feat(protocols): refactor protocol utilities into centralized protocols module

ts/proxies/http-proxy/models/http-types.ts

@@ -1,4 +1,6 @@
 import * as plugins from '../../../plugins.js';
+// Import from protocols for consistent status codes
+import { HttpStatus as ProtocolHttpStatus, getStatusText as getProtocolStatusText } from '../../../protocols/http/index.js';
 
 /**
  * HTTP-specific event types
@@ -10,34 +12,33 @@ export enum HttpEvents {
   REQUEST_ERROR = 'request-error',
 }
 
-/**
- * HTTP status codes as an enum for better type safety
- */
-export enum HttpStatus {
-  OK = 200,
-  MOVED_PERMANENTLY = 301,
-  FOUND = 302,
-  TEMPORARY_REDIRECT = 307,
-  PERMANENT_REDIRECT = 308,
-  BAD_REQUEST = 400,
-  UNAUTHORIZED = 401,
-  FORBIDDEN = 403,
-  NOT_FOUND = 404,
-  METHOD_NOT_ALLOWED = 405,
-  REQUEST_TIMEOUT = 408,
-  TOO_MANY_REQUESTS = 429,
-  INTERNAL_SERVER_ERROR = 500,
-  NOT_IMPLEMENTED = 501,
-  BAD_GATEWAY = 502,
-  SERVICE_UNAVAILABLE = 503,
-  GATEWAY_TIMEOUT = 504,
-}
+
+// Re-export for backward compatibility with subset of commonly used codes
+export const HttpStatus = {
+  OK: ProtocolHttpStatus.OK,
+  MOVED_PERMANENTLY: ProtocolHttpStatus.MOVED_PERMANENTLY,
+  FOUND: ProtocolHttpStatus.FOUND,
+  TEMPORARY_REDIRECT: ProtocolHttpStatus.TEMPORARY_REDIRECT,
+  PERMANENT_REDIRECT: ProtocolHttpStatus.PERMANENT_REDIRECT,
+  BAD_REQUEST: ProtocolHttpStatus.BAD_REQUEST,
+  UNAUTHORIZED: ProtocolHttpStatus.UNAUTHORIZED,
+  FORBIDDEN: ProtocolHttpStatus.FORBIDDEN,
+  NOT_FOUND: ProtocolHttpStatus.NOT_FOUND,
+  METHOD_NOT_ALLOWED: ProtocolHttpStatus.METHOD_NOT_ALLOWED,
+  REQUEST_TIMEOUT: ProtocolHttpStatus.REQUEST_TIMEOUT,
+  TOO_MANY_REQUESTS: ProtocolHttpStatus.TOO_MANY_REQUESTS,
+  INTERNAL_SERVER_ERROR: ProtocolHttpStatus.INTERNAL_SERVER_ERROR,
+  NOT_IMPLEMENTED: ProtocolHttpStatus.NOT_IMPLEMENTED,
+  BAD_GATEWAY: ProtocolHttpStatus.BAD_GATEWAY,
+  SERVICE_UNAVAILABLE: ProtocolHttpStatus.SERVICE_UNAVAILABLE,
+  GATEWAY_TIMEOUT: ProtocolHttpStatus.GATEWAY_TIMEOUT,
+} as const;
 
 /**
  * Base error class for HTTP-related errors
  */
 export class HttpError extends Error {
-  constructor(message: string, public readonly statusCode: HttpStatus = HttpStatus.INTERNAL_SERVER_ERROR) {
+  constructor(message: string, public readonly statusCode: number = HttpStatus.INTERNAL_SERVER_ERROR) {
     super(message);
     this.name = 'HttpError';
   }
@@ -61,7 +62,7 @@ export class CertificateError extends HttpError {
  * Error related to server operations
  */
 export class ServerError extends HttpError {
-  constructor(message: string, public readonly code?: string, statusCode: HttpStatus = HttpStatus.INTERNAL_SERVER_ERROR) {
+  constructor(message: string, public readonly code?: string, statusCode: number = HttpStatus.INTERNAL_SERVER_ERROR) {
     super(message, statusCode);
     this.name = 'ServerError';
   }
@@ -93,7 +94,7 @@ export class NotFoundError extends HttpError {
 export interface IRedirectConfig {
   source: string;           // Source path or pattern
   destination: string;      // Destination URL  
-  type: HttpStatus;         // Redirect status code
+  type: number;             // Redirect status code
   preserveQuery?: boolean;  // Whether to preserve query parameters
 }
 
@@ -115,30 +116,12 @@ export interface IRouterConfig {
  */
 export type HttpMethod = 'GET' | 'POST' | 'PUT' | 'DELETE' | 'PATCH' | 'HEAD' | 'OPTIONS' | 'CONNECT' | 'TRACE';
 
+
 /**
  * Helper function to get HTTP status text
  */
-export function getStatusText(status: HttpStatus): string {
-  const statusTexts: Record<HttpStatus, string> = {
-    [HttpStatus.OK]: 'OK',
-    [HttpStatus.MOVED_PERMANENTLY]: 'Moved Permanently',
-    [HttpStatus.FOUND]: 'Found',
-    [HttpStatus.TEMPORARY_REDIRECT]: 'Temporary Redirect',
-    [HttpStatus.PERMANENT_REDIRECT]: 'Permanent Redirect',
-    [HttpStatus.BAD_REQUEST]: 'Bad Request',
-    [HttpStatus.UNAUTHORIZED]: 'Unauthorized',
-    [HttpStatus.FORBIDDEN]: 'Forbidden',
-    [HttpStatus.NOT_FOUND]: 'Not Found',
-    [HttpStatus.METHOD_NOT_ALLOWED]: 'Method Not Allowed',
-    [HttpStatus.REQUEST_TIMEOUT]: 'Request Timeout',
-    [HttpStatus.TOO_MANY_REQUESTS]: 'Too Many Requests',
-    [HttpStatus.INTERNAL_SERVER_ERROR]: 'Internal Server Error',
-    [HttpStatus.NOT_IMPLEMENTED]: 'Not Implemented',
-    [HttpStatus.BAD_GATEWAY]: 'Bad Gateway',
-    [HttpStatus.SERVICE_UNAVAILABLE]: 'Service Unavailable',
-    [HttpStatus.GATEWAY_TIMEOUT]: 'Gateway Timeout',
-  };
-  return statusTexts[status] || 'Unknown';
+export function getStatusText(status: number): string {
+  return getProtocolStatusText(status as ProtocolHttpStatus);
 }
 
 // Legacy interfaces for backward compatibility