handler.js

@@ -1,167 +1,25 @@
-// === Handler ===
+// Define the handler function
-export const handler = async (req, res) => {
+export const handler = async (event, res) => {
     try {
-        const modified = processPreRequest(req.body?.request);
+        // Prepare the response JSON
-        return res.status(200).json(modified);
+        const responseJson = {
-    } catch (err) {
+            message: "Hello World"
-        return handleError(err, res);
+        };
+
+        // Print the JSON response to stdout
+        console.log(JSON.stringify(responseJson));
+
+        // Set the response headers
+        res.setHeader('Content-Type', 'application/json');
+
+        // Send the response JSON
+        res.end(JSON.stringify(responseJson));
+    } catch (error) {
+        // Handle errors
+        console.error(error);
+        // Send an error response if needed
+        res.statusCode = 500;
+        res.setHeader('Content-Type', 'text/plain');
+        res.end('Internal Server Error');
     }
 };
-
-// === Core Processing ===
-function processPreRequest(request) {
-    if (!request || typeof request !== 'object') {
-        throw new InvalidJsonContentTypeError('Missing or invalid request body', 400);
-    }
-
-    const modified = preRequestHandlerWrapper(request);
-    return modified;
-}
-
-// === Unified Error Handler ===
-function handleError(err, res) {
-    const isJsonTypeError = err instanceof InvalidJsonContentTypeError ||
-        err?.message?.includes('Body content-type is not valid JSON');
-
-    const status = isJsonTypeError ? err.statusCode || 415 : 500;
-
-    return res.status(status).json({
-        error: err.name || 'InternalServerError',
-        message: err.message || 'Unexpected error occurred',
-        ...(err.details && { details: err.details }),
-    });
-}
-
-
-let currentContext = null;
-let currentRequest = null;
-
-function createContext() {
-    return {
-        addedQueryParams: {},
-        removedQueryParams: [],
-        addedHeaders: {},
-        removedHeaders: [],
-        method: null,
-        body: null
-    };
-}
-
-export function preRequestHandlerWrapper(request) {
-    currentContext = createContext();
-    currentRequest = request;
-    preRequestHandler();
-    const ctx = currentContext;
-    currentContext = null;
-    currentRequest = null;
-    return ctx;
-}
-
-export function preRequestHandler() {
-    const headerValue = getHeader('x-api-key');
-    setHeader('x-api-key-1', headerValue);
-    setQueryParam('accessKey', getQueryParam('queryParam2'));
-    removeQueryParam('queryParam2');
-
-    const body = getJsonBody();
-    if (body) {
-        body.modifiedAt = Date.now();
-        body.transformedText = "Pre Request Transformed Text";
-        setJsonBody(body);
-    }
-}
-
-// ========== Utility functions using currentRequest ==========
-
-export function setHeader(key, value) {
-    if (!currentRequest?.headers) currentRequest.headers = {};
-    currentRequest.headers[key.toLowerCase()] = value;
-    currentContext?.addedHeaders && (currentContext.addedHeaders[key.toLowerCase()] = value);
-}
-
-export function removeHeader(key) {
-    if (currentRequest?.headers?.[key.toLowerCase()] !== undefined) {
-        delete currentRequest.headers[key.toLowerCase()];
-        currentContext?.removedHeaders?.push(key.toLowerCase());
-    }
-}
-
-export function setQueryParam(key, value) {
-    const url = new URL(currentRequest.url);
-    url.searchParams.set(key, value);
-    currentRequest.url = url.toString();
-    currentContext?.addedQueryParams && (currentContext.addedQueryParams[key] = value);
-}
-
-export function removeQueryParam(key) {
-    const url = new URL(currentRequest.url);
-    url.searchParams.delete(key);
-    currentRequest.url = url.toString();
-    currentContext?.removedQueryParams?.push(key);
-}
-
-export function setMethod(method) {
-    if (typeof method === 'string') {
-        currentRequest.method = method.toUpperCase();
-        currentContext && (currentContext.method = currentRequest.method);
-    }
-}
-
-export function getJsonBody() {
-    if (!currentRequest?.body) return null;
-
-    const contentType = currentRequest.contentType || currentRequest.headers?.['content-type'] || '';
-
-    if (!contentType.includes('application/json')) {
-        throw new InvalidJsonContentTypeError();
-    }
-
-    try {
-        return typeof currentRequest.body === 'string'
-            ? JSON.parse(currentRequest.body)
-            : currentRequest.body;
-    } catch (err) {
-        throw new InvalidJsonContentTypeError('Failed to parse JSON body', 415, { originalError: err });
-    }
-}
-
-export function setJsonBody(json) {
-    const contentType = currentRequest.contentType || currentRequest.headers?.['content-type'] || '';
-
-    if (!contentType.includes('application/json')) {
-        throw new InvalidJsonContentTypeError();
-    }
-
-    try {
-        currentRequest.body = JSON.stringify(json);
-        currentContext && (currentContext.body = json);
-    } catch (err) {
-        throw new InvalidJsonContentTypeError('Failed to stringify JSON body', 415, { originalError: err });
-    }
-}
-
-export function getQueryParam(key) {
-    try {
-        const url = new URL(currentRequest.url);
-        return url.searchParams.get(key);
-    } catch {
-        return null;
-    }
-}
-
-export function getHeader(key) {
-    if (!currentRequest?.headers) return null;
-    return currentRequest.headers[key.toLowerCase()] || null;
-}
-
-// === Custom Exception Class ===
-class InvalidJsonContentTypeError extends Error {
-    constructor(message = 'Body content-type is not valid JSON', statusCode = 415, details = {}) {
-        super(message);
-        this.name = 'InvalidJsonContentTypeError';
-        this.statusCode = statusCode;
-        this.details = details;
-    }
-}
-
-