From fa7971bb2bb2a11727b161e1f57188d1e817a5d3 Mon Sep 17 00:00:00 2001
From: Pau <misscotters@gmail.com>
Date: Tue, 1 Apr 2025 20:36:00 +0200
Subject: [PATCH] added validators for data in route and authorization

---
 .../expressValidator/customValidators.js      | 11 ++++++++++
 .../payloadExpressValidator.js                | 21 +++++++++++++++++++
 src/validators/filters.js                     |  6 ++++++
 src/validators/jwtValidators.js               | 16 ++++++++++++++
 src/validators/result-validators.js           |  5 +++++
 5 files changed, 59 insertions(+)
 create mode 100644 src/validators/expressValidator/customValidators.js
 create mode 100644 src/validators/expressValidator/payloadExpressValidator.js
 create mode 100644 src/validators/filters.js
 create mode 100644 src/validators/jwtValidators.js
 create mode 100644 src/validators/result-validators.js

diff --git a/src/validators/expressValidator/customValidators.js b/src/validators/expressValidator/customValidators.js
new file mode 100644
index 0000000..abd0ef6
--- /dev/null
+++ b/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,
+}
diff --git a/src/validators/expressValidator/payloadExpressValidator.js b/src/validators/expressValidator/payloadExpressValidator.js
new file mode 100644
index 0000000..b771f37
--- /dev/null
+++ b/src/validators/expressValidator/payloadExpressValidator.js
@@ -0,0 +1,21 @@
+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 }
diff --git a/src/validators/filters.js b/src/validators/filters.js
new file mode 100644
index 0000000..8a63e61
--- /dev/null
+++ b/src/validators/filters.js
@@ -0,0 +1,6 @@
+const filterByStock = (arr, min = 0, max = Number.MAX_VALUE) => {
+    return arr
+            .filter((item) => item.stock >= min && item.stock <= max)
+}
+
+export {filterByStock}
\ No newline at end of file
diff --git a/src/validators/jwtValidators.js b/src/validators/jwtValidators.js
new file mode 100644
index 0000000..9fd40ae
--- /dev/null
+++ b/src/validators/jwtValidators.js
@@ -0,0 +1,16 @@
+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 }
diff --git a/src/validators/result-validators.js b/src/validators/result-validators.js
new file mode 100644
index 0000000..0fafff6
--- /dev/null
+++ b/src/validators/result-validators.js
@@ -0,0 +1,5 @@
+const noResults = (data) => {
+	return data && data.length < 1
+}
+
+export { noResults }