add auth and user handling

src/errors/httpErrors.ts

@@ -0,0 +1,39 @@
+export class ValidationError extends Error {
+  statusCode = 400;
+  constructor(message: string) {
+    super(message);
+    this.name = "ValidationError";
+  }
+}
+
+export class NotFoundError extends Error {
+  statusCode = 404;
+  constructor(message: string) {
+    super(message);
+    this.name = "NotFoundError";
+  }
+}
+
+export class ConflictError extends Error {
+  statusCode = 409;
+  constructor(message: string) {
+    super(message);
+    this.name = "ConflictError";
+  }
+}
+
+export class InternalServerError extends Error {
+  statusCode = 500;
+  constructor(message: string) {
+    super(message);
+    this.name = "InternalServerError";
+  }
+}
+
+export class UnauthorizedError extends Error {
+  statusCode = 409;
+  constructor(message: string) {
+    super(message);
+    this.name = "UnauthorizedError";
+  }
+}