added validators for data in route and authorization

src/validators/expressValidator/customValidators.js

@@ -0,0 +1,11 @@
+import { check } from 'express-validator'
+
+const varChar = (field, { max = 255 } = {}) => check(field).isString().trim().isLength({ min: 1, max }).withMessage(`|${field}| must be a string with a length between 1 and ${max}`)
+const integer = field => check(field).isInt({min: Number.MIN_SAFE_INTEGER, max: Number.MAX_SAFE_INTEGER}).withMessage(`|${field}| must be an integer`)
+const uuid = field => check(field).isUUID('all').withMessage(`|${field}| must be a valid UUID`)
+
+export {
+	integer,
+	uuid,
+	varChar,
+}

src/validators/expressValidator/payloadExpressValidator.js

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+import { validationResult } from 'express-validator'
+import { errorHandler } from '../../utils/errors.js'
+
+const payloadExpressValidator = (req, res, next, config) => {
+	const errors = validationResult(req)
+	if (!errors.isEmpty()) {
+		const badRequest = errors.array().find(val => undefined === val.value)
+
+		if (badRequest) {
+			const errorMessage = errorHandler({ errors: errors.array(), code: 'BAD_REQUEST' }, config.environment)
+			return res.status(errorMessage.code).json(errorMessage)
+		}
+
+		const error = errorHandler({ errors: errors.array(), code: 'UNPROCESSABLE_ENTITY' }, config.environment)
+		return res.status(error.code).json(error)
+	}
+
+	next()
+}
+
+export { payloadExpressValidator }

src/validators/filters.js

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+const filterByStock = (arr, min = 0, max = Number.MAX_VALUE) => {
+    return arr
+            .filter((item) => item.stock >= min && item.stock <= max)
+}
+
+export {filterByStock}

src/validators/jwtValidators.js

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+import { sendResponseAccessDenied } from "../utils/responses"
+
+const validateKeyValuePairFromToken = ({ key, values, singleValidation }) => (req, res, next, config) => {
+	const fieldValue = ((req.auth || {}).user || {})[key]
+	if (fieldValue && values.includes(fieldValue)) {
+		return singleValidation
+			? next({ error: false })
+			: true
+	}
+
+	return singleValidation
+		? sendResponseAccessDenied({ res, config })
+		: (req, res, env, next) => next({ error: true })
+}
+
+export { validateKeyValuePairFromToken }

src/validators/result-validators.js

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+const noResults = (data) => {
+	return data && data.length < 1
+}
+
+export { noResults }