feat(api): implement /api/user/me endpoint

src/app/api/validation.ts

@@ -0,0 +1,87 @@
+import { registry } from '@/lib/swagger';
+import { extendZodWithOpenApi } from '@asteasolutions/zod-to-openapi';
+import zod from 'zod/v4';
+
+extendZodWithOpenApi(zod);
+
+export const ErrorResponseSchema = zod
+  .object({
+    success: zod.boolean(),
+    message: zod.string(),
+  })
+  .openapi('ErrorResponseSchema', {
+    description: 'Error response schema',
+    example: {
+      success: false,
+      message: 'An error occurred',
+    },
+  });
+
+export const ZodErrorResponseSchema = ErrorResponseSchema.extend({
+  errors: zod.array(
+    zod.object({
+      expected: zod.string().optional(),
+      code: zod.string(),
+      path: zod.array(
+        zod
+          .string()
+          .or(zod.number())
+          .or(
+            zod.symbol().openapi({
+              type: 'string',
+            }),
+          ),
+      ),
+      message: zod.string(),
+    }),
+  ),
+}).openapi('ZodErrorResponseSchema', {
+  description: 'Zod error response schema',
+  example: {
+    success: false,
+    message: 'Invalid request data',
+    errors: [
+      {
+        expected: 'string',
+        code: 'invalid_type',
+        path: ['first_name'],
+        message: 'Invalid input: expected string, received number',
+      },
+    ],
+  },
+});
+
+export const SuccessResponseSchema = zod
+  .object({
+    success: zod.boolean(),
+    message: zod.string().optional(),
+  })
+  .openapi('SuccessResponseSchema', {
+    description: 'Success response schema',
+    example: {
+      success: true,
+      message: 'Operation completed successfully',
+    },
+  });
+
+export const UserIdParamSchema = registry.registerParameter(
+  'UserIdOrNameParam',
+  zod.string().openapi({
+    param: {
+      name: 'user',
+      in: 'path',
+    },
+    example: '12345',
+  }),
+);
+
+export const EventIdParamSchema = registry.registerParameter(
+  'EventIdParam',
+  zod.string().openapi({
+    param: {
+      name: 'eventID',
+      in: 'path',
+    },
+    example: '67890',
+  }),
+);