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src/servers/custom-errors.ts

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+import type { ContentfulStatusCode } from 'hono/utils/http-status';
+
+export class CustomError extends Error {
+  constructor(
+    public statusCode: ContentfulStatusCode,
+    message?: string,
+    public returnValue?: any,
+  ) {
+    super(message);
+  }
+}
+
+export function createError(statusCode: ContentfulStatusCode, message: string, returnValue?: any) {
+  return new CustomError(statusCode, message, returnValue);
+}
+
+export function BAD_REQUEST(message?: string) {
+  return new CustomError(400, message || 'Bad Request');
+}
+
+export function UNAUTHORIZED(message?: string) {
+  return new CustomError(401, message || 'Unauthorized');
+}
+
+export function BAD_CREDENTIALS(message?: string) {
+  return new CustomError(401, message || 'Bad Credentials');
+}
+
+export function FORBIDDEN(message?: string) {
+  return new CustomError(403, message || 'Forbidden');
+}
+
+export function NOT_FOUND(message?: string) {
+  return new CustomError(404, message || 'Not Found');
+}
+
+export function METHOD_NOT_ALLOWED(message?: string) {
+  return new CustomError(405, message || 'Method Not Allowed');
+}
+
+export function CONFLICT(message?: string) {
+  return new CustomError(409, message || 'Conflict');
+}
+
+export function GONE(message?: string) {
+  return new CustomError(410, message || 'Gone');
+}
+
+export function INTERNAL_SERVER_ERROR(message?: string, returnValue?: any) {
+  return new CustomError(500, message || 'Internal Server Error', returnValue);
+}
+
+export function USER_ALREADY_EXISTS(message?: string) {
+  return new CustomError(409, message || 'This email address already exists');
+}
+
+export function AUDIENCE_ERROR(message?: string) {
+  return new CustomError(400, message || 'Failed to create audience in Google Analytics');
+}
+
+export const NO_START_EXPERIMENTS = () =>
+  new CustomError(
+    405,
+    "Starting Experiments is temporarily paused. Sorry for the Inconvenience. We will send you an email as soon as it's up again",
+  );
+
+export function TOO_MANY_REQUESTS(message?: string, retryAfter?: number) {
+  return new CustomError(429, message || 'Too many requests', { retryAfter });
+}