From e8913d152d2f79b5282956e972bf85b5acd9bba1 Mon Sep 17 00:00:00 2001
From: Edosicca <47154408+sichej@users.noreply.github.com>
Date: Fri, 6 May 2022 14:52:18 +0200
Subject: [PATCH] Added new operation Inverting character case

---
 src/core/config/Categories.json               |  6 +-
 .../operations/InvertingCharactersCase.mjs    | 62 +++++++++++++++++++
 2 files changed, 66 insertions(+), 2 deletions(-)
 create mode 100644 src/core/operations/InvertingCharactersCase.mjs

diff --git a/src/core/config/Categories.json b/src/core/config/Categories.json
index 9540f8a3..b0bf802f 100644
--- a/src/core/config/Categories.json
+++ b/src/core/config/Categories.json
@@ -65,7 +65,8 @@
             "JSON to CSV",
             "Avro to JSON",
             "CBOR Encode",
-            "CBOR Decode"
+            "CBOR Decode",
+            "Inverting characters case"
         ]
     },
     {
@@ -220,7 +221,8 @@
             "Unicode Text Format",
             "Remove Diacritics",
             "Unescape Unicode Characters",
-            "Convert to NATO alphabet"
+            "Convert to NATO alphabet",
+            "Inverting characters case"
         ]
     },
     {
diff --git a/src/core/operations/InvertingCharactersCase.mjs b/src/core/operations/InvertingCharactersCase.mjs
new file mode 100644
index 00000000..baf293c9
--- /dev/null
+++ b/src/core/operations/InvertingCharactersCase.mjs
@@ -0,0 +1,62 @@
+/**
+ * @author Sichej [edoardo.sichelli@gmail.com]
+ * @copyright Crown Copyright 2022
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+import OperationError from "../errors/OperationError.mjs";
+
+/**
+ * Inverting characters case operation
+ */
+class InvertingCharactersCase extends Operation {
+
+    /**
+     * InvertingCharactersCase constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "Inverting characters case";
+        this.module = "Default";
+        this.description = "Inverting characters case <code>vgHPCYbcyxnLnJqGBwvHBNmGC29TzxrOAw5NlG==</code> becomes <code>VGhpcyBCYXNlNjQgbWVhbnMgc29tZXRoaW5nLg==</code>";
+        this.infoURL = "";
+        this.inputType = "string";
+        this.outputType = "string";
+        this.args = [];
+    }
+
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    run(input, args) {
+        var result = "";
+        for(var i = 0; i < input.length; i++){
+            result += this.checkAndChangeCase(input[i]);
+        }
+        return result;
+    }
+
+    /**
+     * Check if a character is Uppercase or Lowercase 
+     * and returns the opposite
+     */
+    checkAndChangeCase(character){
+        try {
+            if(character.charCodeAt(0) > 64 && character.charCodeAt(0) < 91)
+                return character.toLowerCase();
+            else if (character.charCodeAt(0) > 96 && character.charCodeAt(0) < 123)
+                return character.toUpperCase();
+            else
+                return character;
+        } catch (error) {
+            throw new OperationError("Error, something went wrong");
+        }
+    }
+
+}
+
+export default InvertingCharactersCase;