From e3b75ce0f1615d1e047655868e2cdea62b9120b5 Mon Sep 17 00:00:00 2001
From: Kajal  Thakur <kajalthakur@gofynd.com>
Date: Thu, 27 Mar 2025 06:57:01 +0000
Subject: [PATCH] code update recorded at: 27/03/25 06:57:01

---
 handler.js | 99 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 handler.js

diff --git a/handler.js b/handler.js
new file mode 100644
index 0000000..b2c5506
--- /dev/null
+++ b/handler.js
@@ -0,0 +1,99 @@
+// BOILER_CODE_START
+
+import crypto from 'crypto'
+
+class EventNotSupportedException extends Error {
+    constructor(message) {
+        super(message);
+        this.name = 'EventNotSupportedException';
+        this.statusCode = 451;
+        this.message = message;
+    }
+}
+
+class InvalidEventPayloadException extends Error {
+    constructor(message) {
+        super(message);
+        this.statusCode = 452;
+        this.name = 'InvalidEventPayloadException';
+        this.message = message;
+    }
+}
+
+class RetryErrorException extends Error {
+    constructor(message) {
+        super(message);
+        this.statusCode = 453;
+        this.name = 'RetryErrorException';
+        this.message = message;
+    }
+}
+
+function generateSha256Hash(input) {
+    return crypto.createHash('sha256').update(input).digest('hex');
+}
+
+export const handler = async (req, res) => {
+    try {
+        const obj = req.body;
+        modifyObj(obj);
+        res.setHeader('Content-Type', 'application/json');
+        res.send(JSON.stringify(obj));
+    } catch (error) {
+        console.error(error);
+        const statusCode = error.statusCode || 500;
+        res.statusCode = statusCode;
+        res.setHeader('Content-Type', 'application/json');
+        res.send(JSON.stringify(statusCode === 500
+            ? { message: error.message }
+            : { name: error.name, message: error.message, statusCode }));
+    }
+};
+
+// BOILER_CODE_END
+
+function modifyObj(obj) {
+    // Check if 'properties.index' exists
+    if (obj.properties?.index) {
+        // Add transformation status
+        obj.properties.transformationStatus = "success";
+
+        // Generate SHA-256 hash of 'properties.index'
+        obj.properties.hashValue = generateSha256Hash(obj.properties.index);
+
+        // Remove the 'properties.index' key
+        delete obj.properties.index;
+
+        // Indicate deletion status
+        obj.properties.deleteStatus = "success";
+    } else {
+        // Throw an exception if 'properties.index' is missing
+        throw new InvalidEventPayloadException("'properties.index' is required but missing...");
+    }
+
+    return obj;
+}
+
+/* 
+Exceptions available:
+   throw new EventNotSupportedException('your message here');
+   throw new InvalidEventPayloadException('your message here');
+   throw new RetryErrorException('your message here');
+
+Method for generating 256 hash code for a String: 
+    let hashOfAString = generateSha256Hash(input);
+    
+*/
+
+
+/* 
+Exceptions available:
+   throw new EventNotSupportedException('your message here');
+   throw new InvalidEventPayloadException('your message here');
+   throw new RetryErrorException('your message here');
+
+Method for generating 256 hash code for a String: 
+    let hashOfAString = generateSha256Hash(input);
+    
+*/
+