- Removed test data from db files, cleaned structures, and fix other things

functions.js

@@ -0,0 +1,48 @@
+// Error handling
+const { HttpError } = require('./validations/Errors')
+
+const regexInt = RegExp(/^[1-9]\d*$/)
+const regexXSS = RegExp(/<[^>]*script/)
+
+// Check if int for param validation
+const paramIntCheck = (req, res, next, input) => {
+    try {
+        if (regexInt.test(input)) {
+            next()
+        } else {
+            throw new Error
+        }
+    } catch (err) {
+        err = new HttpError(403, 'Provided ID must be an integer and not zero')
+        res.status(err.code).send(JSON.stringify(
+            {
+                "error": err.message,
+                "code": err.code
+            })
+        )
+    }
+}
+
+// Check if script injection attempt
+const isXSSAttempt = (string) => {
+    if (regexXSS.test(string)) {
+        return true
+    } else {
+        return false
+    }
+}
+
+// Check if object is null
+const isEmptyObject = (obj) => {
+    if (Object.keys(obj).length === 0 && obj.constructor === Object) {
+        return true
+    } else {
+        return false
+    }
+}
+
+module.exports = {
+    paramIntCheck,
+    isXSSAttempt,
+    isEmptyObject
+}