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1 | import 'multer' | |
2 | import { UploadFilesForCheck } from 'express' | |
3 | import { sep } from 'path' | |
4 | import validator from 'validator' | |
5 | import { isShortUUID, shortToUUID } from '../uuid' | |
6 | ||
7 | function exists (value: any) { | |
8 | return value !== undefined && value !== null | |
9 | } | |
10 | ||
11 | function isSafePath (p: string) { | |
12 | return exists(p) && | |
13 | (p + '').split(sep).every(part => { | |
14 | return [ '..' ].includes(part) === false | |
15 | }) | |
16 | } | |
17 | ||
18 | function isArray (value: any): value is any[] { | |
19 | return Array.isArray(value) | |
20 | } | |
21 | ||
22 | function isNotEmptyIntArray (value: any) { | |
23 | return Array.isArray(value) && value.every(v => validator.isInt('' + v)) && value.length !== 0 | |
24 | } | |
25 | ||
26 | function isArrayOf (value: any, validator: (value: any) => boolean) { | |
27 | return isArray(value) && value.every(v => validator(v)) | |
28 | } | |
29 | ||
30 | function isDateValid (value: string) { | |
31 | return exists(value) && validator.isISO8601(value) | |
32 | } | |
33 | ||
34 | function isIdValid (value: string) { | |
35 | return exists(value) && validator.isInt('' + value) | |
36 | } | |
37 | ||
38 | function isUUIDValid (value: string) { | |
39 | return exists(value) && validator.isUUID('' + value, 4) | |
40 | } | |
41 | ||
42 | function areUUIDsValid (values: string[]) { | |
43 | return isArray(values) && values.every(v => isUUIDValid(v)) | |
44 | } | |
45 | ||
46 | function isIdOrUUIDValid (value: string) { | |
47 | return isIdValid(value) || isUUIDValid(value) | |
48 | } | |
49 | ||
50 | function isBooleanValid (value: any) { | |
51 | return typeof value === 'boolean' || (typeof value === 'string' && validator.isBoolean(value)) | |
52 | } | |
53 | ||
54 | function isIntOrNull (value: any) { | |
55 | return value === null || validator.isInt('' + value) | |
56 | } | |
57 | ||
58 | // --------------------------------------------------------------------------- | |
59 | ||
60 | function isFileFieldValid ( | |
61 | files: { [ fieldname: string ]: Express.Multer.File[] } | Express.Multer.File[], | |
62 | field: string, | |
63 | optional = false | |
64 | ) { | |
65 | // Should have files | |
66 | if (!files) return optional | |
67 | if (isArray(files)) return optional | |
68 | ||
69 | // Should have a file | |
70 | const fileArray = files[field] | |
71 | if (!fileArray || fileArray.length === 0) { | |
72 | return optional | |
73 | } | |
74 | ||
75 | // The file should exist | |
76 | const file = fileArray[0] | |
77 | if (!file || !file.originalname) return false | |
78 | return file | |
79 | } | |
80 | ||
81 | function isFileMimeTypeValid ( | |
82 | files: UploadFilesForCheck, | |
83 | mimeTypeRegex: string, | |
84 | field: string, | |
85 | optional = false | |
86 | ) { | |
87 | // Should have files | |
88 | if (!files) return optional | |
89 | if (isArray(files)) return optional | |
90 | ||
91 | // Should have a file | |
92 | const fileArray = files[field] | |
93 | if (!fileArray || fileArray.length === 0) { | |
94 | return optional | |
95 | } | |
96 | ||
97 | // The file should exist | |
98 | const file = fileArray[0] | |
99 | if (!file || !file.originalname) return false | |
100 | ||
101 | return new RegExp(`^${mimeTypeRegex}$`, 'i').test(file.mimetype) | |
102 | } | |
103 | ||
104 | function isFileValid ( | |
105 | files: { [ fieldname: string ]: Express.Multer.File[] } | Express.Multer.File[], | |
106 | mimeTypeRegex: string, | |
107 | field: string, | |
108 | maxSize: number | null, | |
109 | optional = false | |
110 | ) { | |
111 | // Should have files | |
112 | if (!files) return optional | |
113 | if (isArray(files)) return optional | |
114 | ||
115 | // Should have a file | |
116 | const fileArray = files[field] | |
117 | if (!fileArray || fileArray.length === 0) { | |
118 | return optional | |
119 | } | |
120 | ||
121 | // The file should exist | |
122 | const file = fileArray[0] | |
123 | if (!file || !file.originalname) return false | |
124 | ||
125 | // Check size | |
126 | if ((maxSize !== null) && file.size > maxSize) return false | |
127 | ||
128 | return new RegExp(`^${mimeTypeRegex}$`, 'i').test(file.mimetype) | |
129 | } | |
130 | ||
131 | // --------------------------------------------------------------------------- | |
132 | ||
133 | function toCompleteUUID (value: string) { | |
134 | if (isShortUUID(value)) return shortToUUID(value) | |
135 | ||
136 | return value | |
137 | } | |
138 | ||
139 | function toCompleteUUIDs (values: string[]) { | |
140 | return values.map(v => toCompleteUUID(v)) | |
141 | } | |
142 | ||
143 | function toIntOrNull (value: string) { | |
144 | const v = toValueOrNull(value) | |
145 | ||
146 | if (v === null || v === undefined) return v | |
147 | if (typeof v === 'number') return v | |
148 | ||
149 | return validator.toInt('' + v) | |
150 | } | |
151 | ||
152 | function toBooleanOrNull (value: any) { | |
153 | const v = toValueOrNull(value) | |
154 | ||
155 | if (v === null || v === undefined) return v | |
156 | if (typeof v === 'boolean') return v | |
157 | ||
158 | return validator.toBoolean('' + v) | |
159 | } | |
160 | ||
161 | function toValueOrNull (value: string) { | |
162 | if (value === 'null') return null | |
163 | ||
164 | return value | |
165 | } | |
166 | ||
167 | function toArray (value: any) { | |
168 | if (value && isArray(value) === false) return [ value ] | |
169 | ||
170 | return value | |
171 | } | |
172 | ||
173 | function toIntArray (value: any) { | |
174 | if (!value) return [] | |
175 | if (isArray(value) === false) return [ validator.toInt(value) ] | |
176 | ||
177 | return value.map(v => validator.toInt(v)) | |
178 | } | |
179 | ||
180 | // --------------------------------------------------------------------------- | |
181 | ||
182 | export { | |
183 | exists, | |
184 | isArrayOf, | |
185 | isNotEmptyIntArray, | |
186 | isArray, | |
187 | isIntOrNull, | |
188 | isIdValid, | |
189 | isSafePath, | |
190 | isUUIDValid, | |
191 | toCompleteUUIDs, | |
192 | toCompleteUUID, | |
193 | isIdOrUUIDValid, | |
194 | isDateValid, | |
195 | toValueOrNull, | |
196 | toBooleanOrNull, | |
197 | isBooleanValid, | |
198 | toIntOrNull, | |
199 | areUUIDsValid, | |
200 | toArray, | |
201 | toIntArray, | |
202 | isFileFieldValid, | |
203 | isFileMimeTypeValid, | |
204 | isFileValid | |
205 | } |