDValid (value: string) { | |
29 | return exists(value) && validator.isUUID('' + value, 4) | |
30 | } | |
31 | ||
32 | function isIdOrUUIDValid (value: string) { | |
33 | return isIdValid(value) || isUUIDValid(value) | |
34 | } | |
35 | ||
36 | function isBooleanValid (value: any) { | |
37 | return typeof value === 'boolean' || (typeof value === 'string' && validator.isBoolean(value)) | |
38 | } | |
39 | ||
40 | function toIntOrNull (value: string) { | |
41 | if (value === 'null') return null | |
42 | ||
43 | return validator.toInt(value) | |
44 | } | |
45 | ||
46 | function toValueOrNull (value: string) { | |
47 | if (value === 'null') return null | |
48 | ||
49 | return value | |
50 | } | |
51 | ||
52 | function toArray (value: any) { | |
53 | if (value && isArray(value) === false) return [ value ] | |
54 | ||
55 | return value | |
56 | } | |
57 | ||
58 | function toIntArray (value: any) { | |
59 | if (!value) return [] | |
60 | if (isArray(value) === false) return [ validator.toInt(value) ] | |
61 | ||
62 | return value.map(v => validator.toInt(v)) | |
63 | } | |
64 | ||
65 | function isFileValid ( | |
66 | files: { [ fieldname: string ]: Express.Multer.File[] } | Express.Multer.File[], | |
67 | mimeTypeRegex: string, | |
68 | field: string, | |
69 | maxSize: number | null, | |
70 | optional = false | |
71 | ) { | |
72 | // Should have files | |
73 | if (!files) return optional | |
74 | if (isArray(files)) return optional | |
75 | ||
76 | // Should have a file | |
77 | const fileArray = files[ field ] | |
78 | if (!fileArray || fileArray.length === 0) { | |
79 | return optional | |
80 | } | |
81 | ||
82 | // The file should exist | |
83 | const file = fileArray[ 0 ] | |
84 | if (!file || !file.originalname) return false | |
85 | ||
86 | // Check size | |
87 | if ((maxSize !== null) && file.size > maxSize) return false | |
88 | ||
89 | return new RegExp(`^${mimeTypeRegex}$`, 'i').test(file.mimetype) | |
90 | } | |
91 | ||
92 | // --------------------------------------------------------------------------- | |
93 | ||
94 | export { | |
95 | exists, | |
96 | isArrayOf, | |
97 | isNotEmptyIntArray, | |
98 | isArray, | |
99 | isIdValid, | |
100 | isUUIDValid, | |
101 | isIdOrUUIDValid, | |
102 | isDateValid, | |
103 | toValueOrNull, | |
104 | isBooleanValid, | |
105 | toIntOrNull, | |
106 | toArray, | |
107 | toIntArray, | |
108 | isFileValid | |
109 | } |